| // <chrono> -*- C++ -*- |
| |
| // Copyright (C) 2008-2021 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 3, or (at your option) |
| // any later version. |
| |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // Under Section 7 of GPL version 3, you are granted additional |
| // permissions described in the GCC Runtime Library Exception, version |
| // 3.1, as published by the Free Software Foundation. |
| |
| // You should have received a copy of the GNU General Public License and |
| // a copy of the GCC Runtime Library Exception along with this program; |
| // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| // <http://www.gnu.org/licenses/>. |
| |
| /** @file include/chrono |
| * This is a Standard C++ Library header. |
| * @ingroup chrono |
| */ |
| |
| #ifndef _GLIBCXX_CHRONO |
| #define _GLIBCXX_CHRONO 1 |
| |
| #pragma GCC system_header |
| |
| #if __cplusplus < 201103L |
| # include <bits/c++0x_warning.h> |
| #else |
| |
| #include <ratio> |
| #include <type_traits> |
| #include <limits> |
| #include <ctime> |
| #include <bits/parse_numbers.h> // for literals support. |
| #if __cplusplus > 201703L |
| # include <concepts> |
| # include <compare> |
| #endif |
| |
| namespace std _GLIBCXX_VISIBILITY(default) |
| { |
| _GLIBCXX_BEGIN_NAMESPACE_VERSION |
| |
| #if __cplusplus >= 201703L |
| namespace filesystem { struct __file_clock; }; |
| #endif |
| |
| /** |
| * @defgroup chrono Time |
| * @ingroup utilities |
| * |
| * Classes and functions for time. |
| * @{ |
| */ |
| |
| /** @namespace std::chrono |
| * @brief ISO C++ 2011 namespace for date and time utilities |
| */ |
| namespace chrono |
| { |
| template<typename _Rep, typename _Period = ratio<1>> |
| struct duration; |
| |
| template<typename _Clock, typename _Dur = typename _Clock::duration> |
| struct time_point; |
| } |
| |
| // 20.11.4.3 specialization of common_type (for duration, sfinae-friendly) |
| |
| /// @cond undocumented |
| |
| template<typename _CT, typename _Period1, typename _Period2, typename = void> |
| struct __duration_common_type |
| { }; |
| |
| template<typename _CT, typename _Period1, typename _Period2> |
| struct __duration_common_type<_CT, _Period1, _Period2, |
| __void_t<typename _CT::type>> |
| { |
| private: |
| using __gcd_num = __static_gcd<_Period1::num, _Period2::num>; |
| using __gcd_den = __static_gcd<_Period1::den, _Period2::den>; |
| using __cr = typename _CT::type; |
| using __r = ratio<__gcd_num::value, |
| (_Period1::den / __gcd_den::value) * _Period2::den>; |
| |
| public: |
| using type = chrono::duration<__cr, typename __r::type>; |
| }; |
| |
| /// @endcond |
| |
| /// Specialization of common_type for chrono::duration types. |
| /// @relates duration |
| template<typename _Rep1, typename _Period1, typename _Rep2, typename _Period2> |
| struct common_type<chrono::duration<_Rep1, _Period1>, |
| chrono::duration<_Rep2, _Period2>> |
| : __duration_common_type<common_type<_Rep1, _Rep2>, |
| typename _Period1::type, |
| typename _Period2::type> |
| { }; |
| |
| /// Specialization of common_type for two identical chrono::duration types. |
| /// @relates duration |
| template<typename _Rep, typename _Period> |
| struct common_type<chrono::duration<_Rep, _Period>, |
| chrono::duration<_Rep, _Period>> |
| { |
| using type = chrono::duration<typename common_type<_Rep>::type, |
| typename _Period::type>; |
| }; |
| |
| /// Specialization of common_type for one chrono::duration type. |
| /// @relates duration |
| template<typename _Rep, typename _Period> |
| struct common_type<chrono::duration<_Rep, _Period>> |
| { |
| using type = chrono::duration<typename common_type<_Rep>::type, |
| typename _Period::type>; |
| }; |
| |
| // 20.11.4.3 specialization of common_type (for time_point, sfinae-friendly) |
| |
| /// @cond undocumented |
| |
| template<typename _CT, typename _Clock, typename = void> |
| struct __timepoint_common_type |
| { }; |
| |
| template<typename _CT, typename _Clock> |
| struct __timepoint_common_type<_CT, _Clock, __void_t<typename _CT::type>> |
| { |
| using type = chrono::time_point<_Clock, typename _CT::type>; |
| }; |
| |
| /// @endcond |
| |
| /// Specialization of common_type for chrono::time_point types. |
| /// @relates time_point |
| template<typename _Clock, typename _Duration1, typename _Duration2> |
| struct common_type<chrono::time_point<_Clock, _Duration1>, |
| chrono::time_point<_Clock, _Duration2>> |
| : __timepoint_common_type<common_type<_Duration1, _Duration2>, _Clock> |
| { }; |
| |
| /// Specialization of common_type for two identical chrono::time_point types. |
| /// @relates time_point |
| template<typename _Clock, typename _Duration> |
| struct common_type<chrono::time_point<_Clock, _Duration>, |
| chrono::time_point<_Clock, _Duration>> |
| { using type = chrono::time_point<_Clock, _Duration>; }; |
| |
| /// Specialization of common_type for one chrono::time_point type. |
| /// @relates time_point |
| template<typename _Clock, typename _Duration> |
| struct common_type<chrono::time_point<_Clock, _Duration>> |
| { using type = chrono::time_point<_Clock, _Duration>; }; |
| |
| /// @} group chrono |
| |
| namespace chrono |
| { |
| /// @addtogroup chrono |
| /// @{ |
| |
| /// @cond undocumented |
| |
| // Primary template for duration_cast impl. |
| template<typename _ToDur, typename _CF, typename _CR, |
| bool _NumIsOne = false, bool _DenIsOne = false> |
| struct __duration_cast_impl |
| { |
| template<typename _Rep, typename _Period> |
| static constexpr _ToDur |
| __cast(const duration<_Rep, _Period>& __d) |
| { |
| typedef typename _ToDur::rep __to_rep; |
| return _ToDur(static_cast<__to_rep>(static_cast<_CR>(__d.count()) |
| * static_cast<_CR>(_CF::num) |
| / static_cast<_CR>(_CF::den))); |
| } |
| }; |
| |
| template<typename _ToDur, typename _CF, typename _CR> |
| struct __duration_cast_impl<_ToDur, _CF, _CR, true, true> |
| { |
| template<typename _Rep, typename _Period> |
| static constexpr _ToDur |
| __cast(const duration<_Rep, _Period>& __d) |
| { |
| typedef typename _ToDur::rep __to_rep; |
| return _ToDur(static_cast<__to_rep>(__d.count())); |
| } |
| }; |
| |
| template<typename _ToDur, typename _CF, typename _CR> |
| struct __duration_cast_impl<_ToDur, _CF, _CR, true, false> |
| { |
| template<typename _Rep, typename _Period> |
| static constexpr _ToDur |
| __cast(const duration<_Rep, _Period>& __d) |
| { |
| typedef typename _ToDur::rep __to_rep; |
| return _ToDur(static_cast<__to_rep>( |
| static_cast<_CR>(__d.count()) / static_cast<_CR>(_CF::den))); |
| } |
| }; |
| |
| template<typename _ToDur, typename _CF, typename _CR> |
| struct __duration_cast_impl<_ToDur, _CF, _CR, false, true> |
| { |
| template<typename _Rep, typename _Period> |
| static constexpr _ToDur |
| __cast(const duration<_Rep, _Period>& __d) |
| { |
| typedef typename _ToDur::rep __to_rep; |
| return _ToDur(static_cast<__to_rep>( |
| static_cast<_CR>(__d.count()) * static_cast<_CR>(_CF::num))); |
| } |
| }; |
| |
| template<typename _Tp> |
| struct __is_duration |
| : std::false_type |
| { }; |
| |
| template<typename _Rep, typename _Period> |
| struct __is_duration<duration<_Rep, _Period>> |
| : std::true_type |
| { }; |
| |
| template<typename _Tp> |
| using __enable_if_is_duration |
| = typename enable_if<__is_duration<_Tp>::value, _Tp>::type; |
| |
| template<typename _Tp> |
| using __disable_if_is_duration |
| = typename enable_if<!__is_duration<_Tp>::value, _Tp>::type; |
| |
| /// @endcond |
| |
| /// duration_cast |
| template<typename _ToDur, typename _Rep, typename _Period> |
| constexpr __enable_if_is_duration<_ToDur> |
| duration_cast(const duration<_Rep, _Period>& __d) |
| { |
| typedef typename _ToDur::period __to_period; |
| typedef typename _ToDur::rep __to_rep; |
| typedef ratio_divide<_Period, __to_period> __cf; |
| typedef typename common_type<__to_rep, _Rep, intmax_t>::type |
| __cr; |
| typedef __duration_cast_impl<_ToDur, __cf, __cr, |
| __cf::num == 1, __cf::den == 1> __dc; |
| return __dc::__cast(__d); |
| } |
| |
| /// treat_as_floating_point |
| template<typename _Rep> |
| struct treat_as_floating_point |
| : is_floating_point<_Rep> |
| { }; |
| |
| #if __cplusplus > 201402L |
| template <typename _Rep> |
| inline constexpr bool treat_as_floating_point_v = |
| treat_as_floating_point<_Rep>::value; |
| #endif // C++17 |
| |
| #if __cplusplus > 201703L |
| template<typename _Tp> |
| struct is_clock; |
| |
| template<typename _Tp> |
| inline constexpr bool is_clock_v = is_clock<_Tp>::value; |
| |
| #if __cpp_lib_concepts |
| template<typename _Tp> |
| struct is_clock : false_type |
| { }; |
| |
| template<typename _Tp> |
| requires requires { |
| typename _Tp::rep; |
| typename _Tp::period; |
| typename _Tp::duration; |
| typename _Tp::time_point::clock; |
| typename _Tp::time_point::duration; |
| { &_Tp::is_steady } -> same_as<const bool*>; |
| { _Tp::now() } -> same_as<typename _Tp::time_point>; |
| requires same_as<typename _Tp::duration, |
| duration<typename _Tp::rep, typename _Tp::period>>; |
| requires same_as<typename _Tp::time_point::duration, |
| typename _Tp::duration>; |
| } |
| struct is_clock<_Tp> : true_type |
| { }; |
| #else |
| template<typename _Tp, typename = void> |
| struct __is_clock_impl : false_type |
| { }; |
| |
| template<typename _Tp> |
| struct __is_clock_impl<_Tp, |
| void_t<typename _Tp::rep, typename _Tp::period, |
| typename _Tp::duration, |
| typename _Tp::time_point::duration, |
| decltype(_Tp::is_steady), |
| decltype(_Tp::now())>> |
| : __and_<is_same<typename _Tp::duration, |
| duration<typename _Tp::rep, typename _Tp::period>>, |
| is_same<typename _Tp::time_point::duration, |
| typename _Tp::duration>, |
| is_same<decltype(&_Tp::is_steady), const bool*>, |
| is_same<decltype(_Tp::now()), typename _Tp::time_point>>::type |
| { }; |
| |
| template<typename _Tp> |
| struct is_clock : __is_clock_impl<_Tp>::type |
| { }; |
| #endif |
| #endif // C++20 |
| |
| #if __cplusplus >= 201703L |
| # define __cpp_lib_chrono 201611 |
| |
| template<typename _ToDur, typename _Rep, typename _Period> |
| constexpr __enable_if_is_duration<_ToDur> |
| floor(const duration<_Rep, _Period>& __d) |
| { |
| auto __to = chrono::duration_cast<_ToDur>(__d); |
| if (__to > __d) |
| return __to - _ToDur{1}; |
| return __to; |
| } |
| |
| template<typename _ToDur, typename _Rep, typename _Period> |
| constexpr __enable_if_is_duration<_ToDur> |
| ceil(const duration<_Rep, _Period>& __d) |
| { |
| auto __to = chrono::duration_cast<_ToDur>(__d); |
| if (__to < __d) |
| return __to + _ToDur{1}; |
| return __to; |
| } |
| |
| template <typename _ToDur, typename _Rep, typename _Period> |
| constexpr enable_if_t< |
| __and_<__is_duration<_ToDur>, |
| __not_<treat_as_floating_point<typename _ToDur::rep>>>::value, |
| _ToDur> |
| round(const duration<_Rep, _Period>& __d) |
| { |
| _ToDur __t0 = chrono::floor<_ToDur>(__d); |
| _ToDur __t1 = __t0 + _ToDur{1}; |
| auto __diff0 = __d - __t0; |
| auto __diff1 = __t1 - __d; |
| if (__diff0 == __diff1) |
| { |
| if (__t0.count() & 1) |
| return __t1; |
| return __t0; |
| } |
| else if (__diff0 < __diff1) |
| return __t0; |
| return __t1; |
| } |
| |
| template<typename _Rep, typename _Period> |
| constexpr |
| enable_if_t<numeric_limits<_Rep>::is_signed, duration<_Rep, _Period>> |
| abs(duration<_Rep, _Period> __d) |
| { |
| if (__d >= __d.zero()) |
| return __d; |
| return -__d; |
| } |
| |
| // Make chrono::ceil<D> also usable as chrono::__detail::ceil<D>. |
| namespace __detail { using chrono::ceil; } |
| |
| #else // ! C++17 |
| |
| // We want to use ceil even when compiling for earlier standards versions. |
| // C++11 only allows a single statement in a constexpr function, so we |
| // need to move the comparison into a separate function, __ceil_impl. |
| namespace __detail |
| { |
| template<typename _Tp, typename _Up> |
| constexpr _Tp |
| __ceil_impl(const _Tp& __t, const _Up& __u) |
| { |
| return (__t < __u) ? (__t + _Tp{1}) : __t; |
| } |
| |
| // C++11-friendly version of std::chrono::ceil<D> for internal use. |
| template<typename _ToDur, typename _Rep, typename _Period> |
| constexpr _ToDur |
| ceil(const duration<_Rep, _Period>& __d) |
| { |
| return __detail::__ceil_impl(chrono::duration_cast<_ToDur>(__d), __d); |
| } |
| } |
| #endif // C++17 |
| |
| /// duration_values |
| template<typename _Rep> |
| struct duration_values |
| { |
| static constexpr _Rep |
| zero() noexcept |
| { return _Rep(0); } |
| |
| static constexpr _Rep |
| max() noexcept |
| { return numeric_limits<_Rep>::max(); } |
| |
| static constexpr _Rep |
| min() noexcept |
| { return numeric_limits<_Rep>::lowest(); } |
| }; |
| |
| /// @cond undocumented |
| |
| template<typename _Tp> |
| struct __is_ratio |
| : std::false_type |
| { }; |
| |
| template<intmax_t _Num, intmax_t _Den> |
| struct __is_ratio<ratio<_Num, _Den>> |
| : std::true_type |
| { }; |
| |
| /// @endcond |
| |
| /// duration |
| template<typename _Rep, typename _Period> |
| struct duration |
| { |
| private: |
| template<typename _Rep2> |
| using __is_float = treat_as_floating_point<_Rep2>; |
| |
| static constexpr intmax_t |
| _S_gcd(intmax_t __m, intmax_t __n) noexcept |
| { |
| // Duration only allows positive periods so we don't need to |
| // handle negative values here (unlike __static_gcd and std::gcd). |
| #if __cplusplus >= 201402L |
| do |
| { |
| intmax_t __rem = __m % __n; |
| __m = __n; |
| __n = __rem; |
| } |
| while (__n != 0); |
| return __m; |
| #else |
| // C++11 doesn't allow loops in constexpr functions, but this |
| // recursive version can be more expensive to evaluate. |
| return (__n == 0) ? __m : _S_gcd(__n, __m % __n); |
| #endif |
| } |
| |
| // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| // 2094. overflow shouldn't participate in overload resolution |
| // 3090. What is [2094] intended to mean? |
| // This only produces a valid type if no overflow occurs. |
| template<typename _R1, typename _R2, |
| intmax_t __gcd1 = _S_gcd(_R1::num, _R2::num), |
| intmax_t __gcd2 = _S_gcd(_R1::den, _R2::den)> |
| using __divide = ratio<(_R1::num / __gcd1) * (_R2::den / __gcd2), |
| (_R1::den / __gcd2) * (_R2::num / __gcd1)>; |
| |
| // _Period2 is an exact multiple of _Period |
| template<typename _Period2> |
| using __is_harmonic |
| = __bool_constant<__divide<_Period2, _Period>::den == 1>; |
| |
| public: |
| |
| using rep = _Rep; |
| using period = typename _Period::type; |
| |
| static_assert(!__is_duration<_Rep>::value, "rep cannot be a duration"); |
| static_assert(__is_ratio<_Period>::value, |
| "period must be a specialization of ratio"); |
| static_assert(_Period::num > 0, "period must be positive"); |
| |
| // 20.11.5.1 construction / copy / destroy |
| constexpr duration() = default; |
| |
| duration(const duration&) = default; |
| |
| // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| // 3050. Conversion specification problem in chrono::duration |
| template<typename _Rep2, typename = _Require< |
| is_convertible<const _Rep2&, rep>, |
| __or_<__is_float<rep>, __not_<__is_float<_Rep2>>>>> |
| constexpr explicit duration(const _Rep2& __rep) |
| : __r(static_cast<rep>(__rep)) { } |
| |
| template<typename _Rep2, typename _Period2, typename = _Require< |
| is_convertible<const _Rep2&, rep>, |
| __or_<__is_float<rep>, |
| __and_<__is_harmonic<_Period2>, |
| __not_<__is_float<_Rep2>>>>>> |
| constexpr duration(const duration<_Rep2, _Period2>& __d) |
| : __r(duration_cast<duration>(__d).count()) { } |
| |
| ~duration() = default; |
| duration& operator=(const duration&) = default; |
| |
| // 20.11.5.2 observer |
| constexpr rep |
| count() const |
| { return __r; } |
| |
| // 20.11.5.3 arithmetic |
| |
| constexpr duration<typename common_type<rep>::type, period> |
| operator+() const |
| { return duration<typename common_type<rep>::type, period>(__r); } |
| |
| constexpr duration<typename common_type<rep>::type, period> |
| operator-() const |
| { return duration<typename common_type<rep>::type, period>(-__r); } |
| |
| _GLIBCXX17_CONSTEXPR duration& |
| operator++() |
| { |
| ++__r; |
| return *this; |
| } |
| |
| _GLIBCXX17_CONSTEXPR duration |
| operator++(int) |
| { return duration(__r++); } |
| |
| _GLIBCXX17_CONSTEXPR duration& |
| operator--() |
| { |
| --__r; |
| return *this; |
| } |
| |
| _GLIBCXX17_CONSTEXPR duration |
| operator--(int) |
| { return duration(__r--); } |
| |
| _GLIBCXX17_CONSTEXPR duration& |
| operator+=(const duration& __d) |
| { |
| __r += __d.count(); |
| return *this; |
| } |
| |
| _GLIBCXX17_CONSTEXPR duration& |
| operator-=(const duration& __d) |
| { |
| __r -= __d.count(); |
| return *this; |
| } |
| |
| _GLIBCXX17_CONSTEXPR duration& |
| operator*=(const rep& __rhs) |
| { |
| __r *= __rhs; |
| return *this; |
| } |
| |
| _GLIBCXX17_CONSTEXPR duration& |
| operator/=(const rep& __rhs) |
| { |
| __r /= __rhs; |
| return *this; |
| } |
| |
| // DR 934. |
| template<typename _Rep2 = rep> |
| _GLIBCXX17_CONSTEXPR |
| typename enable_if<!treat_as_floating_point<_Rep2>::value, |
| duration&>::type |
| operator%=(const rep& __rhs) |
| { |
| __r %= __rhs; |
| return *this; |
| } |
| |
| template<typename _Rep2 = rep> |
| _GLIBCXX17_CONSTEXPR |
| typename enable_if<!treat_as_floating_point<_Rep2>::value, |
| duration&>::type |
| operator%=(const duration& __d) |
| { |
| __r %= __d.count(); |
| return *this; |
| } |
| |
| // 20.11.5.4 special values |
| static constexpr duration |
| zero() noexcept |
| { return duration(duration_values<rep>::zero()); } |
| |
| static constexpr duration |
| min() noexcept |
| { return duration(duration_values<rep>::min()); } |
| |
| static constexpr duration |
| max() noexcept |
| { return duration(duration_values<rep>::max()); } |
| |
| private: |
| rep __r; |
| }; |
| |
| /// @relates duration @{ |
| |
| /// The sum of two durations. |
| template<typename _Rep1, typename _Period1, |
| typename _Rep2, typename _Period2> |
| constexpr typename common_type<duration<_Rep1, _Period1>, |
| duration<_Rep2, _Period2>>::type |
| operator+(const duration<_Rep1, _Period1>& __lhs, |
| const duration<_Rep2, _Period2>& __rhs) |
| { |
| typedef duration<_Rep1, _Period1> __dur1; |
| typedef duration<_Rep2, _Period2> __dur2; |
| typedef typename common_type<__dur1,__dur2>::type __cd; |
| return __cd(__cd(__lhs).count() + __cd(__rhs).count()); |
| } |
| |
| /// The difference between two durations. |
| template<typename _Rep1, typename _Period1, |
| typename _Rep2, typename _Period2> |
| constexpr typename common_type<duration<_Rep1, _Period1>, |
| duration<_Rep2, _Period2>>::type |
| operator-(const duration<_Rep1, _Period1>& __lhs, |
| const duration<_Rep2, _Period2>& __rhs) |
| { |
| typedef duration<_Rep1, _Period1> __dur1; |
| typedef duration<_Rep2, _Period2> __dur2; |
| typedef typename common_type<__dur1,__dur2>::type __cd; |
| return __cd(__cd(__lhs).count() - __cd(__rhs).count()); |
| } |
| |
| /// @} |
| |
| /// @cond undocumented |
| |
| // SFINAE helper to obtain common_type<_Rep1, _Rep2> only if _Rep2 |
| // is implicitly convertible to it. |
| // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| // 3050. Conversion specification problem in chrono::duration constructor |
| template<typename _Rep1, typename _Rep2, |
| typename _CRep = typename common_type<_Rep1, _Rep2>::type> |
| using __common_rep_t = typename |
| enable_if<is_convertible<const _Rep2&, _CRep>::value, _CRep>::type; |
| |
| /// @endcond |
| |
| /// @relates duration @{ |
| |
| /// Multiply a duration by a scalar value. |
| template<typename _Rep1, typename _Period, typename _Rep2> |
| constexpr duration<__common_rep_t<_Rep1, _Rep2>, _Period> |
| operator*(const duration<_Rep1, _Period>& __d, const _Rep2& __s) |
| { |
| typedef duration<typename common_type<_Rep1, _Rep2>::type, _Period> |
| __cd; |
| return __cd(__cd(__d).count() * __s); |
| } |
| |
| /// Multiply a duration by a scalar value. |
| template<typename _Rep1, typename _Rep2, typename _Period> |
| constexpr duration<__common_rep_t<_Rep2, _Rep1>, _Period> |
| operator*(const _Rep1& __s, const duration<_Rep2, _Period>& __d) |
| { return __d * __s; } |
| |
| template<typename _Rep1, typename _Period, typename _Rep2> |
| constexpr |
| duration<__common_rep_t<_Rep1, __disable_if_is_duration<_Rep2>>, _Period> |
| operator/(const duration<_Rep1, _Period>& __d, const _Rep2& __s) |
| { |
| typedef duration<typename common_type<_Rep1, _Rep2>::type, _Period> |
| __cd; |
| return __cd(__cd(__d).count() / __s); |
| } |
| |
| template<typename _Rep1, typename _Period1, |
| typename _Rep2, typename _Period2> |
| constexpr typename common_type<_Rep1, _Rep2>::type |
| operator/(const duration<_Rep1, _Period1>& __lhs, |
| const duration<_Rep2, _Period2>& __rhs) |
| { |
| typedef duration<_Rep1, _Period1> __dur1; |
| typedef duration<_Rep2, _Period2> __dur2; |
| typedef typename common_type<__dur1,__dur2>::type __cd; |
| return __cd(__lhs).count() / __cd(__rhs).count(); |
| } |
| |
| // DR 934. |
| template<typename _Rep1, typename _Period, typename _Rep2> |
| constexpr |
| duration<__common_rep_t<_Rep1, __disable_if_is_duration<_Rep2>>, _Period> |
| operator%(const duration<_Rep1, _Period>& __d, const _Rep2& __s) |
| { |
| typedef duration<typename common_type<_Rep1, _Rep2>::type, _Period> |
| __cd; |
| return __cd(__cd(__d).count() % __s); |
| } |
| |
| template<typename _Rep1, typename _Period1, |
| typename _Rep2, typename _Period2> |
| constexpr typename common_type<duration<_Rep1, _Period1>, |
| duration<_Rep2, _Period2>>::type |
| operator%(const duration<_Rep1, _Period1>& __lhs, |
| const duration<_Rep2, _Period2>& __rhs) |
| { |
| typedef duration<_Rep1, _Period1> __dur1; |
| typedef duration<_Rep2, _Period2> __dur2; |
| typedef typename common_type<__dur1,__dur2>::type __cd; |
| return __cd(__cd(__lhs).count() % __cd(__rhs).count()); |
| } |
| |
| // comparisons |
| |
| template<typename _Rep1, typename _Period1, |
| typename _Rep2, typename _Period2> |
| constexpr bool |
| operator==(const duration<_Rep1, _Period1>& __lhs, |
| const duration<_Rep2, _Period2>& __rhs) |
| { |
| typedef duration<_Rep1, _Period1> __dur1; |
| typedef duration<_Rep2, _Period2> __dur2; |
| typedef typename common_type<__dur1,__dur2>::type __ct; |
| return __ct(__lhs).count() == __ct(__rhs).count(); |
| } |
| |
| template<typename _Rep1, typename _Period1, |
| typename _Rep2, typename _Period2> |
| constexpr bool |
| operator<(const duration<_Rep1, _Period1>& __lhs, |
| const duration<_Rep2, _Period2>& __rhs) |
| { |
| typedef duration<_Rep1, _Period1> __dur1; |
| typedef duration<_Rep2, _Period2> __dur2; |
| typedef typename common_type<__dur1,__dur2>::type __ct; |
| return __ct(__lhs).count() < __ct(__rhs).count(); |
| } |
| |
| #if __cpp_lib_three_way_comparison |
| template<typename _Rep1, typename _Period1, |
| typename _Rep2, typename _Period2> |
| requires three_way_comparable<common_type_t<_Rep1, _Rep2>> |
| constexpr auto |
| operator<=>(const duration<_Rep1, _Period1>& __lhs, |
| const duration<_Rep2, _Period2>& __rhs) |
| { |
| using __ct = common_type_t<duration<_Rep1, _Period1>, |
| duration<_Rep2, _Period2>>; |
| return __ct(__lhs).count() <=> __ct(__rhs).count(); |
| } |
| #else |
| template<typename _Rep1, typename _Period1, |
| typename _Rep2, typename _Period2> |
| constexpr bool |
| operator!=(const duration<_Rep1, _Period1>& __lhs, |
| const duration<_Rep2, _Period2>& __rhs) |
| { return !(__lhs == __rhs); } |
| #endif |
| |
| template<typename _Rep1, typename _Period1, |
| typename _Rep2, typename _Period2> |
| constexpr bool |
| operator<=(const duration<_Rep1, _Period1>& __lhs, |
| const duration<_Rep2, _Period2>& __rhs) |
| { return !(__rhs < __lhs); } |
| |
| template<typename _Rep1, typename _Period1, |
| typename _Rep2, typename _Period2> |
| constexpr bool |
| operator>(const duration<_Rep1, _Period1>& __lhs, |
| const duration<_Rep2, _Period2>& __rhs) |
| { return __rhs < __lhs; } |
| |
| template<typename _Rep1, typename _Period1, |
| typename _Rep2, typename _Period2> |
| constexpr bool |
| operator>=(const duration<_Rep1, _Period1>& __lhs, |
| const duration<_Rep2, _Period2>& __rhs) |
| { return !(__lhs < __rhs); } |
| |
| /// @} |
| |
| #ifdef _GLIBCXX_USE_C99_STDINT_TR1 |
| # define _GLIBCXX_CHRONO_INT64_T int64_t |
| #elif defined __INT64_TYPE__ |
| # define _GLIBCXX_CHRONO_INT64_T __INT64_TYPE__ |
| #else |
| static_assert(std::numeric_limits<unsigned long long>::digits >= 64, |
| "Representation type for nanoseconds must have at least 64 bits"); |
| # define _GLIBCXX_CHRONO_INT64_T long long |
| #endif |
| |
| /// nanoseconds |
| using nanoseconds = duration<_GLIBCXX_CHRONO_INT64_T, nano>; |
| |
| /// microseconds |
| using microseconds = duration<_GLIBCXX_CHRONO_INT64_T, micro>; |
| |
| /// milliseconds |
| using milliseconds = duration<_GLIBCXX_CHRONO_INT64_T, milli>; |
| |
| /// seconds |
| using seconds = duration<_GLIBCXX_CHRONO_INT64_T>; |
| |
| /// minutes |
| using minutes = duration<_GLIBCXX_CHRONO_INT64_T, ratio< 60>>; |
| |
| /// hours |
| using hours = duration<_GLIBCXX_CHRONO_INT64_T, ratio<3600>>; |
| |
| #if __cplusplus > 201703L |
| /// days |
| using days = duration<_GLIBCXX_CHRONO_INT64_T, ratio<86400>>; |
| |
| /// weeks |
| using weeks = duration<_GLIBCXX_CHRONO_INT64_T, ratio<604800>>; |
| |
| /// years |
| using years = duration<_GLIBCXX_CHRONO_INT64_T, ratio<31556952>>; |
| |
| /// months |
| using months = duration<_GLIBCXX_CHRONO_INT64_T, ratio<2629746>>; |
| #endif // C++20 |
| |
| #undef _GLIBCXX_CHRONO_INT64_T |
| |
| /// time_point |
| template<typename _Clock, typename _Dur> |
| struct time_point |
| { |
| static_assert(__is_duration<_Dur>::value, |
| "duration must be a specialization of std::chrono::duration"); |
| |
| typedef _Clock clock; |
| typedef _Dur duration; |
| typedef typename duration::rep rep; |
| typedef typename duration::period period; |
| |
| constexpr time_point() : __d(duration::zero()) |
| { } |
| |
| constexpr explicit time_point(const duration& __dur) |
| : __d(__dur) |
| { } |
| |
| // conversions |
| template<typename _Dur2, |
| typename = _Require<is_convertible<_Dur2, _Dur>>> |
| constexpr time_point(const time_point<clock, _Dur2>& __t) |
| : __d(__t.time_since_epoch()) |
| { } |
| |
| // observer |
| constexpr duration |
| time_since_epoch() const |
| { return __d; } |
| |
| #if __cplusplus > 201703L |
| constexpr time_point& |
| operator++() |
| { |
| ++__d; |
| return *this; |
| } |
| |
| constexpr time_point |
| operator++(int) |
| { return time_point{__d++}; } |
| |
| constexpr time_point& |
| operator--() |
| { |
| --__d; |
| return *this; |
| } |
| |
| constexpr time_point |
| operator--(int) |
| { return time_point{__d--}; } |
| #endif |
| |
| // arithmetic |
| _GLIBCXX17_CONSTEXPR time_point& |
| operator+=(const duration& __dur) |
| { |
| __d += __dur; |
| return *this; |
| } |
| |
| _GLIBCXX17_CONSTEXPR time_point& |
| operator-=(const duration& __dur) |
| { |
| __d -= __dur; |
| return *this; |
| } |
| |
| // special values |
| static constexpr time_point |
| min() noexcept |
| { return time_point(duration::min()); } |
| |
| static constexpr time_point |
| max() noexcept |
| { return time_point(duration::max()); } |
| |
| private: |
| duration __d; |
| }; |
| |
| /// time_point_cast |
| template<typename _ToDur, typename _Clock, typename _Dur> |
| constexpr typename enable_if<__is_duration<_ToDur>::value, |
| time_point<_Clock, _ToDur>>::type |
| time_point_cast(const time_point<_Clock, _Dur>& __t) |
| { |
| typedef time_point<_Clock, _ToDur> __time_point; |
| return __time_point(duration_cast<_ToDur>(__t.time_since_epoch())); |
| } |
| |
| #if __cplusplus > 201402L |
| template<typename _ToDur, typename _Clock, typename _Dur> |
| constexpr |
| enable_if_t<__is_duration<_ToDur>::value, time_point<_Clock, _ToDur>> |
| floor(const time_point<_Clock, _Dur>& __tp) |
| { |
| return time_point<_Clock, _ToDur>{ |
| chrono::floor<_ToDur>(__tp.time_since_epoch())}; |
| } |
| |
| template<typename _ToDur, typename _Clock, typename _Dur> |
| constexpr |
| enable_if_t<__is_duration<_ToDur>::value, time_point<_Clock, _ToDur>> |
| ceil(const time_point<_Clock, _Dur>& __tp) |
| { |
| return time_point<_Clock, _ToDur>{ |
| chrono::ceil<_ToDur>(__tp.time_since_epoch())}; |
| } |
| |
| template<typename _ToDur, typename _Clock, typename _Dur> |
| constexpr enable_if_t< |
| __and_<__is_duration<_ToDur>, |
| __not_<treat_as_floating_point<typename _ToDur::rep>>>::value, |
| time_point<_Clock, _ToDur>> |
| round(const time_point<_Clock, _Dur>& __tp) |
| { |
| return time_point<_Clock, _ToDur>{ |
| chrono::round<_ToDur>(__tp.time_since_epoch())}; |
| } |
| #endif // C++17 |
| |
| /// @relates time_point @{ |
| |
| /// Adjust a time point forwards by the given duration. |
| template<typename _Clock, typename _Dur1, |
| typename _Rep2, typename _Period2> |
| constexpr time_point<_Clock, |
| typename common_type<_Dur1, duration<_Rep2, _Period2>>::type> |
| operator+(const time_point<_Clock, _Dur1>& __lhs, |
| const duration<_Rep2, _Period2>& __rhs) |
| { |
| typedef duration<_Rep2, _Period2> __dur2; |
| typedef typename common_type<_Dur1,__dur2>::type __ct; |
| typedef time_point<_Clock, __ct> __time_point; |
| return __time_point(__lhs.time_since_epoch() + __rhs); |
| } |
| |
| /// Adjust a time point forwards by the given duration. |
| template<typename _Rep1, typename _Period1, |
| typename _Clock, typename _Dur2> |
| constexpr time_point<_Clock, |
| typename common_type<duration<_Rep1, _Period1>, _Dur2>::type> |
| operator+(const duration<_Rep1, _Period1>& __lhs, |
| const time_point<_Clock, _Dur2>& __rhs) |
| { |
| typedef duration<_Rep1, _Period1> __dur1; |
| typedef typename common_type<__dur1,_Dur2>::type __ct; |
| typedef time_point<_Clock, __ct> __time_point; |
| return __time_point(__rhs.time_since_epoch() + __lhs); |
| } |
| |
| /// Adjust a time point backwards by the given duration. |
| template<typename _Clock, typename _Dur1, |
| typename _Rep2, typename _Period2> |
| constexpr time_point<_Clock, |
| typename common_type<_Dur1, duration<_Rep2, _Period2>>::type> |
| operator-(const time_point<_Clock, _Dur1>& __lhs, |
| const duration<_Rep2, _Period2>& __rhs) |
| { |
| typedef duration<_Rep2, _Period2> __dur2; |
| typedef typename common_type<_Dur1,__dur2>::type __ct; |
| typedef time_point<_Clock, __ct> __time_point; |
| return __time_point(__lhs.time_since_epoch() -__rhs); |
| } |
| |
| /// @} |
| |
| /// @relates time_point @{ |
| |
| /// The difference between two time points (as a duration) |
| template<typename _Clock, typename _Dur1, typename _Dur2> |
| constexpr typename common_type<_Dur1, _Dur2>::type |
| operator-(const time_point<_Clock, _Dur1>& __lhs, |
| const time_point<_Clock, _Dur2>& __rhs) |
| { return __lhs.time_since_epoch() - __rhs.time_since_epoch(); } |
| |
| template<typename _Clock, typename _Dur1, typename _Dur2> |
| constexpr bool |
| operator==(const time_point<_Clock, _Dur1>& __lhs, |
| const time_point<_Clock, _Dur2>& __rhs) |
| { return __lhs.time_since_epoch() == __rhs.time_since_epoch(); } |
| |
| #if __cpp_lib_three_way_comparison |
| template<typename _Clock, typename _Dur1, |
| three_way_comparable_with<_Dur1> _Dur2> |
| constexpr auto |
| operator<=>(const time_point<_Clock, _Dur1>& __lhs, |
| const time_point<_Clock, _Dur2>& __rhs) |
| { return __lhs.time_since_epoch() <=> __rhs.time_since_epoch(); } |
| #else |
| template<typename _Clock, typename _Dur1, typename _Dur2> |
| constexpr bool |
| operator!=(const time_point<_Clock, _Dur1>& __lhs, |
| const time_point<_Clock, _Dur2>& __rhs) |
| { return !(__lhs == __rhs); } |
| #endif |
| |
| template<typename _Clock, typename _Dur1, typename _Dur2> |
| constexpr bool |
| operator<(const time_point<_Clock, _Dur1>& __lhs, |
| const time_point<_Clock, _Dur2>& __rhs) |
| { return __lhs.time_since_epoch() < __rhs.time_since_epoch(); } |
| |
| template<typename _Clock, typename _Dur1, typename _Dur2> |
| constexpr bool |
| operator<=(const time_point<_Clock, _Dur1>& __lhs, |
| const time_point<_Clock, _Dur2>& __rhs) |
| { return !(__rhs < __lhs); } |
| |
| template<typename _Clock, typename _Dur1, typename _Dur2> |
| constexpr bool |
| operator>(const time_point<_Clock, _Dur1>& __lhs, |
| const time_point<_Clock, _Dur2>& __rhs) |
| { return __rhs < __lhs; } |
| |
| template<typename _Clock, typename _Dur1, typename _Dur2> |
| constexpr bool |
| operator>=(const time_point<_Clock, _Dur1>& __lhs, |
| const time_point<_Clock, _Dur2>& __rhs) |
| { return !(__lhs < __rhs); } |
| |
| /// @} |
| |
| // Clocks. |
| |
| // Why nanosecond resolution as the default? |
| // Why have std::system_clock always count in the highest |
| // resolution (ie nanoseconds), even if on some OSes the low 3 |
| // or 9 decimal digits will be always zero? This allows later |
| // implementations to change the system_clock::now() |
| // implementation any time to provide better resolution without |
| // changing function signature or units. |
| |
| // To support the (forward) evolution of the library's defined |
| // clocks, wrap inside inline namespace so that the current |
| // defintions of system_clock, steady_clock, and |
| // high_resolution_clock types are uniquely mangled. This way, new |
| // code can use the latests clocks, while the library can contain |
| // compatibility definitions for previous versions. At some |
| // point, when these clocks settle down, the inlined namespaces |
| // can be removed. XXX GLIBCXX_ABI Deprecated |
| inline namespace _V2 { |
| |
| /** |
| * @brief System clock. |
| * |
| * Time returned represents wall time from the system-wide clock. |
| * @ingroup chrono |
| */ |
| struct system_clock |
| { |
| typedef chrono::nanoseconds duration; |
| typedef duration::rep rep; |
| typedef duration::period period; |
| typedef chrono::time_point<system_clock, duration> time_point; |
| |
| static_assert(system_clock::duration::min() |
| < system_clock::duration::zero(), |
| "a clock's minimum duration cannot be less than its epoch"); |
| |
| static constexpr bool is_steady = false; |
| |
| static time_point |
| now() noexcept; |
| |
| // Map to C API |
| static std::time_t |
| to_time_t(const time_point& __t) noexcept |
| { |
| return std::time_t(duration_cast<chrono::seconds> |
| (__t.time_since_epoch()).count()); |
| } |
| |
| static time_point |
| from_time_t(std::time_t __t) noexcept |
| { |
| typedef chrono::time_point<system_clock, seconds> __from; |
| return time_point_cast<system_clock::duration> |
| (__from(chrono::seconds(__t))); |
| } |
| }; |
| |
| |
| /** |
| * @brief Monotonic clock |
| * |
| * Time returned has the property of only increasing at a uniform rate. |
| * @ingroup chrono |
| */ |
| struct steady_clock |
| { |
| typedef chrono::nanoseconds duration; |
| typedef duration::rep rep; |
| typedef duration::period period; |
| typedef chrono::time_point<steady_clock, duration> time_point; |
| |
| static constexpr bool is_steady = true; |
| |
| static time_point |
| now() noexcept; |
| }; |
| |
| |
| /** |
| * @brief Highest-resolution clock |
| * |
| * This is the clock "with the shortest tick period." Alias to |
| * std::system_clock until higher-than-nanosecond definitions |
| * become feasible. |
| * @ingroup chrono |
| */ |
| using high_resolution_clock = system_clock; |
| |
| } // end inline namespace _V2 |
| |
| #if __cplusplus > 201703L |
| template<typename _Duration> |
| using sys_time = time_point<system_clock, _Duration>; |
| using sys_seconds = sys_time<seconds>; |
| using sys_days = sys_time<days>; |
| |
| using file_clock = ::std::filesystem::__file_clock; |
| |
| template<typename _Duration> |
| using file_time = time_point<file_clock, _Duration>; |
| |
| template<> struct is_clock<system_clock> : true_type { }; |
| template<> struct is_clock<steady_clock> : true_type { }; |
| template<> struct is_clock<file_clock> : true_type { }; |
| |
| template<> inline constexpr bool is_clock_v<system_clock> = true; |
| template<> inline constexpr bool is_clock_v<steady_clock> = true; |
| template<> inline constexpr bool is_clock_v<file_clock> = true; |
| |
| struct local_t { }; |
| template<typename _Duration> |
| using local_time = time_point<local_t, _Duration>; |
| using local_seconds = local_time<seconds>; |
| using local_days = local_time<days>; |
| |
| class utc_clock; |
| class tai_clock; |
| class gps_clock; |
| |
| template<typename _Duration> |
| using utc_time = time_point<utc_clock, _Duration>; |
| using utc_seconds = utc_time<seconds>; |
| |
| template<typename _Duration> |
| using tai_time = time_point<tai_clock, _Duration>; |
| using tai_seconds = tai_time<seconds>; |
| |
| template<typename _Duration> |
| using gps_time = time_point<gps_clock, _Duration>; |
| using gps_seconds = gps_time<seconds>; |
| |
| template<> struct is_clock<utc_clock> : true_type { }; |
| template<> struct is_clock<tai_clock> : true_type { }; |
| template<> struct is_clock<gps_clock> : true_type { }; |
| |
| template<> inline constexpr bool is_clock_v<utc_clock> = true; |
| template<> inline constexpr bool is_clock_v<tai_clock> = true; |
| template<> inline constexpr bool is_clock_v<gps_clock> = true; |
| |
| struct leap_second_info |
| { |
| bool is_leap_second; |
| seconds elapsed; |
| }; |
| |
| // CALENDRICAL TYPES |
| |
| // CLASS DECLARATIONS |
| class day; |
| class month; |
| class year; |
| class weekday; |
| class weekday_indexed; |
| class weekday_last; |
| class month_day; |
| class month_day_last; |
| class month_weekday; |
| class month_weekday_last; |
| class year_month; |
| class year_month_day; |
| class year_month_day_last; |
| class year_month_weekday; |
| class year_month_weekday_last; |
| |
| struct last_spec |
| { |
| explicit last_spec() = default; |
| |
| friend constexpr month_day_last |
| operator/(int __m, last_spec) noexcept; |
| |
| friend constexpr month_day_last |
| operator/(last_spec, int __m) noexcept; |
| }; |
| |
| inline constexpr last_spec last{}; |
| |
| namespace __detail |
| { |
| // Compute the remainder of the Euclidean division of __n divided by __d. |
| // Euclidean division truncates toward negative infinity and always |
| // produces a remainder in the range of [0,__d-1] (whereas standard |
| // division truncates toward zero and yields a nonpositive remainder |
| // for negative __n). |
| constexpr unsigned |
| __modulo(long long __n, unsigned __d) |
| { |
| if (__n >= 0) |
| return __n % __d; |
| else |
| return (__d + (__n % __d)) % __d; |
| } |
| |
| inline constexpr unsigned __days_per_month[12] |
| = { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; |
| } |
| |
| // DAY |
| |
| class day |
| { |
| private: |
| unsigned char _M_d; |
| |
| public: |
| day() = default; |
| |
| explicit constexpr |
| day(unsigned __d) noexcept |
| : _M_d(__d) |
| { } |
| |
| constexpr day& |
| operator++() noexcept |
| { |
| ++_M_d; |
| return *this; |
| } |
| |
| constexpr day |
| operator++(int) noexcept |
| { |
| auto __ret = *this; |
| ++(*this); |
| return __ret; |
| } |
| |
| constexpr day& |
| operator--() noexcept |
| { |
| --_M_d; |
| return *this; |
| } |
| |
| constexpr day |
| operator--(int) noexcept |
| { |
| auto __ret = *this; |
| --(*this); |
| return __ret; |
| } |
| |
| constexpr day& |
| operator+=(const days& __d) noexcept |
| { |
| *this = *this + __d; |
| return *this; |
| } |
| |
| constexpr day& |
| operator-=(const days& __d) noexcept |
| { |
| *this = *this - __d; |
| return *this; |
| } |
| |
| constexpr explicit |
| operator unsigned() const noexcept |
| { return _M_d; } |
| |
| constexpr bool |
| ok() const noexcept |
| { return 1 <= _M_d && _M_d <= 31; } |
| |
| friend constexpr bool |
| operator==(const day& __x, const day& __y) noexcept |
| { return unsigned{__x} == unsigned{__y}; } |
| |
| friend constexpr strong_ordering |
| operator<=>(const day& __x, const day& __y) noexcept |
| { return unsigned{__x} <=> unsigned{__y}; } |
| |
| friend constexpr day |
| operator+(const day& __x, const days& __y) noexcept |
| { return day(unsigned{__x} + __y.count()); } |
| |
| friend constexpr day |
| operator+(const days& __x, const day& __y) noexcept |
| { return __y + __x; } |
| |
| friend constexpr day |
| operator-(const day& __x, const days& __y) noexcept |
| { return __x + -__y; } |
| |
| friend constexpr days |
| operator-(const day& __x, const day& __y) noexcept |
| { return days{int(unsigned{__x}) - int(unsigned{__y})}; } |
| |
| friend constexpr month_day |
| operator/(const month& __m, const day& __d) noexcept; |
| |
| friend constexpr month_day |
| operator/(int __m, const day& __d) noexcept; |
| |
| friend constexpr month_day |
| operator/(const day& __d, const month& __m) noexcept; |
| |
| friend constexpr month_day |
| operator/(const day& __d, int __m) noexcept; |
| |
| friend constexpr year_month_day |
| operator/(const year_month& __ym, const day& __d) noexcept; |
| |
| // TODO: Implement operator<<, to_stream, from_stream. |
| }; |
| |
| // MONTH |
| |
| class month |
| { |
| private: |
| unsigned char _M_m; |
| |
| public: |
| month() = default; |
| |
| explicit constexpr |
| month(unsigned __m) noexcept |
| : _M_m(__m) |
| { } |
| |
| constexpr month& |
| operator++() noexcept |
| { |
| *this += months{1}; |
| return *this; |
| } |
| |
| constexpr month |
| operator++(int) noexcept |
| { |
| auto __ret = *this; |
| ++(*this); |
| return __ret; |
| } |
| |
| constexpr month& |
| operator--() noexcept |
| { |
| *this -= months{1}; |
| return *this; |
| } |
| |
| constexpr month |
| operator--(int) noexcept |
| { |
| auto __ret = *this; |
| --(*this); |
| return __ret; |
| } |
| |
| constexpr month& |
| operator+=(const months& __m) noexcept |
| { |
| *this = *this + __m; |
| return *this; |
| } |
| |
| constexpr month& |
| operator-=(const months& __m) noexcept |
| { |
| *this = *this - __m; |
| return *this; |
| } |
| |
| explicit constexpr |
| operator unsigned() const noexcept |
| { return _M_m; } |
| |
| constexpr bool |
| ok() const noexcept |
| { return 1 <= _M_m && _M_m <= 12; } |
| |
| friend constexpr bool |
| operator==(const month& __x, const month& __y) noexcept |
| { return unsigned{__x} == unsigned{__y}; } |
| |
| friend constexpr strong_ordering |
| operator<=>(const month& __x, const month& __y) noexcept |
| { return unsigned{__x} <=> unsigned{__y}; } |
| |
| friend constexpr month |
| operator+(const month& __x, const months& __y) noexcept |
| { |
| auto __n = static_cast<long long>(unsigned{__x}) + (__y.count() - 1); |
| return month{__detail::__modulo(__n, 12) + 1}; |
| } |
| |
| friend constexpr month |
| operator+(const months& __x, const month& __y) noexcept |
| { return __y + __x; } |
| |
| friend constexpr month |
| operator-(const month& __x, const months& __y) noexcept |
| { return __x + -__y; } |
| |
| friend constexpr months |
| operator-(const month& __x, const month& __y) noexcept |
| { |
| const auto __dm = int(unsigned(__x)) - int(unsigned(__y)); |
| return months{__dm < 0 ? 12 + __dm : __dm}; |
| } |
| |
| friend constexpr year_month |
| operator/(const year& __y, const month& __m) noexcept; |
| |
| friend constexpr month_day |
| operator/(const month& __m, int __d) noexcept; |
| |
| friend constexpr month_day_last |
| operator/(const month& __m, last_spec) noexcept; |
| |
| friend constexpr month_day_last |
| operator/(last_spec, const month& __m) noexcept; |
| |
| friend constexpr month_weekday |
| operator/(const month& __m, const weekday_indexed& __wdi) noexcept; |
| |
| friend constexpr month_weekday |
| operator/(const weekday_indexed& __wdi, const month& __m) noexcept; |
| |
| friend constexpr month_weekday_last |
| operator/(const month& __m, const weekday_last& __wdl) noexcept; |
| |
| friend constexpr month_weekday_last |
| operator/(const weekday_last& __wdl, const month& __m) noexcept; |
| |
| // TODO: Implement operator<<, to_stream, from_stream. |
| }; |
| |
| inline constexpr month January{1}; |
| inline constexpr month February{2}; |
| inline constexpr month March{3}; |
| inline constexpr month April{4}; |
| inline constexpr month May{5}; |
| inline constexpr month June{6}; |
| inline constexpr month July{7}; |
| inline constexpr month August{8}; |
| inline constexpr month September{9}; |
| inline constexpr month October{10}; |
| inline constexpr month November{11}; |
| inline constexpr month December{12}; |
| |
| // YEAR |
| |
| class year |
| { |
| private: |
| short _M_y; |
| |
| public: |
| year() = default; |
| |
| explicit constexpr |
| year(int __y) noexcept |
| : _M_y{static_cast<short>(__y)} |
| { } |
| |
| static constexpr year |
| min() noexcept |
| { return year{-32767}; } |
| |
| static constexpr year |
| max() noexcept |
| { return year{32767}; } |
| |
| constexpr year& |
| operator++() noexcept |
| { |
| ++_M_y; |
| return *this; |
| } |
| |
| constexpr year |
| operator++(int) noexcept |
| { |
| auto __ret = *this; |
| ++(*this); |
| return __ret; |
| } |
| |
| constexpr year& |
| operator--() noexcept |
| { |
| --_M_y; |
| return *this; |
| } |
| |
| constexpr year |
| operator--(int) noexcept |
| { |
| auto __ret = *this; |
| --(*this); |
| return __ret; |
| } |
| |
| constexpr year& |
| operator+=(const years& __y) noexcept |
| { |
| *this = *this + __y; |
| return *this; |
| } |
| |
| constexpr year& |
| operator-=(const years& __y) noexcept |
| { |
| *this = *this - __y; |
| return *this; |
| } |
| |
| constexpr year |
| operator+() const noexcept |
| { return *this; } |
| |
| constexpr year |
| operator-() const noexcept |
| { return year{-_M_y}; } |
| |
| constexpr bool |
| is_leap() const noexcept |
| { |
| // Testing divisibility by 100 first gives better performance, that is, |
| // return (_M_y % 100 != 0 || _M_y % 400 == 0) && _M_y % 4 == 0; |
| |
| // It gets even faster if _M_y is in [-536870800, 536870999] |
| // (which is the case here) and _M_y % 100 is replaced by |
| // __is_multiple_of_100 below. |
| |
| // References: |
| // [1] https://github.com/cassioneri/calendar |
| // [2] https://accu.org/journals/overload/28/155/overload155.pdf#page=16 |
| |
| constexpr uint32_t __multiplier = 42949673; |
| constexpr uint32_t __bound = 42949669; |
| constexpr uint32_t __max_dividend = 1073741799; |
| constexpr uint32_t __offset = __max_dividend / 2 / 100 * 100; |
| const bool __is_multiple_of_100 |
| = __multiplier * (_M_y + __offset) < __bound; |
| return (!__is_multiple_of_100 || _M_y % 400 == 0) && _M_y % 4 == 0; |
| } |
| |
| explicit constexpr |
| operator int() const noexcept |
| { return _M_y; } |
| |
| constexpr bool |
| ok() const noexcept |
| { return min()._M_y <= _M_y && _M_y <= max()._M_y; } |
| |
| friend constexpr bool |
| operator==(const year& __x, const year& __y) noexcept |
| { return int{__x} == int{__y}; } |
| |
| friend constexpr strong_ordering |
| operator<=>(const year& __x, const year& __y) noexcept |
| { return int{__x} <=> int{__y}; } |
| |
| friend constexpr year |
| operator+(const year& __x, const years& __y) noexcept |
| { return year{int{__x} + static_cast<int>(__y.count())}; } |
| |
| friend constexpr year |
| operator+(const years& __x, const year& __y) noexcept |
| { return __y + __x; } |
| |
| friend constexpr year |
| operator-(const year& __x, const years& __y) noexcept |
| { return __x + -__y; } |
| |
| friend constexpr years |
| operator-(const year& __x, const year& __y) noexcept |
| { return years{int{__x} - int{__y}}; } |
| |
| friend constexpr year_month |
| operator/(const year& __y, int __m) noexcept; |
| |
| friend constexpr year_month_day |
| operator/(const year& __y, const month_day& __md) noexcept; |
| |
| friend constexpr year_month_day |
| operator/(const month_day& __md, const year& __y) noexcept; |
| |
| friend constexpr year_month_day_last |
| operator/(const year& __y, const month_day_last& __mdl) noexcept; |
| |
| friend constexpr year_month_day_last |
| operator/(const month_day_last& __mdl, const year& __y) noexcept; |
| |
| friend constexpr year_month_weekday |
| operator/(const year& __y, const month_weekday& __mwd) noexcept; |
| |
| friend constexpr year_month_weekday |
| operator/(const month_weekday& __mwd, const year& __y) noexcept; |
| |
| friend constexpr year_month_weekday_last |
| operator/(const year& __y, const month_weekday_last& __mwdl) noexcept; |
| |
| friend constexpr year_month_weekday_last |
| operator/(const month_weekday_last& __mwdl, const year& __y) noexcept; |
| |
| // TODO: Implement operator<<, to_stream, from_stream. |
| }; |
| |
| // WEEKDAY |
| |
| class weekday |
| { |
| private: |
| unsigned char _M_wd; |
| |
| static constexpr weekday |
| _S_from_days(const days& __d) |
| { |
| auto __n = __d.count(); |
| return weekday(__n >= -4 ? (__n + 4) % 7 : (__n + 5) % 7 + 6); |
| } |
| |
| public: |
| weekday() = default; |
| |
| explicit constexpr |
| weekday(unsigned __wd) noexcept |
| : _M_wd(__wd == 7 ? 0 : __wd) // __wd % 7 ? |
| { } |
| |
| constexpr |
| weekday(const sys_days& __dp) noexcept |
| : weekday{_S_from_days(__dp.time_since_epoch())} |
| { } |
| |
| explicit constexpr |
| weekday(const local_days& __dp) noexcept |
| : weekday{sys_days{__dp.time_since_epoch()}} |
| { } |
| |
| constexpr weekday& |
| operator++() noexcept |
| { |
| *this += days{1}; |
| return *this; |
| } |
| |
| constexpr weekday |
| operator++(int) noexcept |
| { |
| auto __ret = *this; |
| ++(*this); |
| return __ret; |
| } |
| |
| constexpr weekday& |
| operator--() noexcept |
| { |
| *this -= days{1}; |
| return *this; |
| } |
| |
| constexpr weekday |
| operator--(int) noexcept |
| { |
| auto __ret = *this; |
| --(*this); |
| return __ret; |
| } |
| |
| constexpr weekday& |
| operator+=(const days& __d) noexcept |
| { |
| *this = *this + __d; |
| return *this; |
| } |
| |
| constexpr weekday& |
| operator-=(const days& __d) noexcept |
| { |
| *this = *this - __d; |
| return *this; |
| } |
| |
| constexpr unsigned |
| c_encoding() const noexcept |
| { return _M_wd; } |
| |
| constexpr unsigned |
| iso_encoding() const noexcept |
| { return _M_wd == 0u ? 7u : _M_wd; } |
| |
| constexpr bool |
| ok() const noexcept |
| { return _M_wd <= 6; } |
| |
| constexpr weekday_indexed |
| operator[](unsigned __index) const noexcept; |
| |
| constexpr weekday_last |
| operator[](last_spec) const noexcept; |
| |
| friend constexpr bool |
| operator==(const weekday& __x, const weekday& __y) noexcept |
| { return __x._M_wd == __y._M_wd; } |
| |
| friend constexpr weekday |
| operator+(const weekday& __x, const days& __y) noexcept |
| { |
| auto __n = static_cast<long long>(__x._M_wd) + __y.count(); |
| return weekday{__detail::__modulo(__n, 7)}; |
| } |
| |
| friend constexpr weekday |
| operator+(const days& __x, const weekday& __y) noexcept |
| { return __y + __x; } |
| |
| friend constexpr weekday |
| operator-(const weekday& __x, const days& __y) noexcept |
| { return __x + -__y; } |
| |
| friend constexpr days |
| operator-(const weekday& __x, const weekday& __y) noexcept |
| { |
| auto __n = static_cast<long long>(__x._M_wd) - __y._M_wd; |
| return days{__detail::__modulo(__n, 7)}; |
| } |
| |
| // TODO: operator<<, from_stream. |
| }; |
| |
| inline constexpr weekday Sunday{0}; |
| inline constexpr weekday Monday{1}; |
| inline constexpr weekday Tuesday{2}; |
| inline constexpr weekday Wednesday{3}; |
| inline constexpr weekday Thursday{4}; |
| inline constexpr weekday Friday{5}; |
| inline constexpr weekday Saturday{6}; |
| |
| // WEEKDAY_INDEXED |
| |
| class weekday_indexed |
| { |
| private: |
| chrono::weekday _M_wd; |
| unsigned char _M_index; |
| |
| public: |
| weekday_indexed() = default; |
| |
| constexpr |
| weekday_indexed(const chrono::weekday& __wd, unsigned __index) noexcept |
| : _M_wd(__wd), _M_index(__index) |
| { } |
| |
| constexpr chrono::weekday |
| weekday() const noexcept |
| { return _M_wd; } |
| |
| constexpr unsigned |
| index() const noexcept |
| { return _M_index; }; |
| |
| constexpr bool |
| ok() const noexcept |
| { return _M_wd.ok() && 1 <= _M_index && _M_index <= 5; } |
| |
| friend constexpr bool |
| operator==(const weekday_indexed& __x, const weekday_indexed& __y) noexcept |
| { return __x.weekday() == __y.weekday() && __x.index() == __y.index(); } |
| |
| friend constexpr month_weekday |
| operator/(const month& __m, const weekday_indexed& __wdi) noexcept; |
| |
| friend constexpr month_weekday |
| operator/(int __m, const weekday_indexed& __wdi) noexcept; |
| |
| friend constexpr month_weekday |
| operator/(const weekday_indexed& __wdi, const month& __m) noexcept; |
| |
| friend constexpr month_weekday |
| operator/(const weekday_indexed& __wdi, int __m) noexcept; |
| |
| friend constexpr year_month_weekday |
| operator/(const year_month& __ym, const weekday_indexed& __wdi) noexcept; |
| |
| // TODO: Implement operator<<. |
| }; |
| |
| constexpr weekday_indexed |
| weekday::operator[](unsigned __index) const noexcept |
| { return {*this, __index}; } |
| |
| // WEEKDAY_LAST |
| |
| class weekday_last |
| { |
| private: |
| chrono::weekday _M_wd; |
| |
| public: |
| explicit constexpr |
| weekday_last(const chrono::weekday& __wd) noexcept |
| : _M_wd{__wd} |
| { } |
| |
| constexpr chrono::weekday |
| weekday() const noexcept |
| { return _M_wd; } |
| |
| constexpr bool |
| ok() const noexcept |
| { return _M_wd.ok(); } |
| |
| friend constexpr bool |
| operator==(const weekday_last& __x, const weekday_last& __y) noexcept |
| { return __x.weekday() == __y.weekday(); } |
| |
| friend constexpr month_weekday_last |
| operator/(int __m, const weekday_last& __wdl) noexcept; |
| |
| friend constexpr month_weekday_last |
| operator/(const weekday_last& __wdl, int __m) noexcept; |
| |
| friend constexpr year_month_weekday_last |
| operator/(const year_month& __ym, const weekday_last& __wdl) noexcept; |
| |
| // TODO: Implement operator<<. |
| }; |
| |
| constexpr weekday_last |
| weekday::operator[](last_spec) const noexcept |
| { return weekday_last{*this}; } |
| |
| // MONTH_DAY |
| |
| class month_day |
| { |
| private: |
| chrono::month _M_m; |
| chrono::day _M_d; |
| |
| public: |
| month_day() = default; |
| |
| constexpr |
| month_day(const chrono::month& __m, const chrono::day& __d) noexcept |
| : _M_m{__m}, _M_d{__d} |
| { } |
| |
| constexpr chrono::month |
| month() const noexcept |
| { return _M_m; } |
| |
| constexpr chrono::day |
| day() const noexcept |
| { return _M_d; } |
| |
| constexpr bool |
| ok() const noexcept |
| { |
| return _M_m.ok() |
| && 1u <= unsigned(_M_d) |
| && unsigned(_M_d) <= __detail::__days_per_month[unsigned(_M_m) - 1]; |
| } |
| |
| friend constexpr bool |
| operator==(const month_day& __x, const month_day& __y) noexcept |
| { return __x.month() == __y.month() && __x.day() == __y.day(); } |
| |
| friend constexpr strong_ordering |
| operator<=>(const month_day& __x, const month_day& __y) noexcept |
| = default; |
| |
| friend constexpr month_day |
| operator/(const chrono::month& __m, const chrono::day& __d) noexcept |
| { return {__m, __d}; } |
| |
| friend constexpr month_day |
| operator/(const chrono::month& __m, int __d) noexcept |
| { return {__m, chrono::day(unsigned(__d))}; } |
| |
| friend constexpr month_day |
| operator/(int __m, const chrono::day& __d) noexcept |
| { return {chrono::month(unsigned(__m)), __d}; } |
| |
| friend constexpr month_day |
| operator/(const chrono::day& __d, const chrono::month& __m) noexcept |
| { return {__m, __d}; } |
| |
| friend constexpr month_day |
| operator/(const chrono::day& __d, int __m) noexcept |
| { return {chrono::month(unsigned(__m)), __d}; } |
| |
| friend constexpr year_month_day |
| operator/(int __y, const month_day& __md) noexcept; |
| |
| friend constexpr year_month_day |
| operator/(const month_day& __md, int __y) noexcept; |
| |
| // TODO: Implement operator<<, from_stream. |
| }; |
| |
| // MONTH_DAY_LAST |
| |
| class month_day_last |
| { |
| private: |
| chrono::month _M_m; |
| |
| public: |
| explicit constexpr |
| month_day_last(const chrono::month& __m) noexcept |
| : _M_m{__m} |
| { } |
| |
| constexpr chrono::month |
| month() const noexcept |
| { return _M_m; } |
| |
| constexpr bool |
| ok() const noexcept |
| { return _M_m.ok(); } |
| |
| friend constexpr bool |
| operator==(const month_day_last& __x, const month_day_last& __y) noexcept |
| { return __x.month() == __y.month(); } |
| |
| friend constexpr strong_ordering |
| operator<=>(const month_day_last& __x, const month_day_last& __y) noexcept |
| = default; |
| |
| friend constexpr month_day_last |
| operator/(const chrono::month& __m, last_spec) noexcept |
| { return month_day_last{__m}; } |
| |
| friend constexpr month_day_last |
| operator/(int __m, last_spec) noexcept |
| { return chrono::month(unsigned(__m)) / last; } |
| |
| friend constexpr month_day_last |
| operator/(last_spec, const chrono::month& __m) noexcept |
| { return __m / last; } |
| |
| friend constexpr month_day_last |
| operator/(last_spec, int __m) noexcept |
| { return __m / last; } |
| |
| friend constexpr year_month_day_last |
| operator/(int __y, const month_day_last& __mdl) noexcept; |
| |
| friend constexpr year_month_day_last |
| operator/(const month_day_last& __mdl, int __y) noexcept; |
| |
| // TODO: Implement operator<<. |
| }; |
| |
| // MONTH_WEEKDAY |
| |
| class month_weekday |
| { |
| private: |
| chrono::month _M_m; |
| chrono::weekday_indexed _M_wdi; |
| |
| public: |
| constexpr |
| month_weekday(const chrono::month& __m, |
| const chrono::weekday_indexed& __wdi) noexcept |
| : _M_m{__m}, _M_wdi{__wdi} |
| { } |
| |
| constexpr chrono::month |
| month() const noexcept |
| { return _M_m; } |
| |
| constexpr chrono::weekday_indexed |
| weekday_indexed() const noexcept |
| { return _M_wdi; } |
| |
| constexpr bool |
| ok() const noexcept |
| { return _M_m.ok() && _M_wdi.ok(); } |
| |
| friend constexpr bool |
| operator==(const month_weekday& __x, const month_weekday& __y) noexcept |
| { |
| return __x.month() == __y.month() |
| && __x.weekday_indexed() == __y.weekday_indexed(); |
| } |
| |
| friend constexpr month_weekday |
| operator/(const chrono::month& __m, |
| const chrono::weekday_indexed& __wdi) noexcept |
| { return {__m, __wdi}; } |
| |
| friend constexpr month_weekday |
| operator/(int __m, const chrono::weekday_indexed& __wdi) noexcept |
| { return chrono::month(unsigned(__m)) / __wdi; } |
| |
| friend constexpr month_weekday |
| operator/(const chrono::weekday_indexed& __wdi, |
| const chrono::month& __m) noexcept |
| { return __m / __wdi; } |
| |
| friend constexpr month_weekday |
| operator/(const chrono::weekday_indexed& __wdi, int __m) noexcept |
| { return __m / __wdi; } |
| |
| friend constexpr year_month_weekday |
| operator/(int __y, const month_weekday& __mwd) noexcept; |
| |
| friend constexpr year_month_weekday |
| operator/(const month_weekday& __mwd, int __y) noexcept; |
| |
| // TODO: Implement operator<<. |
| }; |
| |
| // MONTH_WEEKDAY_LAST |
| |
| class month_weekday_last |
| { |
| private: |
| chrono::month _M_m; |
| chrono::weekday_last _M_wdl; |
| |
| public: |
| constexpr |
| month_weekday_last(const chrono::month& __m, |
| const chrono::weekday_last& __wdl) noexcept |
| :_M_m{__m}, _M_wdl{__wdl} |
| { } |
| |
| constexpr chrono::month |
| month() const noexcept |
| { return _M_m; } |
| |
| constexpr chrono::weekday_last |
| weekday_last() const noexcept |
| { return _M_wdl; } |
| |
| constexpr bool |
| ok() const noexcept |
| { return _M_m.ok() && _M_wdl.ok(); } |
| |
| friend constexpr bool |
| operator==(const month_weekday_last& __x, |
| const month_weekday_last& __y) noexcept |
| { |
| return __x.month() == __y.month() |
| && __x.weekday_last() == __y.weekday_last(); |
| } |
| |
| friend constexpr month_weekday_last |
| operator/(const chrono::month& __m, |
| const chrono::weekday_last& __wdl) noexcept |
| { return {__m, __wdl}; } |
| |
| friend constexpr month_weekday_last |
| operator/(int __m, const chrono::weekday_last& __wdl) noexcept |
| { return chrono::month(unsigned(__m)) / __wdl; } |
| |
| friend constexpr month_weekday_last |
| operator/(const chrono::weekday_last& __wdl, |
| const chrono::month& __m) noexcept |
| { return __m / __wdl; } |
| |
| friend constexpr month_weekday_last |
| operator/(const chrono::weekday_last& __wdl, int __m) noexcept |
| { return chrono::month(unsigned(__m)) / __wdl; } |
| |
| friend constexpr year_month_weekday_last |
| operator/(int __y, const month_weekday_last& __mwdl) noexcept; |
| |
| friend constexpr year_month_weekday_last |
| operator/(const month_weekday_last& __mwdl, int __y) noexcept; |
| |
| // TODO: Implement operator<<. |
| }; |
| |
| // YEAR_MONTH |
| |
| namespace __detail |
| { |
| // [time.cal.ym], [time.cal.ymd], etc constrain the 'months'-based |
| // addition/subtraction operator overloads like so: |
| // |
| // Constraints: if the argument supplied by the caller for the months |
| // parameter is convertible to years, its implicit conversion sequence |
| // to years is worse than its implicit conversion sequence to months. |
| // |
| // We realize this constraint by templatizing the 'months'-based |
| // overloads (using a dummy defaulted template parameter), so that |
| // overload resolution doesn't select the 'months'-based overload unless |
| // the implicit conversion sequence to 'months' is better than that to |
| // 'years'. |
| using __months_years_conversion_disambiguator = void; |
| } |
| |
| class year_month |
| { |
| private: |
| chrono::year _M_y; |
| chrono::month _M_m; |
| |
| public: |
| year_month() = default; |
| |
| constexpr |
| year_month(const chrono::year& __y, const chrono::month& __m) noexcept |
| : _M_y{__y}, _M_m{__m} |
| { } |
| |
| constexpr chrono::year |
| year() const noexcept |
| { return _M_y; } |
| |
| constexpr chrono::month |
| month() const noexcept |
| { return _M_m; } |
| |
| template<typename = __detail::__months_years_conversion_disambiguator> |
| constexpr year_month& |
| operator+=(const months& __dm) noexcept |
| { |
| *this = *this + __dm; |
| return *this; |
| } |
| |
| template<typename = __detail::__months_years_conversion_disambiguator> |
| constexpr year_month& |
| operator-=(const months& __dm) noexcept |
| { |
| *this = *this - __dm; |
| return *this; |
| } |
| |
| constexpr year_month& |
| operator+=(const years& __dy) noexcept |
| { |
| *this = *this + __dy; |
| return *this; |
| } |
| |
| constexpr year_month& |
| operator-=(const years& __dy) noexcept |
| { |
| *this = *this - __dy; |
| return *this; |
| } |
| |
| constexpr bool |
| ok() const noexcept |
| { return _M_y.ok() && _M_m.ok(); } |
| |
| friend constexpr bool |
| operator==(const year_month& __x, const year_month& __y) noexcept |
| { return __x.year() == __y.year() && __x.month() == __y.month(); } |
| |
| friend constexpr strong_ordering |
| operator<=>(const year_month& __x, const year_month& __y) noexcept |
| = default; |
| |
| template<typename = __detail::__months_years_conversion_disambiguator> |
| friend constexpr year_month |
| operator+(const year_month& __ym, const months& __dm) noexcept |
| { |
| // TODO: Optimize? |
| auto __m = __ym.month() + __dm; |
| auto __i = int(unsigned(__ym.month())) - 1 + __dm.count(); |
| auto __y = (__i < 0 |
| ? __ym.year() + years{(__i - 11) / 12} |
| : __ym.year() + years{__i / 12}); |
| return __y / __m; |
| } |
| |
| template<typename = __detail::__months_years_conversion_disambiguator> |
| friend constexpr year_month |
| operator+(const months& __dm, const year_month& __ym) noexcept |
| { return __ym + __dm; } |
| |
| template<typename = __detail::__months_years_conversion_disambiguator> |
| friend constexpr year_month |
| operator-(const year_month& __ym, const months& __dm) noexcept |
| { return __ym + -__dm; } |
| |
| friend constexpr months |
| operator-(const year_month& __x, const year_month& __y) noexcept |
| { |
| return (__x.year() - __y.year() |
| + months{static_cast<int>(unsigned{__x.month()}) |
| - static_cast<int>(unsigned{__y.month()})}); |
| } |
| |
| friend constexpr year_month |
| operator+(const year_month& __ym, const years& __dy) noexcept |
| { return (__ym.year() + __dy) / __ym.month(); } |
| |
| friend constexpr year_month |
| operator+(const years& __dy, const year_month& __ym) noexcept |
| { return __ym + __dy; } |
| |
| friend constexpr year_month |
| operator-(const year_month& __ym, const years& __dy) noexcept |
| { return __ym + -__dy; } |
| |
| friend constexpr year_month |
| operator/(const chrono::year& __y, const chrono::month& __m) noexcept |
| { return {__y, __m}; } |
| |
| friend constexpr year_month |
| operator/(const chrono::year& __y, int __m) noexcept |
| { return {__y, chrono::month(unsigned(__m))}; } |
| |
| friend constexpr year_month_day |
| operator/(const year_month& __ym, int __d) noexcept; |
| |
| friend constexpr year_month_day_last |
| operator/(const year_month& __ym, last_spec) noexcept; |
| |
| // TODO: Implement operator<<, from_stream. |
| }; |
| |
| // YEAR_MONTH_DAY |
| |
| class year_month_day |
| { |
| private: |
| chrono::year _M_y; |
| chrono::month _M_m; |
| chrono::day _M_d; |
| |
| static constexpr year_month_day _S_from_days(const days& __dp) noexcept; |
| |
| constexpr days _M_days_since_epoch() const noexcept; |
| |
| public: |
| year_month_day() = default; |
| |
| constexpr |
| year_month_day(const chrono::year& __y, const chrono::month& __m, |
| const chrono::day& __d) noexcept |
| : _M_y{__y}, _M_m{__m}, _M_d{__d} |
| { } |
| |
| constexpr |
| year_month_day(const year_month_day_last& __ymdl) noexcept; |
| |
| constexpr |
| year_month_day(const sys_days& __dp) noexcept |
| : year_month_day(_S_from_days(__dp.time_since_epoch())) |
| { } |
| |
| explicit constexpr |
| year_month_day(const local_days& __dp) noexcept |
| : year_month_day(sys_days{__dp.time_since_epoch()}) |
| { } |
| |
| template<typename = __detail::__months_years_conversion_disambiguator> |
| constexpr year_month_day& |
| operator+=(const months& __m) noexcept |
| { |
| *this = *this + __m; |
| return *this; |
| } |
| |
| template<typename = __detail::__months_years_conversion_disambiguator> |
| constexpr year_month_day& |
| operator-=(const months& __m) noexcept |
| { |
| *this = *this - __m; |
| return *this; |
| } |
| |
| constexpr year_month_day& |
| operator+=(const years& __y) noexcept |
| { |
| *this = *this + __y; |
| return *this; |
| } |
| |
| constexpr year_month_day& |
| operator-=(const years& __y) noexcept |
| { |
| *this = *this - __y; |
| return *this; |
| } |
| |
| constexpr chrono::year |
| year() const noexcept |
| { return _M_y; } |
| |
| constexpr chrono::month |
| month() const noexcept |
| { return _M_m; } |
| |
| constexpr chrono::day |
| day() const noexcept |
| { return _M_d; } |
| |
| constexpr |
| operator sys_days() const noexcept |
| { return sys_days{_M_days_since_epoch()}; } |
| |
| explicit constexpr |
| operator local_days() const noexcept |
| { return local_days{sys_days{*this}.time_since_epoch()}; } |
| |
| constexpr bool ok() const noexcept; |
| |
| friend constexpr bool |
| operator==(const year_month_day& __x, const year_month_day& __y) noexcept |
| { |
| return __x.year() == __y.year() |
| && __x.month() == __y.month() |
| && __x.day() == __y.day(); |
| } |
| |
| friend constexpr strong_ordering |
| operator<=>(const year_month_day& __x, const year_month_day& __y) noexcept |
| = default; |
| |
| template<typename = __detail::__months_years_conversion_disambiguator> |
| friend constexpr year_month_day |
| operator+(const year_month_day& __ymd, const months& __dm) noexcept |
| { return (__ymd.year() / __ymd.month() + __dm) / __ymd.day(); } |
| |
| template<typename = __detail::__months_years_conversion_disambiguator> |
| friend constexpr year_month_day |
| operator+(const months& __dm, const year_month_day& __ymd) noexcept |
| { return __ymd + __dm; } |
| |
| friend constexpr year_month_day |
| operator+(const year_month_day& __ymd, const years& __dy) noexcept |
| { return (__ymd.year() + __dy) / __ymd.month() / __ymd.day(); } |
| |
| friend constexpr year_month_day |
| operator+(const years& __dy, const year_month_day& __ymd) noexcept |
| { return __ymd + __dy; } |
| |
| template<typename = __detail::__months_years_conversion_disambiguator> |
| friend constexpr year_month_day |
| operator-(const year_month_day& __ymd, const months& __dm) noexcept |
| { return __ymd + -__dm; } |
| |
| friend constexpr year_month_day |
| operator-(const year_month_day& __ymd, const years& __dy) noexcept |
| { return __ymd + -__dy; } |
| |
| friend constexpr year_month_day |
| operator/(const year_month& __ym, const chrono::day& __d) noexcept |
| { return {__ym.year(), __ym.month(), __d}; } |
| |
| friend constexpr year_month_day |
| operator/(const year_month& __ym, int __d) noexcept |
| { return __ym / chrono::day{unsigned(__d)}; } |
| |
| friend constexpr year_month_day |
| operator/(const chrono::year& __y, const month_day& __md) noexcept |
| { return __y / __md.month() / __md.day(); } |
| |
| friend constexpr year_month_day |
| operator/(int __y, const month_day& __md) noexcept |
| { return chrono::year{__y} / __md; } |
| |
| friend constexpr year_month_day |
| operator/(const month_day& __md, const chrono::year& __y) noexcept |
| { return __y / __md; } |
| |
| friend constexpr year_month_day |
| operator/(const month_day& __md, int __y) noexcept |
| { return chrono::year(__y) / __md; } |
| |
| // TODO: Implement operator<<, from_stream. |
| }; |
| |
| // Construct from days since 1970/01/01. |
| // Proposition 6.3 of Neri and Schneider, |
| // "Euclidean Affine Functions and Applications to Calendar Algorithms". |
| // https://arxiv.org/abs/2102.06959 |
| constexpr year_month_day |
| year_month_day::_S_from_days(const days& __dp) noexcept |
| { |
| constexpr auto __z2 = static_cast<uint32_t>(-1468000); |
| constexpr auto __r2_e3 = static_cast<uint32_t>(536895458); |
| |
| const auto __r0 = static_cast<uint32_t>(__dp.count()) + __r2_e3; |
| |
| const auto __n1 = 4 * __r0 + 3; |
| const auto __q1 = __n1 / 146097; |
| const auto __r1 = __n1 % 146097 / 4; |
| |
| constexpr auto __p32 = static_cast<uint64_t>(1) << 32; |
| const auto __n2 = 4 * __r1 + 3; |
| const auto __u2 = static_cast<uint64_t>(2939745) * __n2; |
| const auto __q2 = static_cast<uint32_t>(__u2 / __p32); |
| const auto __r2 = static_cast<uint32_t>(__u2 % __p32) / 2939745 / 4; |
| |
| constexpr auto __p16 = static_cast<uint32_t>(1) << 16; |
| const auto __n3 = 2141 * __r2 + 197913; |
| const auto __q3 = __n3 / __p16; |
| const auto __r3 = __n3 % __p16 / 2141; |
| |
| const auto __y0 = 100 * __q1 + __q2; |
| const auto __m0 = __q3; |
| const auto __d0 = __r3; |
| |
| const auto __j = __r2 >= 306; |
| const auto __y1 = __y0 + __j; |
| const auto __m1 = __j ? __m0 - 12 : __m0; |
| const auto __d1 = __d0 + 1; |
| |
| return year_month_day{chrono::year{static_cast<int>(__y1 + __z2)}, |
| chrono::month{__m1}, chrono::day{__d1}}; |
| } |
| |
| // Days since 1970/01/01. |
| // Proposition 6.2 of Neri and Schneider, |
| // "Euclidean Affine Functions and Applications to Calendar Algorithms". |
| // https://arxiv.org/abs/2102.06959 |
| constexpr days |
| year_month_day::_M_days_since_epoch() const noexcept |
| { |
| auto constexpr __z2 = static_cast<uint32_t>(-1468000); |
| auto constexpr __r2_e3 = static_cast<uint32_t>(536895458); |
| |
| const auto __y1 = static_cast<uint32_t>(static_cast<int>(_M_y)) - __z2; |
| const auto __m1 = static_cast<uint32_t>(static_cast<unsigned>(_M_m)); |
| const auto __d1 = static_cast<uint32_t>(static_cast<unsigned>(_M_d)); |
| |
| const auto __j = static_cast<uint32_t>(__m1 < 3); |
| const auto __y0 = __y1 - __j; |
| const auto __m0 = __j ? __m1 + 12 : __m1; |
| const auto __d0 = __d1 - 1; |
| |
| const auto __q1 = __y0 / 100; |
| const auto __yc = 1461 * __y0 / 4 - __q1 + __q1 / 4; |
| const auto __mc = (979 *__m0 - 2919) / 32; |
| const auto __dc = __d0; |
| |
| return days{static_cast<int32_t>(__yc + __mc + __dc - __r2_e3)}; |
| } |
| |
| // YEAR_MONTH_DAY_LAST |
| |
| class year_month_day_last |
| { |
| private: |
| chrono::year _M_y; |
| chrono::month_day_last _M_mdl; |
| |
| public: |
| constexpr |
| year_month_day_last(const chrono::year& __y, |
| const chrono::month_day_last& __mdl) noexcept |
| : _M_y{__y}, _M_mdl{__mdl} |
| { } |
| |
| template<typename = __detail::__months_years_conversion_disambiguator> |
| constexpr year_month_day_last& |
| operator+=(const months& __m) noexcept |
| { |
| *this = *this + __m; |
| return *this; |
| } |
| |
| template<typename = __detail::__months_years_conversion_disambiguator> |
| constexpr year_month_day_last& |
| operator-=(const months& __m) noexcept |
| { |
| *this = *this - __m; |
| return *this; |
| } |
| |
| constexpr year_month_day_last& |
| operator+=(const years& __y) noexcept |
| { |
| *this = *this + __y; |
| return *this; |
| } |
| |
| constexpr year_month_day_last& |
| operator-=(const years& __y) noexcept |
| { |
| *this = *this - __y; |
| return *this; |
| } |
| |
| constexpr chrono::year |
| year() const noexcept |
| { return _M_y; } |
| |
| constexpr chrono::month |
| month() const noexcept |
| { return _M_mdl.month(); } |
| |
| constexpr chrono::month_day_last |
| month_day_last() const noexcept |
| { return _M_mdl; } |
| |
| // Return A day representing the last day of this year, month pair. |
| constexpr chrono::day |
| day() const noexcept |
| { |
| const auto __m = static_cast<unsigned>(month()); |
| |
| // Excluding February, the last day of month __m is either 30 or 31 or, |
| // in another words, it is 30 + b = 30 | b, where b is in {0, 1}. |
| |
| // If __m in {1, 3, 4, 5, 6, 7}, then b is 1 if, and only if __m is odd. |
| // Hence, b = __m & 1 = (__m ^ 0) & 1. |
| |
| // If __m in {8, 9, 10, 11, 12}, then b is 1 if, and only if __m is even. |
| // Hence, b = (__m ^ 1) & 1. |
| |
| // Therefore, b = (__m ^ c) & 1, where c = 0, if __m < 8, or c = 1 if |
| // __m >= 8, that is, c = __m >> 3. |
| |
| // The above mathematically justifies this implementation whose |
| // performance does not depend on look-up tables being on the L1 cache. |
| return chrono::day{__m != 2 ? ((__m ^ (__m >> 3)) & 1) | 30 |
| : _M_y.is_leap() ? 29 : 28}; |
| } |
| |
| constexpr |
| operator sys_days() const noexcept |
| { return sys_days{year() / month() / day()}; } |
| |
| explicit constexpr |
| operator local_days() const noexcept |
| { return local_days{sys_days{*this}.time_since_epoch()}; } |
| |
| constexpr bool |
| ok() const noexcept |
| { return _M_y.ok() && _M_mdl.ok(); } |
| |
| friend constexpr bool |
| operator==(const year_month_day_last& __x, |
| const year_month_day_last& __y) noexcept |
| { |
| return __x.year() == __y.year() |
| && __x.month_day_last() == __y.month_day_last(); |
| } |
| |
| friend constexpr strong_ordering |
| operator<=>(const year_month_day_last& __x, |
| const year_month_day_last& __y) noexcept |
| = default; |
| |
| template<typename = __detail::__months_years_conversion_disambiguator> |
| friend constexpr year_month_day_last |
| operator+(const year_month_day_last& __ymdl, |
| const months& __dm) noexcept |
| { return (__ymdl.year() / __ymdl.month() + __dm) / last; } |
| |
| template<typename = __detail::__months_years_conversion_disambiguator> |
| friend constexpr year_month_day_last |
| operator+(const months& __dm, |
| const year_month_day_last& __ymdl) noexcept |
| { return __ymdl + __dm; } |
| |
| template<typename = __detail::__months_years_conversion_disambiguator> |
| friend constexpr year_month_day_last |
| operator-(const year_month_day_last& __ymdl, |
| const months& __dm) noexcept |
| { return __ymdl + -__dm; } |
| |
| friend constexpr year_month_day_last |
| operator+(const year_month_day_last& __ymdl, |
| const years& __dy) noexcept |
| { return {__ymdl.year() + __dy, __ymdl.month_day_last()}; } |
| |
| friend constexpr year_month_day_last |
| operator+(const years& __dy, |
| const year_month_day_last& __ymdl) noexcept |
| { return __ymdl + __dy; } |
| |
| friend constexpr year_month_day_last |
| operator-(const year_month_day_last& __ymdl, |
| const years& __dy) noexcept |
| { return __ymdl + -__dy; } |
| |
| friend constexpr year_month_day_last |
| operator/(const year_month& __ym, last_spec) noexcept |
| { return {__ym.year(), chrono::month_day_last{__ym.month()}}; } |
| |
| friend constexpr year_month_day_last |
| operator/(const chrono::year& __y, |
| const chrono::month_day_last& __mdl) noexcept |
| { return {__y, __mdl}; } |
| |
| friend constexpr year_month_day_last |
| operator/(int __y, const chrono::month_day_last& __mdl) noexcept |
| { return chrono::year(__y) / __mdl; } |
| |
| friend constexpr year_month_day_last |
| operator/(const chrono::month_day_last& __mdl, |
| const chrono::year& __y) noexcept |
| { return __y / __mdl; } |
| |
| friend constexpr year_month_day_last |
| operator/(const chrono::month_day_last& __mdl, int __y) noexcept |
| { return chrono::year(__y) / __mdl; } |
| |
| // TODO: Implement operator<<. |
| }; |
| |
| // year_month_day ctor from year_month_day_last |
| constexpr |
| year_month_day::year_month_day(const year_month_day_last& __ymdl) noexcept |
| : _M_y{__ymdl.year()}, _M_m{__ymdl.month()}, _M_d{__ymdl.day()} |
| { } |
| |
| constexpr bool |
| year_month_day::ok() const noexcept |
| { |
| if (!_M_y.ok() || !_M_m.ok()) |
| return false; |
| return chrono::day{1} <= _M_d && _M_d <= (_M_y / _M_m / last).day(); |
| } |
| |
| // YEAR_MONTH_WEEKDAY |
| |
| class year_month_weekday |
| { |
| private: |
| chrono::year _M_y; |
| chrono::month _M_m; |
| chrono::weekday_indexed _M_wdi; |
| |
| static constexpr year_month_weekday |
| _S_from_sys_days(const sys_days& __dp) |
| { |
| year_month_day __ymd{__dp}; |
| chrono::weekday __wd{__dp}; |
| auto __index = __wd[(unsigned{__ymd.day()} - 1) / 7 + 1]; |
| return {__ymd.year(), __ymd.month(), __index}; |
| } |
| |
| public: |
| year_month_weekday() = default; |
| |
| constexpr |
| year_month_weekday(const chrono::year& __y, const chrono::month& __m, |
| const chrono::weekday_indexed& __wdi) noexcept |
| : _M_y{__y}, _M_m{__m}, _M_wdi{__wdi} |
| { } |
| |
| constexpr |
| year_month_weekday(const sys_days& __dp) noexcept |
| : year_month_weekday{_S_from_sys_days(__dp)} |
| { } |
| |
| explicit constexpr |
| year_month_weekday(const local_days& __dp) noexcept |
| : year_month_weekday{sys_days{__dp.time_since_epoch()}} |
| { } |
| |
| template<typename = __detail::__months_years_conversion_disambiguator> |
| constexpr year_month_weekday& |
| operator+=(const months& __m) noexcept |
| { |
| *this = *this + __m; |
| return *this; |
| } |
| |
| template<typename = __detail::__months_years_conversion_disambiguator> |
| constexpr year_month_weekday& |
| operator-=(const months& __m) noexcept |
| { |
| *this = *this - __m; |
| return *this; |
| } |
| |
| constexpr year_month_weekday& |
| operator+=(const years& __y) noexcept |
| { |
| *this = *this + __y; |
| return *this; |
| } |
| |
| constexpr year_month_weekday& |
| operator-=(const years& __y) noexcept |
| { |
| *this = *this - __y; |
| return *this; |
| } |
| |
| constexpr chrono::year |
| year() const noexcept |
| { return _M_y; } |
| |
| constexpr chrono::month |
| month() const noexcept |
| { return _M_m; } |
| |
| constexpr chrono::weekday |
| weekday() const noexcept |
| { return _M_wdi.weekday(); } |
| |
| constexpr unsigned |
| index() const noexcept |
| { return _M_wdi.index(); } |
| |
| constexpr chrono::weekday_indexed |
| weekday_indexed() const noexcept |
| { return _M_wdi; } |
| |
| constexpr |
| operator sys_days() const noexcept |
| { |
| auto __d = sys_days{year() / month() / 1}; |
| return __d + (weekday() - chrono::weekday(__d) |
| + days{(static_cast<int>(index())-1)*7}); |
| } |
| |
| explicit constexpr |
| operator local_days() const noexcept |
| { return local_days{sys_days{*this}.time_since_epoch()}; } |
| |
| constexpr bool |
| ok() const noexcept |
| { |
| if (!_M_y.ok() || !_M_m.ok() || !_M_wdi.ok()) |
| return false; |
| if (_M_wdi.index() <= 4) |
| return true; |
| days __d = (_M_wdi.weekday() |
| - chrono::weekday{sys_days{_M_y / _M_m / 1}} |
| + days((_M_wdi.index()-1)*7 + 1)); |
| __glibcxx_assert(__d.count() >= 1); |
| return __d.count() <= unsigned{(_M_y / _M_m / last).day()}; |
| } |
| |
| friend constexpr bool |
| operator==(const year_month_weekday& __x, |
| const year_month_weekday& __y) noexcept |
| { |
| return __x.year() == __y.year() |
| && __x.month() == __y.month() |
| && __x.weekday_indexed() == __y.weekday_indexed(); |
| } |
| |
| template<typename = __detail::__months_years_conversion_disambiguator> |
| friend constexpr year_month_weekday |
| operator+(const year_month_weekday& __ymwd, const months& __dm) noexcept |
| { |
| return ((__ymwd.year() / __ymwd.month() + __dm) |
| / __ymwd.weekday_indexed()); |
| } |
| |
| template<typename = __detail::__months_years_conversion_disambiguator> |
| friend constexpr year_month_weekday |
| operator+(const months& __dm, const year_month_weekday& __ymwd) noexcept |
| { return __ymwd + __dm; } |
| |
| friend constexpr year_month_weekday |
| operator+(const year_month_weekday& __ymwd, const years& __dy) noexcept |
| { return {__ymwd.year() + __dy, __ymwd.month(), __ymwd.weekday_indexed()}; } |
| |
| friend constexpr year_month_weekday |
| operator+(const years& __dy, const year_month_weekday& __ymwd) noexcept |
| { return __ymwd + __dy; } |
| |
| template<typename = __detail::__months_years_conversion_disambiguator> |
| friend constexpr year_month_weekday |
| operator-(const year_month_weekday& __ymwd, const months& __dm) noexcept |
| { return __ymwd + -__dm; } |
| |
| friend constexpr year_month_weekday |
| operator-(const year_month_weekday& __ymwd, const years& __dy) noexcept |
| { return __ymwd + -__dy; } |
| |
| friend constexpr year_month_weekday |
| operator/(const year_month& __ym, |
| const chrono::weekday_indexed& __wdi) noexcept |
| { return {__ym.year(), __ym.month(), __wdi}; } |
| |
| friend constexpr year_month_weekday |
| operator/(const chrono::year& __y, const month_weekday& __mwd) noexcept |
| { return {__y, __mwd.month(), __mwd.weekday_indexed()}; } |
| |
| friend constexpr year_month_weekday |
| operator/(int __y, const month_weekday& __mwd) noexcept |
| { return chrono::year(__y) / __mwd; } |
| |
| friend constexpr year_month_weekday |
| operator/(const month_weekday& __mwd, const chrono::year& __y) noexcept |
| { return __y / __mwd; } |
| |
| friend constexpr year_month_weekday |
| operator/(const month_weekday& __mwd, int __y) noexcept |
| { return chrono::year(__y) / __mwd; } |
| |
| // TODO: Implement operator<<. |
| }; |
| |
| // YEAR_MONTH_WEEKDAY_LAST |
| |
| class year_month_weekday_last |
| { |
| private: |
| chrono::year _M_y; |
| chrono::month _M_m; |
| chrono::weekday_last _M_wdl; |
| |
| public: |
| constexpr |
| year_month_weekday_last(const chrono::year& __y, const chrono::month& __m, |
| const chrono::weekday_last& __wdl) noexcept |
| : _M_y{__y}, _M_m{__m}, _M_wdl{__wdl} |
| { } |
| |
| template<typename = __detail::__months_years_conversion_disambiguator> |
| constexpr year_month_weekday_last& |
| operator+=(const months& __m) noexcept |
| { |
| *this = *this + __m; |
| return *this; |
| } |
| |
| template<typename = __detail::__months_years_conversion_disambiguator> |
| constexpr year_month_weekday_last& |
| operator-=(const months& __m) noexcept |
| { |
| *this = *this - __m; |
| return *this; |
| } |
| |
| constexpr year_month_weekday_last& |
| operator+=(const years& __y) noexcept |
| { |
| *this = *this + __y; |
| return *this; |
| } |
| |
| constexpr year_month_weekday_last& |
| operator-=(const years& __y) noexcept |
| { |
| *this = *this - __y; |
| return *this; |
| } |
| |
| constexpr chrono::year |
| year() const noexcept |
| { return _M_y; } |
| |
| constexpr chrono::month |
| month() const noexcept |
| { return _M_m; } |
| |
| constexpr chrono::weekday |
| weekday() const noexcept |
| { return _M_wdl.weekday(); } |
| |
| constexpr chrono::weekday_last |
| weekday_last() const noexcept |
| { return _M_wdl; } |
| |
| constexpr |
| operator sys_days() const noexcept |
| { |
| const auto __d = sys_days{_M_y / _M_m / last}; |
| return sys_days{(__d - (chrono::weekday{__d} |
| - _M_wdl.weekday())).time_since_epoch()}; |
| } |
| |
| explicit constexpr |
| operator local_days() const noexcept |
| { return local_days{sys_days{*this}.time_since_epoch()}; } |
| |
| constexpr bool |
| ok() const noexcept |
| { return _M_y.ok() && _M_m.ok() && _M_wdl.ok(); } |
| |
| friend constexpr bool |
| operator==(const year_month_weekday_last& __x, |
| const year_month_weekday_last& __y) noexcept |
| { |
| return __x.year() == __y.year() |
| && __x.month() == __y.month() |
| && __x.weekday_last() == __y.weekday_last(); |
| } |
| |
| template<typename = __detail::__months_years_conversion_disambiguator> |
| friend constexpr year_month_weekday_last |
| operator+(const year_month_weekday_last& __ymwdl, |
| const months& __dm) noexcept |
| { |
| return ((__ymwdl.year() / __ymwdl.month() + __dm) |
| / __ymwdl.weekday_last()); |
| } |
| |
| template<typename = __detail::__months_years_conversion_disambiguator> |
| friend constexpr year_month_weekday_last |
| operator+(const months& __dm, |
| const year_month_weekday_last& __ymwdl) noexcept |
| { return __ymwdl + __dm; } |
| |
| friend constexpr year_month_weekday_last |
| operator+(const year_month_weekday_last& __ymwdl, |
| const years& __dy) noexcept |
| { return {__ymwdl.year() + __dy, __ymwdl.month(), __ymwdl.weekday_last()}; } |
| |
| friend constexpr year_month_weekday_last |
| operator+(const years& __dy, |
| const year_month_weekday_last& __ymwdl) noexcept |
| { return __ymwdl + __dy; } |
| |
| template<typename = __detail::__months_years_conversion_disambiguator> |
| friend constexpr year_month_weekday_last |
| operator-(const year_month_weekday_last& __ymwdl, |
| const months& __dm) noexcept |
| { return __ymwdl + -__dm; } |
| |
| friend constexpr year_month_weekday_last |
| operator-(const year_month_weekday_last& __ymwdl, |
| const years& __dy) noexcept |
| { return __ymwdl + -__dy; } |
| |
| friend constexpr year_month_weekday_last |
| operator/(const year_month& __ym, |
| const chrono::weekday_last& __wdl) noexcept |
| { return {__ym.year(), __ym.month(), __wdl}; } |
| |
| friend constexpr year_month_weekday_last |
| operator/(const chrono::year& __y, |
| const chrono::month_weekday_last& __mwdl) noexcept |
| { return {__y, __mwdl.month(), __mwdl.weekday_last()}; } |
| |
| friend constexpr year_month_weekday_last |
| operator/(int __y, const chrono::month_weekday_last& __mwdl) noexcept |
| { return chrono::year(__y) / __mwdl; } |
| |
| friend constexpr year_month_weekday_last |
| operator/(const chrono::month_weekday_last& __mwdl, |
| const chrono::year& __y) noexcept |
| { return __y / __mwdl; } |
| |
| friend constexpr year_month_weekday_last |
| operator/(const chrono::month_weekday_last& __mwdl, int __y) noexcept |
| { return chrono::year(__y) / __mwdl; } |
| |
| // TODO: Implement operator<<. |
| }; |
| |
| // HH_MM_SS |
| |
| namespace __detail |
| { |
| consteval long long |
| __pow10(unsigned __n) |
| { |
| long long __r = 1; |
| while (__n-- > 0) |
| __r *= 10; |
| return __r; |
| } |
| } |
| |
| template<typename _Duration> |
| class hh_mm_ss |
| { |
| private: |
| static constexpr int |
| _S_fractional_width() |
| { |
| int __multiplicity_2 = 0; |
| int __multiplicity_5 = 0; |
| auto __den = _Duration::period::den; |
| while ((__den % 2) == 0) |
| { |
| ++__multiplicity_2; |
| __den /= 2; |
| } |
| while ((__den % 5) == 0) |
| { |
| ++__multiplicity_5; |
| __den /= 5; |
| } |
| if (__den != 1) |
| return 6; |
| |
| int __width = (__multiplicity_2 > __multiplicity_5 |
| ? __multiplicity_2 : __multiplicity_5); |
| if (__width > 18) |
| __width = 18; |
| return __width; |
| } |
| |
| public: |
| static constexpr unsigned fractional_width = {_S_fractional_width()}; |
| |
| using precision |
| = duration<common_type_t<typename _Duration::rep, |
| chrono::seconds::rep>, |
| ratio<1, __detail::__pow10(fractional_width)>>; |
| |
| constexpr |
| hh_mm_ss() noexcept |
| : hh_mm_ss{_Duration::zero()} |
| { } |
| |
| constexpr explicit |
| hh_mm_ss(_Duration __d) noexcept |
| : _M_is_neg (__d < _Duration::zero()), |
| _M_h (duration_cast<chrono::hours>(abs(__d))), |
| _M_m (duration_cast<chrono::minutes>(abs(__d) - hours())), |
| _M_s (duration_cast<chrono::seconds>(abs(__d) - hours() - minutes())) |
| { |
| if constexpr (treat_as_floating_point_v<typename precision::rep>) |
| _M_ss = abs(__d) - hours() - minutes() - seconds(); |
| else |
| _M_ss = duration_cast<precision>(abs(__d) - hours() |
| - minutes() - seconds()); |
| } |
| |
| constexpr bool |
| is_negative() const noexcept |
| { return _M_is_neg; } |
| |
| constexpr chrono::hours |
| hours() const noexcept |
| { return _M_h; } |
| |
| constexpr chrono::minutes |
| minutes() const noexcept |
| { return _M_m; } |
| |
| constexpr chrono::seconds |
| seconds() const noexcept |
| { return _M_s; } |
| |
| constexpr precision |
| subseconds() const noexcept |
| { return _M_ss; } |
| |
| constexpr explicit |
| operator precision() const noexcept |
| { return to_duration(); } |
| |
| constexpr precision |
| to_duration() const noexcept |
| { |
| if (_M_is_neg) |
| return -(_M_h + _M_m + _M_s + _M_ss); |
| else |
| return _M_h + _M_m + _M_s + _M_ss; |
| } |
| |
| // TODO: Implement operator<<. |
| |
| private: |
| bool _M_is_neg; |
| chrono::hours _M_h; |
| chrono::minutes _M_m; |
| chrono::seconds _M_s; |
| precision _M_ss; |
| }; |
| #endif // C++20 |
| |
| /// @} |
| } // namespace chrono |
| |
| #if __cplusplus > 201103L |
| |
| #define __cpp_lib_chrono_udls 201304 |
| |
| inline namespace literals |
| { |
| /** ISO C++ 2014 namespace for suffixes for duration literals. |
| * |
| * These suffixes can be used to create `chrono::duration` values with |
| * tick periods of hours, minutes, seconds, milliseconds, microseconds |
| * or nanoseconds. For example, `std::chrono::seconds(5)` can be written |
| * as `5s` after making the suffix visible in the current scope. |
| * The suffixes can be made visible by a using-directive or |
| * using-declaration such as: |
| * - `using namespace std::chrono_literals;` |
| * - `using namespace std::literals;` |
| * - `using namespace std::chrono;` |
| * - `using namespace std;` |
| * - `using std::chrono_literals::operator""s;` |
| * |
| * The result of these suffixes on an integer literal is one of the |
| * standard typedefs such as `std::chrono::hours`. |
| * The result on a floating-point literal is a duration type with the |
| * specified tick period and an unspecified floating-point representation, |
| * for example `1.5e2ms` might be equivalent to |
| * `chrono::duration<long double, chrono::milli>(1.5e2)`. |
| * |
| * @ingroup chrono |
| */ |
| inline namespace chrono_literals |
| { |
| #pragma GCC diagnostic push |
| #pragma GCC diagnostic ignored "-Wliteral-suffix" |
| /// @cond undocumented |
| template<typename _Dur, char... _Digits> |
| constexpr _Dur __check_overflow() |
| { |
| using _Val = __parse_int::_Parse_int<_Digits...>; |
| constexpr typename _Dur::rep __repval = _Val::value; |
| static_assert(__repval >= 0 && __repval == _Val::value, |
| "literal value cannot be represented by duration type"); |
| return _Dur(__repval); |
| } |
| /// @endcond |
| |
| /// Literal suffix for durations representing non-integer hours |
| constexpr chrono::duration<long double, ratio<3600,1>> |
| operator""h(long double __hours) |
| { return chrono::duration<long double, ratio<3600,1>>{__hours}; } |
| |
| /// Literal suffix for durations of type `std::chrono::hours` |
| template <char... _Digits> |
| constexpr chrono::hours |
| operator""h() |
| { return __check_overflow<chrono::hours, _Digits...>(); } |
| |
| /// Literal suffix for durations representing non-integer minutes |
| constexpr chrono::duration<long double, ratio<60,1>> |
| operator""min(long double __mins) |
| { return chrono::duration<long double, ratio<60,1>>{__mins}; } |
| |
| /// Literal suffix for durations of type `std::chrono::minutes` |
| template <char... _Digits> |
| constexpr chrono::minutes |
| operator""min() |
| { return __check_overflow<chrono::minutes, _Digits...>(); } |
| |
| /// Literal suffix for durations representing non-integer seconds |
| constexpr chrono::duration<long double> |
| operator""s(long double __secs) |
| { return chrono::duration<long double>{__secs}; } |
| |
| /// Literal suffix for durations of type `std::chrono::seconds` |
| template <char... _Digits> |
| constexpr chrono::seconds |
| operator""s() |
| { return __check_overflow<chrono::seconds, _Digits...>(); } |
| |
| /// Literal suffix for durations representing non-integer milliseconds |
| constexpr chrono::duration<long double, milli> |
| operator""ms(long double __msecs) |
| { return chrono::duration<long double, milli>{__msecs}; } |
| |
| /// Literal suffix for durations of type `std::chrono::milliseconds` |
| template <char... _Digits> |
| constexpr chrono::milliseconds |
| operator""ms() |
| { return __check_overflow<chrono::milliseconds, _Digits...>(); } |
| |
| /// Literal suffix for durations representing non-integer microseconds |
| constexpr chrono::duration<long double, micro> |
| operator""us(long double __usecs) |
| { return chrono::duration<long double, micro>{__usecs}; } |
| |
| /// Literal suffix for durations of type `std::chrono::microseconds` |
| template <char... _Digits> |
| constexpr chrono::microseconds |
| operator""us() |
| { return __check_overflow<chrono::microseconds, _Digits...>(); } |
| |
| /// Literal suffix for durations representing non-integer nanoseconds |
| constexpr chrono::duration<long double, nano> |
| operator""ns(long double __nsecs) |
| { return chrono::duration<long double, nano>{__nsecs}; } |
| |
| /// Literal suffix for durations of type `std::chrono::nanoseconds` |
| template <char... _Digits> |
| constexpr chrono::nanoseconds |
| operator""ns() |
| { return __check_overflow<chrono::nanoseconds, _Digits...>(); } |
| |
| #if __cplusplus > 201703L |
| constexpr chrono::day |
| operator""d(unsigned long long __d) noexcept |
| { return chrono::day{static_cast<unsigned>(__d)}; } |
| |
| constexpr chrono::year |
| operator""y(unsigned long long __y) noexcept |
| { return chrono::year{static_cast<int>(__y)}; } |
| #endif // C++20 |
| |
| #pragma GCC diagnostic pop |
| } // inline namespace chrono_literals |
| } // inline namespace literals |
| |
| namespace chrono |
| { |
| using namespace literals::chrono_literals; |
| } // namespace chrono |
| |
| #if __cplusplus > 201703L |
| namespace chrono |
| { |
| // 12/24 HOURS FUNCTIONS |
| |
| constexpr bool |
| is_am(const hours& __h) noexcept |
| { return 0h <= __h && __h <= 11h; } |
| |
| constexpr bool |
| is_pm(const hours& __h) noexcept |
| { return 12h <= __h && __h <= 23h; } |
| |
| constexpr hours |
| make12(const hours& __h) noexcept |
| { |
| if (__h == 0h) |
| return 12h; |
| else if (__h > 12h) |
| return __h - 12h; |
| return __h; |
| } |
| |
| constexpr hours |
| make24(const hours& __h, bool __is_pm) noexcept |
| { |
| if (!__is_pm) |
| { |
| if (__h == 12h) |
| return 0h; |
| else |
| return __h; |
| } |
| else |
| { |
| if (__h == 12h) |
| return __h; |
| else |
| return __h + 12h; |
| } |
| } |
| } |
| #endif |
| |
| #if __cplusplus >= 201703L |
| namespace filesystem |
| { |
| struct __file_clock |
| { |
| using duration = chrono::nanoseconds; |
| using rep = duration::rep; |
| using period = duration::period; |
| using time_point = chrono::time_point<__file_clock>; |
| static constexpr bool is_steady = false; |
| |
| static time_point |
| now() noexcept |
| { return _S_from_sys(chrono::system_clock::now()); } |
| |
| #if __cplusplus > 201703L |
| template<typename _Dur> |
| static |
| chrono::file_time<_Dur> |
| from_sys(const chrono::sys_time<_Dur>& __t) noexcept |
| { return _S_from_sys(__t); } |
| |
| // For internal use only |
| template<typename _Dur> |
| static |
| chrono::sys_time<_Dur> |
| to_sys(const chrono::file_time<_Dur>& __t) noexcept |
| { return _S_to_sys(__t); } |
| #endif // C++20 |
| |
| private: |
| using __sys_clock = chrono::system_clock; |
| |
| // This clock's (unspecified) epoch is 2174-01-01 00:00:00 UTC. |
| // A signed 64-bit duration with nanosecond resolution gives roughly |
| // +/- 292 years, which covers the 1901-2446 date range for ext4. |
| static constexpr chrono::seconds _S_epoch_diff{6437664000}; |
| |
| protected: |
| // For internal use only |
| template<typename _Dur> |
| static |
| chrono::time_point<__file_clock, _Dur> |
| _S_from_sys(const chrono::time_point<__sys_clock, _Dur>& __t) noexcept |
| { |
| using __file_time = chrono::time_point<__file_clock, _Dur>; |
| return __file_time{__t.time_since_epoch()} - _S_epoch_diff; |
| } |
| |
| // For internal use only |
| template<typename _Dur> |
| static |
| chrono::time_point<__sys_clock, _Dur> |
| _S_to_sys(const chrono::time_point<__file_clock, _Dur>& __t) noexcept |
| { |
| using __sys_time = chrono::time_point<__sys_clock, _Dur>; |
| return __sys_time{__t.time_since_epoch()} + _S_epoch_diff; |
| } |
| }; |
| } // namespace filesystem |
| #endif // C++17 |
| #endif // C++14 |
| |
| _GLIBCXX_END_NAMESPACE_VERSION |
| } // namespace std |
| |
| #endif // C++11 |
| |
| #endif //_GLIBCXX_CHRONO |