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// <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. * * @since C++11 */ /** @namespace std::chrono * @brief ISO C++ 2011 namespace for date and time utilities * @ingroup chrono */ namespace chrono { /// @addtogroup chrono /// @{ /// `chrono::duration` represents a distance between two points in time template<typename _Rep, typename _Period = ratio<1>> struct duration; /// `chrono::time_point` represents a point in time as measured by a clock template<typename _Clock, typename _Dur = typename _Clock::duration> struct time_point; /// @} } /// @addtogroup chrono /// @{ // 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 /// @{ /// @relates chrono::duration /// Specialization of common_type for chrono::duration types. 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. 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. 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 /// @{ /// @relates chrono::time_point /// Specialization of common_type for chrono::time_point types. 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. 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. 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 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 std::chrono::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 /** @{ * Arithmetic operators for chrono::duration * @relates std::chrono::duration */ 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); } 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 /** @{ * Comparisons for chrono::duration * @relates std::chrono::duration */ 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); } /// @} /// @cond undocumented #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 /// @endcond /// 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 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); } /// 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(); } /// @} /** @{ * Comparisons for time_point * @relates chrono::time_point */ 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; } constexpr hh_mm_ss(_Duration __d, bool __is_neg) : _M_is_neg(__is_neg), _M_h (duration_cast<chrono::hours>(__d)), _M_m (duration_cast<chrono::minutes>(__d - hours())), _M_s (duration_cast<chrono::seconds>(__d - hours() - minutes())) { auto __ss = __d - hours() - minutes() - seconds(); if constexpr (treat_as_floating_point_v<typename precision::rep>) _M_ss = __ss; else _M_ss = duration_cast<precision>(__ss); } static constexpr _Duration _S_abs(_Duration __d) { if constexpr (numeric_limits<typename _Duration::rep>::is_signed) return chrono::abs(__d); else return __d; } 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) : hh_mm_ss(_S_abs(__d), __d < _Duration::zero()) { } 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 /// @} group chrono } // 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 { /// @addtogroup chrono /// @{ #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 { /// @addtogroup 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; } } /// @} group chrono } // namespace chrono #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