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| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Chapter 1. Status</title><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /><meta name="keywords" content="ISO C++, library" /><meta name="keywords" content="ISO C++, runtime, library" /><link rel="home" href="../index.html" title="The GNU C++ Library" /><link rel="up" href="intro.html" title="Part I. Introduction" /><link rel="prev" href="intro.html" title="Part I. Introduction" /><link rel="next" href="license.html" title="License" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 1. Status</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="intro.html">Prev</a> </td><th width="60%" align="center">Part I. |
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| </th><td width="20%" align="right"> <a accesskey="n" href="license.html">Next</a></td></tr></table><hr /></div><div class="chapter"><div class="titlepage"><div><div><h2 class="title"><a id="manual.intro.status"></a>Chapter 1. Status</h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl class="toc"><dt><span class="section"><a href="status.html#manual.intro.status.iso">Implementation Status</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#status.iso.1998">C++ 1998/2003</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.1998.status">Implementation Status</a></span></dt><dt><span class="section"><a href="status.html#iso.1998.specific">Implementation Specific Behavior</a></span></dt></dl></dd><dt><span class="section"><a href="status.html#status.iso.2011">C++ 2011</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.2011.specific">Implementation Specific Behavior</a></span></dt></dl></dd><dt><span class="section"><a href="status.html#status.iso.2014">C++ 2014</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.2014.specific">Implementation Specific Behavior</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.2014.filesystemts">Filesystem TS</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="status.html#status.iso.2017">C++ 2017</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.2017.specific">Implementation Specific Behavior</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.2017.par2ts">Parallelism 2 TS</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="status.html#status.iso.2020">C++ 2020</a></span></dt><dt><span class="section"><a href="status.html#status.iso.tr1">C++ TR1</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.tr1.specific">Implementation Specific Behavior</a></span></dt></dl></dd><dt><span class="section"><a href="status.html#status.iso.tr24733">C++ TR 24733</a></span></dt><dt><span class="section"><a href="status.html#status.iso.specfun">C++ IS 29124</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.specfun.specific">Implementation Specific Behavior</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="license.html">License</a></span></dt><dd><dl><dt><span class="section"><a href="license.html#manual.intro.status.license.gpl">The Code: GPL</a></span></dt><dt><span class="section"><a href="license.html#manual.intro.status.license.fdl">The Documentation: GPL, FDL</a></span></dt></dl></dd><dt><span class="section"><a href="bugs.html">Bugs</a></span></dt><dd><dl><dt><span class="section"><a href="bugs.html#manual.intro.status.bugs.impl">Implementation Bugs</a></span></dt><dt><span class="section"><a href="bugs.html#manual.intro.status.bugs.iso">Standard Bugs</a></span></dt></dl></dd></dl></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.intro.status.iso"></a>Implementation Status</h2></div></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="status.iso.1998"></a>C++ 1998/2003</h3></div></div></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a id="iso.1998.status"></a>Implementation Status</h4></div></div></div><p> |
| This status table is based on the table of contents of ISO/IEC 14882:2003. |
| </p><p> |
| This section describes the C++ support in mainline GCC, not in any |
| particular release. |
| </p><div class="table"><a id="table.cxx98_status"></a><p class="title"><strong>Table 1.1. C++ 1998/2003 Implementation Status</strong></p><div class="table-contents"><table class="table" summary="C++ 1998/2003 Implementation Status" border="1"><colgroup><col align="left" class="c1" /><col align="left" class="c2" /><col align="left" class="c3" /><col align="left" class="c4" /></colgroup><thead><tr><th align="left">Section</th><th align="left">Description</th><th align="left">Status</th><th align="left">Comments</th></tr></thead><tbody><tr><td align="left"> |
| <span class="emphasis"><em>18</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Language support</em></span> |
| </td></tr><tr><td align="left">18.1</td><td align="left">Types</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.2</td><td align="left">Implementation properties</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.2.1</td><td align="left">Numeric Limits</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">18.2.1.1</td><td align="left">Class template <code class="code">numeric_limits</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.2.1.2</td><td align="left"><code class="code">numeric_limits</code> members</td><td align="left">Y</td><td class="auto-generated"> </td></tr><tr><td align="left">18.2.1.3</td><td align="left"><code class="code">float_round_style</code></td><td align="left">Y</td><td class="auto-generated"> </td></tr><tr><td align="left">18.2.1.4</td><td align="left"><code class="code">float_denorm_style</code></td><td align="left">Y</td><td class="auto-generated"> </td></tr><tr><td align="left">18.2.1.5</td><td align="left"><code class="code">numeric_limits</code> specializations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.2.2</td><td align="left">C Library</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.3</td><td align="left">Start and termination</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.4</td><td align="left">Dynamic memory management</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.5</td><td align="left">Type identification</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">18.5.1</td><td align="left">Class type_info</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.5.2</td><td align="left">Class bad_cast</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.5.3</td><td align="left">Class bad_typeid</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.6</td><td align="left">Exception handling</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">18.6.1</td><td align="left">Class exception</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.6.2</td><td align="left">Violation exception-specifications</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.6.3</td><td align="left">Abnormal termination</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.6.4</td><td align="left"><code class="code">uncaught_exception</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.7</td><td align="left">Other runtime support</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>19</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Diagnostics</em></span> |
| </td></tr><tr><td align="left">19.1</td><td align="left">Exception classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">19.2</td><td align="left">Assertions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">19.3</td><td align="left">Error numbers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>20</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>General utilities</em></span> |
| </td></tr><tr><td align="left">20.1</td><td align="left">Requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.2</td><td align="left">Utility components</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.2.1</td><td align="left">Operators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.2.2</td><td align="left"><code class="code">pair</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.3</td><td align="left">Function objects</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.3.1</td><td align="left">Base</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.3.2</td><td align="left">Arithmetic operation</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.3.3</td><td align="left">Comparisons</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.3.4</td><td align="left">Logical operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.3.5</td><td align="left">Negators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.3.6</td><td align="left">Binders</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.3.7</td><td align="left">Adaptors for pointers to functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.3.8</td><td align="left">Adaptors for pointers to members</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4</td><td align="left">Memory</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.4.1</td><td align="left">The default allocator</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.2</td><td align="left">Raw storage iterator</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.3</td><td align="left">Temporary buffers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.4</td><td align="left">Specialized algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.4.1</td><td align="left"><code class="code">uninitialized_copy</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.4.2</td><td align="left"><code class="code">uninitialized_fill</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.4.3</td><td align="left"><code class="code">uninitialized_fill_n</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.5</td><td align="left">Class template <code class="code">auto_ptr</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.6</td><td align="left">C library</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>21</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Strings</em></span> |
| </td></tr><tr><td align="left">21.1</td><td align="left">Character traits</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">21.1.1</td><td align="left">Character traits requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.1.2</td><td align="left">traits typedef</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.1.3</td><td align="left"><code class="code">char_traits</code> specializations</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">21.1.3.1</td><td align="left">struct <code class="code">char_traits<char></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.1.3.2</td><td align="left">struct <code class="code">char_traits<wchar_t></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.2</td><td align="left">String classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.3</td><td align="left">Class template <code class="code">basic_string</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.4</td><td align="left">Null-terminated sequence utilities</td><td align="left">Y</td><td align="left">C library dependency</td></tr><tr><td align="left"> |
| <span class="emphasis"><em>22</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Localization</em></span> |
| </td></tr><tr><td align="left">22.1</td><td align="left">Locales</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">22.1.1</td><td align="left">Class <code class="code">locale</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.1.2</td><td align="left"><code class="code">locale</code> globals</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.1.3</td><td align="left">Convenience interfaces</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">22.1.3.1</td><td align="left">Character classification</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.1.3.2</td><td align="left">Character conversions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2</td><td align="left">Standard locale categories</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">22.2.1</td><td align="left"><code class="code">ctype</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2.2</td><td align="left">Numeric</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">22.2.2.1</td><td align="left"><code class="code">num_get</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2.2.2</td><td align="left"><code class="code">num_put</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2.3</td><td align="left"><code class="code">num_punct</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2.4</td><td align="left"><code class="code">collate</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2.5</td><td align="left">Time</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">22.2.5.1</td><td align="left"><code class="code">time_get</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2.5.2</td><td align="left"><code class="code">time_get_byname</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2.5.3</td><td align="left"><code class="code">time_put</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2.5.3</td><td align="left"><code class="code">time_put_byname</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2.6</td><td align="left">Monetary</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">22.2.6.1</td><td align="left"><code class="code">money_get</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2.6.2</td><td align="left"><code class="code">money_put</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2.6.3</td><td align="left"><code class="code">money_punct</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2.6.4</td><td align="left"><code class="code">money_punct_byname</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2.7</td><td align="left"><code class="code">messages</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2.8</td><td align="left">Program-defined facets</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.3</td><td align="left">C Library Locales</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>23</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Containers</em></span> |
| </td></tr><tr><td align="left">23.1</td><td align="left">Container requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.2</td><td align="left">Sequence containers</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.2.1</td><td align="left">Class template <code class="code">deque</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.2.2</td><td align="left">Class template <code class="code">list</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.2.3</td><td align="left">Adaptors</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.2.3.1</td><td align="left">Class template <code class="code">queue</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.2.3.2</td><td align="left">Class template <code class="code">priority_queue</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.2.3.3</td><td align="left">Class template <code class="code">stack</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.2.4</td><td align="left">Class template <code class="code">vector</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.2.5</td><td align="left">Class <code class="code">vector<bool></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.3</td><td align="left">Associative containers</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.3.1</td><td align="left">Class template <code class="code">map</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.3.2</td><td align="left">Class template <code class="code">multimap</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.3.3</td><td align="left">Class template <code class="code">set</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.3.4</td><td align="left">Class template <code class="code">multiset</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>24</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Iterators</em></span> |
| </td></tr><tr><td align="left">24.1</td><td align="left">Requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.2</td><td align="left">Header <code class="code"><iterator></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.3</td><td align="left">Iterator primitives</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.4</td><td align="left">Predefined iterators and Iterator adaptors</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">24.4.1</td><td align="left">Reverse iterators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.4.2</td><td align="left">Insert iterators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.5</td><td align="left">Stream iterators</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">24.5.1</td><td align="left">Class template <code class="code">istream_iterator</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.5.2</td><td align="left">Class template <code class="code">ostream_iterator</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.5.3</td><td align="left">Class template <code class="code">istreambuf_iterator</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.5.4</td><td align="left">Class template <code class="code">ostreambuf_iterator</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>25</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Algorithms</em></span> |
| </td></tr><tr><td align="left">25.1</td><td align="left">Non-modifying sequence operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">25.2</td><td align="left">Mutating sequence operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">25.3</td><td align="left">Sorting and related operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">25.4</td><td align="left">C library algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>26</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Numerics</em></span> |
| </td></tr><tr><td align="left">26.1</td><td align="left">Numeric type requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.2</td><td align="left">Complex numbers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.3</td><td align="left">Numeric arrays</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.3.1</td><td align="left">Header <code class="code"><valarray></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.3.2</td><td align="left">Class template <code class="code">valarray</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.3.3</td><td align="left"><code class="code">valarray</code> non-member operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.3.4</td><td align="left">Class <code class="code">slice</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.3.5</td><td align="left">Class template <code class="code">slice_array</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.3.6</td><td align="left">Class <code class="code">gslice</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.3.7</td><td align="left">Class template <code class="code">gslice_array</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.3.8</td><td align="left">Class template <code class="code">mask_array</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.3.9</td><td align="left">Class template <code class="code">indirect_array</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.4</td><td align="left">Generalized numeric operations</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.4.1</td><td align="left"><code class="code">accumulate</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.4.2</td><td align="left"><code class="code">inner_product</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.4.3</td><td align="left"><code class="code">partial_sum</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.4.4</td><td align="left"><code class="code">adjacent_difference</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.4.5</td><td align="left">iota</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5</td><td align="left">C Library</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>27</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Input/output</em></span> |
| </td></tr><tr><td align="left">27.1</td><td align="left">Requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.2</td><td align="left">Forward declarations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.3</td><td align="left">Standard iostream objects</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.3.1</td><td align="left">Narrow stream objects</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.3.2</td><td align="left">Wide stream objects</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.4</td><td align="left">Iostreams base classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.5</td><td align="left">Stream buffers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.6</td><td align="left">Formatting and manipulators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.7</td><td align="left">String-based streams</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.8</td><td align="left">File-based streams</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>Appendix D</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Compatibility features</em></span> |
| </td></tr><tr><td align="left">D.1</td><td align="left">Increment operator with bool operand</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.2</td><td align="left"><code class="code">static</code> keyword</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.3</td><td align="left">Access declarations</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.4</td><td align="left">Implicit conversion from const strings</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.5</td><td align="left">C standard library headers</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.6</td><td align="left">Old iostreams members</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.7</td><td align="left">char* streams</td><td align="left"> </td><td align="left"> </td></tr></tbody></table></div></div><br class="table-break" /></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a id="iso.1998.specific"></a>Implementation Specific Behavior</h4></div></div></div><p> |
| The ISO standard defines the following phrase: |
| </p><div class="blockquote"><blockquote class="blockquote"><div class="variablelist"><dl class="variablelist"><dt><span class="term"> |
| <code class="code">[1.3.5] implementation-defined behavior</code> |
| </span></dt><dd><p> |
| Behavior, for a well-formed program construct and correct data, that |
| depends on the implementation <span class="emphasis"><em>and that each implementation |
| shall document</em></span>. |
| </p></dd></dl></div></blockquote></div><p> |
| We do so here, for the C++ library only. Behavior of the |
| compiler, linker, runtime loader, and other elements of "the |
| implementation" are documented elsewhere. Everything listed |
| in Annex B, Implementation Qualities, are also part of the |
| compiler, not the library. |
| </p><p> |
| For each entry, we give the section number of the standard, when |
| applicable. This list is probably incomplet and inkorrekt. |
| </p><p> |
| <span class="emphasis"><em>[1.9]/11 #3</em></span> If <code class="code">isatty(3)</code> is true, then |
| interactive stream support is implied. |
| </p><p> |
| <span class="emphasis"><em>[17.4.4.5]</em></span> Non-reentrant functions are probably best |
| discussed in the various sections on multithreading (see above). |
| </p><p><span class="emphasis"><em>[18.1]/4</em></span> The type of <code class="code">NULL</code> is described |
| under <a class="link" href="support.html#std.support.types.null" title="NULL">Support</a>. |
| </p><p><span class="emphasis"><em>[18.3]/8</em></span> Even though it's listed in the library |
| sections, libstdc++ has zero control over what the cleanup code hands |
| back to the runtime loader. Talk to the compiler people. :-) |
| </p><p><span class="emphasis"><em>[18.4.2.1]/5</em></span> (bad_alloc), |
| <span class="emphasis"><em>[18.5.2]/5</em></span> (bad_cast), |
| <span class="emphasis"><em>[18.5.3]/5</em></span> (bad_typeid), |
| <span class="emphasis"><em>[18.6.1]/8</em></span> (exception), |
| <span class="emphasis"><em>[18.6.2.1]/5</em></span> (bad_exception): The <code class="code">what()</code> |
| member function of class <code class="code">std::exception</code>, and these other |
| classes publicly derived from it, returns the name of the |
| class, e.g. <code class="literal">"std::bad_alloc"</code>. |
| </p><p><span class="emphasis"><em>[18.5.1]/7</em></span> The return value of |
| <code class="code">std::type_info::name()</code> is the mangled type name. |
| You will need to call <code class="code">c++filt</code> and pass the names as |
| command-line parameters to demangle them, or call a |
| <a class="link" href="ext_demangling.html" title="Chapter 28. Demangling">runtime demangler function</a>. |
| </p><p><span class="emphasis"><em>[20.1.5]/5</em></span> <span class="emphasis"><em>"Implementors are encouraged to |
| supply libraries that can accept allocators that encapsulate more |
| general memory models and that support non-equal instances. In such |
| implementations, any requirements imposed on allocators by containers |
| beyond those requirements that appear in Table 32, and the semantics |
| of containers and algorithms when allocator instances compare |
| non-equal, are implementation-defined."</em></span> There is experimental |
| support for non-equal allocators in the standard containers in C++98 |
| mode. There are no additional requirements on allocators. It is undefined |
| behaviour to swap two containers if their allocators are not equal. |
| </p><p><span class="emphasis"><em>[21.1.3.1]/3,4</em></span>, |
| <span class="emphasis"><em>[21.1.3.2]/2</em></span>, |
| <span class="emphasis"><em>[21.3]/6 basic_string::iterator, basic_string::const_iterator</em></span>, |
| <span class="emphasis"><em>[23.*]'s foo::iterator</em></span>, |
| <span class="emphasis"><em>[27.*]'s foo::*_type</em></span>, |
| <span class="emphasis"><em>others...</em></span> |
| Nope, these types are called implementation-defined because you |
| shouldn't be taking advantage of their underlying types. Listing them |
| here would defeat the purpose. :-) |
| </p><p><span class="emphasis"><em>[21.1.3.1]/5</em></span> I don't really know about |
| the <span class="type">mbstate_t</span> stuff... see |
| the <a class="link" href="facets.html#std.localization.facet.codecvt" title="codecvt"><code class="code">codecvt</code> |
| notes</a> for what does exist. |
| </p><p><span class="emphasis"><em>[22.*]</em></span> Anything and everything we have on locale |
| implementation will be described under |
| <a class="link" href="localization.html#std.localization.locales.locale" title="locale">Localization</a>. |
| </p><p><span class="emphasis"><em>[23.*]</em></span> All of the containers in this clause |
| define <span class="type">size_type</span> as <span class="type">std::size_t</span> and |
| <span class="type">difference_type</span> as <span class="type">std::ptrdiff_t</span>. |
| </p><p><span class="emphasis"><em>[26.2.8]/9</em></span> I have no idea what |
| <code class="code">complex<T></code>'s <code class="code">pow(0,0)</code> returns. |
| </p><p><span class="emphasis"><em>[27.4.2.4]/2</em></span> Calling |
| <code class="code">std::ios_base::sync_with_stdio</code> after I/O has already been |
| performed on the standard stream objects will |
| flush the buffers, and |
| destroy and recreate the underlying buffer instances. Whether or not |
| the previously-written I/O is destroyed in this process depends mostly |
| on the <code class="code">--enable-libio</code> choice: for stdio, if the written |
| data is already in the stdio buffer, the data may be completely safe! |
| </p><p><span class="emphasis"><em>[27.6.1.1.2]</em></span>, |
| <span class="emphasis"><em>[27.6.2.3]</em></span> The I/O sentry ctor and dtor can perform |
| additional work than the minimum required. We are not currently taking |
| advantage of this yet. |
| </p><p><span class="emphasis"><em>[27.7.1.3]/16</em></span>, |
| <span class="emphasis"><em>[27.8.1.4]/10</em></span> |
| The effects of <code class="code">pubsetbuf/setbuf</code> are described in the |
| <a class="link" href="io.html" title="Chapter 13. Input and Output">Input and Output</a> chapter. |
| </p><p><span class="emphasis"><em>[27.8.1.4]/16</em></span> Calling <code class="code">fstream::sync</code> when |
| a get area exists will... whatever <code class="code">fflush()</code> does, I think. |
| </p></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="status.iso.2011"></a>C++ 2011</h3></div></div></div><p> |
| <a id="status.iso.200x"></a> |
| This table is based on the table of contents of ISO/IEC |
| JTC1 SC22 WG21 Doc No: N3290 Date: 2011-04-11 |
| Final Draft International Standard, Standard for Programming Language C++ |
| </p><p> |
| In this implementation the <code class="literal">-std=gnu++11</code> or |
| <code class="literal">-std=c++11</code> flag must be used to enable language |
| and library |
| features. See <a class="link" href="using.html#manual.intro.using.flags" title="Command Options">dialect</a> |
| options. The pre-defined symbol |
| <code class="constant">__cplusplus</code> is used to check for the |
| presence of the required flag. |
| GCC 5.1 was the first release with non-experimental C++11 support, |
| so the API and ABI of features added in C++11 is only stable |
| since that release. |
| </p><p> |
| This status table is based on the table of contents of ISO/IEC 14882:2011. |
| </p><p> |
| This section describes the C++11 support in mainline GCC, not in any |
| particular release. |
| </p><div class="table"><a id="table.cxx11_status"></a><p class="title"><strong>Table 1.2. C++ 2011 Implementation Status</strong></p><div class="table-contents"><table class="table" summary="C++ 2011 Implementation Status" border="1"><colgroup><col align="left" class="c1" /><col align="left" class="c2" /><col align="left" class="c3" /><col align="left" class="c4" /></colgroup><thead><tr><th align="left">Section</th><th align="left">Description</th><th align="left">Status</th><th align="left">Comments</th></tr></thead><tbody><tr><td align="left"> |
| <span class="emphasis"><em>18</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Language support</em></span> |
| </td></tr><tr><td align="left">18.1</td><td align="left">General</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">18.2</td><td align="left">Types</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.3</td><td align="left">Implementation properties</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">18.3.2</td><td align="left">Numeric Limits</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">18.3.2.3</td><td align="left">Class template <code class="code">numeric_limits</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.3.2.4</td><td align="left"><code class="code">numeric_limits</code> members</td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">18.3.2.5</td><td align="left"><code class="code">float_round_style</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">18.3.2.6</td><td align="left"><code class="code">float_denorm_style</code></td><td align="left">N</td><td align="left"> </td></tr><tr><td align="left">18.3.2.7</td><td align="left"><code class="code">numeric_limits</code> specializations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.3.3</td><td align="left">C Library</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.4</td><td align="left">Integer types</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">18.4.1</td><td align="left">Header <code class="code"><cstdint></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">18.5</td><td align="left">Start and termination</td><td align="left">Partial</td><td align="left">C library dependency for quick_exit, at_quick_exit</td></tr><tr><td align="left">18.6</td><td align="left">Dynamic memory management</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.7</td><td align="left">Type identification</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">18.7.1</td><td align="left">Class type_info</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.7.2</td><td align="left">Class bad_cast</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.7.3</td><td align="left">Class bad_typeid</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.8</td><td align="left">Exception handling</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">18.8.1</td><td align="left">Class exception</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.8.2</td><td align="left">Class bad_exception</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.8.3</td><td align="left">Abnormal termination</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.8.4</td><td align="left"><code class="code">uncaught_exception</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.8.5</td><td align="left">Exception Propagation</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.8.6</td><td align="left"><code class="code">nested_exception</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.9</td><td align="left">Initializer lists</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">18.9.1</td><td align="left">Initializer list constructors</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.9.2</td><td align="left">Initializer list access</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.9.3</td><td align="left">Initializer list range access</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.10</td><td align="left">Other runtime support</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>19</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Diagnostics</em></span> |
| </td></tr><tr><td align="left">19.1</td><td align="left">General</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">19.2</td><td align="left">Exception classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">19.3</td><td align="left">Assertions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">19.4</td><td align="left">Error numbers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">19.5</td><td align="left">System error support</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">19.5.1</td><td align="left">Class <code class="code">error_category</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">19.5.2</td><td align="left">Class <code class="code">error_code</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">19.5.3</td><td align="left">Class <code class="code">error_condition</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">19.5.4</td><td align="left">Comparison operators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">19.5.5</td><td align="left">Class <code class="code">system_error</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>20</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>General utilities</em></span> |
| </td></tr><tr><td align="left">20.1</td><td align="left">General</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.2</td><td align="left">Utility components</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.2.1</td><td align="left">Operators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.2.2</td><td align="left">swap</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.2.3</td><td align="left">forward/move helpers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.2.4</td><td align="left">Function template <code class="code">declval</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.3</td><td align="left">Pairs</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.3.1</td><td align="left">In general</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.3.2</td><td align="left">Class template <code class="code">pair</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.3.3</td><td align="left">Specialized algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.3.4</td><td align="left">Tuple-like access to <code class="code">pair</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.3.5</td><td align="left">Piecewise construction</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4</td><td align="left">Tuples</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.4.1</td><td align="left">In general</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.4.2</td><td align="left">Class template <code class="code">tuple</code></td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.4.2.1</td><td align="left">Construction</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.2.2</td><td align="left">Assignment</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.2.3</td><td align="left">Swap</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.2.4</td><td align="left">Tuple creation functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.2.5</td><td align="left">Tuple helper classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.2.6</td><td align="left">Element access</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.2.7</td><td align="left">Relational operators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.2.8</td><td align="left">Tuple traits</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4.2.9</td><td align="left">Tuple specialized algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.5</td><td align="left">Class template <code class="code">bitset</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.5.1</td><td align="left"><code class="code">bitset</code> constructors</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.5.2</td><td align="left"><code class="code">bitset</code> members</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.5.3</td><td align="left"><code class="code">bitset</code> hash support</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.5.4</td><td align="left"><code class="code">bitset</code> operators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6</td><td align="left">Memory</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.6.1</td><td align="left">In general</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.6.2</td><td align="left">Header <code class="code"><memory></code> synopsis</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.6.3</td><td align="left">Pointer traits</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6.4</td><td align="left">Pointer safety</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6.5</td><td align="left">Align</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6.6</td><td align="left">Allocator argument tag</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6.7</td><td align="left"><code class="code">uses_allocator</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6.8</td><td align="left">Allocator traits</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6.9</td><td align="left">The default allocator</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6.10</td><td align="left">Raw storage iterator</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6.11</td><td align="left">Temporary buffers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6.12</td><td align="left">Specialized algorithms</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.6.12.1</td><td align="left"><code class="code">addressof</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6.12.2</td><td align="left"><code class="code">uninitialized_copy</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6.12.3</td><td align="left"><code class="code">uninitialized_fill</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6.12.4</td><td align="left"><code class="code">uninitialized_fill_n</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6.13</td><td align="left">C library</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.7</td><td align="left">Smart pointers</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.7.1</td><td align="left">Class template <code class="code">unique_ptr</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.7.2</td><td align="left">Shared-ownership pointers</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.7.2.1</td><td align="left">Class <code class="code">bad_weak_ptr</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.7.2.2</td><td align="left">Class template <code class="code">shared_ptr</code></td><td align="left">Y</td><td align="left"> |
| Uses code from |
| <a class="link" href="http://www.boost.org/libs/smart_ptr/shared_ptr.htm" target="_top">boost::shared_ptr</a>. |
| </td></tr><tr><td align="left">20.7.2.3</td><td align="left">Class template <code class="code">weak_ptr</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.7.2.4</td><td align="left">Class template <code class="code">enable_shared_from_this</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.7.2.5</td><td align="left"><code class="code">shared_ptr</code> atomic access</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.7.2.6</td><td align="left">Smart pointer hash support</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8</td><td align="left">Function objects</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.8.1</td><td align="left">Definitions</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.8.2</td><td align="left">Requirements</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.8.3</td><td align="left">Class template <code class="code">reference_wrapper</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8.4</td><td align="left">Arithmetic operation</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8.5</td><td align="left">Comparisons</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8.6</td><td align="left">Logical operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8.7</td><td align="left">Bitwise operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8.8</td><td align="left">Negators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8.9</td><td align="left">Function template <code class="code">bind</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8.10</td><td align="left">Function template <code class="code">mem_fn</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8.11</td><td align="left">Polymorphic function wrappers</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.8.11.1</td><td align="left">Class <code class="code">bad_function_call</code></td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">20.8.11.2</td><td align="left">Class template <code class="code">function</code></td><td align="left">Partial</td><td align="left">Missing allocator support</td></tr><tr><td align="left">20.8.12</td><td align="left">Class template <code class="code">hash</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9</td><td align="left">Metaprogramming and type traits</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.9.1</td><td align="left">Requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.2</td><td align="left">Header <code class="code"><type_traits></code> synopsis</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.9.3</td><td align="left">Helper classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.4</td><td align="left">Unary Type Traits</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.4.1</td><td align="left">Primary type categories</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.4.2</td><td align="left">Composite type traits</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.4.3</td><td align="left">Type properties</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.5</td><td align="left">Type property queries</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.6</td><td align="left">Relationships between types</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.7</td><td align="left">Transformations between types</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.9.7.1</td><td align="left">Const-volatile modifications</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.7.2</td><td align="left">Reference modifications</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.7.3</td><td align="left">Sign modifications</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.7.4</td><td align="left">Array modifications</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.7.5</td><td align="left">Pointer modifications</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.7.6</td><td align="left">Other transformations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.10</td><td align="left">Compile-time rational arithmetic</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.10.1</td><td align="left">In general</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.10.2</td><td align="left">Header <code class="code"><ratio></code> synopsis</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.10.3</td><td align="left">Class template <code class="code">ratio</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.10.4</td><td align="left">Arithmetic on <code class="code">ratio</code>s</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.10.5</td><td align="left">Comparison of <code class="code">ratio</code>s</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.10.6</td><td align="left">SI types for <code class="code">ratio</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.11</td><td align="left">Time utilities</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.11.3</td><td align="left">Clock requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.11.4</td><td align="left">Time-related traits</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.11.4.1</td><td align="left"><code class="code">treat_as_floating_point</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.11.4.2</td><td align="left"><code class="code">duration_values</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.11.4.3</td><td align="left">Specializations of <code class="code">common_type</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.11.5</td><td align="left">Class template <code class="code">duration</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.11.6</td><td align="left">Class template <code class="code">time_point</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.11.7</td><td align="left">Clocks</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.11.7.1</td><td align="left">Class <code class="code">system_clock</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.11.7.2</td><td align="left">Class <code class="code">steady_clock</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.11.7.3</td><td align="left">Class <code class="code">high_resolution_clock</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.11.8</td><td align="left">Date and time functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.12</td><td align="left">Scoped allocator adaptor</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.12.1</td><td align="left">Header <code class="code"><scoped_allocator></code> synopsis</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.12.2</td><td align="left">Scoped allocator adaptor member types</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.12.3</td><td align="left">Scoped allocator adaptor constructors</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.12.4</td><td align="left">Scoped allocator adaptor members</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.12.5</td><td align="left">Scoped allocator operators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.13</td><td align="left">Class <code class="code">type_index</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>21</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Strings</em></span> |
| </td></tr><tr><td align="left">21.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.2</td><td align="left">Character traits</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">21.2.1</td><td align="left">Character traits requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.2.2</td><td align="left">traits typedefs</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.2.3</td><td align="left"><code class="code">char_traits</code> specializations</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">21.2.3.1</td><td align="left">struct <code class="code">char_traits<char></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.2.3.2</td><td align="left">struct <code class="code">char_traits<char16_t></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.2.3.3</td><td align="left">struct <code class="code">char_traits<char32_t></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.2.3.4</td><td align="left">struct <code class="code">char_traits<wchar_t></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.3</td><td align="left">String classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.4</td><td align="left">Class template <code class="code">basic_string</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.5</td><td align="left">Numeric Conversions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.6</td><td align="left">Hash support</td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">21.7</td><td align="left">Null-terminated sequence utilities</td><td align="left">Partial</td><td align="left">C library dependency. </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>22</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Localization</em></span> |
| </td></tr><tr><td align="left">22.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2</td><td align="left">Header <code class="code"><locale></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.3</td><td align="left">Locales</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">22.3.1</td><td align="left">Class <code class="code">locale</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.3.2</td><td align="left"><code class="code">locale</code> globals</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.3.3</td><td align="left">Convenience interfaces</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">22.3.3.1</td><td align="left">Character classification</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.3.3.2</td><td align="left">Conversions</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">22.3.3.2.1</td><td align="left">Character conversions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.3.3.2.2</td><td align="left"><code class="code">string</code> conversions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.3.3.2.3</td><td align="left">Buffer conversions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4</td><td align="left">Standard <code class="code">locale</code> categories</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">22.4.1</td><td align="left">The <code class="code">ctype</code> category</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4.2</td><td align="left">The numeric category</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">22.4.2.1</td><td align="left"><code class="code">num_get</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4.2.2</td><td align="left"><code class="code">num_put</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4.3</td><td align="left">The numeric punctuation facet</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4.4</td><td align="left">The collate category</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4.5</td><td align="left">The time category</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">22.4.5.1</td><td align="left">Class template <code class="code">time_get</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4.5.2</td><td align="left">Class template <code class="code">time_get_byname</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4.5.3</td><td align="left">Class template <code class="code">time_put</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4.5.3</td><td align="left">Class template <code class="code">time_put_byname</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4.6</td><td align="left">The monetary category</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">22.4.6.1</td><td align="left">Class template <code class="code">money_get</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4.6.2</td><td align="left">Class template <code class="code">money_put</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4.6.3</td><td align="left">Class template <code class="code">money_punct</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4.6.4</td><td align="left">Class template <code class="code">money_punct_byname</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4.7</td><td align="left">The message retrieval category</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4.8</td><td align="left">Program-defined facets</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.5</td><td align="left">Standard code conversion facets</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.6</td><td align="left">C Library Locales</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>23</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Containers</em></span> |
| </td></tr><tr><td align="left">23.1</td><td align="left">General</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.2</td><td align="left">Container requirements</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.2.1</td><td align="left">General container requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.2.2</td><td align="left">Container data races</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.2.3</td><td align="left">Sequence containers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.2.4</td><td align="left">Associative containers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.2.5</td><td align="left">Unordered associative containers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.3</td><td align="left">Sequence containers</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.3.2</td><td align="left">Class template <code class="code">array</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.3.3</td><td align="left">Class template <code class="code">deque</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.3.4</td><td align="left">Class template <code class="code">forward_list</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.3.5</td><td align="left">Class template <code class="code">list</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.3.6</td><td align="left">Class template <code class="code">vector</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.3.7</td><td align="left">Class <code class="code">vector<bool></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.4</td><td align="left">Associative containers</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.4.4</td><td align="left">Class template <code class="code">map</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.4.5</td><td align="left">Class template <code class="code">multimap</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.4.6</td><td align="left">Class template <code class="code">set</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.4.7</td><td align="left">Class template <code class="code">multiset</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.5</td><td align="left">Unordered associative containers</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.5.4</td><td align="left">Class template <code class="code">unordered_map</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.5.5</td><td align="left">Class template <code class="code">unordered_multimap</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.5.6</td><td align="left">Class template <code class="code">unordered_set</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.5.7</td><td align="left">Class template <code class="code">unordered_multiset</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.6</td><td align="left">Container adaptors</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.6.1</td><td align="left">Class template <code class="code">queue</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.6.2</td><td align="left">Class template <code class="code">priority_queue</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.6.3</td><td align="left">Class template <code class="code">stack</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>24</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Iterators</em></span> |
| </td></tr><tr><td align="left">24.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.2</td><td align="left">Iterator requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.3</td><td align="left">Header <code class="code"><iterator></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.4</td><td align="left">Iterator primitives</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.5</td><td align="left">Iterator adaptors</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">24.5.1</td><td align="left">Reverse iterators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.5.2</td><td align="left">Insert iterators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.5.3</td><td align="left">Move iterators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.6</td><td align="left">Stream iterators</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">24.6.1</td><td align="left">Class template <code class="code">istream_iterator</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.6.2</td><td align="left">Class template <code class="code">ostream_iterator</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.6.3</td><td align="left">Class template <code class="code">istreambuf_iterator</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.6.4</td><td align="left">Class template <code class="code">ostreambuf_iterator</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.6.5</td><td align="left">range access</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>25</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Algorithms</em></span> |
| </td></tr><tr><td align="left">25.1</td><td align="left">General</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">25.2</td><td align="left">Non-modifying sequence operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">25.3</td><td align="left">Mutating sequence operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">25.4</td><td align="left">Sorting and related operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">25.5</td><td align="left">C library algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>26</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Numerics</em></span> |
| </td></tr><tr><td align="left">26.1</td><td align="left">General</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.2</td><td align="left">Numeric type requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.3</td><td align="left">The floating-point environment</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.4</td><td align="left">Complex numbers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5</td><td align="left">Random number generation</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.5.1</td><td align="left">Requirements</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.5.2</td><td align="left">Header <code class="code"><random></code> synopsis</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.5.3</td><td align="left">Random number engine class templates</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.5.3.1</td><td align="left">Class template <code class="code">linear_congruential_engine</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.3.2</td><td align="left">Class template <code class="code">mersenne_twister_engine</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.3.3</td><td align="left">Class template <code class="code">subtract_with_carry_engine</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.4</td><td align="left">Random number engine adaptor class templates</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.5.4.2</td><td align="left">Class template <code class="code">discard_block_engine</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.4.3</td><td align="left">Class template <code class="code">independent_bits_engine</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.4.4</td><td align="left">Class template <code class="code">shuffle_order_engine</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.5</td><td align="left">Engines and engine adaptors with predefined parameters</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.6</td><td align="left">Class <code class="code">random_device</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.7</td><td align="left">Utilities</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.5.7.1</td><td align="left">Class <code class="code">seed_seq</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.7.2</td><td align="left">Function template <code class="code">generate_canonical</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8</td><td align="left">Random number distribution class templates</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.5.8.2</td><td align="left">Uniform distributions</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.5.8.2.1</td><td align="left">Class template <code class="code">uniform_int_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.2.2</td><td align="left">Class template <code class="code">uniform_real_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.3</td><td align="left">Bernoulli distributions</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.5.8.3.1</td><td align="left">Class <code class="code">bernoulli_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.3.2</td><td align="left">Class template <code class="code">binomial_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.3.3</td><td align="left">Class template <code class="code">geometric_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.3.4</td><td align="left">Class template <code class="code">negative_binomial_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.4</td><td align="left">Poisson distributions</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.5.8.4.1</td><td align="left">Class template <code class="code">poisson_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.4.2</td><td align="left">Class template <code class="code">exponential_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.4.3</td><td align="left">Class template <code class="code">gamma_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.4.4</td><td align="left">Class template <code class="code">weibull_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.4.5</td><td align="left">Class template <code class="code">extreme_value_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.5</td><td align="left">Normal distributions</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.5.8.5.1</td><td align="left">Class template <code class="code">normal_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.5.2</td><td align="left">Class template <code class="code">lognormal_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.5.3</td><td align="left">Class template <code class="code">chi_squared_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.5.4</td><td align="left">Class template <code class="code">cauchy_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.5.5</td><td align="left">Class template <code class="code">fisher_f_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.5.6</td><td align="left">Class template <code class="code">student_t_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.6</td><td align="left">Sampling distributions</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.5.8.6.1</td><td align="left">Class template <code class="code">discrete_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.6.2</td><td align="left">Class template <code class="code">piecewise_constant_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5.8.6.3</td><td align="left">Class template <code class="code">piecewise_linear_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.6</td><td align="left">Numeric arrays</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.6.1</td><td align="left">Header <code class="code"><valarray></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.6.2</td><td align="left">Class template <code class="code">valarray</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.6.3</td><td align="left"><code class="code">valarray</code> non-member operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.6.4</td><td align="left">Class <code class="code">slice</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.6.5</td><td align="left">Class template <code class="code">slice_array</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.6.6</td><td align="left">The <code class="code">gslice</code> class</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.6.7</td><td align="left">Class template <code class="code">gslice_array</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.6.8</td><td align="left">Class template <code class="code">mask_array</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.6.9</td><td align="left">Class template <code class="code">indirect_array</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.6.10</td><td align="left"><code class="code">valarray</code> range access</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.7</td><td align="left">Generalized numeric operations</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.7.1</td><td align="left">Header <code class="code"><numeric></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.7.2</td><td align="left">Accumulate></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.7.3</td><td align="left">Inner product</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.7.4</td><td align="left">Partial sum</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.7.5</td><td align="left">Adjacent difference</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.7.6</td><td align="left">Iota</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.8</td><td align="left">C Library</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>27</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Input/output library</em></span> |
| </td></tr><tr><td align="left">27.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.2</td><td align="left">Iostreams requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.2.1</td><td align="left">Imbue Limitations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.2.2</td><td align="left">Positioning Type Limitations</td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">27.2.3</td><td align="left">Thread safety</td><td align="left">Partial</td><td align="left"> </td></tr><tr><td align="left">27.3</td><td align="left">Forward declarations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.4</td><td align="left">Standard iostream objects</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.4.1</td><td align="left">Overview</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.4.2</td><td align="left">Narrow stream objects</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.4.3</td><td align="left">Wide stream objects</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.5</td><td align="left">Iostreams base classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.6</td><td align="left">Stream buffers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.7</td><td align="left">Formatting and manipulators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.8</td><td align="left">String-based streams</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.9</td><td align="left">File-based streams</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>28</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Regular expressions</em></span> |
| </td></tr><tr><td align="left">28.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.2</td><td align="left">Definitions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.3</td><td align="left">Requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.4</td><td align="left">Header <code class="code"><regex></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.5</td><td align="left">Namespace <code class="code">std::regex_constants</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.6</td><td align="left">Class <code class="code">regex_error</code></td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">28.7</td><td align="left">Class template <code class="code">regex_traits</code></td><td align="left">Partial</td><td align="left"><code class="code">transform_primary</code> is not correctly implemented</td></tr><tr><td align="left">28.8</td><td align="left">Class template <code class="code">basic_regex</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.9</td><td align="left">Class template <code class="code">sub_match</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.10</td><td align="left">Class template <code class="code">match_results</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.11</td><td align="left">Regular expression algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.12</td><td align="left">Regular expression Iterators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.13</td><td align="left">Modified ECMAScript regular expression grammar</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>29</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Atomic operations</em></span> |
| </td></tr><tr><td align="left">29.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.2</td><td align="left">Header <code class="code"><atomic></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.3</td><td align="left">Order and consistency</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.4</td><td align="left">Lock-free property</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.5</td><td align="left">Atomic types</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.6</td><td align="left">Operations on atomic types</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.7</td><td align="left">Flag Type and operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.8</td><td align="left">Fences</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>30</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Thread support</em></span> |
| </td></tr><tr><td align="left">30.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.2</td><td align="left">Requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.3</td><td align="left">Threads</td><td align="left"> </td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">30.3.1</td><td align="left">Class <code class="code">thread</code></td><td align="left">Partial</td><td align="left"><code class="code">thread::id</code> comparisons not well-defined</td></tr><tr><td align="left">30.3.2</td><td align="left">Namespace <code class="code">this_thread</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.4</td><td align="left">Mutual exclusion</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">30.4.1</td><td align="left">Mutex requirements</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">30.4.1.1</td><td align="left">In general</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">30.4.1.2</td><td align="left">Mutex types</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">30.4.1.2.1</td><td align="left">Class <code class="code">mutex</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.4.1.2.2</td><td align="left">Class <code class="code">recursive_mutex</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.4.1.3</td><td align="left">Timed mutex types</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">30.4.1.3.1</td><td align="left">Class <code class="code">timed_mutex</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.4.1.3.2</td><td align="left">Class <code class="code">recursive_timed_mutex</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.4.2</td><td align="left">Locks</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">30.4.2.1</td><td align="left">Class template <code class="code">lock_guard</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.4.2.2</td><td align="left">Class template <code class="code">unique_lock</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.4.3</td><td align="left">Generic locking algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.4.4</td><td align="left">Call once</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">30.4.4.1</td><td align="left">Struct <code class="code">once_flag</code></td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">30.4.4.2</td><td align="left">Function <code class="code">call_once</code></td><td align="left">Y</td><td align="left">Exception support is broken on non-Linux targets. |
| See <a class="link" href="https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66146" target="_top">PR |
| 66146</a>. |
| </td></tr><tr><td align="left">30.5</td><td align="left">Condition variables</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.5.1</td><td align="left">Class <code class="code">condition_variable</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.5.2</td><td align="left">Class <code class="code">condition_variable_any</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.6</td><td align="left">Futures</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">30.6.1</td><td align="left">Overview</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">30.6.2</td><td align="left">Error handling</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.6.3</td><td align="left">Class <code class="code">future_error</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.6.4</td><td align="left">Shared state</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.6.5</td><td align="left">Class template <code class="code">promise</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.6.6</td><td align="left">Class template <code class="code">future</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.6.7</td><td align="left">Class template <code class="code">shared_future</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.6.8</td><td align="left">Function template <code class="code">async</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.6.9</td><td align="left">Class template <code class="code">packaged_task</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>Appendix D</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Compatibility features</em></span> |
| </td></tr><tr><td align="left">D.1</td><td align="left">Increment operator with <code class="code">bool</code> operand</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.2</td><td align="left"><code class="code">register</code> keyword</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.3</td><td align="left">Implicit declaration of copy functions</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.4</td><td align="left">Dynamic exception specifications</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.5</td><td align="left">C standard library headers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.6</td><td align="left">Old iostreams members</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.7</td><td align="left"><code class="code">char*</code> streams</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.8</td><td align="left">Function objects</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.9</td><td align="left">Binders</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.10</td><td align="left"><code class="code">auto_ptr</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.11</td><td align="left">Violating exception-specifications</td><td align="left">Y</td><td align="left"> </td></tr></tbody></table></div></div><br class="table-break" /><div class="section"><div class="titlepage"><div><div><h4 class="title"><a id="iso.2011.specific"></a>Implementation Specific Behavior</h4></div></div></div><p>For behaviour which is also specified by the 1998 and 2003 standards, |
| see <a class="link" href="status.html#iso.1998.specific" title="Implementation Specific Behavior">C++ 1998/2003 Implementation |
| Specific Behavior</a>. This section only documents behaviour which |
| is new in the 2011 standard. |
| </p><p> |
| <span class="emphasis"><em>17.6.5.12 [res.on.exception.handling]</em></span> |
| There are no implementation-defined exception classes, only standard |
| exception classes (or classes derived from them) will be thrown. |
| </p><p> |
| <span class="emphasis"><em>17.6.5.14 [value.error.codes]</em></span> |
| The <code class="classname">error_category</code> for errors originating outside |
| the OS, and the possible error code values for each error category, |
| should be documented here. |
| </p><p> |
| <span class="emphasis"><em>18.6.2.2 [new.badlength]</em></span> |
| <code class="function">what()</code> returns |
| <code class="literal">"std::bad_array_new_length"</code>. |
| </p><p> |
| <span class="emphasis"><em>20.6.9.1 [allocator.member]/5</em></span> |
| Over-aligned types are not supported by |
| <code class="classname">std::allocator</code>. |
| </p><p> |
| <span class="emphasis"><em>20.7.2.2.1 [util.smartptr.shared.const]</em></span> |
| When a <code class="classname">shared_ptr</code> constructor fails |
| <code class="classname">bad_alloc</code> (or types derived from it) will |
| be thrown, or when an allocator is passed to the constructor then any |
| exceptions thrown by the allocator. |
| </p><p> |
| <span class="emphasis"><em>20.7.2.0 [util.smartptr.weakptr]</em></span> |
| <code class="code">what()</code> returns <code class="literal">"bad_weak_ptr"</code>. |
| </p><p> |
| <span class="emphasis"><em>20.8.9.1.3 [func.bind.place]/1</em></span> There are 29 |
| placeholders defined and the placeholder types are |
| <code class="literal">CopyAssignable</code>. |
| </p><p> |
| <span class="emphasis"><em>20.11.7.1 [time.clock.system]/3, /4</em></span> |
| Time point values are truncated to <code class="code">time_t</code> values. |
| There is no loss of precision for conversions in the other direction. |
| </p><p> |
| <span class="emphasis"><em>20.15.7 [meta.trans]/2</em></span> |
| <code class="classname">aligned_storage</code> does not support extended |
| alignment. |
| </p><p> |
| <span class="emphasis"><em>21.2.3.2 [char.traits.specializations.char16_t]</em></span>, |
| <span class="emphasis"><em>21.2.3.3 [char.traits.specializations.char32_t]</em></span> |
| The types <code class="classname">u16streampos</code> and |
| <code class="classname">u32streampos</code> are both synonyms for |
| <code class="classname">fpos<mbstate_t></code>. |
| The function <code class="function">eof</code> returns <code class="code">int_type(-1)</code>. |
| <code class="function">char_traits<char16_t>::to_int_type</code> will |
| transform the "noncharacter" U+FFFF to U+FFFD (REPLACEMENT CHARACTER). |
| This is done to ensure that <code class="function">to_int_type</code> never |
| returns the same value as <code class="function">eof</code>, which is U+FFFF. |
| </p><p> |
| <span class="emphasis"><em>22.3.1 [locale]</em></span> |
| There is one global locale for the whole program, not per-thread. |
| </p><p> |
| <span class="emphasis"><em>22.4.5.1.2 [locale.time.get.virtuals]</em></span>, |
| <span class="emphasis"><em>22.4.5.3.2 [locale.time.put.virtuals]</em></span> |
| Additional supported formats should be documented here. |
| </p><p> |
| <span class="emphasis"><em> 22.4.7.1.2 [locale.messages.virtuals]</em></span> |
| The mapping should be documented here. |
| </p><p> |
| <span class="emphasis"><em>23.3.2.1 [array.overview]</em></span> |
| <code class="classname">array<T, N>::iterator</code> is <code class="code">T*</code> and |
| <code class="classname">array<T, N>::const_iterator</code> is |
| <code class="code">const T*</code>. |
| </p><p> |
| <span class="emphasis"><em>23.5.4.2 [unord.map.cnstr]</em></span>, |
| <span class="emphasis"><em>23.5.5.2 [unord.multimap.cnstr]</em></span>, |
| <span class="emphasis"><em>23.5.6.2 [unord.set.cnstr]</em></span>, |
| <span class="emphasis"><em>23.5.7.2 [unord.multiset.cnstr]</em></span> |
| The default minimal bucket count is 0 for the default constructors, range |
| constructors and initializer-list constructors. |
| </p><p> |
| <span class="emphasis"><em>25.3.12 [alg.random.shuffle]</em></span> |
| The two-argument overload of <code class="function">random_shuffle</code> |
| uses <code class="function">rand</code> as the source of randomness. |
| </p><p> |
| <span class="emphasis"><em>26.5.5 [rand.predef]</em></span> |
| The type <code class="classname">default_random_engine</code> is a synonym for |
| <code class="classname">minstd_rand0</code>. |
| </p><p> |
| <span class="emphasis"><em> 26.5.6 [rand.device] </em></span> |
| The <code class="code">token</code> parameter of the |
| <code class="classname">random_device</code> constructor can be used to select |
| a specific source of random bytes. The valid token values are shown |
| in the list below. |
| The default constructor uses the token <code class="literal">"default"</code>. |
| </p><div class="variablelist"><dl class="variablelist"><dt><span class="term"><code class="literal">"default"</code></span></dt><dd> |
| Select the first available source from the other entries below. |
| This is the only token that is always valid. |
| </dd><dt><span class="term"><code class="literal">"rand_s"</code></span></dt><dd> |
| Use the MSVCRT <code class="function">rand_s</code> function. |
| This token is only valid for mingw-w64 targets. |
| </dd><dt><span class="term"><code class="literal">"rdseed"</code>, </span><span class="term"><code class="literal">"rdrand"</code> or <code class="literal">"rdrnd"</code></span></dt><dd> |
| Use the IA-32 <code class="literal">RDSEED</code> or <code class="literal">RDRAND</code> |
| instruction to read from an on-chip hardware random number generator. |
| These tokens are only valid for x86 and x86_64 targets when both |
| the assembler and CPU support the corresponding instruction. |
| </dd><dt><span class="term"><code class="literal">"/dev/urandom"</code>, </span><span class="term"><code class="literal">"/dev/random"</code></span></dt><dd> |
| Use the named character special file to read random bytes from. |
| These tokens are only valid when the device files are present |
| and readable by the current user. |
| </dd><dt><span class="term"><code class="literal">"mt19937"</code>, </span><span class="term">seed value</span></dt><dd> |
| When no source of nondeterministic random numbers is available a |
| <code class="classname">mersenne_twister_engine</code> will be used. |
| An integer seed value can be used as the token and will be converted |
| to an <code class="code">unsigned long</code> using <code class="function">strtoul</code>. |
| These tokens are only valid when no other source of random bytes |
| is available. |
| </dd></dl></div><p> |
| An exception of type <code class="classname">runtime_error</code> will be |
| thrown if a <code class="classname">random_device</code> object is constructed |
| with an invalid token, or if it cannot open or read from the source |
| of random bytes. |
| </p><p> |
| <span class="emphasis"><em>26.5.8.1 [rand.dist.general]</em></span> |
| The algorithms used by the distributions should be documented here. |
| </p><p> |
| <span class="emphasis"><em>26.8 [c.math]</em></span> Whether the |
| <code class="function">rand</code> function introduces data races depends on |
| the C library as the function is not provided by libstdc++. |
| </p><p> |
| <span class="emphasis"><em>27.8.2.1 [stringbuf.cons]</em></span> |
| Whether the sequence pointers are copied by the |
| <code class="classname">basic_stringbuf</code> move constructor should be |
| documented here. |
| </p><p> |
| <span class="emphasis"><em>27.9.1.2 [filebuf.cons]</em></span> |
| Whether the sequence pointers are copied by the |
| <code class="classname">basic_filebuf</code> move constructor should be |
| documented here. |
| </p><p> |
| <span class="emphasis"><em>28.5.1 [re.synopt]</em></span>, |
| <span class="emphasis"><em> 28.5.2 [re.matchflag] </em></span>, |
| <span class="emphasis"><em> 28.5.3 [re.err] </em></span> |
| <code class="code">syntax_option_type</code>, <code class="code">match_flag_type</code> |
| and <code class="code">error_type</code> are unscoped enumeration types. |
| </p><p> |
| <span class="emphasis"><em>28.7 [re.traits]</em></span> |
| The <code class="literal">blank</code> character class corresponds to the |
| <code class="code">ctype_base::blank</code> mask. |
| </p><p> |
| <span class="emphasis"><em>29.4 [atomics.lockfree]</em></span> |
| The values of the <code class="code">ATOMIC_xxx_LOCK_FREE</code> macros depend on |
| the target and cannot be listed here. |
| </p><p> |
| <span class="emphasis"><em>30.2.3 [thread.req.native]/1</em></span> |
| <code class="classname">native_handle_type</code> and |
| <code class="methodname">native_handle</code> are provided. The handle types |
| are defined in terms of the Gthreads abstraction layer, although this |
| is subject to change at any time. Any use of |
| <code class="classname">native_handle</code> is inherently non-portable and |
| not guaranteed to work between major releases of GCC. |
| </p><div class="variablelist"><dl class="variablelist"><dt><span class="term"><code class="classname">thread</code></span></dt><dd> |
| The native handle type is a typedef for <code class="code">__gthread_t</code> |
| i.e. <code class="code">pthread_t</code> when GCC is configured with the |
| <code class="literal">posix</code> thread model. |
| The value of the native handle is undefined for a thread |
| which is not joinable. |
| </dd><dt><span class="term"><code class="classname">mutex</code>, </span><span class="term"><code class="classname">timed_mutex</code></span></dt><dd> |
| The native handle type is <code class="code">__gthread_mutex_t*</code> i.e. |
| <code class="code">pthread_mutex_t*</code> for the <code class="literal">posix</code> |
| thread model. |
| </dd><dt><span class="term"><code class="classname">recursive_mutex</code>, </span><span class="term"><code class="classname">recursive_timed_mutex</code></span></dt><dd> |
| The native handle type is <code class="code">__gthread_recursive_mutex_t*</code> |
| i.e. <code class="code">pthread_mutex_t*</code> for the <code class="literal">posix</code> |
| thread model. |
| </dd><dt><span class="term"><code class="classname">condition_variable</code></span></dt><dd> |
| The native handle type is <code class="code">__gthread_cond_t*</code> i.e. |
| <code class="code">pthread_cond_t*</code> for the <code class="literal">posix</code> |
| thread model. |
| </dd></dl></div><p> |
| </p><p> |
| <span class="emphasis"><em>30.6.1 [futures.overview]/2</em></span> |
| <code class="code">launch</code> is a scoped enumeration type with |
| overloaded operators to support bitmask operations. There are no |
| additional bitmask elements defined. |
| </p></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="status.iso.2014"></a>C++ 2014</h3></div></div></div><p> |
| In this implementation the <code class="literal">-std=gnu++14</code> or |
| <code class="literal">-std=c++14</code> flag must be used to enable language |
| and library |
| features. See <a class="link" href="using.html#manual.intro.using.flags" title="Command Options">dialect</a> |
| options. The pre-defined symbol |
| <code class="constant">__cplusplus</code> is used to check for the |
| presence of the required flag. |
| GCC 6.1 was the first release with non-experimental C++14 support, |
| so the API and ABI of features added in C++14 is only stable |
| since that release. |
| </p><p> |
| This status table is based on the table of contents of ISO/IEC 14882:2014. |
| Some subclauses are not shown in the table where the content is unchanged |
| since C++11 and the implementation is complete. |
| </p><p> |
| This section describes the C++14 and library TS support in mainline GCC, |
| not in any particular release. |
| </p><div class="table"><a id="table.cxx14_status"></a><p class="title"><strong>Table 1.3. C++ 2014 Implementation Status</strong></p><div class="table-contents"><table class="table" summary="C++ 2014 Implementation Status" border="1"><colgroup><col align="left" class="c1" /><col align="left" class="c2" /><col align="left" class="c3" /><col align="left" class="c4" /></colgroup><thead><tr><th align="left">Section</th><th align="left">Description</th><th align="left">Status</th><th align="left">Comments</th></tr></thead><tbody><tr><td align="left"> |
| <span class="emphasis"><em>18</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Language support</em></span> |
| </td></tr><tr><td align="left">18.1</td><td align="left">General</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">18.2</td><td align="left">Types</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.3</td><td align="left">Implementation properties</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">18.3.2</td><td align="left">Numeric Limits</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">18.3.2.3</td><td align="left">Class template <code class="code">numeric_limits</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.3.2.4</td><td align="left"><code class="code">numeric_limits</code> members</td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">18.3.2.5</td><td align="left"><code class="code">float_round_style</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">18.3.2.6</td><td align="left"><code class="code">float_denorm_style</code></td><td align="left">N</td><td align="left"> </td></tr><tr><td align="left">18.3.2.7</td><td align="left"><code class="code">numeric_limits</code> specializations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.3.3</td><td align="left">C Library</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.4</td><td align="left">Integer types</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">18.4.1</td><td align="left">Header <code class="code"><cstdint></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">18.5</td><td align="left">Start and termination</td><td align="left">Partial</td><td align="left">C library dependency for quick_exit, at_quick_exit</td></tr><tr><td align="left">18.6</td><td align="left">Dynamic memory management</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.7</td><td align="left">Type identification</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">18.7.1</td><td align="left">Class type_info</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.7.2</td><td align="left">Class bad_cast</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.7.3</td><td align="left">Class bad_typeid</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.8</td><td align="left">Exception handling</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">18.8.1</td><td align="left">Class exception</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.8.2</td><td align="left">Class bad_exception</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.8.3</td><td align="left">Abnormal termination</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.8.4</td><td align="left"><code class="code">uncaught_exception</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.8.5</td><td align="left">Exception Propagation</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.8.6</td><td align="left"><code class="code">nested_exception</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.9</td><td align="left">Initializer lists</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">18.9.1</td><td align="left">Initializer list constructors</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.9.2</td><td align="left">Initializer list access</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.9.3</td><td align="left">Initializer list range access</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">18.10</td><td align="left">Other runtime support</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>19</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Diagnostics</em></span> |
| </td></tr><tr><td align="left">19.1</td><td align="left">General</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">19.2</td><td align="left">Exception classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">19.3</td><td align="left">Assertions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">19.4</td><td align="left">Error numbers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">19.5</td><td align="left">System error support</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">19.5.1</td><td align="left">Class <code class="code">error_category</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">19.5.2</td><td align="left">Class <code class="code">error_code</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">19.5.3</td><td align="left">Class <code class="code">error_condition</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">19.5.4</td><td align="left">Comparison operators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">19.5.5</td><td align="left">Class <code class="code">system_error</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>20</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>General utilities</em></span> |
| </td></tr><tr><td align="left">20.1</td><td align="left">General</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.2</td><td align="left">Utility components</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.2.1</td><td align="left">Operators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.2.2</td><td align="left">swap</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.2.3</td><td align="left">exchange</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.2.4</td><td align="left">forward/move helpers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.2.5</td><td align="left">Function template <code class="code">declval</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.3</td><td align="left">Pairs</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.4</td><td align="left">Tuples</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.5</td><td align="left">Compile-time integer sequences</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.5.2</td><td align="left">Class template <code class="code">integer_sequence</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.5.3</td><td align="left">Alias template <code class="code">make_integer_sequence</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.6</td><td align="left">Class template <code class="code">bitset</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.7</td><td align="left">Memory</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8</td><td align="left">Smart pointers</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.8.1</td><td align="left">Class template <code class="code">unique_ptr</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8.1.1</td><td align="left">Default deleters</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8.1.2</td><td align="left"><code class="code">unique_ptr</code> for single objects</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8.1.3</td><td align="left"><code class="code">unique_ptr</code> for array objects with a runtime length</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8.1.4</td><td align="left"><code class="code">unique_ptr</code> creation</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8.1.5</td><td align="left"><code class="code">unique_ptr</code> specialized algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8.2</td><td align="left">Shared-ownership pointers</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.8.2.1</td><td align="left">Class <code class="code">bad_weak_ptr</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8.2.2</td><td align="left">Class template <code class="code">shared_ptr</code></td><td align="left">Y</td><td align="left"> |
| Uses code from |
| <a class="link" href="http://www.boost.org/libs/smart_ptr/shared_ptr.htm" target="_top">boost::shared_ptr</a>. |
| </td></tr><tr><td align="left">20.8.2.3</td><td align="left">Class template <code class="code">weak_ptr</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8.2.4</td><td align="left">Class template <code class="code">owner_less</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8.2.5</td><td align="left">Class template <code class="code">enable_shared_from_this</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8.2.6</td><td align="left"><code class="code">shared_ptr</code> atomic access</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8.2.7</td><td align="left">Smart pointer hash support</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9</td><td align="left">Function objects</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.9.1</td><td align="left">Definitions</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.9.2</td><td align="left">Requirements</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.9.3</td><td align="left">Class template <code class="code">reference_wrapper</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.4</td><td align="left">Arithmetic operation</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.5</td><td align="left">Comparisons</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.8.6</td><td align="left">Logical operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.7</td><td align="left">Bitwise operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.8</td><td align="left">Negators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.9</td><td align="left">Function object binders</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.10</td><td align="left">Function template <code class="code">mem_fn</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.9.11</td><td align="left">Polymorphic function wrappers</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.9.11.1</td><td align="left">Class <code class="code">bad_function_call</code></td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">20.9.11.2</td><td align="left">Class template <code class="code">function</code></td><td align="left">Partial</td><td align="left">Missing allocator support</td></tr><tr><td align="left">20.9.12</td><td align="left">Class template <code class="code">hash</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.10</td><td align="left">Metaprogramming and type traits</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.10.1</td><td align="left">Requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.10.2</td><td align="left">Header <code class="code"><type_traits></code> synopsis</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.10.3</td><td align="left">Helper classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.10.4</td><td align="left">Unary Type Traits</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.10.5</td><td align="left">Type property queries</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.10.6</td><td align="left">Relationships between types</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.10.7</td><td align="left">Transformations between types</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.11</td><td align="left">Compile-time rational arithmetic</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.12</td><td align="left">Time utilities</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">20.12.3</td><td align="left">Clock requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.12.4</td><td align="left">Time-related traits</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.12.5</td><td align="left">Class template <code class="code">duration</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.12.5.8</td><td align="left">Suffixes for duration literals</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.12.6</td><td align="left">Class template <code class="code">time_point</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.12.7</td><td align="left">Clocks</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.12.8</td><td align="left">Date and time functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.13</td><td align="left">Scoped allocator adaptor</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">20.14</td><td align="left">Class <code class="code">type_index</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>21</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Strings</em></span> |
| </td></tr><tr><td align="left">21.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.2</td><td align="left">Character traits</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.3</td><td align="left">String classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.4</td><td align="left">Class template <code class="code">basic_string</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.5</td><td align="left">Numeric Conversions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.6</td><td align="left">Hash support</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.7</td><td align="left">Suffixes for <code class="code">basic_string</code> literals</td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">21.7</td><td align="left">Null-terminated sequence utilities</td><td align="left">Partial</td><td align="left">C library dependency. </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>22</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Localization</em></span> |
| </td></tr><tr><td align="left">22.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.2</td><td align="left">Header <code class="code"><locale></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.3</td><td align="left">Locales</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4</td><td align="left">Standard <code class="code">locale</code> categories</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.5</td><td align="left">Standard code conversion facets</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.6</td><td align="left">C Library Locales</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>23</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Containers</em></span> |
| </td></tr><tr><td align="left">23.1</td><td align="left">General</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.2</td><td align="left">Container requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.3</td><td align="left">Sequence containers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.4</td><td align="left">Associative containers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.5</td><td align="left">Unordered associative containers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.6</td><td align="left">Container adaptors</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>24</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Iterators</em></span> |
| </td></tr><tr><td align="left">24.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.2</td><td align="left">Iterator requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.3</td><td align="left">Header <code class="code"><iterator></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.4</td><td align="left">Iterator primitives</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.5</td><td align="left">Iterator adaptors</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.6</td><td align="left">Stream iterators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.7</td><td align="left">range access</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>25</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Algorithms</em></span> |
| </td></tr><tr><td align="left">25.1</td><td align="left">General</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">25.2</td><td align="left">Non-modifying sequence operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">25.3</td><td align="left">Mutating sequence operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">25.4</td><td align="left">Sorting and related operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">25.5</td><td align="left">C library algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>26</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Numerics</em></span> |
| </td></tr><tr><td align="left">26.1</td><td align="left">General</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.2</td><td align="left">Numeric type requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.3</td><td align="left">The floating-point environment</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.4</td><td align="left">Complex numbers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.4.10</td><td align="left">Suffixes for complex number literals</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5</td><td align="left">Random number generation</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.6</td><td align="left">Numeric arrays</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.7</td><td align="left">Generalized numeric operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.8</td><td align="left">C Library</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>27</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Input/output library</em></span> |
| </td></tr><tr><td align="left">27.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.2</td><td align="left">Iostreams requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.2.1</td><td align="left">Imbue Limitations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.2.2</td><td align="left">Positioning Type Limitations</td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">27.2.3</td><td align="left">Thread safety</td><td align="left">Partial</td><td align="left"> </td></tr><tr><td align="left">27.3</td><td align="left">Forward declarations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.4</td><td align="left">Standard iostream objects</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.5</td><td align="left">Iostreams base classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.6</td><td align="left">Stream buffers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.7</td><td align="left">Formatting and manipulators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.7.6</td><td align="left">Quoted manipulators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.8</td><td align="left">String-based streams</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.9</td><td align="left">File-based streams</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>28</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Regular expressions</em></span> |
| </td></tr><tr><td align="left">28.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.2</td><td align="left">Definitions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.3</td><td align="left">Requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.4</td><td align="left">Header <code class="code"><regex></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.5</td><td align="left">Namespace <code class="code">std::regex_constants</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.6</td><td align="left">Class <code class="code">regex_error</code></td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">28.7</td><td align="left">Class template <code class="code">regex_traits</code></td><td align="left">Partial</td><td align="left"><code class="code">transform_primary</code> is not correctly implemented</td></tr><tr><td align="left">28.8</td><td align="left">Class template <code class="code">basic_regex</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.9</td><td align="left">Class template <code class="code">sub_match</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.10</td><td align="left">Class template <code class="code">match_results</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.11</td><td align="left">Regular expression algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.12</td><td align="left">Regular expression Iterators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.13</td><td align="left">Modified ECMAScript regular expression grammar</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>29</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Atomic operations</em></span> |
| </td></tr><tr><td align="left">29.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.2</td><td align="left">Header <code class="code"><atomic></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.3</td><td align="left">Order and consistency</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.4</td><td align="left">Lock-free property</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.5</td><td align="left">Atomic types</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.6</td><td align="left">Operations on atomic types</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.7</td><td align="left">Flag Type and operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.8</td><td align="left">Fences</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>30</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Thread support</em></span> |
| </td></tr><tr><td align="left">30.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.2</td><td align="left">Requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.3</td><td align="left">Threads</td><td align="left"> </td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">30.3.1</td><td align="left">Class <code class="code">thread</code></td><td align="left">Partial</td><td align="left"><code class="code">thread::id</code> comparisons not well-defined</td></tr><tr><td align="left">30.3.2</td><td align="left">Namespace <code class="code">this_thread</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.4</td><td align="left">Mutual exclusion</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">30.4.1</td><td align="left">Mutex requirements</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">30.4.1.1</td><td align="left">In general</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">30.4.1.2</td><td align="left">Mutex types</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">30.4.1.2.1</td><td align="left">Class <code class="code">mutex</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.4.1.2.2</td><td align="left">Class <code class="code">recursive_mutex</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.4.1.3</td><td align="left">Timed mutex types</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">30.4.1.3.1</td><td align="left">Class <code class="code">timed_mutex</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.4.1.3.2</td><td align="left">Class <code class="code">recursive_timed_mutex</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.4.1.4</td><td align="left">Shared timed mutex types</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">30.4.1.4.1</td><td align="left">Class <code class="code">shared_timed_mutex</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.4.2</td><td align="left">Locks</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">30.4.2.1</td><td align="left">Class template <code class="code">lock_guard</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.4.2.2</td><td align="left">Class template <code class="code">unique_lock</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.4.2.3</td><td align="left">Class template <code class="code">shared_lock</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.4.3</td><td align="left">Generic locking algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.4.4</td><td align="left">Call once</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">30.4.4.1</td><td align="left">Struct <code class="code">once_flag</code></td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">30.4.4.2</td><td align="left">Function <code class="code">call_once</code></td><td align="left">Broken</td><td align="left">Exception support is broken on non-Linux targets. |
| See <a class="link" href="https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66146" target="_top">PR |
| 66146</a>. |
| </td></tr><tr><td align="left">30.5</td><td align="left">Condition variables</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.5.1</td><td align="left">Class <code class="code">condition_variable</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.5.2</td><td align="left">Class <code class="code">condition_variable_any</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.6</td><td align="left">Futures</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">30.6.1</td><td align="left">Overview</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">30.6.2</td><td align="left">Error handling</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.6.3</td><td align="left">Class <code class="code">future_error</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.6.4</td><td align="left">Shared state</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.6.5</td><td align="left">Class template <code class="code">promise</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.6.6</td><td align="left">Class template <code class="code">future</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.6.7</td><td align="left">Class template <code class="code">shared_future</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.6.8</td><td align="left">Function template <code class="code">async</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.6.9</td><td align="left">Class template <code class="code">packaged_task</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>Appendix D</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Compatibility features</em></span> |
| </td></tr><tr><td align="left">D.1</td><td align="left">Increment operator with <code class="code">bool</code> operand</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.2</td><td align="left"><code class="code">register</code> keyword</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.3</td><td align="left">Implicit declaration of copy functions</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.4</td><td align="left">Dynamic exception specifications</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">D.5</td><td align="left">C standard library headers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.6</td><td align="left">Old iostreams members</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.7</td><td align="left"><code class="code">char*</code> streams</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.8</td><td align="left">Function objects</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.9</td><td align="left">Binders</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.10</td><td align="left"><code class="code">auto_ptr</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.11</td><td align="left">Violating exception-specifications</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.12</td><td align="left">Random shuffle</td><td align="left">Y</td><td align="left"> </td></tr></tbody></table></div></div><br class="table-break" /><div class="table"><a id="table.ts_status"></a><p class="title"><strong>Table 1.4. C++ Technical Specifications Implementation Status</strong></p><div class="table-contents"><table class="table" summary="C++ Technical Specifications Implementation Status" border="1"><colgroup><col align="left" class="c1" /><col align="left" class="c2" /><col align="left" class="c3" /><col align="left" class="c4" /></colgroup><thead><tr><th align="left">Paper</th><th align="left">Title</th><th align="left">Status</th><th align="left">Comments</th></tr></thead><tbody><tr bgcolor="#C8B0B0"><td align="left"> |
| <a class="link" href="http://www.open-std.org/JTC1/sc22/WG21/docs/papers/2013/n3662.html" target="_top"> |
| N3662 |
| </a> |
| </td><td align="left">C++ Dynamic Arrays</td><td align="left">N</td><td align="left">Array Extensions TS</td></tr><tr><td align="left"> |
| <a class="link" href="http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3793.html" target="_top"> |
| N3793 |
| </a> |
| </td><td align="left">A proposal to add a utility class to represent optional objects</td><td align="left">Y</td><td align="left">Library Fundamentals TS</td></tr><tr><td align="left"> |
| <a class="link" href="http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3804.html" target="_top"> |
| N3804 |
| </a> |
| </td><td align="left">Any library proposal</td><td align="left">Y</td><td align="left">Library Fundamentals TS</td></tr><tr bgcolor="#C8B0B0"><td align="left"> |
| <a class="link" href="http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2014/n3866.html" target="_top"> |
| N3866 |
| </a> |
| </td><td align="left">Invocation type traits, but dropping function_call_operator.</td><td align="left">N</td><td align="left">Library Fundamentals TS</td></tr><tr><td align="left"> |
| <a class="link" href="" target="_top"> |
| N3905 |
| </a> |
| </td><td align="left">Faster string searching (Boyer-Moore et al.)</td><td align="left">Y</td><td align="left">Library Fundamentals TS</td></tr><tr><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3915.pdf" target="_top"> |
| N3915 |
| </a> |
| </td><td align="left">apply() call a function with arguments from a tuple</td><td align="left">Y</td><td align="left">Library Fundamentals TS</td></tr><tr bgcolor="#B0B0B0"><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3916.pdf" target="_top"> |
| N3916 |
| </a> |
| </td><td align="left">Polymorphic memory resources</td><td align="left">Partial (missing pool resource and buffer resource classes)</td><td align="left">Library Fundamentals TS</td></tr><tr><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3920.html" target="_top"> |
| N3920 |
| </a> |
| </td><td align="left">Extending shared_ptr to support arrays</td><td align="left">Y</td><td align="left">Library Fundamentals TS</td></tr><tr><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3921.html" target="_top"> |
| N3921 |
| </a> |
| </td><td align="left"><code class="code">string_view</code>: a non-owning reference to a string</td><td align="left">Y</td><td align="left">Library Fundamentals TS</td></tr><tr><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3925.pdf" target="_top"> |
| N3925 |
| </a> |
| </td><td align="left">A sample proposal</td><td align="left">Y</td><td align="left">Library Fundamentals TS</td></tr><tr><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3932.htm" target="_top"> |
| N3932 |
| </a> |
| </td><td align="left">Variable Templates For Type Traits</td><td align="left">Y</td><td align="left">Library Fundamentals TS</td></tr><tr><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4100.pdf" target="_top"> |
| N4100 |
| </a> |
| </td><td align="left">File System</td><td align="left">Y</td><td align="left"> |
| Link with |
| <a class="link" href="using_dynamic_or_shared.html#manual.intro.using.linkage.experimental" title="Experimental Library Extensions"> |
| <code class="option">-lstdc++fs</code></a> |
| </td></tr></tbody></table></div></div><br class="table-break" /><div class="section"><div class="titlepage"><div><div><h4 class="title"><a id="iso.2014.specific"></a>Implementation Specific Behavior</h4></div></div></div><div class="section"><div class="titlepage"><div><div><h5 class="title"><a id="iso.2014.filesystemts"></a>Filesystem TS</h5></div></div></div><p> |
| <span class="emphasis"><em>2.1 POSIX conformance [fs.conform.9945]</em></span> |
| The behavior of the filesystem library implementation will depend on |
| the target operating system. Some features will not be supported |
| on some targets. Symbolic links and file permissions |
| are not supported on Windows. |
| </p><p> |
| <span class="emphasis"><em>15.30 Rename [fs.op.rename]</em></span> |
| On Windows, <code class="code">experimental::filesystem::rename</code> |
| is implemented by calling <code class="code">MoveFileExW</code> and so |
| does not meet the requirements of POSIX <code class="code">rename</code> |
| when one or both of the paths resolves to an existing directory. |
| Specifically, it is possible to rename a directory so it replaces |
| a non-directory (POSIX requires an error in that case), |
| and it is not possible to rename a directory to replace another |
| directory (POSIX requires that to work if the directory being |
| replaced is empty). |
| </p></div></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="status.iso.2017"></a>C++ 2017</h3></div></div></div><p> |
| In this implementation the <code class="literal">-std=gnu++17</code> or |
| <code class="literal">-std=c++17</code> flag must be used to enable language |
| and library |
| features. See <a class="link" href="using.html#manual.intro.using.flags" title="Command Options">dialect</a> |
| options. The pre-defined symbol |
| <code class="constant">__cplusplus</code> is used to check for the |
| presence of the required flag. |
| GCC 9.1 was the first release with non-experimental C++17 support, |
| so the API and ABI of features added in C++17 is only stable |
| since that release. |
| </p><p> |
| This section describes the C++17 and library TS support in mainline GCC, |
| not in any particular release. |
| </p><p> |
| The following table lists new library features that are included in |
| the C++17 standard. The "Proposal" column provides a link to the |
| ISO C++ committee proposal that describes the feature, while the "Status" |
| column indicates the first version of GCC that contains an implementation of |
| this feature (if it has been implemented). |
| The "SD-6 Feature Test" column shows the corresponding macro or header from |
| <a class="link" href="https://isocpp.org/std/standing-documents/sd-6-sg10-feature-test-recommendations" target="_top">SD-6: |
| Feature-testing recommendations for C++</a>. |
| </p><div class="table"><a id="table.cxx17_features"></a><p class="title"><strong>Table 1.5. C++ 2017 Library Features</strong></p><div class="table-contents"><table class="table" summary="C++ 2017 Library Features" border="1"><colgroup><col align="left" class="c1" /><col align="left" class="c2" /><col align="left" class="c3" /><col align="left" class="c4" /></colgroup><thead><tr><th align="left">Library Feature</th><th align="left">Proposal</th><th align="left">Status</th><th align="left">SD-6 Feature Test</th></tr></thead><tbody><tr bgcolor="#C8B0B0"><td align="left"> |
| <code class="code">constexpr std::hardware_{constructive,destructive}_interference_size</code> |
| </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0154r1.html" target="_top"> |
| P0154R1 |
| </a> |
| </td><td align="center"> No </td><td align="left"> <code class="code">__cpp_lib_hardware_interference_size >= 201603</code> </td></tr><tr><td align="left"> Core Issue 1776: Replacement of class objects containing reference members</td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0137r1.html" target="_top"> |
| P0137R1 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"> <code class="code">__cpp_lib_launder >= 201606</code> </td></tr><tr><td align="left">Wording for <code class="code">std::uncaught_exceptions</code></td><td align="left"> |
| <a class="link" href="http://www.open-std.org/JTC1/sc22/WG21/docs/papers/2014/n4259.pdf" target="_top"> |
| N4259 |
| </a> |
| </td><td align="center">6.1</td><td align="left"><code class="code">__cpp_lib_uncaught_exceptions >= 201411</code></td></tr><tr><td align="left"> C++17 should refer to C11 instead of C99 </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0063r3.html" target="_top"> |
| P0063R3 |
| </a> |
| </td><td align="center"> 9.1 </td><td align="left"> </td></tr><tr><td align="left"> Variant: a type-safe union for C++17 </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0088r3.html" target="_top"> |
| P0088R3 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"> <code class="code">__has_include(<variant>)</code>, |
| <code class="code">__cpp_lib_variant >= 201603</code> |
| (since 7.3, see Note 1) |
| </td></tr><tr><td align="left"> Library Fundamentals V1 TS Components: <code class="code">optional</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0220r1.html" target="_top"> |
| P0220R1 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"> <code class="code">__has_include(<optional>)</code>, |
| <code class="code">__cpp_lib_optional >= 201603</code> |
| (since 7.3, see Note 1) |
| </td></tr><tr><td align="left"> Library Fundamentals V1 TS Components: <code class="code">any</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0220r1.html" target="_top"> |
| P0220R1 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"> <code class="code">__has_include(<any>)</code>, |
| <code class="code">__cpp_lib_any >= 201603</code> |
| (since 7.3, see Note 1) |
| </td></tr><tr><td align="left"> Library Fundamentals V1 TS Components: <code class="code">string_view</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0220r1.html" target="_top"> |
| P0220R1 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"> <code class="code">__has_include(<string_view>)</code>, |
| <code class="code">__cpp_lib_string_view >= 201603</code> |
| (since 7.3, see Note 1) |
| </td></tr><tr><td align="left"> Library Fundamentals V1 TS Components: <code class="code">memory_resource</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0220r1.html" target="_top"> |
| P0220R1 |
| </a> |
| </td><td align="center"> 9.1 </td><td align="left"> <code class="code">__has_include(<memory_resource>)</code>, |
| <code class="code">__cpp_lib_memory_resource >= 201603</code> |
| </td></tr><tr><td align="left"> Library Fundamentals V1 TS Components: <code class="code">apply</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0220r1.html" target="_top"> |
| P0220R1 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"> <code class="code">__cpp_lib_apply >= 201603</code> </td></tr><tr><td align="left"> Library Fundamentals V1 TS Components: <code class="code">shared_ptr<T[]></code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0220r1.html" target="_top"> |
| P0220R1 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"> <code class="code">__cpp_lib_shared_ptr_arrays >= 201603</code> </td></tr><tr><td align="left"> Library Fundamentals V1 TS Components: Searchers </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0220r1.html" target="_top"> |
| P0220R1 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"> <code class="code">__cpp_lib_boyer_moore_searcher >= 201603</code> </td></tr><tr><td align="left"> Library Fundamentals V1 TS Components: Sampling </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0220r1.html" target="_top"> |
| P0220R1 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"> <code class="code">__cpp_lib_sample >= 201603</code> </td></tr><tr><td align="left"> Constant View: A proposal for a <code class="code">std::as_const</code> helper function template </td><td align="left"> |
| <a class="link" href="" target="_top"> |
| P0007R1 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"><code class="code"> __cpp_lib_as_const >= 201510 </code></td></tr><tr><td align="left"> Improving pair and tuple </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4387" target="_top"> |
| N4387 |
| </a> |
| </td><td align="center"> 6.1 </td><td align="left"> N/A </td></tr><tr><td align="left"> <code class="code">make_from_tuple</code>: apply for construction </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0209r2.pdf" target="_top"> |
| P0209R2 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"><code class="code"> __cpp_lib_make_from_tuple >= 201606 </code></td></tr><tr bgcolor="#C8B0B0"><td align="left"> |
| Removing <code class="code">auto_ptr</code>, <code class="code">random_shuffle()</code>, |
| And Old <code class="code"><functional></code> Stuff |
| </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4190.htm" target="_top"> |
| N4190 |
| </a> |
| </td><td align="center">No (kept for backwards compatibility)</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left"> Deprecating Vestigial Library Parts in C++17 </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0174r2.html" target="_top"> |
| P0174R2 |
| </a> |
| </td><td align="center"> No (kept for backwards compatibility)</td><td align="left"> </td></tr><tr><td align="left"> Making <code class="code">std::owner_less</code> more flexible </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0074r0.html" target="_top"> |
| P0074R0 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"><code class="code"> __cpp_lib_transparent_operators >= 201510 </code></td></tr><tr><td align="left"> <code class="code">std::addressof</code> should be constexpr </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0304r0.html#2296" target="_top"> |
| LWG2296 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"><code class="code"> __cpp_lib_addressof_constexpr >= 201603 </code></td></tr><tr><td align="left"> Safe conversions in <code class="code">unique_ptr<T[]></code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4089.pdf" target="_top"> |
| N4089 |
| </a> |
| </td><td align="center"> 6 </td><td align="left"> </td></tr><tr><td align="left"> LWG 2228: Missing SFINAE rule in unique_ptr templated assignment </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4366.html" target="_top"> |
| N4366 |
| </a> |
| </td><td align="center"> 6 </td><td align="left"> </td></tr><tr><td align="left"> Re-enabling <code class="code">shared_from_this</code></td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0033r1.html" target="_top"> |
| P0033R1 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"><code class="code">__cpp_lib_enable_shared_from_this >= 201603</code></td></tr><tr><td align="left"> A proposal to add <code class="code">invoke</code> function template </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4169.html" target="_top"> |
| N4169 |
| </a> |
| </td><td align="center"> 6.1 </td><td align="left"><code class="code"> __cpp_lib_invoke >= 201411 </code></td></tr><tr><td align="left">TriviallyCopyable <code class="code">reference_wrapper</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4277.html" target="_top"> |
| N4277 |
| </a> |
| </td><td align="center"> 5.1 </td><td align="left"> </td></tr><tr><td align="left"> Adopt <code class="code">not_fn</code> from Library Fundamentals 2 for C++17 </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0005r4.html" target="_top"> |
| P0005R4 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"><code class="code">__cpp_lib_not_fn >= 201603</code></td></tr><tr><td align="left"> Fixes for <code class="code">not_fn</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0358r1.html" target="_top"> |
| P0358R1 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"> </td></tr><tr><td align="left"> Fixing a design mistake in the searchers interface in Library Fundamentals </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0253r1.pdf" target="_top"> |
| P0253R1 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"> </td></tr><tr><td align="left"> Extending memory management tools </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0040r3.html" target="_top"> |
| P0040R3 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"><code class="code">__cpp_lib_raw_memory_algorithms >= 201606L</code></td></tr><tr><td align="left"> <code class="code">shared_ptr::weak_type</code></td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0163r0.html" target="_top"> |
| P0163R0 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"><code class="code"> __cpp_lib_shared_ptr_weak_type >= 201606</code></td></tr><tr><td align="left">Transformation Trait Alias <code class="code">void_t</code></td><td align="left"> |
| <a class="link" href="http://www.open-std.org/JTC1/sc22/WG21/docs/papers/2014/n3911.pdf" target="_top"> |
| N3911 |
| </a> |
| </td><td align="center">6.1</td><td align="left"><code class="code"> __cpp_lib_void_t >= 201411</code></td></tr><tr><td align="left"> Wording for <code class="code">bool_constant</code>, revision 1 </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4389.html" target="_top"> |
| N4389 |
| </a> |
| </td><td align="center">6.1</td><td align="left"><code class="code"> __cpp_lib_bool_constant >= 201505</code></td></tr><tr><td align="left"> Adopt Type Traits Variable Templates from Library Fundamentals TS for C++17</td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0006r0.html" target="_top"> |
| P0006R0 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"><code class="code"> __cpp_lib_type_trait_variable_templates >= 201510 </code></td></tr><tr><td align="left"> Logical Operator Type Traits</td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0013r1.html" target="_top"> |
| P0013R1 |
| </a> |
| </td><td align="center"> 6.1 </td><td align="left"><code class="code"> __cpp_lib_logical_traits >= 201510 </code></td></tr><tr><td align="left"> Adding [nothrow-]swappable traits </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0185r1.html" target="_top"> |
| P0185R1 |
| </a> |
| </td><td align="center"> 7.1 (<code class="code">__is_swappable</code> available since 6.1)</td><td align="left"><code class="code"> __cpp_lib_is_swappable >= 201603 </code></td></tr><tr><td align="left"> <code class="code">is_callable</code>, the missing INVOKE related trait</td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0077r2.html" target="_top"> |
| P0077R2 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"><code class="code"> __cpp_lib_is_invocable >= 201703 </code></td></tr><tr><td align="left"> has_unique_object_representations </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0258r2.html" target="_top"> |
| P0258R2 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"><code class="code"> __cpp_lib_has_unique_object_representations >= 201606 </code></td></tr><tr><td align="left"> Polishing <code class="code"><chrono></code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0092r1.html" target="_top"> |
| P0092R1 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"><code class="code"> __cpp_lib_chrono >= 201510 </code></td></tr><tr><td align="left"> Adding more constexpr to <code class="code"><chrono></code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0505r0.html" target="_top"> |
| P0505R0 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"><code class="code"> __cpp_lib_chrono >= 201611 </code> |
| (since 7.3, see Note 2) |
| </td></tr><tr><td align="left"> Constexpr for <code class="code">std::char_traits</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0426r1.html" target="_top"> |
| P0426R1 |
| </a> |
| </td><td align="center"> 8.1 </td><td align="left"><code class="code"> __cpp_lib_constexpr_char_traits >= 201611 </code></td></tr><tr><td align="left"> Integrating <code class="code">std::string_view</code> and <code class="code">std::string</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0254r2.pdf" target="_top"> |
| P0254R2 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"><code class="code"> </code></td></tr><tr><td align="left"> Give 'std::string' a non-const '.data()' member function </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0272r1.html" target="_top"> |
| P0272R1 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"><code class="code"> </code></td></tr><tr><td align="left">Cleaning-up noexcept in the Library</td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4258.pdf" target="_top"> |
| N4258 |
| </a> |
| </td><td align="center">6.1</td><td align="left"><code class="code"> __cpp_lib_allocator_traits_is_always_equal >= 201411 </code></td></tr><tr><td align="left">Contiguous Iterators </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4284.html" target="_top"> |
| N4284 |
| </a> |
| </td><td align="center">N/A</td><td align="left"> </td></tr><tr><td align="left"> Minimal incomplete type support for standard containers </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4510.html" target="_top"> |
| N4510 |
| </a> |
| </td><td align="center"> 3.0 </td><td align="left"><code class="code"> __cpp_lib_incomplete_container_elements >= 201505 </code> |
| (since 6.2, see Note 2) |
| </td></tr><tr><td align="left"> Emplace return type </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0084r2.pdf" target="_top"> |
| P0084R2 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"> </td></tr><tr><td align="left">Improved insertion interface for unique-key maps</td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4279.html" target="_top"> |
| N4279 |
| </a> |
| </td><td align="center"> 6.1 </td><td align="left"><code class="code"> __cpp_lib_map_try_emplace >= 201411</code>, |
| <code class="code"> __cpp_lib_unordered_map_try_emplace >= 201411</code> |
| </td></tr><tr><td align="left"> Splicing Maps and Sets </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0083r3.pdf" target="_top"> |
| P0083R3 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"><code class="code"> __cpp_lib_node_extract >= 201606 </code></td></tr><tr><td align="left">Non-member <code class="code">size()</code> and more</td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4280.pdf" target="_top"> |
| N4280 |
| </a> |
| </td><td align="center"> 6.1 </td><td align="left"><code class="code"> __cpp_lib_nonmember_container_access >= 201411 </code></td></tr><tr><td align="left"> A Proposal to Add Constexpr Modifiers to <code class="code">reverse_iterator</code>, <code class="code">move_iterator</code>, <code class="code">array</code> and Range Access </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0031r0.html" target="_top"> |
| P0031R0 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"><code class="code"> __cpp_lib_array_constexpr >= 201603 </code></td></tr><tr bgcolor="#B0B0B0"><td align="left"> The Parallelism TS Should be Standardized </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0024r2.html" target="_top"> |
| P0024R2 |
| </a> |
| </td><td align="center"> 9.1 </td><td align="left"><code class="code"> __has_include(<execution>)</code>, |
| <code class="code"> __cpp_lib_execution >= 201603 </code>, |
| <code class="code"> __cpp_lib_parallel_algorithm >= 201603 </code> |
| (requires linking with <code class="code">-ltbb</code>, see Note 3) |
| </td></tr><tr><td align="left"> An algorithm to "clamp" a value between a pair of boundary values </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0025r0.html" target="_top"> |
| P0025R0 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"><code class="code"> __cpp_lib_clamp >= 201603 </code></td></tr><tr><td align="left"> Adopt Selected Library Fundamentals V2 Components for C++17 </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0295r0.pdf" target="_top"> |
| P0295R0 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"><code class="code"> __cpp_lib_gcd_lcm >= 201606 </code></td></tr><tr><td align="left"> Proposal to Introduce a 3-Argument Overload to <code class="code">std::hypot</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0030r1.pdf" target="_top"> |
| P0030R1 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"><code class="code"> __cpp_lib_hypot >= 201603 </code></td></tr><tr><td align="left"> Mathematical Special Functions for C++17 </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0226r1.pdf" target="_top"> |
| P0226R1 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"><code class="code"> __cpp_lib_math_special_functions >= 201603 </code> |
| (see Note 4) |
| </td></tr><tr><td align="left">Adopt the File System TS for C++17 </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0218r1.html" target="_top"> |
| P0218R1 |
| </a> |
| </td><td align="center"> 8.1 </td><td align="left"><code class="code"> __has_include(<filesystem>)</code>, |
| <code class="code"> __cpp_lib_filesystem >= 201603 </code> |
| (GCC 8.x requires linking with <code class="code">-lstdc++fs</code>) |
| </td></tr><tr><td align="left"> Relative Paths for Filesystem</td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0219r1.html" target="_top"> |
| P0219R1 |
| </a> |
| </td><td align="center"> 8.1 </td><td align="left"><code class="code"> __cpp_lib_filesystem >= 201606 </code></td></tr><tr><td align="left"> Adapting string_view by filesystem paths </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0392r0.pdf" target="_top"> |
| P0392R0 |
| </a> |
| </td><td align="center"> 8.1 </td><td align="left"><code class="code"> __cpp_lib_filesystem >= 201606 </code></td></tr><tr><td align="left"> Directory Entry Caching for Filesystem </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0317r1.html" target="_top"> |
| P0317R1 |
| </a> |
| </td><td align="center"> 8.1 </td><td align="left"><code class="code"> __cpp_lib_filesystem >= 201703 </code></td></tr><tr><td align="left"> constexpr <code class="code">atomic<T>::is_always_lock_free</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0152r1.html" target="_top"> |
| P0152R1 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"><code class="code"> __cpp_lib_atomic_is_always_lock_free >= 201603 </code></td></tr><tr><td align="left">A proposal to add <code class="code">shared_mutex</code> (untimed) (Revision 4)</td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4508.html" target="_top"> |
| N4508 |
| </a> |
| </td><td align="center"> 6.1 </td><td align="left"><code class="code"> __cpp_lib_shared_mutex >= 201505 </code></td></tr><tr><td align="left"> Variadic <code class="code">lock_guard</code> (Rev. 5) </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0156r2.html" target="_top"> |
| P0156R2 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"><code class="code"> __cpp_lib_scoped_lock >= 201703 </code></td></tr><tr><td align="left"> A byte type definition </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0298r3.pdf" target="_top"> |
| P0298R3 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"><code class="code"> __cpp_lib_byte >= 201603 </code> (since 7.3, see Note 2) |
| </td></tr><tr><td align="left"> Elementary string conversions </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0067r5.html" target="_top"> |
| P0067R5 |
| </a> |
| </td><td align="center"> 11.1 (integral types supported since 8.1) </td><td align="left"><code class="code"> __has_include(<charconv>)</code>, |
| <code class="code"> __cpp_lib_to_chars >= 201611 </code></td></tr><tr><td align="left"> Homogeneous interface for variant, any and optional </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0032r3.pdf" target="_top"> |
| P0032R3 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"> |
| <code class="code"> __cpp_lib_any >= 201606 </code>, |
| <code class="code"> __cpp_lib_optional >= 201606 </code>, |
| <code class="code"> __cpp_lib_variant >= 201606 </code> |
| </td></tr><tr><td align="left"> Making Optional Greater Equal Again </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0307r2.pdf" target="_top"> |
| P0307R2 |
| </a> |
| </td><td align="center"> 7.1 </td><td align="left"> <code class="code"> __cpp_lib_optional >= 201606 </code> </td></tr></tbody></table></div></div><br class="table-break" /><p> |
| Note 1: This feature is supported in GCC 7.1 and 7.2 but before GCC 7.3 the |
| <code class="code">__cpp_lib</code> macro is not defined, and compilation will fail if the |
| header is included without using <code class="option">-std</code> to enable C++17 support. |
| </p><p> |
| Note 2: This feature is supported in older releases but the |
| <code class="code">__cpp_lib</code> macro is not defined to the right value |
| (or not defined at all) until the version shown in parentheses. |
| </p><p> |
| Note 3: The Parallel Algorithms have an external dependency on Intel TBB 2018 |
| or later. If the <code class="filename"><execution></code> |
| header is included then <code class="code">-ltbb</code> must be used to link to TBB. |
| </p><p> |
| Note 4: The mathematical special functions are enabled in C++17 mode from |
| GCC 7.1 onwards. For GCC 6.x or for C++11/C++14 define |
| <code class="code">__STDCPP_WANT_MATH_SPEC_FUNCS__</code> to a non-zero value |
| and test for <code class="code">__STDCPP_MATH_SPEC_FUNCS__ >= 201003L</code>. |
| </p><p> |
| The following status table is based on the table of contents of |
| ISO/IEC 14882:2017. |
| Some subclauses are not shown in the table where the content is unchanged |
| since C++14 and the implementation is complete. |
| </p><div class="table"><a id="table.cxx17_status"></a><p class="title"><strong>Table 1.6. C++ 2017 Implementation Status</strong></p><div class="table-contents"><table class="table" summary="C++ 2017 Implementation Status" border="1"><colgroup><col align="left" class="c1" /><col align="left" class="c2" /><col align="left" class="c3" /><col align="left" class="c4" /></colgroup><thead><tr><th align="left">Section</th><th align="left">Description</th><th align="left">Status</th><th align="left">Comments</th></tr></thead><tbody><tr><td align="left"> |
| <span class="emphasis"><em>21</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Language support</em></span> |
| </td></tr><tr><td align="left">21.1</td><td align="left">General</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">21.2</td><td align="left">Common definitions</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">21.3</td><td align="left">Implementation properties</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">21.3.1</td><td align="left">General</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">21.3.2</td><td align="left">Header <code class="code"><limits></code> synopsis</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">21.3.3</td><td align="left">Floating-point type properties</td><td align="left"> </td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">21.3.3.1</td><td align="left"><code class="code">float_round_style</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">21.3.3.2</td><td align="left"><code class="code">float_denorm_style</code></td><td align="left">N</td><td align="left"> </td></tr><tr><td align="left">21.3.4</td><td align="left">Class template <code class="code">numeric_limits</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.3.5</td><td align="left">Header <code class="code"><climits></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.3.6</td><td align="left">Header <code class="code"><cfloat></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.4</td><td align="left">Integer types</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">21.4.1</td><td align="left">Header <code class="code"><cstdint></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">21.5</td><td align="left">Start and termination</td><td align="left">Partial</td><td align="left">C library dependency for quick_exit, at_quick_exit</td></tr><tr><td align="left">21.6</td><td align="left">Dynamic memory management</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">21.6.1</td><td align="left">Header <code class="code"><new></code> synopsis</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">21.6.2</td><td align="left">Storage allocation and deallocation</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.6.3</td><td align="left">Storage allocation errors</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.6.4</td><td align="left">Pointer optimization barrier</td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">21.6.5</td><td align="left">Hardware interference size</td><td align="left">N</td><td align="left"> </td></tr><tr><td align="left">21.7</td><td align="left">Type identification</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.8</td><td align="left">Exception handling</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">21.8.1</td><td align="left">Header <code class="code"><exception></code> synopsis</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">21.8.2</td><td align="left">Class exception</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.8.3</td><td align="left">Class bad_exception</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.8.4</td><td align="left">Abnormal termination</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.8.5</td><td align="left"><code class="code">uncaught_exceptions</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.8.6</td><td align="left">Exception Propagation</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.8.7</td><td align="left"><code class="code">nested_exception</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.9</td><td align="left">Initializer lists</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">21.10</td><td align="left">Other runtime support</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>22</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Diagnostics</em></span> |
| </td></tr><tr><td align="left">22.1</td><td align="left">General</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">22.2</td><td align="left">Exception classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.3</td><td align="left">Assertions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.4</td><td align="left">Error numbers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">22.5</td><td align="left">System error support</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>23</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>General utilities</em></span> |
| </td></tr><tr><td align="left">23.1</td><td align="left">General</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.2</td><td align="left">Utility components</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.2.1</td><td align="left">Header <code class="code"><utility></code> synopsis</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.2.2</td><td align="left">Operators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.2.3</td><td align="left"><code class="code">swap</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.2.4</td><td align="left"><code class="code">exchange</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.2.5</td><td align="left">Forward/move helpers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.2.6</td><td align="left">Function template <code class="code">as_const</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.2.7</td><td align="left">Function template <code class="code">declval</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.2.8</td><td align="left">Primitive numeric output conversion</td><td align="left">Partial</td><td align="left"> </td></tr><tr><td align="left">23.2.9</td><td align="left">Primitive numeric input conversion</td><td align="left">Partial</td><td align="left"> </td></tr><tr><td align="left">23.3</td><td align="left">Compile-time integer sequences</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.4</td><td align="left">Pairs</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.5</td><td align="left">Tuples</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.6</td><td align="left">Optional objects</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.7</td><td align="left">Variants</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.8</td><td align="left">Storage for any type</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.9</td><td align="left">Bitsets</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.10</td><td align="left">Memory</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.10.1</td><td align="left">In general</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.10.2</td><td align="left">Header <code class="code"><memory></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.10.3</td><td align="left">Pointer traits</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.10.4</td><td align="left">Pointer safety</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.10.5</td><td align="left">Align</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.10.6</td><td align="left">Allocator argument tag</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.10.7</td><td align="left"><code class="code">uses_allocator</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.10.8</td><td align="left">Allocator traits</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.10.9</td><td align="left">The default allocator</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.10.10</td><td align="left">Specialized algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.10.11</td><td align="left">C library memory allocation</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.11</td><td align="left">Smart pointers</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.11.1</td><td align="left">Class template <code class="code">unique_ptr</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.11.2</td><td align="left">Shared-ownership pointers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.12</td><td align="left">Memory resources</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.12.1</td><td align="left">Header <code class="code"><memory_resource></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.12.2</td><td align="left">Class <code class="code">memory_resource</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.12.3</td><td align="left">Class template <code class="code">polymorphic_allocator</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.12.4</td><td align="left">Access to program-wide <code class="code">memory_resource</code> objects</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.12.5</td><td align="left">Pool resource classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.12.6</td><td align="left">Class <code class="code">monotonic_buffer_resource</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.13</td><td align="left">Class template <code class="code">scoped_allocator_adaptor</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.14</td><td align="left">Function objects</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.14.1</td><td align="left">Header <code class="code"><functional></code> synopsis</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.14.2</td><td align="left">Definitions</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.14.3</td><td align="left">Requirements</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.14.4</td><td align="left">Function template <code class="code">invoke</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.14.5</td><td align="left">Class template <code class="code">reference_wrapper</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.14.6</td><td align="left">Arithmetic operation</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.14.7</td><td align="left">Comparisons</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.14.8</td><td align="left">Logical operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.14.9</td><td align="left">Bitwise operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.14.10</td><td align="left">Function template <code class="code">not_fn</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.14.11</td><td align="left">Function object binders</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.14.12</td><td align="left">Function template <code class="code">mem_fn</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.14.13</td><td align="left">Polymorphic function wrappers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.14.14</td><td align="left">Searchers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.14.15</td><td align="left">Class template <code class="code">hash</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.15</td><td align="left">Metaprogramming and type traits</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.15.1</td><td align="left">Requirements</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.15.2</td><td align="left">Header <code class="code"><type_traits></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.15.3</td><td align="left">Helper classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.15.4</td><td align="left">Unary Type Traits</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.15.5</td><td align="left">Type property queries</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.15.6</td><td align="left">Relationships between types</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.15.7</td><td align="left">Transformations between types</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.15.8</td><td align="left">Logical operator traits</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.16</td><td align="left">Compile-time rational arithmetic</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.17.1</td><td align="left">In general</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.17.2</td><td align="left">Header <code class="code"><chrono></code> synopsis</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.17</td><td align="left">Time utilities</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.17.3</td><td align="left">Clock requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.17.4</td><td align="left">Time-related traits</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.17.5</td><td align="left">Class template <code class="code">duration</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.17.6</td><td align="left">Class template <code class="code">time_point</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.17.7</td><td align="left">Clocks</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.17.8</td><td align="left">Header <code class="code"><ctime></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.18</td><td align="left">Class <code class="code">type_index</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.19</td><td align="left">Execution policies</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.19.1</td><td align="left">In general</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.19.2</td><td align="left">Header <code class="code"><execution></code> synopsis</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">23.19.3</td><td align="left">Execution policy type trait</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.19.4</td><td align="left">Sequenced execution policy</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.19.5</td><td align="left">Parallel execution policy</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.19.6</td><td align="left">Parallel and unsequenced execution policy</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">23.19.7</td><td align="left">Execution policy objects</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>24</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Strings</em></span> |
| </td></tr><tr><td align="left">24.1</td><td align="left">General</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">24.2</td><td align="left">Character traits</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.3</td><td align="left">String classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.4</td><td align="left">String view classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.4.1</td><td align="left">Header <code class="code"><string_view></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.4.2</td><td align="left">Class template <code class="code">basic_string_view</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.4.3</td><td align="left">Non-member comparison functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.4.4</td><td align="left">Inserters and extractors</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.4.5</td><td align="left">Hash support</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">24.4.6</td><td align="left">Suffix for <code class="code">basic_string_view</code> literals</td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">24.5</td><td align="left">Null-terminated sequence utilities</td><td align="left">Partial</td><td align="left">C library dependency. </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>25</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Localization</em></span> |
| </td></tr><tr><td align="left">25.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">25.2</td><td align="left">Header <code class="code"><locale></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">25.3</td><td align="left">Locales</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">25.4</td><td align="left">Standard <code class="code">locale</code> categories</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">25.5</td><td align="left">C Library Locales</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>26</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Containers</em></span> |
| </td></tr><tr><td align="left">26.1</td><td align="left">General</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">26.2</td><td align="left">Container requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.3</td><td align="left">Sequence containers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.4</td><td align="left">Associative containers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.5</td><td align="left">Unordered associative containers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">26.6</td><td align="left">Container adaptors</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>27</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Iterators</em></span> |
| </td></tr><tr><td align="left">27.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.2</td><td align="left">Iterator requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.3</td><td align="left">Header <code class="code"><iterator></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.4</td><td align="left">Iterator primitives</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.5</td><td align="left">Iterator adaptors</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.6</td><td align="left">Stream iterators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.7</td><td align="left">Range access</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">27.8</td><td align="left">Container access</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>28</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Algorithms</em></span> |
| </td></tr><tr><td align="left">28.1</td><td align="left">General</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">28.2</td><td align="left">Header <code class="code"><algorithm></code> synopsis</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">28.3</td><td align="left">Algorithms requirements</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">28.4</td><td align="left">Parallel algorithms</td><td align="left"> </td><td align="left">Using <a class="link" href="https://github.com/llvm/llvm-project/tree/main/pstl" target="_top">PSTL</a></td></tr><tr><td align="left">28.5</td><td align="left">Non-modifying sequence operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.6</td><td align="left">Mutating sequence operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.7</td><td align="left">Sorting and related operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">28.8</td><td align="left">C library algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>29</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Numerics</em></span> |
| </td></tr><tr><td align="left">29.1</td><td align="left">General</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">29.2</td><td align="left">Definitions</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">29.3</td><td align="left">Numeric type requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.4</td><td align="left">The floating-point environment</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.5</td><td align="left">Complex numbers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.6</td><td align="left">Random number generation</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.7</td><td align="left">Numeric arrays</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.8</td><td align="left">Generalized numeric operations</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">29.8.1</td><td align="left">Header <code class="code"><numeric></code> synopsis</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">29.8.2</td><td align="left">Accumulate</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.8.3</td><td align="left">Reduce</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.8.4</td><td align="left">Inner product</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.8.5</td><td align="left">Transform reduce</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.8.6</td><td align="left">Partial sum</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.8.7</td><td align="left">Exclusive scan</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.8.8</td><td align="left">Inclusive scan</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.8.9</td><td align="left">Transform exclusive scan</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.8.10</td><td align="left">Transform inclusive scan</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.8.11</td><td align="left">Adjacent difference</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.8.12</td><td align="left">Iota</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.8.13</td><td align="left">Greatest common divisor</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.8.14</td><td align="left">Least common multiple</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.9</td><td align="left">Mathematical functions for floating-point types</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">29.9.1</td><td align="left">Header <code class="code"><cmath></code> synopsis</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">29.9.2</td><td align="left">Absolute values</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.9.3</td><td align="left">Three-dimensional hypotenuse</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.9.4</td><td align="left">Classification / comparison functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">29.9.5</td><td align="left">Mathematical special functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>30</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Input/output library</em></span> |
| </td></tr><tr><td align="left">30.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.2</td><td align="left">Iostreams requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.2.1</td><td align="left">Imbue Limitations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.2.2</td><td align="left">Positioning Type Limitations</td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">30.2.3</td><td align="left">Thread safety</td><td align="left">Partial</td><td align="left"> </td></tr><tr><td align="left">30.3</td><td align="left">Forward declarations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.4</td><td align="left">Standard iostream objects</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.5</td><td align="left">Iostreams base classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.6</td><td align="left">Stream buffers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.7</td><td align="left">Formatting and manipulators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.8</td><td align="left">String-based streams</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.9</td><td align="left">File-based streams</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.10</td><td align="left">File systemss</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">30.11</td><td align="left">C library files</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>31</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Regular expressions</em></span> |
| </td></tr><tr><td align="left">31.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">31.2</td><td align="left">Definitions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">31.3</td><td align="left">Requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">31.4</td><td align="left">Header <code class="code"><regex></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">31.5</td><td align="left">Namespace <code class="code">std::regex_constants</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">31.6</td><td align="left">Class <code class="code">regex_error</code></td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">31.7</td><td align="left">Class template <code class="code">regex_traits</code></td><td align="left">Partial</td><td align="left"><code class="code">transform_primary</code> is not correctly implemented</td></tr><tr><td align="left">31.8</td><td align="left">Class template <code class="code">basic_regex</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">31.9</td><td align="left">Class template <code class="code">sub_match</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">31.10</td><td align="left">Class template <code class="code">match_results</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">31.11</td><td align="left">Regular expression algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">31.12</td><td align="left">Regular expression Iterators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">31.13</td><td align="left">Modified ECMAScript regular expression grammar</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>32</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Atomic operations</em></span> |
| </td></tr><tr><td align="left">32.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">32.2</td><td align="left">Header <code class="code"><atomic></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">32.3</td><td align="left">Type aliases</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">32.4</td><td align="left">Order and consistency</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">32.5</td><td align="left">Lock-free property</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">32.6</td><td align="left">Class template <code class="code"><atomic></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">32.7</td><td align="left">Non-member functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">32.8</td><td align="left">Flag Type and operations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">32.9</td><td align="left">Fences</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>33</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Thread support</em></span> |
| </td></tr><tr><td align="left">33.1</td><td align="left">General</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">33.2</td><td align="left">Requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">33.3</td><td align="left">Threads</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">33.3.1</td><td align="left">Header <code class="code">thread</code> synopsis</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">33.3.2</td><td align="left">Class <code class="code">thread</code></td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">33.3.2.1</td><td align="left">Class <code class="code">thread</code></td><td align="left">Partial</td><td align="left"><code class="code">thread::id</code> comparisons not well-defined</td></tr><tr><td align="left">33.3.3</td><td align="left">Namespace <code class="code">this_thread</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">33.4</td><td align="left">Mutual exclusion</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">33.4.3</td><td align="left">Mutex requirements</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">33.4.3.1</td><td align="left">In general</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">33.4.3.2</td><td align="left">Mutex types</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">33.4.3.2.1</td><td align="left">Class <code class="code">mutex</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">33.4.3.2.2</td><td align="left">Class <code class="code">recursive_mutex</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">33.4.3.3</td><td align="left">Timed mutex types</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">33.4.3.3.1</td><td align="left">Class <code class="code">timed_mutex</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">33.4.3.3.2</td><td align="left">Class <code class="code">recursive_timed_mutex</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">33.4.3.4</td><td align="left">Shared mutex types</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">33.4.3.4.1</td><td align="left">Class <code class="code">shared_mutex</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">33.4.3.5</td><td align="left">Shared timed mutex types</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">33.4.3.5.1</td><td align="left">Class <code class="code">shared_timed_mutex</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">33.4.4</td><td align="left">Locks</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">33.4.4.1</td><td align="left">Class template <code class="code">lock_guard</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">33.4.4.2</td><td align="left">Class template <code class="code">scoped_guard</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">33.4.4.3</td><td align="left">Class template <code class="code">unique_lock</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">33.4.4.4</td><td align="left">Class template <code class="code">shared_lock</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">33.4.5</td><td align="left">Generic locking algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">33.4.6</td><td align="left">Call once</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">33.4.6.1</td><td align="left">Struct <code class="code">once_flag</code></td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">33.4.6.2</td><td align="left">Function <code class="code">call_once</code></td><td align="left">Y</td><td align="left">Exception support is broken on non-Linux targets. |
| See <a class="link" href="https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66146" target="_top">PR |
| 66146</a>. |
| </td></tr><tr><td align="left">33.5</td><td align="left">Condition variables</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">33.5.1</td><td align="left">Class <code class="code">condition_variable</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">33.5.2</td><td align="left">Class <code class="code">condition_variable_any</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">33.6</td><td align="left">Futures</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">33.6.1</td><td align="left">Overview</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">33.6.2</td><td align="left">Header <code class="code"><future></code></td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">33.6.3</td><td align="left">Error handling</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">33.6.4</td><td align="left">Class <code class="code">future_error</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">33.6.5</td><td align="left">Shared state</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">33.6.6</td><td align="left">Class template <code class="code">promise</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">33.6.7</td><td align="left">Class template <code class="code">future</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">33.6.8</td><td align="left">Class template <code class="code">shared_future</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">33.6.9</td><td align="left">Function template <code class="code">async</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">33.6.10</td><td align="left">Class template <code class="code">packaged_task</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>Appendix D</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Compatibility features</em></span> |
| </td></tr><tr><td align="left">D.4</td><td align="left">C++ standard library headers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.4.1</td><td align="left">Header <code class="code"><ccomplex></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.4.1</td><td align="left">Header <code class="code"><cstdalign></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.4.1</td><td align="left">Header <code class="code"><cstdbool></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.4.1</td><td align="left">Header <code class="code"><ctgmath></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.5</td><td align="left">C standard library headers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.6</td><td align="left"><code class="code">char*</code> streams</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.7</td><td align="left"><code class="code">uncaught_exception</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.8</td><td align="left">Old adaptable function bindings</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.9</td><td align="left">The default allocator</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.10</td><td align="left">Raw storage iterator</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.11</td><td align="left">Temporary buffers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.12</td><td align="left">Deprecated type traits</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.13</td><td align="left">Deprecated iterator primitives</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.14</td><td align="left">Deprecated <code class="code">shared_ptr</code> observers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.15</td><td align="left">Deprecated standard code conversion facets</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">D.16</td><td align="left">Deprecated convenience conversion interfaces</td><td align="left">Y</td><td align="left"> </td></tr></tbody></table></div></div><br class="table-break" /><div class="table"><a id="table.cxx17_ts_status"></a><p class="title"><strong>Table 1.7. C++ Technical Specifications Implementation Status</strong></p><div class="table-contents"><table class="table" summary="C++ Technical Specifications Implementation Status" border="1"><colgroup><col align="left" class="c1" /><col align="left" class="c2" /><col align="left" class="c3" /><col align="left" class="c4" /></colgroup><thead><tr><th align="left">Paper</th><th align="left">Title</th><th align="left">Status</th><th align="left">Comments</th></tr></thead><tbody><tr><td align="left"> |
| <a class="link" href="http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2014/n4076.html" target="_top"> |
| N4076 |
| </a> |
| </td><td align="left">A generalized callable negator</td><td align="left">Y</td><td align="left">Library Fundamentals 2 TS</td></tr><tr><td align="left"> |
| <a class="link" href="http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2014/n4273.htm" target="_top"> |
| N4273 |
| </a> |
| </td><td align="left">Uniform Container Erasure</td><td align="left">Y</td><td align="left">Library Fundamentals 2 TS</td></tr><tr><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4061.pdf" target="_top"> |
| N4061 |
| </a> |
| </td><td align="left">Greatest Common Divisor and Least Common Multiple</td><td align="left">Y</td><td align="left">Library Fundamentals 2 TS</td></tr><tr><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4066.htm" target="_top"> |
| N4066 |
| </a> |
| </td><td align="left">Delimited iterators</td><td align="left">Y</td><td align="left">Library Fundamentals 2 TS</td></tr><tr><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4282.pdf" target="_top"> |
| N4282 |
| </a> |
| </td><td align="left">The World's Dumbest Smart Pointer</td><td align="left">Y</td><td align="left">Library Fundamentals 2 TS</td></tr><tr><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4388.html" target="_top"> |
| N4388 |
| </a> |
| </td><td align="left">Const-Propagating Wrapper</td><td align="left">Y</td><td align="left">Library Fundamentals 2 TS</td></tr><tr><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4391.html" target="_top"> |
| N4391 |
| </a> |
| </td><td align="left"> <code class="code">make_array</code>, revision 4 </td><td align="left">Y</td><td align="left">Library Fundamentals 2 TS</td></tr><tr><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4502.pdf" target="_top"> |
| N4502 |
| </a> |
| </td><td align="left"> Support for the C++ Detection Idiom, V2 </td><td align="left">Y</td><td align="left">Library Fundamentals 2 TS</td></tr><tr><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4519.pdf" target="_top"> |
| N4519 |
| </a> |
| </td><td align="left"> Source-Code Information Capture </td><td align="left">Y</td><td align="left">Library Fundamentals 2 TS</td></tr><tr bgcolor="#C8B0B0"><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4521.html" target="_top"> |
| N4521 |
| </a> |
| </td><td align="left"> Merge Fundamentals V1 into V2 </td><td align="left"> |
| N (components from V1 are still in namespace |
| <code class="code">fundamentals_v1</code>) |
| </td><td align="left">Library Fundamentals 2 TS</td></tr><tr><td align="left"> |
| <a class="link" href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2015/p0013r1.html" target="_top"> |
| P0013R1 |
| </a> |
| </td><td align="left">Logical Operator Type Traits (revision 1)</td><td align="left">Y</td><td align="left">Library Fundamentals 2 TS</td></tr><tr><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4531.html" target="_top"> |
| N4531 |
| </a> |
| </td><td align="left">std::rand replacement, revision 3</td><td align="left">Y</td><td align="left">Library Fundamentals 2 TS</td></tr><tr><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0214r9.pdf" target="_top"> |
| P0214R9 |
| </a> |
| </td><td align="left">Data-Parallel Types</td><td align="left">Y</td><td align="left">Parallelism 2 TS</td></tr></tbody></table></div></div><br class="table-break" /><div class="section"><div class="titlepage"><div><div><h4 class="title"><a id="iso.2017.specific"></a>Implementation Specific Behavior</h4></div></div></div><p>For behaviour which is also specified by previous standards, |
| see <a class="link" href="status.html#iso.1998.specific" title="Implementation Specific Behavior">C++ 1998/2003 Implementation |
| Specific Behavior</a> and <a class="link" href="status.html#iso.2011.specific" title="Implementation Specific Behavior">C++ |
| 2011 Implementation Specific Behavior</a>. This section only |
| documents behaviour which is new in the 2017 standard. |
| </p><p> |
| <span class="emphasis"><em>20.5.1.2 [headers]</em></span> |
| Whether names from Annex K are declared by C++ headers depends on |
| whether the underlying C library supports Annex K and declares the |
| names. For the GNU C library, there is no Annex K support and so |
| none of its names are declared by C++ headers. |
| </p><p> |
| <span class="emphasis"><em>23.6.5 [optional.bad_optional_access]</em></span> |
| <code class="code">what()</code> returns <code class="literal">"bad optional access"</code>. |
| </p><p> |
| <span class="emphasis"><em>23.7.3 [variant.variant]</em></span> |
| <code class="classname">variant</code> supports over-aligned types. |
| </p><p> |
| <span class="emphasis"><em>23.7.10 [variant.bad.access]</em></span> |
| <code class="code">what()</code> returns one of the strings |
| <code class="literal">"std::get: variant is valueless"</code>, |
| <code class="literal">"std::get: wrong index for variant"</code>, |
| <code class="literal">"std::visit: variant is valueless"</code>, |
| or <code class="literal">"std::visit<R>: variant is valueless"</code>. |
| </p><p> |
| <span class="emphasis"><em>23.12.5.2 [memory.resource.pool.options]</em></span> |
| Let S equal <code class="code">numeric_limits<size_t>::digits</code>. |
| The limit for maximum number of blocks in a chunk is given by |
| <span class="mathphrase">2<sup>N</sup>-1</span>, |
| where N is <span class="mathphrase">min(19, 3 + S/2)</span>. |
| The largest allocation size that will be allocated from a pool is |
| <span class="mathphrase">2<sup>22</sup></span> |
| when <span class="mathphrase">S > 20</span>, |
| otherwise 3072 when <span class="mathphrase">S > 16</span>, |
| otherwise 768. |
| </p><p> |
| <span class="emphasis"><em>23.12.6.1 [memory.resource.monotonic.buffer.ctor]</em></span> |
| The default <code class="code">next_buffer_size</code> is <code class="code">128 * sizeof(void*)</code>. |
| The default growth factor is <code class="code">1.5</code>. |
| </p><p> |
| <span class="emphasis"><em>23.15.4.3 [meta.unary.prop]</em></span> |
| The predicate condition for |
| <code class="code">has_unique_object_representations</code> is true for all scalar |
| types except floating point types. |
| </p><p> |
| <span class="emphasis"><em>23.19.3 [execpol.type], |
| 28.4.3 [algorithms.parallel.exec]</em></span> |
| There are no implementation-defined execution policies. |
| </p><p> |
| <span class="emphasis"><em>24.4.2 [string.view.template]</em></span> |
| <code class="classname">basic_string_view<C, T>::iterator</code> is |
| <code class="code">C*</code> and |
| <code class="classname">basic_string_view<C, T>::const_iterator</code> is |
| <code class="code">const C*</code>. |
| </p><p> |
| <span class="emphasis"><em>28.4.3 [algorithms.parallel.exec]</em></span> |
| Threads of execution created by <code class="classname">std::thread</code> |
| provide concurrent forward progress guarantees, so threads of execution |
| implicitly created by the library will provide parallel forward |
| progress guarantees. |
| </p><p> |
| <span class="emphasis"><em>29.4.1 [cfenv.syn]</em></span> |
| The effects of the <code class="filename"><cfenv></code> functions |
| depends on whether the <code class="code">FENV_ACCESS</code> pragma is supported, |
| and on the C library that provides the header. |
| </p><p> |
| <span class="emphasis"><em>29.6.9 [c.math.rand]</em></span> |
| Whether the <code class="function">rand</code> function may introduce data |
| races depends on the target C library that provides the function. |
| </p><p> |
| <span class="emphasis"><em>29.9.5 [sf.cmath]</em></span> |
| The effect of calling the mathematical special functions with large |
| inputs should be documented here. |
| </p><p> |
| <span class="emphasis"><em>30.10.2.1 [fs.conform.9945]</em></span> |
| The behavior of the filesystem library implementation will depend on |
| the target operating system. Some features will not be supported |
| on some targets. Symbolic links and file permissions |
| are not supported on Windows. |
| </p><p> |
| <span class="emphasis"><em>30.10.5 [fs.filesystem.syn]</em></span> |
| The clock used for file times is an unspecified type |
| with a signed 64-bit representation, capable of representing |
| timestamps with nanosecond resolution. The clock's epoch is |
| unspecified, but is not the same as the system clock's epoch. |
| </p><p> |
| <span class="emphasis"><em>30.10.7.1 [fs.path.generic]</em></span> |
| dot-dot in the root-directory refers to the root-directory itself. |
| On Windows, a drive specifier such as <code class="code">"C:"</code> or |
| <code class="code">"z:"</code> is treated as a root-name. On Cygwin, a path |
| that begins with two successive directory separators is a |
| root-name. Otherwise (for POSIX-like systems other than Cygwin), |
| the implementation-defined root-name is an unspecified string |
| which does not appear in any pathnames. |
| </p><p> |
| <span class="emphasis"><em>30.10.10.1 [fs.enum.path.format]</em></span> |
| The character sequence is always interpreted in the native pathname |
| format. |
| </p><p> |
| <span class="emphasis"><em>30.10.15.4 [fs.op.file_size]</em></span> |
| If <code class="code">!is_regular_file(p)</code>, an error is reported. |
| </p><p> |
| <span class="emphasis"><em>30.10.15.32 [fs.op.rename]</em></span> |
| On Windows, <code class="code">filesystem::rename</code> |
| is implemented by calling <code class="code">MoveFileExW</code> and so |
| does not meet the requirements of POSIX <code class="code">rename</code> |
| when one or both of the paths resolves to an existing directory. |
| Specifically, it is not possible to rename a directory to replace another |
| directory (POSIX requires that to work if the directory being |
| replaced is empty). |
| </p><div class="section"><div class="titlepage"><div><div><h5 class="title"><a id="iso.2017.par2ts"></a>Parallelism 2 TS</h5></div></div></div><p> |
| <span class="emphasis"><em>9.3 [parallel.simd.abi]</em></span> |
| <code class="code">max_fixed_size<T></code> is 32, except when targetting |
| AVX512BW and <code class="code">sizeof(T)</code> is 1. |
| </p><p> |
| When targeting 32-bit x86, |
| <code class="classname">simd_abi::compatible<T></code> is an alias for |
| <code class="classname">simd_abi::scalar</code>. |
| When targeting 64-bit x86 (including x32) or Aarch64, |
| <code class="classname">simd_abi::compatible<T></code> is an alias for |
| <code class="classname">simd_abi::_VecBuiltin<16></code>, |
| unless <code class="code">T</code> is <code class="code">long double</code>, in which case it is |
| an alias for <code class="classname">simd_abi::scalar</code>. |
| When targeting ARM (but not Aarch64) with NEON support, |
| <code class="classname">simd_abi::compatible<T></code> is an alias for |
| <code class="classname">simd_abi::_VecBuiltin<16></code>, |
| unless <code class="code">sizeof(T) > 4</code>, in which case it is |
| an alias for <code class="classname">simd_abi::scalar</code>. Additionally, |
| <code class="classname">simd_abi::compatible<float></code> is an alias for |
| <code class="classname">simd_abi::scalar</code> unless compiling with |
| -ffast-math. |
| </p><p> |
| When targeting x86 (both 32-bit and 64-bit), |
| <code class="classname">simd_abi::native<T></code> is an alias for one of |
| <code class="classname">simd_abi::scalar</code>, |
| <code class="classname">simd_abi::_VecBuiltin<16></code>, |
| <code class="classname">simd_abi::_VecBuiltin<32></code>, or |
| <code class="classname">simd_abi::_VecBltnBtmsk<64></code>, depending on |
| <code class="code">T</code> and the machine options the compiler was invoked with. |
| </p><p> |
| When targeting ARM/Aarch64 or POWER, |
| <code class="classname">simd_abi::native<T></code> is an alias for |
| <code class="classname">simd_abi::scalar</code> or |
| <code class="classname">simd_abi::_VecBuiltin<16></code>, depending on |
| <code class="code">T</code> and the machine options the compiler was invoked with. |
| </p><p> |
| For any other targeted machine |
| <code class="classname">simd_abi::compatible<T></code> and |
| <code class="classname">simd_abi::native<T></code> are aliases for |
| <code class="classname">simd_abi::scalar</code>. (subject to change) |
| </p><p> |
| The extended ABI tag types defined in the |
| <code class="code">std::experimental::parallelism_v2::simd_abi</code> namespace are: |
| <code class="classname">simd_abi::_VecBuiltin<Bytes></code>, and |
| <code class="classname">simd_abi::_VecBltnBtmsk<Bytes></code>. |
| </p><p> |
| <code class="classname">simd_abi::deduce<T, N, Abis...>::type</code>, |
| with <code class="code">N > 1</code> is an alias for an extended ABI tag, if a |
| supported extended ABI tag exists. Otherwise it is an alias for |
| <code class="classname">simd_abi::fixed_size<N></code>. The <code class="classname"> |
| simd_abi::_VecBltnBtmsk</code> ABI tag is preferred over |
| <code class="classname">simd_abi::_VecBuiltin</code>. |
| </p><p> |
| <span class="emphasis"><em>9.4 [parallel.simd.traits]</em></span> |
| <code class="classname">memory_alignment<T, U>::value</code> is |
| <code class="code">sizeof(U) * T::size()</code> rounded up to the next power-of-two |
| value. |
| </p><p> |
| <span class="emphasis"><em>9.6.1 [parallel.simd.overview]</em></span> |
| On ARM, <code class="classname">simd<T, _VecBuiltin<Bytes>></code> |
| is supported if <code class="code">__ARM_NEON</code> is defined and |
| <code class="code">sizeof(T) <= 4</code>. Additionally, |
| <code class="code">sizeof(T) == 8</code> with integral <code class="code">T</code> is supported if |
| <code class="code">__ARM_ARCH >= 8</code>, and <code class="code">double</code> is supported if |
| <code class="code">__aarch64__</code> is defined. |
| |
| On POWER, <code class="classname">simd<T, _VecBuiltin<Bytes>></code> |
| is supported if <code class="code">__ALTIVEC__</code> is defined and <code class="code">sizeof(T) |
| < 8</code>. Additionally, <code class="code">double</code> is supported if |
| <code class="code">__VSX__</code> is defined, and any <code class="code">T</code> with <code class="code"> |
| sizeof(T) <= 8</code> is supported if <code class="code">__POWER8_VECTOR__</code> |
| is defined. |
| |
| On x86, given an extended ABI tag <code class="code">Abi</code>, |
| <code class="classname">simd<T, Abi></code> is supported according to the |
| following table: |
| </p><div class="table"><a id="table.par2ts_simd_support"></a><p class="title"><strong>Table 1.8. Support for Extended ABI Tags</strong></p><div class="table-contents"><table class="table" summary="Support for Extended ABI Tags" border="1"><colgroup><col align="left" class="c1" /><col align="left" class="c2" /><col align="left" class="c3" /><col align="left" class="c4" /></colgroup><thead><tr><th align="left">ABI tag <code class="code">Abi</code></th><th align="left">value type <code class="code">T</code></th><th align="left">values for <code class="code">Bytes</code></th><th align="left">required machine option</th></tr></thead><tbody><tr><td rowspan="6" align="left"> |
| <code class="classname">_VecBuiltin<Bytes></code> |
| </td><td rowspan="2" align="left"><code class="code">float</code></td><td align="left">8, 12, 16</td><td align="left">"-msse"</td></tr><tr><td align="left">20, 24, 28, 32</td><td align="left">"-mavx"</td></tr><tr><td rowspan="2" align="left"><code class="code">double</code></td><td align="left">16</td><td align="left">"-msse2"</td></tr><tr><td align="left">24, 32</td><td align="left">"-mavx"</td></tr><tr><td rowspan="2" align="left"> |
| integral types other than <code class="code">bool</code> |
| </td><td align="left"> |
| <code class="code">Bytes</code> ≤ 16 and <code class="code">Bytes</code> divisible by |
| <code class="code">sizeof(T)</code> |
| </td><td align="left">"-msse2"</td></tr><tr><td align="left"> |
| 16 < <code class="code">Bytes</code> ≤ 32 and <code class="code">Bytes</code> |
| divisible by <code class="code">sizeof(T)</code> |
| </td><td align="left">"-mavx2"</td></tr><tr><td rowspan="2" align="left"> |
| <code class="classname">_VecBuiltin<Bytes></code> and |
| <code class="classname">_VecBltnBtmsk<Bytes></code> |
| </td><td align="left"> |
| vectorizable types with <code class="code">sizeof(T)</code> ≥ 4 |
| </td><td rowspan="2" align="left"> |
| 32 < <code class="code">Bytes</code> ≤ 64 and <code class="code">Bytes</code> |
| divisible by <code class="code">sizeof(T)</code> |
| </td><td align="left">"-mavx512f"</td></tr><tr><td align="left"> |
| vectorizable types with <code class="code">sizeof(T)</code> < 4 |
| </td><td align="left">"-mavx512bw"</td></tr><tr><td rowspan="2" align="left"> |
| <code class="classname">_VecBltnBtmsk<Bytes></code> |
| </td><td align="left"> |
| vectorizable types with <code class="code">sizeof(T)</code> ≥ 4 |
| </td><td rowspan="2" align="left"> |
| <code class="code">Bytes</code> ≤ 32 and <code class="code">Bytes</code> divisible by |
| <code class="code">sizeof(T)</code> |
| </td><td align="left">"-mavx512vl"</td></tr><tr><td align="left"> |
| vectorizable types with <code class="code">sizeof(T)</code> < 4 |
| </td><td align="left">"-mavx512bw" and "-mavx512vl"</td></tr></tbody></table></div></div><p><br class="table-break" /> |
| </p></div></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="status.iso.2020"></a>C++ 2020</h3></div></div></div><p> |
| In this implementation the <code class="literal">-std=gnu++2a</code> or |
| <code class="literal">-std=c++2a</code> flag must be used to enable language |
| and library |
| features. See <a class="link" href="using.html#manual.intro.using.flags" title="Command Options">dialect</a> |
| options. The pre-defined symbol |
| <code class="constant">__cplusplus</code> is used to check for the |
| presence of the required flag. |
| </p><p> |
| This section describes the C++20 and library TS support in mainline GCC, |
| not in any particular release. |
| </p><p> |
| The following table lists new library features that have been accepted into |
| the C++20 working draft. The "Proposal" column provides a link to the |
| ISO C++ committee proposal that describes the feature, while the "Status" |
| column indicates the first version of GCC that contains an implementation of |
| this feature (if it has been implemented). |
| A dash (—) in the status column indicates that the changes in the proposal |
| either do not affect the code in libstdc++, or the changes are not required for conformance. |
| The "SD-6 Feature Test / Notes" column shows the corresponding macro or header from |
| <a class="link" href="https://isocpp.org/std/standing-documents/sd-6-sg10-feature-test-recommendations" target="_top">SD-6: |
| Feature-testing recommendations for C++</a> (where applicable) |
| or any notes about the implementation. |
| </p><div class="table"><a id="table.cxx20_features"></a><p class="title"><strong>Table 1.9. C++ 2020 Library Features</strong></p><div class="table-contents"><table class="table" summary="C++ 2020 Library Features" border="1"><colgroup><col align="left" class="c1" /><col align="left" class="c2" /><col align="left" class="c3" /><col align="left" class="c4" /></colgroup><thead><tr><th align="left">Library Feature</th><th align="left">Proposal</th><th align="left">Status</th><th align="left">SD-6 Feature Test / Notes</th></tr></thead><tbody><tr><td colspan="4" align="left"> |
| <span class="bold"><strong>Compile-time programming</strong></span> |
| </td></tr><tr><td align="left"> Add constexpr modifiers to functions in <code class="code"><algorithm></code> and <code class="code"><utility></code> Headers </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0202r3.html" target="_top"> |
| P0202R3 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_constexpr_algorithms >= 201703L</code> </td></tr><tr><td align="left"> Constexpr for <code class="code">swap</code> and swap related functions </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0879r0.html" target="_top"> |
| P0879R0 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_constexpr_algorithms >= 201806L</code> </td></tr><tr><td align="left"> Constexpr for <code class="code">std::complex</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0415r1.html" target="_top"> |
| P0415R1 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> <code class="code">__cpp_lib_constexpr_complex >= 201711L</code> (since 9.4, see Note 1) </td></tr><tr><td align="left"> P0595R2 <code class="code">std::is_constant_evaluated()</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0595r2.html" target="_top"> |
| P0595R2 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> <code class="code">__cpp_lib_is_constant_evaluated >= 201811L</code> </td></tr><tr><td align="left"> More constexpr containers </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0784r7.html" target="_top"> |
| P0784R7 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_constexpr_dynamic_alloc >= 201907L</code> </td></tr><tr bgcolor="#C8B0B0"><td align="left"> Making <code class="code">std::string</code> constexpr </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0980r1.pdf" target="_top"> |
| P0980R1 </a> |
| </td><td align="left"> </td><td align="left"> <code class="code">__cpp_lib_constexpr_string >= 201907L</code> </td></tr><tr bgcolor="#C8B0B0"><td align="left"> Making <code class="code">std::vector</code> constexpr </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1004r2.pdf" target="_top"> |
| P1004R2 </a> |
| </td><td align="left"> </td><td align="left"> <code class="code">__cpp_lib_constexpr_vector >= 201907L</code> </td></tr><tr><td align="left"> Constexpr in <code class="code">std::pointer_traits</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1006r1.pdf" target="_top"> |
| P1006R1 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> <code class="code">__cpp_lib_constexpr_memory >= 201811L</code> (since 9.4, see Note 1) </td></tr><tr><td align="left"> constexpr for <code class="code"><numeric></code> algorithms </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1645r1.html" target="_top"> |
| P1645R1 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_constexpr_numeric >= 201911L</code> </td></tr><tr><td align="left"> Constexpr iterator requirements </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0858r0.html" target="_top"> |
| P0858R0 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> |
| <div class="informaltable"><table class="informaltable" border="0"><colgroup><col /></colgroup><tbody><tr><td> <code class="code">__cpp_lib_array_constexpr >= 201803L</code> </td></tr><tr><td> <code class="code">__cpp_lib_string_view >= 201803L</code> </td></tr><tr><td> (both since 9.4, see Note 1) </td></tr></tbody></table></div> |
| </td></tr><tr><td align="left"> <code class="code">constexpr</code> comparison operators for <code class="code">std::array</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1023r0.pdf" target="_top"> |
| P1023R0 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_array_constexpr >= 201806</code> </td></tr><tr><td align="left"> Misc constexpr bits </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1032r1.html" target="_top"> |
| P1032R1 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> |
| <div class="informaltable"><table class="informaltable" border="0"><colgroup><col /></colgroup><tbody><tr><td> <code class="code">__cpp_lib_array_constexpr >= 201811L</code> </td></tr><tr><td> <code class="code">__cpp_lib_constexpr_functional >= 201811L</code> </td></tr><tr><td> <code class="code">__cpp_lib_constexpr_iterator >= 201811L</code> </td></tr><tr><td> <code class="code">__cpp_lib_constexpr_string_view >= 201811L</code> </td></tr><tr><td> <code class="code">__cpp_lib_constexpr_tuple >= 201811L</code> </td></tr><tr><td> <code class="code">__cpp_lib_constexpr_utility >= 201811L</code> </td></tr></tbody></table></div> |
| </td></tr><tr><td align="left"> <code class="code">constexpr <span class="emphasis"><em>INVOKE</em></span></code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1065r2.html" target="_top"> |
| P1065R2 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_constexpr_functional >= 201907L</code> </td></tr><tr><td align="left"> Transformation Trait <code class="code">remove_cvref</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0550r2.pdf" target="_top"> |
| P0550R2 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> <code class="code">__cpp_lib_remove_cvref >= 201711L</code> (since 9.4, see Note 1) </td></tr><tr><td align="left"> Implicit conversion traits and utility functions </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0758r1.html" target="_top"> |
| P0758R1 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> <code class="code">__cpp_lib_is_nothrow_convertible >= 201806L</code> (since 9.4, see Note 1) </td></tr><tr><td align="left"> The <code class="code">identity</code> metafunction </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0887r1.pdf" target="_top"> |
| P0887R1 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> <code class="code">__cpp_lib_type_identity >= 201806L</code> (since 9.4, see Note 1) </td></tr><tr><td align="left"> <code class="code">unwrap_ref_decay</code> and <code class="code">unwrap_reference</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0318r1.pdf" target="_top"> |
| P0318R1 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> <code class="code">__cpp_lib_unwrap_ref >= 201811L</code> (since 9.4, see Note 1) </td></tr><tr bgcolor="#B0B0B0"><td align="left"> Improving Completeness Requirements for Type Traits </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1285r0.pdf" target="_top"> |
| P1285R0 </a> |
| </td><td align="center"> Partial </td><td align="left"> </td></tr><tr><td align="left"> Missing feature test macros </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1353r0.html" target="_top"> |
| P1353R0 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> </td></tr><tr><td align="left"> Making std::underlying_type SFINAE-friendly </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0340r3.html" target="_top"> |
| P0340R3 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> </td></tr><tr><td align="left"> Traits for [Un]bounded Arrays </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1357r1.pdf" target="_top"> |
| P1357R1 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> <code class="code">__cpp_lib_bounded_array_traits >= 201902L</code> </td></tr><tr><td align="left"> Layout-compatibility and pointer-interconvertibility traits </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0466r5.pdf" target="_top"> |
| P0466R5 </a> |
| </td><td align="center"> 12 </td><td align="left"> |
| <div class="informaltable"><table class="informaltable" border="0"><colgroup><col /></colgroup><tbody><tr><td> <code class="code">__cpp_lib_is_layout_compatible >= 201907L</code> </td></tr><tr><td> <code class="code">__cpp_lib_is_pointer_interconvertible >= 201907L</code> </td></tr></tbody></table></div> |
| </td></tr><tr><td align="left"> Integrating feature-test macros into the C++ WD </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0941r2.html" target="_top"> |
| P0941R2 </a> |
| </td><td align="center"> 5.1 </td><td align="left"> </td></tr><tr><td align="left"> <code class="code"><version></code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0754r2.pdf" target="_top"> |
| P0754R2 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> <code class="code">__has_include(<version>)</code> </td></tr><tr><td colspan="4" align="left"> |
| <span class="bold"><strong>Synchronization</strong></span> |
| </td></tr><tr><td align="left"> Atomic Ref </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0019r8.html" target="_top"> |
| P0019R8 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_atomic_ref >= 201806L</code> </td></tr><tr><td align="left"> Floating Point Atomic </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0020r6.html" target="_top"> |
| P0020R6 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_atomic_float >= 201711L</code> </td></tr><tr><td align="left"> C++ Synchronized Buffered Ostream </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0053r7.pdf" target="_top"> |
| P0053R7 </a> |
| </td><td align="center"> 11 </td><td align="left"> <code class="code">__cpp_lib_syncbuf >= 201711L</code> </td></tr><tr><td align="left"> Manipulators for C++ Synchronized Buffered Ostream </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0753r2.pdf" target="_top"> |
| P0753R2 </a> |
| </td><td align="center"> 11 </td><td align="left"> <code class="code">__cpp_lib_syncbuf >= 201803L</code> </td></tr><tr><td align="left"> Make <code class="code">std::memory_order</code> a scoped enumeration </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0439r0.html" target="_top"> |
| P0439R0 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left"> The Curious Case of Padding Bits, Featuring Atomic Compare-and-Exchange </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0528r3.html" target="_top"> |
| P0528R3 </a> |
| </td><td align="center"> </td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left"> Atomic <code class="code">shared_ptr</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0718r2.html" target="_top"> |
| P0718R2 </a> |
| </td><td align="center"> </td><td align="left"> <code class="code"> __cpp_lib_atomic_shared_ptr >= 201711L</code> </td></tr><tr><td align="left"> std::stop_token and std::jthread </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0660r10.pdf" target="_top"> |
| P0660R10 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_jthread >= 201907L</code> </td></tr><tr><td align="left"> Rename <code class="code">condition_variable_any</code> interruptible wait methods </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1869r1.html" target="_top"> |
| P1869R1 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_jthread >= 201911L</code> </td></tr><tr><td align="left"> Atomic waiting and notifying, std::semaphore, std::latch and std::barrier </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1135r6.html" target="_top"> |
| P1135R6 </a> |
| </td><td align="center"> 11.1 </td><td align="left"> |
| <div class="informaltable"><table class="informaltable" border="0"><colgroup><col /></colgroup><tbody><tr><td> <code class="code">__cpp_lib_atomic_lock_free_type_aliases >= 201907L</code> </td></tr><tr><td> <code class="code">__cpp_lib_atomic_flag_test >= 201907L</code> </td></tr><tr><td> <code class="code">__cpp_lib_atomic_wait >= 201907L</code> </td></tr><tr><td> <code class="code">__cpp_lib_semaphore >= 201907L</code> </td></tr><tr><td> <code class="code">__cpp_lib_latch >= 201907L</code> </td></tr><tr><td> <code class="code">__cpp_lib_barrier >= 201907L</code> </td></tr></tbody></table></div> |
| </td></tr><tr><td align="left"> Fixing Atomic Initialization </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0883r2.pdf" target="_top"> |
| P0883R2 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_atomic_value_initialization >= 201911L</code> </td></tr><tr><td colspan="4" align="left"> |
| <span class="bold"><strong>Ranges and Concepts</strong></span> |
| </td></tr><tr><td align="left"> Standard Library Concepts </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0898r3.pdf" target="_top"> |
| P0898R3 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_concepts >= 201806L</code> </td></tr><tr><td align="left"> Rename concepts to standard_case for C++20, while we still can </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1754r1.pdf" target="_top"> |
| P1754R1 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_concepts >= 201907L</code> </td></tr><tr><td align="left"> Wording for <span class="emphasis"><em><code class="code">boolean-testable</code></em></span> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2020/p1964r2.html" target="_top"> |
| P1964R2 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_concepts >= 202002L</code> </td></tr><tr><td align="left"> The One Ranges Proposal </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0896r4.pdf" target="_top"> |
| P0896R4 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_ranges >= 201811L</code> </td></tr><tr><td align="left"> Input Range Adaptors </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1035r7.pdf" target="_top"> |
| P1035R7 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_ranges >= 201907L</code> </td></tr><tr><td align="left"> <code class="code">ranges</code> compare algorithm are over-constrained </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1716r3.html" target="_top"> |
| P1716R3 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_ranges >= 201911L</code> </td></tr><tr><td align="left"> Remove CommonReference requirement from StrictWeakOrdering (a.k.a Fixing Relations) </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1248r1.html" target="_top"> |
| P1248R1 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> </td></tr><tr><td align="left"> Ranges Design Cleanup </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1252r2.pdf" target="_top"> |
| P1252R2 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left"> Avoid template bloat for <code class="code">safe_ranges</code> in combination with ‘subrange-y’ view adaptors.</td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2020/p1739r4.html" target="_top"> |
| P1739R4 </a> |
| </td><td align="center"> </td><td align="left"> </td></tr><tr><td colspan="4" align="left"> |
| <span class="bold"><strong>Time, dates, calendars, time zones</strong></span> |
| </td></tr><tr bgcolor="#C8B0B0"><td align="left"> Extending chrono to Calendars and Time Zones </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0355r7.html" target="_top"> |
| P0355R7 </a> |
| </td><td align="left"> </td><td align="left"> <code class="code">__cpp_lib_chrono >= 201803L</code> </td></tr><tr bgcolor="#C8B0B0"><td align="left"> Miscellaneous minor fixes for chrono </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1466r3.html" target="_top"> |
| P1466R3 </a> |
| </td><td align="left"> </td><td align="left"> <code class="code">__cpp_lib_chrono >= 201907L</code> </td></tr><tr><td align="left"> <code class="code"><chrono></code> <code class="code">zero()</code>, <code class="code">min()</code>, and <code class="code">max()</code> should be <code class="code">noexcept</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0972r0.pdf" target="_top"> |
| P0972R0 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> </td></tr><tr><td colspan="4" align="left"> |
| <span class="bold"><strong>Three-way comparison</strong></span> |
| </td></tr><tr><td align="left"> Library Support for the Spaceship (Comparison) Operator </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0768r1.pdf" target="_top"> |
| P0768R1 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_three_way_comparison >= 201711L</code> </td></tr><tr><td align="left"> Symmetry for spaceship </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0905r1.html" target="_top"> |
| P0905R1 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> </td></tr><tr><td align="left"> Adding <=> to the standard library </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1614r2.html" target="_top"> |
| P1614R2 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> |
| <code class="code">__cpp_lib_three_way_comparison >= 201907L</code> |
| </td></tr><tr><td colspan="4" align="left"> |
| <span class="bold"><strong>Strings and text</strong></span> |
| </td></tr><tr><td align="left"> <code class="code">string::reserve</code> Should Not Shrink </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0966r1.html" target="_top"> |
| P0966R1 </a> |
| </td><td align="center"> 11 </td><td align="left"> </td></tr><tr><td align="left"> <code class="code">char8_t</code>: A type for UTF-8 characters and strings </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0482r6.html" target="_top"> |
| P0482R6 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> <code class="code">__cpp_lib_char8_t >= 201811L</code> </td></tr><tr><td align="left"> <code class="code">char8_t</code> backward compatibility remediation </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1423r3.html" target="_top"> |
| P1423R3 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_char8_t >= 201907L</code> </td></tr><tr bgcolor="#C8B0B0"><td align="left"> Text formatting </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0645r10.html" target="_top"> |
| P0645R10 </a> |
| </td><td align="center"> </td><td align="left"> |
| <code class="code">__cpp_lib_format >= 201907L</code> |
| </td></tr><tr bgcolor="#C8B0B0"><td align="left"> Integration of chrono with text formatting </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1361r2.pdf" target="_top"> |
| P1361R2 </a> |
| </td><td align="center"> </td><td align="left"> |
| <code class="code">__cpp_lib_format >= 201907L</code> |
| </td></tr><tr bgcolor="#C8B0B0"><td align="left"> Printf corner cases in <code class="code">std::format</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1652r1.html" target="_top"> |
| P1652R1 </a> |
| </td><td align="center"> </td><td align="left"> |
| <code class="code">__cpp_lib_format >= 201907L</code> |
| </td></tr><tr><td align="left"> String Prefix and Suffix Checking </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0457r2.html" target="_top"> |
| P0457R2 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> <code class="code">__cpp_lib_starts_ends_with >= 201711L</code> (since 9.4, see Note 1) </td></tr><tr bgcolor="#C8B0B0"><td align="left"> Update The Reference To The Unicode Standard </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1025r1.html" target="_top"> |
| P1025R1 </a> |
| </td><td align="center"> </td><td align="left"> </td></tr><tr><td colspan="4" align="left"> |
| <span class="bold"><strong>Containers</strong></span> |
| </td></tr><tr><td align="left"> span: bounds-safe views for sequences of objects </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0122r7.pdf" target="_top"> |
| P0122R7 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_span >= 201803L</code> </td></tr><tr><td align="left"> |
| Usability Enhancements for <code class="classname">std::span</code> |
| </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1024r3.pdf" target="_top"> |
| P1024R3 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_span >= 201902L</code> </td></tr><tr><td align="left"> Should Span be Regular? </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1085r2.md" target="_top"> |
| P1085R2 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> </td></tr><tr><td align="left"> Fixed-size <code class="code"><span></code> construction from dynamic range </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2020/p1976r2.html" target="_top"> |
| P1976R2 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_span >= 202002L</code> </td></tr><tr><td align="left"> <code class="code">std::to_array</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0325r4.html" target="_top"> |
| P0325R4 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_to_array >= 201907L</code> </td></tr><tr><td align="left"> Checking for Existence of an Element in Associative Containers </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0458r2.html" target="_top"> |
| P0458R2 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left"> Comparing Unordered Containers </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0809r0.pdf" target="_top"> |
| P0809R0 </a> |
| </td><td align="center"> </td><td align="left"> </td></tr><tr><td align="left"> Heterogeneous lookup for unordered containers </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0919r3.html" target="_top"> |
| P0919R3 </a> |
| </td><td align="center"> 11.1 </td><td align="left"> <code class="code">__cpp_lib_generic_unordered_lookup >= 201811</code> </td></tr><tr><td align="left"> Refinement Proposal for P0919 </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1690r1.html" target="_top"> |
| P1690R1 </a> |
| </td><td align="center"> 11.1 </td><td align="left"> </td></tr><tr><td align="left"> Adopt Consistent Container Erasure from Library Fundamentals 2 for C++20 </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1209r0.html" target="_top"> |
| P1209R0 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> <code class="code">__cpp_lib_erase_if >= 201811L</code> </td></tr><tr><td align="left"> Improving the Return Value of Erase-Like Algorithms </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0646r1.pdf" target="_top"> |
| P0646R1 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> <code class="code">__cpp_lib_list_remove_return_type >= 201806L</code> </td></tr><tr><td align="left"> Improving the Return Value of Erase-Like Algorithms II: Free <code class="code">erase</code>/<code class="code">erase_if</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1115r3.pdf" target="_top"> |
| P1115R3 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> |
| <div class="informaltable"><table class="informaltable" border="0"><colgroup><col /></colgroup><tbody><tr><td> <code class="code">__cpp_lib_erase_if >= 202002L</code> </td></tr><tr><td> (defined to <code class="code">201900L</code> for GCC 9.1 and 9.2 so use <code class="code">> 201811L</code>) </td></tr></tbody></table></div> |
| </td></tr><tr><td align="left"> Signed ssize() functions, unsigned size() functions </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1227r2.html" target="_top"> |
| P1227R2 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_ssize >= 201902L</code> </td></tr><tr><td colspan="4" align="left"> |
| <span class="bold"><strong>Memory management</strong></span> |
| </td></tr><tr><td align="left"> Utility to convert a pointer to a raw pointer </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0653r2.html" target="_top"> |
| P0653R2 </a> |
| </td><td align="center"> 8.1 </td><td align="left"> <code class="code">__cpp_lib_to_address >= 201711L</code> (since 9.4, see Note 1) </td></tr><tr bgcolor="#C8B0B0"><td align="left"> Extending <code class="code">make_shared</code> to Support Arrays </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0674r1.html" target="_top"> |
| P0674R1 </a> |
| </td><td align="center"> </td><td align="left"> <code class="code">__cpp_lib_shared_ptr_arrays >= 201707L</code> </td></tr><tr><td align="left"> Efficient sized delete for variable sized classes </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0722r3.html" target="_top"> |
| P0722R3 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> <code class="code">__cpp_lib_destroying_delete >= 201806L</code> </td></tr><tr><td align="left"> Utility functions to implement uses-allocator construction </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0591r4.pdf" target="_top"> |
| P0591R4 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> |
| <code class="code">std::scoped_allocator_adaptor</code> changes missing in 9.1.0 |
| </td></tr><tr><td align="left"> <code class="code">std::assume_aligned</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1007r3.pdf" target="_top"> |
| P1007R3 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> <code class="code">__cpp_lib_assume_aligned >= 201811L</code> (since 9.4, see Note 1) </td></tr><tr bgcolor="#C8B0B0"><td align="left"> Smart pointer creation with default initialization </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1020r1.html" target="_top"> |
| P1020R1 </a> |
| </td><td align="center"> </td><td align="left"> <code class="code">__cpp_lib_smart_ptr_for_overwrite >= 201811L</code> </td></tr><tr><td align="left"> Make stateful allocator propagation more consistent for <code class="code">operator+(basic_string)</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1165r1.html" target="_top"> |
| P1165R1 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> </td></tr><tr><td align="left"> |
| <code class="classname">polymorphic_allocator<></code> as a vocabulary type |
| </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0339r6.pdf" target="_top"> |
| P0339R6 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> |
| <code class="code">__cpp_lib_polymorphic_allocator >= 201902L</code> (since 9.4, see Note 1) |
| </td></tr><tr><td align="left"> LWG 2511: guaranteed copy elision for piecewise construction </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0475r1.html" target="_top"> |
| P0475R1 </a> |
| </td><td align="center"> 7.1 </td><td align="left"> </td></tr><tr><td colspan="4" align="left"> |
| <span class="bold"><strong>Miscellaneous</strong></span> |
| </td></tr><tr><td align="left"> <code class="code">nodiscard</code> in the Library </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0600r1.pdf" target="_top"> |
| P0600R1 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> </td></tr><tr><td align="left"> de-pessimize legacy algorithms with <code class="code">std::move</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0616r0.pdf" target="_top"> |
| P0616R0 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> </td></tr><tr><td align="left"> Deprecate POD </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0767r1.html" target="_top"> |
| P0767R1 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> </td></tr><tr><td align="left"> Treating Unnecessary <code class="code">decay</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0777r1.pdf" target="_top"> |
| P0777R1 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left"> Thou Shalt Not Specialize std Function Templates! </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0551r3.pdf" target="_top"> |
| P0551R3 </a> |
| </td><td align="center"> </td><td align="left"> </td></tr><tr><td align="left"> Bit-casting object representations </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0476r2.html" target="_top"> |
| P0476R2 </a> |
| </td><td align="center"> 11 </td><td align="left"> <code class="code">__cpp_lib_bit_cast >= 201806L</code> </td></tr><tr><td align="left"> Integral power-of-2 operations </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0556r3.html" target="_top"> |
| P0556R3 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> <code class="code">__cpp_lib_int_pow2 >= 201806L</code> (since 9.4, see Note 1) </td></tr><tr><td align="left"> On the names of low-level bit manipulation functions </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2020/p1956r1.pdf" target="_top"> |
| P1956R1 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_int_pow2 >= 202002L</code> </td></tr><tr><td align="left"> Safe integral comparisons </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2020/p0586r2.html" target="_top"> |
| P0586R2 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_integer_comparison_functions >= 202002L</code> </td></tr><tr bgcolor="#C8B0B0"><td align="left"> Reviewing Deprecated Facilities of C++17 for C++20 </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0619r4.html" target="_top"> |
| P0619R4 </a> |
| </td><td align="center"> </td><td align="left"> </td></tr><tr><td align="left"> <code class="code">fpos</code> Requirements </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0759r1.html" target="_top"> |
| P0759R1 </a> |
| </td><td align="center"> — </td><td align="left"> </td></tr><tr><td align="left"> Add <code class="code">shift</code> to <code class="code"><algorithm></code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0769r2.pdf" target="_top"> |
| P0769R2 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_shift >= 201806L</code> </td></tr><tr bgcolor="#C8B0B0"><td align="left"> Standard Library Specification in a Concepts and Contracts World </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0788r3.pdf" target="_top"> |
| P0788R3 </a> |
| </td><td align="center"> </td><td align="left"> </td></tr><tr><td align="left"> <code class="code">explicit(bool)</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0892r2.html" target="_top"> |
| P0892R2 </a> |
| </td><td align="center"> — </td><td align="left"> </td></tr><tr><td align="left"> Eradicating unnecessarily explicit default constructors from the standard library </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0935r0.html" target="_top"> |
| P0935R0 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> </td></tr><tr><td align="left"> <code class="code">std::function</code> move constructor should be <code class="code">noexcept</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0771r1.pdf" target="_top"> |
| P0771R1 </a> |
| </td><td align="center"> 7.2 </td><td align="left"> </td></tr><tr><td align="left"> Simplified partial function application </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0356r5.html" target="_top"> |
| P0356R5 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> <code class="code">__cpp_lib_bind_front >= 201811L</code> </td></tr><tr><td align="left"> <code class="code">bind_front</code> should not unwrap <code class="code">reference_wrapper</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1651r0.html" target="_top"> |
| P1651R0 </a> |
| </td><td align="center"> 9.3 </td><td align="left"> <code class="code">__cpp_lib_bind_front >= 201907L</code> </td></tr><tr><td align="left"> <code class="code">reference_wrapper</code> for incomplete types </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0357r3.html" target="_top"> |
| P0357R3 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> </td></tr><tr><td align="left"> Fixing <code class="code">operator>>(basic_istream&, CharT*)</code> (LWG 2499) </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0487r1.html" target="_top"> |
| P0487R1 </a> |
| </td><td align="center"> 11.1 </td><td align="left"> </td></tr><tr><td align="left"> <code class="code">variant</code> and <code class="code">optional</code> should propagate copy/move triviality </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0602r4.html" target="_top"> |
| P0602R4 </a> |
| </td><td align="center"> 8.3 </td><td align="left"> </td></tr><tr><td align="left"> A sane <code class="code">variant</code> converting constructor </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0608r3.html" target="_top"> |
| P0608R3 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> </td></tr><tr><td align="left"> <code class="code">visit<R></code>: Explicit Return Type for <code class="code">visit</code> </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0655r1.pdf" target="_top"> |
| P0655R1 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> </td></tr><tr><td align="left"> P0899R1 - LWG 3016 is not a defect </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0899r1.html" target="_top"> |
| P0899R1 </a> |
| </td><td align="center"> 7.1 </td><td align="left"> </td></tr><tr><td align="left"> Editorial Guidance for merging P0019r8 and P0528r3 </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1123r0.html" target="_top"> |
| P1123R0 </a> |
| </td><td align="center"> — </td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left"> Cleaning up Clause 20 </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1148r0.pdf" target="_top"> |
| P1148R0 </a> |
| </td><td align="center"> </td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left"> Completing the Rebase of Library Fundamentals, Version 3, Working Draft </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1210r0.html" target="_top"> |
| P1210R0 </a> |
| </td><td align="center"> </td><td align="left"> </td></tr><tr><td align="left"> Alternative Wording for P0907R4 Signed Integers are Two's Complement </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1236r1.html" target="_top"> |
| P1236R1 </a> |
| </td><td align="center"> — </td><td align="left"> </td></tr><tr><td align="left"> |
| I Stream, You Stream, We All Stream for |
| <code class="classname">istream_iterator</code> |
| </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0738r2.html" target="_top"> |
| P0738R2 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> </td></tr><tr><td align="left"> |
| Mandating the Standard Library: |
| Clause 16 - Language support library |
| </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1458r1.pdf" target="_top"> |
| P1458R1 </a> |
| </td><td align="center"> — </td><td align="left"> </td></tr><tr><td align="left"> |
| Mandating the Standard Library: |
| Clause 18 - Diagnostics library |
| </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1458r1.pdf" target="_top"> |
| P1459R1 </a> |
| </td><td align="center"> — </td><td align="left"> </td></tr><tr><td align="left"> |
| Mandating the Standard Library: |
| Clause 20 - Strings library |
| </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1462r1.html" target="_top"> |
| P1462R1 </a> |
| </td><td align="center"> — </td><td align="left"> </td></tr><tr><td align="left"> |
| Mandating the Standard Library: |
| Clause 21 - Containers library |
| </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1463r1.pdf" target="_top"> |
| P1463R1 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left"> |
| Mandating the Standard Library: |
| Clause 22 - Iterators library |
| </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1464r1.pdf" target="_top"> |
| P1464R1 </a> |
| </td><td align="center"> </td><td align="left"> </td></tr><tr><td align="left"> Make <code class="code">create_directory()</code> Intuitive </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1164r1.pdf" target="_top"> |
| P1164R1 |
| </a> |
| </td><td align="center"> 8.3 </td><td align="left"> Treated as a DR for C++17 </td></tr><tr><td align="left"> |
| Target Vectorization Policies from Parallelism V2 TS to C++20 |
| </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1001r2.html" target="_top"> |
| P1001R2 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> <code class="code">__cpp_lib_execution >= 201902L</code> (since 9.4, see Note 1)</td></tr><tr><td align="left"> Merge Coroutines TS into C++20 working draft </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0912r5.html" target="_top"> |
| P0912R5 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_coroutines >= 201902L</code> </td></tr><tr><td align="left"> Endian just Endian </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0463r1.html" target="_top"> |
| P0463R1 </a> |
| </td><td align="center"> 8.1 </td><td align="left"> <code class="code">__cpp_lib_endian >= 201907L</code> </td></tr><tr><td align="left"> Bit operations </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0553r4.html" target="_top"> |
| P0553R4 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_bitops >= 201907L</code> (since 9.4, see Note 1) </td></tr><tr><td align="left"> Well-behaved interpolation for numbers and pointers </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0811r3.html" target="_top"> |
| P0811R3 </a> |
| </td><td align="center"> 9.1 </td><td align="left"> <code class="code">__cpp_lib_interpolate >= 201902L</code> </td></tr><tr><td align="left"> Mathematical constants </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0631r8.pdf" target="_top"> |
| P0631R8 </a> |
| </td><td align="center"> 10.1 </td><td align="left"> <code class="code">__cpp_lib_math_constants >= 201907L</code> </td></tr><tr><td align="left"> std::source_location </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1208r6.pdf" target="_top"> |
| P1208R6 </a> |
| </td><td align="center"> 11 </td><td align="left"> |
| <code class="code">__cpp_lib_source_location >= 201907L</code> |
| </td></tr><tr><td align="left"> Efficient access to std::basic_stringbuf's Buffer </td><td align="left"> |
| <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0408r7.pdf" target="_top"> |
| P0408R7 </a> |
| </td><td align="center"> 11 </td><td align="left"> </td></tr></tbody></table></div></div><br class="table-break" /><p> |
| Note 1: This feature is supported in older releases but the |
| <code class="code">__cpp_lib</code> macro is not defined to the right value |
| (or not defined at all) until the version shown in parentheses. |
| </p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="status.iso.tr1"></a>C++ TR1</h3></div></div></div><p> |
| This table is based on the table of contents of ISO/IEC DTR 19768, |
| Doc No: N1836=05-0096, Date: 2005-06-24, |
| "Draft Technical Report on C++ Library Extensions". |
| </p><p> |
| In this implementation the header names are prefixed by |
| <code class="code">tr1/</code>, for instance <code class="code"><tr1/functional></code>, |
| <code class="code"><tr1/memory></code>, and so on. |
| </p><p> |
| This page describes the TR1 support in mainline GCC, not in any particular |
| release. |
| </p><div class="table"><a id="table.tr1_status"></a><p class="title"><strong>Table 1.10. C++ TR1 Implementation Status</strong></p><div class="table-contents"><table class="table" summary="C++ TR1 Implementation Status" border="1"><colgroup><col align="left" class="c1" /><col align="left" class="c2" /><col align="left" class="c3" /><col align="left" class="c4" /></colgroup><thead><tr><th align="left">Section</th><th align="left">Description</th><th align="left">Status</th><th align="left">Comments</th></tr></thead><tbody><tr><td align="left"><span class="emphasis"><em>2</em></span></td><td colspan="3" align="left"><span class="emphasis"><em>General Utilities</em></span></td></tr><tr><td align="left">2.1</td><td align="left">Reference wrappers</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">2.1.1</td><td align="left">Additions to header <code class="code"><functional></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.1.2</td><td align="left">Class template <code class="code">reference_wrapper</code></td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">2.1.2.1</td><td align="left"><code class="code">reference_wrapper</code> construct/copy/destroy</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.1.2.2</td><td align="left"><code class="code">reference_wrapper</code> assignment</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.1.2.3</td><td align="left"><code class="code">reference_wrapper</code> access</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.1.2.4</td><td align="left"><code class="code">reference_wrapper</code> invocation</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.1.2.5</td><td align="left"><code class="code">reference_wrapper</code> helper functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2</td><td align="left">Smart pointers</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">2.2.1</td><td align="left">Additions to header <code class="code"><memory></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.2</td><td align="left">Class <code class="code">bad_weak_ptr</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.3</td><td align="left">Class template <code class="code">shared_ptr</code></td><td align="left"> </td><td align="left"> |
| <p> |
| Uses code from |
| <a class="link" href="http://www.boost.org/libs/smart_ptr/shared_ptr.htm" target="_top">boost::shared_ptr</a>. |
| </p> |
| </td></tr><tr><td align="left">2.2.3.1</td><td align="left"><code class="code">shared_ptr</code> constructors</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.3.2</td><td align="left"><code class="code">shared_ptr</code> destructor</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.3.3</td><td align="left"><code class="code">shared_ptr</code> assignment</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.3.4</td><td align="left"><code class="code">shared_ptr</code> modifiers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.3.5</td><td align="left"><code class="code">shared_ptr</code> observers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.3.6</td><td align="left"><code class="code">shared_ptr</code> comparison</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.3.7</td><td align="left"><code class="code">shared_ptr</code> I/O</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.3.8</td><td align="left"><code class="code">shared_ptr</code> specialized algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.3.9</td><td align="left"><code class="code">shared_ptr</code> casts</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.3.10</td><td align="left"><code class="code">get_deleter</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.4</td><td align="left">Class template <code class="code">weak_ptr</code></td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">2.2.4.1</td><td align="left"><code class="code">weak_ptr</code> constructors</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.4.2</td><td align="left"><code class="code">weak_ptr</code> destructor</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.4.3</td><td align="left"><code class="code">weak_ptr</code> assignment</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.4.4</td><td align="left"><code class="code">weak_ptr</code> modifiers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.4.5</td><td align="left"><code class="code">weak_ptr</code> observers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.4.6</td><td align="left"><code class="code">weak_ptr</code> comparison</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.4.7</td><td align="left"><code class="code">weak_ptr</code> specialized algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">2.2.5</td><td align="left">Class template <code class="code">enable_shared_from_this</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"><span class="emphasis"><em>3</em></span></td><td colspan="3" align="left"><span class="emphasis"><em>Function Objects</em></span></td></tr><tr><td align="left">3.1</td><td align="left">Definitions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.2</td><td align="left">Additions to <code class="code"><functional> synopsis</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.3</td><td align="left">Requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.4</td><td align="left">Function return types</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.5</td><td align="left">Function template <code class="code">mem_fn</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.6</td><td align="left">Function object binders</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">3.6.1</td><td align="left">Class template <code class="code">is_bind_expression</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.6.2</td><td align="left">Class template <code class="code">is_placeholder</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.6.3</td><td align="left">Function template <code class="code">bind</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.6.4</td><td align="left">Placeholders</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.7</td><td align="left">Polymorphic function wrappers</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">3.7.1</td><td align="left">Class <code class="code">bad_function_call</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.7.1.1</td><td align="left"><code class="code">bad_function_call</code> constructor</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.7.2</td><td align="left">Class template <code class="code">function</code></td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">3.7.2.1</td><td align="left"><code class="code">function</code> construct/copy/destroy</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.7.2.2</td><td align="left"><code class="code">function</code> modifiers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.7.2.3</td><td align="left"><code class="code">function</code> capacity</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.7.2.4</td><td align="left"><code class="code">function</code> invocation</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.7.2.5</td><td align="left"><code class="code">function</code> target access</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.7.2.6</td><td align="left">undefined operators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.7.2.7</td><td align="left">null pointer comparison operators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.7.2.8</td><td align="left">specialized algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"><span class="emphasis"><em>4</em></span></td><td colspan="3" align="left"><span class="emphasis"><em>Metaprogramming and type traits</em></span></td></tr><tr><td align="left">4.1</td><td align="left">Requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">4.2</td><td align="left">Header <code class="code"><type_traits></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">4.3</td><td align="left">Helper classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">4.4</td><td align="left">General Requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">4.5</td><td align="left">Unary Type Traits</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">4.5.1</td><td align="left">Primary Type Categories</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">4.5.2</td><td align="left">Composite type traits</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">4.5.3</td><td align="left">Type properties</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">4.6</td><td align="left">Relationships between types</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">4.7</td><td align="left">Transformations between types</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">4.7.1</td><td align="left">Const-volatile modifications</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">4.7.2</td><td align="left">Reference modifications</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">4.7.3</td><td align="left">Array modifications</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">4.7.4</td><td align="left">Pointer modifications</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">4.8</td><td align="left">Other transformations</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">4.9</td><td align="left">Implementation requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"><span class="emphasis"><em>5</em></span></td><td colspan="3" align="left"><span class="emphasis"><em>Numerical Facilities</em></span></td></tr><tr><td align="left">5.1</td><td align="left">Random number generation</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">5.1.1</td><td align="left">Requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.2</td><td align="left">Header <code class="code"><random></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.3</td><td align="left">Class template <code class="code">variate_generator</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.4</td><td align="left">Random number engine class templates</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.4.1</td><td align="left">Class template <code class="code">linear_congruential</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.4.2</td><td align="left">Class template <code class="code">mersenne_twister</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.4.3</td><td align="left">Class template <code class="code">subtract_with_carry</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.4.4</td><td align="left">Class template <code class="code">subtract_with_carry_01</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.4.5</td><td align="left">Class template <code class="code">discard_block</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.4.6</td><td align="left">Class template <code class="code">xor_combine</code></td><td align="left">Y</td><td align="left">operator()() per N2079</td></tr><tr><td align="left">5.1.5</td><td align="left">Engines with predefined parameters</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.6</td><td align="left">Class <code class="code">random_device</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.7</td><td align="left">Random distribution class templates</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.7.1</td><td align="left">Class template <code class="code">uniform_int</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.7.2</td><td align="left">Class <code class="code">bernoulli_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.7.3</td><td align="left">Class template <code class="code">geometric_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.7.4</td><td align="left">Class template <code class="code">poisson_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.7.5</td><td align="left">Class template <code class="code">binomial_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.7.6</td><td align="left">Class template <code class="code">uniform_real</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.7.7</td><td align="left">Class template <code class="code">exponential_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.7.8</td><td align="left">Class template <code class="code">normal_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.1.7.9</td><td align="left">Class template <code class="code">gamma_distribution</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2</td><td align="left">Mathematical special functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1</td><td align="left">Additions to header <code class="code"><cmath></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.1</td><td align="left">associated Laguerre polynomials</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.2</td><td align="left">associated Legendre functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.3</td><td align="left">beta function</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.4</td><td align="left">(complete) elliptic integral of the first kind</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.5</td><td align="left">(complete) elliptic integral of the second kind</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.6</td><td align="left">(complete) elliptic integral of the third kind</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.7</td><td align="left">confluent hypergeometric functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.8</td><td align="left">regular modified cylindrical Bessel functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.9</td><td align="left">cylindrical Bessel functions (of the first kind)</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.10</td><td align="left">irregular modified cylindrical Bessel functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.11</td><td align="left">cylindrical Neumann functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.12</td><td align="left">(incomplete) elliptic integral of the first kind</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.13</td><td align="left">(incomplete) elliptic integral of the second kind</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.14</td><td align="left">(incomplete) elliptic integral of the third kind</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.15</td><td align="left">exponential integral</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.16</td><td align="left">Hermite polynomials</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.17</td><td align="left">hypergeometric functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.18</td><td align="left">Laguerre polynomials</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.19</td><td align="left">Legendre polynomials</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.20</td><td align="left">Riemann zeta function</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.21</td><td align="left">spherical Bessel functions (of the first kind)</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.22</td><td align="left">spherical associated Legendre functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.1.23</td><td align="left">spherical Neumann functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">5.2.2</td><td align="left">Additions to header <code class="code"><math.h></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"><span class="emphasis"><em>6</em></span></td><td colspan="3" align="left"><span class="emphasis"><em>Containers</em></span></td></tr><tr><td align="left">6.1</td><td align="left">Tuple types</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.1.1</td><td align="left">Header <code class="code"><tuple></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.1.2</td><td align="left">Additions to header <code class="code"><utility></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.1.3</td><td align="left">Class template <code class="code">tuple</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.1.3.1</td><td align="left">Construction</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.1.3.2</td><td align="left">Tuple creation functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.1.3.3</td><td align="left">Tuple helper classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.1.3.4</td><td align="left">Element access</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.1.3.5</td><td align="left">Relational operators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.1.4</td><td align="left">Pairs</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.2</td><td align="left">Fixed size array</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.2.1</td><td align="left">Header <code class="code"><array></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.2.2</td><td align="left">Class template <code class="code">array</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.2.2.1</td><td align="left"><code class="code">array</code> constructors, copy, and assignment</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.2.2.2</td><td align="left"><code class="code">array</code> specialized algorithms</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.2.2.3</td><td align="left"><code class="code">array</code> size</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.2.2.4</td><td align="left">Zero sized <code class="code">array</code>s</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.2.2.5</td><td align="left">Tuple interface to class template <code class="code">array</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3</td><td align="left">Unordered associative containers</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.1</td><td align="left">Unordered associative container requirements</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.1.1</td><td align="left">Exception safety guarantees</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.2</td><td align="left">Additions to header <code class="code"><functional></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.3</td><td align="left">Class template <code class="code">hash</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4</td><td align="left">Unordered associative container classes</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.1</td><td align="left">Header <code class="code"><unordered_set></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.2</td><td align="left">Header <code class="code"><unordered_map></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.3</td><td align="left">Class template <code class="code">unordered_set</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.3.1</td><td align="left"><code class="code">unordered_set</code> constructors</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.3.2</td><td align="left"><code class="code">unordered_set</code> swap</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.4</td><td align="left">Class template <code class="code">unordered_map</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.4.1</td><td align="left"><code class="code">unordered_map</code> constructors</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.4.2</td><td align="left"><code class="code">unordered_map</code> element access</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.4.3</td><td align="left"><code class="code">unordered_map</code> swap</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.5</td><td align="left">Class template <code class="code">unordered_multiset</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.5.1</td><td align="left"><code class="code">unordered_multiset</code> constructors</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.5.2</td><td align="left"><code class="code">unordered_multiset</code> swap</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.6</td><td align="left">Class template <code class="code">unordered_multimap</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.6.1</td><td align="left"><code class="code">unordered_multimap</code> constructors</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">6.3.4.6.2</td><td align="left"><code class="code">unordered_multimap</code> swap</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left"><span class="emphasis"><em>7</em></span></td><td colspan="3" align="left"><span class="emphasis"><em>Regular Expressions</em></span></td></tr><tr bgcolor="#C8B0B0"><td align="left">7.1</td><td align="left">Definitions</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.2</td><td align="left">Requirements</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.3</td><td align="left">Regular expressions summary</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.4</td><td align="left">Header <code class="code"><regex></code> synopsis</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.5</td><td align="left">Namespace <code class="code">tr1::regex_constants</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.5.1</td><td align="left">Bitmask Type <code class="code">syntax_option_type</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.5.2</td><td align="left">Bitmask Type <code class="code">regex_constants::match_flag_type</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.5.3</td><td align="left">Implementation defined <code class="code">error_type</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.6</td><td align="left">Class <code class="code">regex_error</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.7</td><td align="left">Class template <code class="code">regex_traits</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.8</td><td align="left">Class template <code class="code">basic_regex</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.8.1</td><td align="left"><code class="code">basic_regex</code> constants</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.8.2</td><td align="left"><code class="code">basic_regex</code> constructors</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.8.3</td><td align="left"><code class="code">basic_regex</code> assign</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.8.4</td><td align="left"><code class="code">basic_regex</code> constant operations</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.8.5</td><td align="left"><code class="code">basic_regex</code> locale</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.8.6</td><td align="left"><code class="code">basic_regex</code> swap</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.8.7</td><td align="left"><code class="code">basic_regex</code> non-member functions</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.8.7.1</td><td align="left"><code class="code">basic_regex</code> non-member swap</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.9</td><td align="left">Class template <code class="code">sub_match</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.9.1</td><td align="left"><code class="code">sub_match</code> members</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.9.2</td><td align="left"><code class="code">sub_match</code> non-member operators</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.10</td><td align="left">Class template <code class="code">match_results</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.10.1</td><td align="left"><code class="code">match_results</code> constructors</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.10.2</td><td align="left"><code class="code">match_results</code> size</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.10.3</td><td align="left"><code class="code">match_results</code> element access</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.10.4</td><td align="left"><code class="code">match_results</code> formatting</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.10.5</td><td align="left"><code class="code">match_results</code> allocator</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.10.6</td><td align="left"><code class="code">match_results</code> swap</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.11</td><td align="left">Regular expression algorithms</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.11.1</td><td align="left">exceptions</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.11.2</td><td align="left"><code class="code">regex_match</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.11.3</td><td align="left"><code class="code">regex_search</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.11.4</td><td align="left"><code class="code">regex_replace</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.12</td><td align="left">Regular expression Iterators</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.12.1</td><td align="left">Class template <code class="code">regex_iterator</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.12.1.1</td><td align="left"><code class="code">regex_iterator</code> constructors</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.12.1.2</td><td align="left"><code class="code">regex_iterator</code> comparisons</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.12.1.3</td><td align="left"><code class="code">regex_iterator</code> dereference</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.12.1.4</td><td align="left"><code class="code">regex_iterator</code> increment</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.12.2</td><td align="left">Class template <code class="code">regex_token_iterator</code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.12.2.1</td><td align="left"><code class="code">regex_token_iterator</code> constructors</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.12.2.2</td><td align="left"><code class="code">regex_token_iterator</code> comparisons</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.12.2.3</td><td align="left"><code class="code">regex_token_iterator</code> dereference</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.12.2.4</td><td align="left"><code class="code">regex_token_iterator</code> increment</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">7.13</td><td align="left">Modified ECMAScript regular expression grammar</td><td align="left">N</td><td align="left"> </td></tr><tr><td align="left"><span class="emphasis"><em>8</em></span></td><td colspan="3" align="left"><span class="emphasis"><em>C Compatibility</em></span></td></tr><tr><td align="left">8.1</td><td align="left">Additions to header <code class="code"><complex></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.1</td><td align="left">Synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.2</td><td align="left">Function <code class="code">acos</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.3</td><td align="left">Function <code class="code">asin</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.4</td><td align="left">Function <code class="code">atan</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.5</td><td align="left">Function <code class="code">acosh</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.6</td><td align="left">Function <code class="code">asinh</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.7</td><td align="left">Function <code class="code">atanh</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.8</td><td align="left">Function <code class="code">fabs</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.9</td><td align="left">Additional Overloads</td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">8.2</td><td align="left">Header <code class="code"><ccomplex></code></td><td align="left">N</td><td align="left">DR 551</td></tr><tr bgcolor="#C8B0B0"><td align="left">8.3</td><td align="left">Header <code class="code"><complex.h></code></td><td align="left">N</td><td align="left">DR 551</td></tr><tr><td align="left">8.4</td><td align="left">Additions to header <code class="code"><cctype></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.4.1</td><td align="left">Synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.4.2</td><td align="left">Function <code class="code">isblank</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.5</td><td align="left">Additions to header <code class="code"><ctype.h></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.6</td><td align="left">Header <code class="code"><cfenv></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.6.1</td><td align="left">Synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.6.2</td><td align="left">Definitions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.7</td><td align="left">Header <code class="code"><fenv.h></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.8</td><td align="left">Additions to header <code class="code"><cfloat></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.9</td><td align="left">Additions to header <code class="code"><float.h></code></td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">8.10</td><td align="left">Additions to header <code class="code"><ios></code></td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">8.10.1</td><td align="left">Synopsis</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">8.10.2</td><td align="left">Function <code class="code">hexfloat</code></td><td align="left">N</td><td align="left"> </td></tr><tr><td align="left">8.11</td><td align="left">Header <code class="code"><cinttypes></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.11.1</td><td align="left">Synopsis</td><td align="left">Y</td><td align="left">DR 557</td></tr><tr><td align="left">8.11.2</td><td align="left">Definitions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.12</td><td align="left">Header <code class="code"><inttypes.h></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.13</td><td align="left">Additions to header <code class="code"><climits></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.14</td><td align="left">Additions to header <code class="code"><limits.h></code></td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">8.15</td><td align="left">Additions to header <code class="code"><locale></code></td><td align="left">N</td><td align="left"> </td></tr><tr><td align="left">8.16</td><td align="left">Additions to header <code class="code"><cmath></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.16.1</td><td align="left">Synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.16.2</td><td align="left">Definitions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.16.3</td><td align="left">Function template definitions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.16.4</td><td align="left">Additional overloads</td><td align="left">Y</td><td align="left">DR 568; DR 550</td></tr><tr><td align="left">8.17</td><td align="left">Additions to header <code class="code"><math.h></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.18</td><td align="left">Additions to header <code class="code"><cstdarg></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.19</td><td align="left">Additions to header <code class="code"><stdarg.h></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.20</td><td align="left">The header <code class="code"><cstdbool></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.21</td><td align="left">The header <code class="code"><stdbool.h></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.22</td><td align="left">The header <code class="code"><cstdint></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.22.1</td><td align="left">Synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.22.2</td><td align="left">Definitions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.23</td><td align="left">The header <code class="code"><stdint.h></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.24</td><td align="left">Additions to header <code class="code"><cstdio></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.24.1</td><td align="left">Synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.24.2</td><td align="left">Definitions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.24.3</td><td align="left">Additional format specifiers</td><td align="left">Y</td><td align="left">C library dependency</td></tr><tr><td align="left">8.24.4</td><td align="left">Additions to header <code class="code"><stdio.h></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.25</td><td align="left">Additions to header <code class="code"><cstdlib></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.25.1</td><td align="left">Synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.25.2</td><td align="left">Definitions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.25.3</td><td align="left">Function <code class="code">abs</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.25.4</td><td align="left">Function <code class="code">div</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.26</td><td align="left">Additions to header <code class="code"><stdlib.h></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.27</td><td align="left">Header <code class="code"><ctgmath></code></td><td align="left">Y</td><td align="left">DR 551</td></tr><tr><td align="left">8.28</td><td align="left">Header <code class="code"><tgmath.h></code></td><td align="left">Y</td><td align="left">DR 551</td></tr><tr><td align="left">8.29</td><td align="left">Additions to header <code class="code"><ctime></code></td><td align="left">Y</td><td align="left">C library dependency</td></tr><tr><td align="left">8.30</td><td align="left">Additions to header <code class="code"><cwchar></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.30.1</td><td align="left">Synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.30.2</td><td align="left">Definitions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.30.3</td><td align="left">Additional wide format specifiers</td><td align="left">Y</td><td align="left">C library dependency</td></tr><tr><td align="left">8.31</td><td align="left">Additions to header <code class="code"><wchar.h></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.32</td><td align="left">Additions to header <code class="code"><cwctype></code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.32.1</td><td align="left">Synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.32.2</td><td align="left">Function <code class="code">iswblank</code></td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.33</td><td align="left">Additions to header <code class="code"><wctype.h></code></td><td align="left">Y</td><td align="left"> </td></tr></tbody></table></div></div><br class="table-break" /><div class="section"><div class="titlepage"><div><div><h4 class="title"><a id="iso.tr1.specific"></a>Implementation Specific Behavior</h4></div></div></div><p>For behaviour which is specified by the 1998 and 2003 standards, |
| see <a class="link" href="status.html#iso.1998.specific" title="Implementation Specific Behavior">C++ 1998/2003 Implementation |
| Specific Behavior</a>. This section documents behaviour which |
| is required by TR1. |
| </p><p> |
| <span class="emphasis"><em>3.6.4 [tr.func.bind.place]/1</em></span> There are 29 |
| placeholders defined and the placeholder types are |
| <code class="literal">Assignable</code>. |
| </p></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="status.iso.tr24733"></a>C++ TR 24733</h3></div></div></div><p> |
| This table is based on the table of contents of |
| ISO/IEC TR 24733:2011, |
| "Extensions for the programming language C++ to support |
| decimal floating-point arithmetic". |
| </p><p> |
| This page describes the TR 24733 support in mainline GCC, not in any |
| particular release. |
| </p><div class="table"><a id="table.decfp_status"></a><p class="title"><strong>Table 1.11. C++ TR 24733 Implementation Status</strong></p><div class="table-contents"><table class="table" summary="C++ TR 24733 Implementation Status" border="1"><colgroup><col align="left" class="c1" /><col align="left" class="c2" /><col align="left" class="c3" /><col align="left" class="c4" /></colgroup><thead><tr><th align="left">Section</th><th align="left">Description</th><th align="left">Status</th><th align="left">Comments</th></tr></thead><tbody><tr><td align="left"> |
| <span class="emphasis"><em>0</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Introduction</em></span> |
| </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>1</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Normative references</em></span> |
| </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>2</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Conventions</em></span> |
| </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>3</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Decimal floating-point types</em></span> |
| </td></tr><tr><td align="left">3.1</td><td align="left">Characteristics of decimal floating-point types</td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">3.2</td><td align="left">Decimal Types</td><td align="left"> </td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">3.2.1</td><td align="left">Class <code class="code">decimal</code> synopsis</td><td align="left">Partial</td><td align="left">Missing declarations for formatted input/output; non-conforming extension for functions converting to integral type</td></tr><tr bgcolor="#B0B0B0"><td align="left">3.2.2</td><td align="left">Class <code class="code">decimal32</code></td><td align="left">Partial</td><td align="left">Missing 3.2.2.5 conversion to integral type; conforming extension for conversion from scalar decimal floating-point</td></tr><tr bgcolor="#B0B0B0"><td align="left">3.2.3</td><td align="left">Class <code class="code">decimal64</code></td><td align="left">Partial</td><td align="left">Missing 3.2.3.5 conversion to integral type; conforming extension for conversion from scalar decimal floating-point</td></tr><tr bgcolor="#B0B0B0"><td align="left">3.2.4</td><td align="left">Class <code class="code">decimal128</code></td><td align="left">Partial</td><td align="left">Missing 3.2.4.5 conversion to integral type; conforming extension for conversion from scalar decimal floating-point</td></tr><tr><td align="left">3.2.5</td><td align="left">Initialization from coefficient and exponent</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.2.6</td><td align="left">Conversion to generic floating-point type</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.2.7</td><td align="left">Unary arithmetic operators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.2.8</td><td align="left">Binary arithmetic operators</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.2.9</td><td align="left">Comparison operators</td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">3.2.10</td><td align="left">Formatted input</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">3.2.11</td><td align="left">Formatted output</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">3.3</td><td align="left">Additions to header <code class="code">limits</code></td><td align="left">N</td><td align="left"> </td></tr><tr><td align="left">3.4</td><td align="left">Headers <code class="code">cfloat</code> and <code class="code">float.h</code></td><td align="left"> </td><td align="left"> </td></tr><tr><td align="left">3.4.2</td><td align="left">Additions to header <code class="code">cfloat</code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">3.4.3</td><td align="left">Additions to header <code class="code">float.h</code> synopsis</td><td align="left">N</td><td align="left"> </td></tr><tr><td align="left">3.4.4</td><td align="left">Maximum finite value</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.4.5</td><td align="left">Epsilon</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.4.6</td><td align="left">Minimum positive normal value</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.4.7</td><td align="left">Minimum positive subnormal value</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">3.4.8</td><td align="left">Evaluation format</td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">3.5</td><td align="left">Additions to <code class="code">cfenv</code> and <code class="code">fenv.h</code></td><td align="left">Outside the scope of GCC</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">3.6</td><td align="left">Additions to <code class="code">cmath</code> and <code class="code">math.h</code></td><td align="left">Outside the scope of GCC</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">3.7</td><td align="left">Additions to <code class="code">cstdio</code> and <code class="code">stdio.h</code></td><td align="left">Outside the scope of GCC</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">3.8</td><td align="left">Additions to <code class="code">cstdlib</code> and <code class="code">stdlib.h</code></td><td align="left">Outside the scope of GCC</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">3.9</td><td align="left">Additions to <code class="code">cwchar</code> and <code class="code">wchar.h</code></td><td align="left">Outside the scope of GCC</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">3.10</td><td align="left">Facets</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">3.11</td><td align="left">Type traits</td><td align="left">N</td><td align="left"> </td></tr><tr bgcolor="#C8B0B0"><td align="left">3.12</td><td align="left">Hash functions</td><td align="left">N</td><td align="left"> </td></tr><tr><td align="left"> |
| <span class="emphasis"><em>4</em></span> |
| </td><td colspan="3" align="left"> |
| <span class="emphasis"><em>Notes on C compatibility</em></span> |
| </td></tr></tbody></table></div></div><br class="table-break" /></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="status.iso.specfun"></a>C++ IS 29124</h3></div></div></div><p> |
| This table is based on the table of contents of ISO/IEC FDIS 29124, |
| Doc No: N3060, Date: 2010-03-06, |
| "Extensions to the C++ Library to support mathematical special functions". |
| </p><p> |
| Complete support for IS 29124 is in GCC 6.1 and later releases, when using |
| at least C++11 (for older releases or C++98/C++03 use TR1 instead). |
| For C++11 and C++14 the additions to the library are not declared by their |
| respective headers unless <code class="code">__STDCPP_WANT_MATH_SPEC_FUNCS__</code> |
| is defined as a macro that expands to a non-zero integer constant. |
| For C++17 the special functions are always declared (since GCC 7.1). |
| </p><p> |
| When the special functions are declared the macro |
| <code class="code">__STDCPP_MATH_SPEC_FUNCS__</code> is defined to <code class="code">201003L</code>. |
| </p><p> |
| In addition to the special functions defined in IS 29124, for |
| non-strict modes (i.e. <code class="code">-std=gnu++NN</code> modes) the |
| hypergeometric functions and confluent hypergeometric functions |
| from TR1 are also provided, defined in namespace |
| <code class="code">__gnu_cxx</code>. |
| </p><div class="table"><a id="table.specfun_status"></a><p class="title"><strong>Table 1.12. C++ Special Functions Implementation Status</strong></p><div class="table-contents"><table class="table" summary="C++ Special Functions Implementation Status" border="1"><colgroup><col align="left" class="c1" /><col align="left" class="c2" /><col align="left" class="c3" /><col align="left" class="c4" /></colgroup><thead><tr><th align="left">Section</th><th align="left">Description</th><th align="left">Status</th><th align="left">Comments</th></tr></thead><tbody><tr bgcolor="#B0B0B0"><td align="left">7</td><td align="left">Macro names</td><td align="left">Partial</td><td align="left">No diagnostic for inconsistent definitions of |
| <code class="code">__STDCPP_WANT_MATH_SPEC_FUNCS__</code></td></tr><tr><td align="left">8</td><td align="left">Mathematical special functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1</td><td align="left">Additions to header <code class="code"><cmath></code> synopsis</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.1</td><td align="left">associated Laguerre polynomials</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.2</td><td align="left">associated Legendre functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.3</td><td align="left">beta function</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.4</td><td align="left">(complete) elliptic integral of the first kind</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.5</td><td align="left">(complete) elliptic integral of the second kind</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.6</td><td align="left">(complete) elliptic integral of the third kind</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.7</td><td align="left">regular modified cylindrical Bessel functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.8</td><td align="left">cylindrical Bessel functions (of the first kind)</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.9</td><td align="left">irregular modified cylindrical Bessel functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.10</td><td align="left">cylindrical Neumann functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.11</td><td align="left">(incomplete) elliptic integral of the first kind</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.12</td><td align="left">(incomplete) elliptic integral of the second kind</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.13</td><td align="left">(incomplete) elliptic integral of the third kind</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.14</td><td align="left">exponential integral</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.15</td><td align="left">Hermite polynomials</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.16</td><td align="left">Laguerre polynomials</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.17</td><td align="left">Legendre polynomials</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.18</td><td align="left">Riemann zeta function</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.19</td><td align="left">spherical Bessel functions (of the first kind)</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.20</td><td align="left">spherical associated Legendre functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.1.21</td><td align="left">spherical Neumann functions</td><td align="left">Y</td><td align="left"> </td></tr><tr><td align="left">8.2</td><td align="left">Additions to header <code class="code"><math.h></code></td><td align="left">Y</td><td align="left"> </td></tr><tr bgcolor="#B0B0B0"><td align="left">8.3</td><td align="left">The header <code class="code"><ctgmath></code></td><td align="left">Partial</td><td align="left">Conflicts with C++ 2011 requirements.</td></tr><tr bgcolor="#C8B0B0"><td align="left">8.4</td><td align="left">The header <code class="code"><tgmath.h></code></td><td align="left">N</td><td align="left">Conflicts with C++ 2011 requirements.</td></tr></tbody></table></div></div><br class="table-break" /><div class="section"><div class="titlepage"><div><div><h4 class="title"><a id="iso.specfun.specific"></a>Implementation Specific Behavior</h4></div></div></div><p>For behaviour which is specified by the 2011 standard, |
| see <a class="link" href="status.html#iso.2011.specific" title="Implementation Specific Behavior">C++ 2011 Implementation |
| Specific Behavior</a>. This section documents behaviour which |
| is required by IS 29124. |
| </p><p> |
| <span class="emphasis"><em>7.2 [macro.user]/3 /4</em></span> The functions declared in |
| Clause 8 are only declared when |
| <code class="code">__STDCPP_WANT_MATH_SPEC_FUNCS__ == 1</code> |
| (or in C++17 mode, for GCC 7.1 and later). |
| </p><p> |
| <span class="emphasis"><em>8.1.1 [sf.cmath.Lnm]/1</em></span> The effect of calling |
| these functions with <code class="code">n >= 128</code> or <code class="code">m >= 128</code> |
| should be described here. |
| </p><p> |
| <span class="emphasis"><em>8.1.2 [sf.cmath.Plm]/3</em></span> The effect of calling |
| these functions with <code class="code">l >= 128</code> should be described here. |
| </p><p> |
| <span class="emphasis"><em>8.1.3 [sf.cmath.I]/3</em></span> The effect of calling |
| these functions with <code class="code">nu >= 128</code> should be described here. |
| </p><p> |
| <span class="emphasis"><em>8.1.8 [sf.cmath.J]/3</em></span> The effect of calling |
| these functions with <code class="code">nu >= 128</code> should be described here. |
| </p><p> |
| <span class="emphasis"><em>8.1.9 [sf.cmath.K]/3</em></span> The effect of calling |
| these functions with <code class="code">nu >= 128</code> should be described here. |
| </p><p> |
| <span class="emphasis"><em>8.1.10 [sf.cmath.N]/3</em></span> The effect of calling |
| these functions with <code class="code">nu >= 128</code> should be described here. |
| </p><p> |
| <span class="emphasis"><em>8.1.15 [sf.cmath.Hn]/3</em></span> The effect of calling |
| these functions with <code class="code">n >= 128</code> should be described here. |
| </p><p> |
| <span class="emphasis"><em>8.1.16 [sf.cmath.Ln]/3</em></span> The effect of calling |
| these functions with <code class="code">n >= 128</code> should be described here. |
| </p><p> |
| <span class="emphasis"><em>8.1.17 [sf.cmath.Pl]/3</em></span> The effect of calling |
| these functions with <code class="code">l >= 128</code> should be described here. |
| </p><p> |
| <span class="emphasis"><em>8.1.19 [sf.cmath.j]/3</em></span> The effect of calling |
| these functions with <code class="code">n >= 128</code> should be described here. |
| </p><p> |
| <span class="emphasis"><em>8.1.20 [sf.cmath.Ylm]/3</em></span> The effect of calling |
| these functions with <code class="code">l >= 128</code> should be described here. |
| </p><p> |
| <span class="emphasis"><em>8.1.21 [sf.cmath.n]/3</em></span> The effect of calling |
| these functions with <code class="code">n >= 128</code> should be described here. |
| </p></div></div></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="intro.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="intro.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="license.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Part I. |
| Introduction |
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