| <?xml version="1.0" encoding="UTF-8" standalone="no"?> |
| <!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 12. Numerics</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="std_contents.html" title="Part II. Standard Contents" /><link rel="prev" href="algorithms.html" title="Chapter 11. Algorithms" /><link rel="next" href="generalized_numeric_operations.html" title="Generalized Operations" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 12. |
| Numerics |
| |
| </th></tr><tr><td width="20%" align="left"><a accesskey="p" href="algorithms.html">Prev</a> </td><th width="60%" align="center">Part II. |
| Standard Contents |
| </th><td width="20%" align="right"> <a accesskey="n" href="generalized_numeric_operations.html">Next</a></td></tr></table><hr /></div><div class="chapter"><div class="titlepage"><div><div><h2 class="title"><a id="std.numerics"></a>Chapter 12. |
| Numerics |
| <a id="id-1.3.4.10.1.1.1" class="indexterm"></a> |
| </h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl class="toc"><dt><span class="section"><a href="numerics.html#std.numerics.complex">Complex</a></span></dt><dd><dl><dt><span class="section"><a href="numerics.html#numerics.complex.processing">complex Processing</a></span></dt></dl></dd><dt><span class="section"><a href="generalized_numeric_operations.html">Generalized Operations</a></span></dt><dt><span class="section"><a href="numerics_and_c.html">Interacting with C</a></span></dt><dd><dl><dt><span class="section"><a href="numerics_and_c.html#numerics.c.array">Numerics vs. Arrays</a></span></dt><dt><span class="section"><a href="numerics_and_c.html#numerics.c.c99">C99</a></span></dt></dl></dd></dl></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="std.numerics.complex"></a>Complex</h2></div></div></div><p> |
| </p><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="numerics.complex.processing"></a>complex Processing</h3></div></div></div><p> |
| </p><p>Using <code class="code">complex<></code> becomes even more comple- er, sorry, |
| <span class="emphasis"><em>complicated</em></span>, with the not-quite-gratuitously-incompatible |
| addition of complex types to the C language. David Tribble has |
| compiled a list of C++98 and C99 conflict points; his description of |
| C's new type versus those of C++ and how to get them playing together |
| nicely is |
| <a class="link" href="http://david.tribble.com/text/cdiffs.htm#C99-complex" target="_top">here</a>. |
| </p><p><code class="code">complex<></code> is intended to be instantiated with a |
| floating-point type. As long as you meet that and some other basic |
| requirements, then the resulting instantiation has all of the usual |
| math operators defined, as well as definitions of <code class="code">op<<</code> |
| and <code class="code">op>></code> that work with iostreams: <code class="code">op<<</code> |
| prints <code class="code">(u,v)</code> and <code class="code">op>></code> can read <code class="code">u</code>, |
| <code class="code">(u)</code>, and <code class="code">(u,v)</code>. |
| </p><p>As an extension to C++11 and for increased compatibility with C, |
| <code class="code"><complex.h></code> includes both <code class="code"><complex></code> |
| and the C99 <code class="code"><complex.h></code> (if the C library provides |
| it). |
| </p></div></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="algorithms.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="std_contents.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="generalized_numeric_operations.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 11. |
| Algorithms |
| |
| </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Generalized Operations</td></tr></table></div></body></html> |
