fcc13d6fc3
This is a missing piece of the C++20 <chrono> header. It would be good to move the code into the compiled library, so that we don't need <sstream> in <chrono>. It could also use spanstream in C++20, to avoid memory allocations. That can be changed at a later date. libstdc++-v3/ChangeLog: * include/std/chrono (__detail::__units_suffix_misc): New helper function. (__detail::__units_suffix): Likewise. (chrono::operator<<(basic_ostream&, const duration&)): Define. * testsuite/20_util/duration/io.cc: New test.
2187 lines
58 KiB
C++
2187 lines
58 KiB
C++
// <chrono> -*- C++ -*-
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// Copyright (C) 2008-2021 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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/** @file include/chrono
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* This is a Standard C++ Library header.
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* @ingroup chrono
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*/
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#ifndef _GLIBCXX_CHRONO
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#define _GLIBCXX_CHRONO 1
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#pragma GCC system_header
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#if __cplusplus < 201103L
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# include <bits/c++0x_warning.h>
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#else
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#include <bits/chrono.h>
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#if __cplusplus > 201703L
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# include <sstream> // ostringstream
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# include <bits/charconv.h>
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#endif
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namespace std _GLIBCXX_VISIBILITY(default)
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{
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_GLIBCXX_BEGIN_NAMESPACE_VERSION
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/**
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* @defgroup chrono Time
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* @ingroup utilities
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*
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* Classes and functions for time.
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*
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* @since C++11
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*/
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/** @namespace std::chrono
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* @brief ISO C++ 2011 namespace for date and time utilities
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* @ingroup chrono
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*/
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namespace chrono
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{
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#if __cplusplus >= 202002L
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/// @addtogroup chrono
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/// @{
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struct local_t { };
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template<typename _Duration>
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using local_time = time_point<local_t, _Duration>;
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using local_seconds = local_time<seconds>;
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using local_days = local_time<days>;
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class utc_clock;
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class tai_clock;
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class gps_clock;
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template<typename _Duration>
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using utc_time = time_point<utc_clock, _Duration>;
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using utc_seconds = utc_time<seconds>;
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template<typename _Duration>
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using tai_time = time_point<tai_clock, _Duration>;
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using tai_seconds = tai_time<seconds>;
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template<typename _Duration>
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using gps_time = time_point<gps_clock, _Duration>;
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using gps_seconds = gps_time<seconds>;
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template<> struct is_clock<utc_clock> : true_type { };
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template<> struct is_clock<tai_clock> : true_type { };
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template<> struct is_clock<gps_clock> : true_type { };
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template<> inline constexpr bool is_clock_v<utc_clock> = true;
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template<> inline constexpr bool is_clock_v<tai_clock> = true;
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template<> inline constexpr bool is_clock_v<gps_clock> = true;
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struct leap_second_info
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{
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bool is_leap_second;
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seconds elapsed;
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};
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// CALENDRICAL TYPES
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// CLASS DECLARATIONS
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class day;
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class month;
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class year;
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class weekday;
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class weekday_indexed;
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class weekday_last;
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class month_day;
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class month_day_last;
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class month_weekday;
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class month_weekday_last;
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class year_month;
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class year_month_day;
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class year_month_day_last;
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class year_month_weekday;
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class year_month_weekday_last;
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struct last_spec
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{
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explicit last_spec() = default;
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friend constexpr month_day_last
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operator/(int __m, last_spec) noexcept;
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friend constexpr month_day_last
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operator/(last_spec, int __m) noexcept;
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};
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inline constexpr last_spec last{};
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namespace __detail
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{
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// Compute the remainder of the Euclidean division of __n divided by __d.
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// Euclidean division truncates toward negative infinity and always
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// produces a remainder in the range of [0,__d-1] (whereas standard
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// division truncates toward zero and yields a nonpositive remainder
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// for negative __n).
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constexpr unsigned
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__modulo(long long __n, unsigned __d)
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{
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if (__n >= 0)
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return __n % __d;
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else
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return (__d + (__n % __d)) % __d;
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}
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inline constexpr unsigned __days_per_month[12]
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= { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
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}
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// DAY
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class day
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{
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private:
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unsigned char _M_d;
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public:
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day() = default;
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explicit constexpr
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day(unsigned __d) noexcept
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: _M_d(__d)
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{ }
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constexpr day&
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operator++() noexcept
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{
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++_M_d;
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return *this;
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}
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constexpr day
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operator++(int) noexcept
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{
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auto __ret = *this;
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++(*this);
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return __ret;
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}
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constexpr day&
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operator--() noexcept
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{
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--_M_d;
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return *this;
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}
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constexpr day
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operator--(int) noexcept
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{
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auto __ret = *this;
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--(*this);
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return __ret;
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}
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constexpr day&
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operator+=(const days& __d) noexcept
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{
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*this = *this + __d;
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return *this;
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}
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constexpr day&
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operator-=(const days& __d) noexcept
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{
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*this = *this - __d;
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return *this;
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}
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constexpr explicit
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operator unsigned() const noexcept
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{ return _M_d; }
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constexpr bool
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ok() const noexcept
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{ return 1 <= _M_d && _M_d <= 31; }
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friend constexpr bool
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operator==(const day& __x, const day& __y) noexcept
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{ return unsigned{__x} == unsigned{__y}; }
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friend constexpr strong_ordering
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operator<=>(const day& __x, const day& __y) noexcept
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{ return unsigned{__x} <=> unsigned{__y}; }
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friend constexpr day
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operator+(const day& __x, const days& __y) noexcept
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{ return day(unsigned{__x} + __y.count()); }
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friend constexpr day
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operator+(const days& __x, const day& __y) noexcept
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{ return __y + __x; }
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friend constexpr day
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operator-(const day& __x, const days& __y) noexcept
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{ return __x + -__y; }
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friend constexpr days
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operator-(const day& __x, const day& __y) noexcept
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{ return days{int(unsigned{__x}) - int(unsigned{__y})}; }
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friend constexpr month_day
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operator/(const month& __m, const day& __d) noexcept;
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friend constexpr month_day
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operator/(int __m, const day& __d) noexcept;
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friend constexpr month_day
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operator/(const day& __d, const month& __m) noexcept;
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friend constexpr month_day
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operator/(const day& __d, int __m) noexcept;
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friend constexpr year_month_day
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operator/(const year_month& __ym, const day& __d) noexcept;
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// TODO: Implement operator<<, to_stream, from_stream.
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};
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// MONTH
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class month
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{
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private:
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unsigned char _M_m;
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public:
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month() = default;
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explicit constexpr
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month(unsigned __m) noexcept
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: _M_m(__m)
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{ }
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constexpr month&
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operator++() noexcept
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{
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*this += months{1};
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return *this;
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}
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constexpr month
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operator++(int) noexcept
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{
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auto __ret = *this;
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++(*this);
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return __ret;
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}
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constexpr month&
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operator--() noexcept
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{
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*this -= months{1};
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return *this;
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}
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constexpr month
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operator--(int) noexcept
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{
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auto __ret = *this;
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--(*this);
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return __ret;
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}
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constexpr month&
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operator+=(const months& __m) noexcept
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{
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*this = *this + __m;
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return *this;
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}
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constexpr month&
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operator-=(const months& __m) noexcept
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{
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*this = *this - __m;
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return *this;
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}
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explicit constexpr
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operator unsigned() const noexcept
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{ return _M_m; }
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constexpr bool
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ok() const noexcept
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{ return 1 <= _M_m && _M_m <= 12; }
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friend constexpr bool
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operator==(const month& __x, const month& __y) noexcept
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{ return unsigned{__x} == unsigned{__y}; }
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friend constexpr strong_ordering
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operator<=>(const month& __x, const month& __y) noexcept
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{ return unsigned{__x} <=> unsigned{__y}; }
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friend constexpr month
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operator+(const month& __x, const months& __y) noexcept
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{
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auto __n = static_cast<long long>(unsigned{__x}) + (__y.count() - 1);
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return month{__detail::__modulo(__n, 12) + 1};
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}
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friend constexpr month
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operator+(const months& __x, const month& __y) noexcept
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{ return __y + __x; }
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friend constexpr month
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operator-(const month& __x, const months& __y) noexcept
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{ return __x + -__y; }
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friend constexpr months
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operator-(const month& __x, const month& __y) noexcept
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{
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const auto __dm = int(unsigned(__x)) - int(unsigned(__y));
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return months{__dm < 0 ? 12 + __dm : __dm};
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}
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friend constexpr year_month
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operator/(const year& __y, const month& __m) noexcept;
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friend constexpr month_day
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operator/(const month& __m, int __d) noexcept;
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friend constexpr month_day_last
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operator/(const month& __m, last_spec) noexcept;
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friend constexpr month_day_last
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operator/(last_spec, const month& __m) noexcept;
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friend constexpr month_weekday
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operator/(const month& __m, const weekday_indexed& __wdi) noexcept;
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friend constexpr month_weekday
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operator/(const weekday_indexed& __wdi, const month& __m) noexcept;
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friend constexpr month_weekday_last
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operator/(const month& __m, const weekday_last& __wdl) noexcept;
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friend constexpr month_weekday_last
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operator/(const weekday_last& __wdl, const month& __m) noexcept;
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// TODO: Implement operator<<, to_stream, from_stream.
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};
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inline constexpr month January{1};
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inline constexpr month February{2};
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inline constexpr month March{3};
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inline constexpr month April{4};
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inline constexpr month May{5};
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inline constexpr month June{6};
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inline constexpr month July{7};
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inline constexpr month August{8};
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inline constexpr month September{9};
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inline constexpr month October{10};
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inline constexpr month November{11};
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inline constexpr month December{12};
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// YEAR
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class year
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{
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private:
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short _M_y;
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public:
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year() = default;
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explicit constexpr
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year(int __y) noexcept
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: _M_y{static_cast<short>(__y)}
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{ }
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static constexpr year
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min() noexcept
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{ return year{-32767}; }
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static constexpr year
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max() noexcept
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{ return year{32767}; }
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constexpr year&
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operator++() noexcept
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{
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++_M_y;
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return *this;
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}
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constexpr year
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operator++(int) noexcept
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{
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auto __ret = *this;
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++(*this);
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return __ret;
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}
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constexpr year&
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operator--() noexcept
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{
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--_M_y;
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return *this;
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}
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constexpr year
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operator--(int) noexcept
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{
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auto __ret = *this;
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--(*this);
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return __ret;
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}
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constexpr year&
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operator+=(const years& __y) noexcept
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{
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*this = *this + __y;
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return *this;
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}
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constexpr year&
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operator-=(const years& __y) noexcept
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{
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*this = *this - __y;
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return *this;
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}
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constexpr year
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operator+() const noexcept
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{ return *this; }
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constexpr year
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operator-() const noexcept
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{ return year{-_M_y}; }
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constexpr bool
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is_leap() const noexcept
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{
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// Testing divisibility by 100 first gives better performance, that is,
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// return (_M_y % 100 != 0 || _M_y % 400 == 0) && _M_y % 4 == 0;
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// It gets even faster if _M_y is in [-536870800, 536870999]
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// (which is the case here) and _M_y % 100 is replaced by
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// __is_multiple_of_100 below.
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// References:
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// [1] https://github.com/cassioneri/calendar
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// [2] https://accu.org/journals/overload/28/155/overload155.pdf#page=16
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// Furthermore, if y%100 == 0, then y%400==0 is equivalent to y%16==0,
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// so we can simplify it to (!mult_100 && y % 4 == 0) || y % 16 == 0,
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// which is equivalent to (y & (mult_100 ? 15 : 3)) == 0.
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// See https://gcc.gnu.org/pipermail/libstdc++/2021-June/052815.html
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constexpr uint32_t __multiplier = 42949673;
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constexpr uint32_t __bound = 42949669;
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constexpr uint32_t __max_dividend = 1073741799;
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constexpr uint32_t __offset = __max_dividend / 2 / 100 * 100;
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const bool __is_multiple_of_100
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= __multiplier * (_M_y + __offset) < __bound;
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return (_M_y & (__is_multiple_of_100 ? 15 : 3)) == 0;
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}
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explicit constexpr
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operator int() const noexcept
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{ return _M_y; }
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constexpr bool
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ok() const noexcept
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|
{ return min()._M_y <= _M_y && _M_y <= max()._M_y; }
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friend constexpr bool
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operator==(const year& __x, const year& __y) noexcept
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{ return int{__x} == int{__y}; }
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friend constexpr strong_ordering
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operator<=>(const year& __x, const year& __y) noexcept
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{ return int{__x} <=> int{__y}; }
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friend constexpr year
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operator+(const year& __x, const years& __y) noexcept
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{ return year{int{__x} + static_cast<int>(__y.count())}; }
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friend constexpr year
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operator+(const years& __x, const year& __y) noexcept
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{ return __y + __x; }
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friend constexpr year
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operator-(const year& __x, const years& __y) noexcept
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{ return __x + -__y; }
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friend constexpr years
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operator-(const year& __x, const year& __y) noexcept
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{ return years{int{__x} - int{__y}}; }
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friend constexpr year_month
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operator/(const year& __y, int __m) noexcept;
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friend constexpr year_month_day
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operator/(const year& __y, const month_day& __md) noexcept;
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friend constexpr year_month_day
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operator/(const month_day& __md, const year& __y) noexcept;
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friend constexpr year_month_day_last
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operator/(const year& __y, const month_day_last& __mdl) noexcept;
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friend constexpr year_month_day_last
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operator/(const month_day_last& __mdl, const year& __y) noexcept;
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friend constexpr year_month_weekday
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operator/(const year& __y, const month_weekday& __mwd) noexcept;
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friend constexpr year_month_weekday
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operator/(const month_weekday& __mwd, const year& __y) noexcept;
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friend constexpr year_month_weekday_last
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operator/(const year& __y, const month_weekday_last& __mwdl) noexcept;
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friend constexpr year_month_weekday_last
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operator/(const month_weekday_last& __mwdl, const year& __y) noexcept;
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|
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// TODO: Implement operator<<, to_stream, from_stream.
|
|
};
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|
|
// WEEKDAY
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|
|
|
class weekday
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{
|
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private:
|
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unsigned char _M_wd;
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|
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static constexpr weekday
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|
_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;
|
|
};
|
|
|
|
// 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
|
|
#endif // C++20
|
|
} // namespace chrono
|
|
|
|
#if __cplusplus >= 202002L
|
|
inline namespace literals
|
|
{
|
|
inline namespace chrono_literals
|
|
{
|
|
/// @addtogroup chrono
|
|
/// @{
|
|
#pragma GCC diagnostic push
|
|
#pragma GCC diagnostic ignored "-Wliteral-suffix"
|
|
/// Literal suffix for creating chrono::day objects.
|
|
/// @since C++20
|
|
constexpr chrono::day
|
|
operator""d(unsigned long long __d) noexcept
|
|
{ return chrono::day{static_cast<unsigned>(__d)}; }
|
|
|
|
/// Literal suffix for creating chrono::year objects.
|
|
/// @since C++20
|
|
constexpr chrono::year
|
|
operator""y(unsigned long long __y) noexcept
|
|
{ return chrono::year{static_cast<int>(__y)}; }
|
|
#pragma GCC diagnostic pop
|
|
/// @}
|
|
} // inline namespace chrono_literals
|
|
} // inline namespace literals
|
|
|
|
namespace chrono
|
|
{
|
|
/// @addtogroup chrono
|
|
/// @{
|
|
|
|
/// @cond undocumented
|
|
namespace __detail
|
|
{
|
|
template<typename _Period>
|
|
const char*
|
|
__units_suffix_misc(char* __buf, size_t __n) noexcept
|
|
{
|
|
namespace __tc = std::__detail;
|
|
char* __p = __buf;
|
|
__p[0] = '[';
|
|
unsigned __nlen = __tc::__to_chars_len((uintmax_t)_Period::num);
|
|
__tc::__to_chars_10_impl(__p + 1, __nlen, (uintmax_t)_Period::num);
|
|
__p += 1 + __nlen;
|
|
if constexpr (_Period::den != 1)
|
|
{
|
|
__p[0] = '/';
|
|
unsigned __dlen = __tc::__to_chars_len((uintmax_t)_Period::den);
|
|
__tc::__to_chars_10_impl(__p + 1, __dlen, (uintmax_t)_Period::den);
|
|
__p += 1 + __dlen;
|
|
}
|
|
__p[0] = ']';
|
|
__p[1] = 's';
|
|
__p[2] = '\0';
|
|
return __buf;
|
|
}
|
|
|
|
template<typename _Period, typename _CharT>
|
|
auto
|
|
__units_suffix(char* __buf, size_t __n) noexcept
|
|
{
|
|
#define _GLIBCXX_UNITS_SUFFIX(period, suffix) \
|
|
if constexpr (is_same_v<_Period, period>) \
|
|
{ \
|
|
if constexpr (is_same_v<_CharT, wchar_t>) \
|
|
return L##suffix; \
|
|
else \
|
|
return suffix; \
|
|
} \
|
|
else
|
|
|
|
_GLIBCXX_UNITS_SUFFIX(atto, "as")
|
|
_GLIBCXX_UNITS_SUFFIX(femto, "fs")
|
|
_GLIBCXX_UNITS_SUFFIX(pico, "ps")
|
|
_GLIBCXX_UNITS_SUFFIX(nano, "ns")
|
|
_GLIBCXX_UNITS_SUFFIX(micro, "\u00b5s")
|
|
_GLIBCXX_UNITS_SUFFIX(milli, "ms")
|
|
_GLIBCXX_UNITS_SUFFIX(centi, "cs")
|
|
_GLIBCXX_UNITS_SUFFIX(deci, "ds")
|
|
_GLIBCXX_UNITS_SUFFIX(ratio<1>, "s")
|
|
_GLIBCXX_UNITS_SUFFIX(deca, "das")
|
|
_GLIBCXX_UNITS_SUFFIX(hecto, "hs")
|
|
_GLIBCXX_UNITS_SUFFIX(kilo, "ks")
|
|
_GLIBCXX_UNITS_SUFFIX(mega, "Ms")
|
|
_GLIBCXX_UNITS_SUFFIX(giga, "Gs")
|
|
_GLIBCXX_UNITS_SUFFIX(tera, "Ts")
|
|
_GLIBCXX_UNITS_SUFFIX(tera, "Ts")
|
|
_GLIBCXX_UNITS_SUFFIX(peta, "Ps")
|
|
_GLIBCXX_UNITS_SUFFIX(exa, "Es")
|
|
_GLIBCXX_UNITS_SUFFIX(ratio<60>, "min")
|
|
_GLIBCXX_UNITS_SUFFIX(ratio<3600>, "h")
|
|
_GLIBCXX_UNITS_SUFFIX(ratio<86400>, "d")
|
|
#undef _GLIBCXX_UNITS_SUFFIX
|
|
return __detail::__units_suffix_misc<_Period>(__buf, __n);
|
|
}
|
|
} // namespace __detail
|
|
/// @endcond
|
|
|
|
template<typename _CharT, typename _Traits,
|
|
typename _Rep, typename _Period>
|
|
inline basic_ostream<_CharT, _Traits>&
|
|
operator<<(std::basic_ostream<_CharT, _Traits>& __os,
|
|
const duration<_Rep, _Period>& __d)
|
|
{
|
|
using period = typename _Period::type;
|
|
char __buf[sizeof("[/]s") + 2 * numeric_limits<intmax_t>::digits10];
|
|
std::basic_ostringstream<_CharT, _Traits> __s;
|
|
__s.flags(__os.flags());
|
|
__s.imbue(__os.getloc());
|
|
__s.precision(__os.precision());
|
|
__s << __d.count();
|
|
__s << __detail::__units_suffix<period, _CharT>(__buf, sizeof(__buf));
|
|
__os << std::move(__s).str();
|
|
return __os;
|
|
}
|
|
|
|
// TODO: from_stream for duration
|
|
|
|
/// @} group chrono
|
|
} // namespace chrono
|
|
#endif // C++20
|
|
|
|
_GLIBCXX_END_NAMESPACE_VERSION
|
|
} // namespace std
|
|
|
|
#endif // C++11
|
|
|
|
#endif //_GLIBCXX_CHRONO
|