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0001 // -*- C++ -*-
0002 //===----------------------------------------------------------------------===//
0003 //
0004 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
0005 // See https://llvm.org/LICENSE.txt for license information.
0006 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
0007 //
0008 //===----------------------------------------------------------------------===//
0009
0010 #ifndef _LIBCPP___CXX03_CHRONO
0011 #define _LIBCPP___CXX03_CHRONO
0012
0013 // clang-format off
0014
0015 /*
0016 chrono synopsis
0017
0018 #include <__cxx03/compare> // C++20
0019
0020 namespace std
0021 {
0022 namespace chrono
0023 {
0024
0025 template <class ToDuration, class Rep, class Period>
0026 constexpr
0027 ToDuration
0028 duration_cast(const duration<Rep, Period>& fd);
0029
0030 template <class Rep> struct treat_as_floating_point : is_floating_point<Rep> {};
0031
0032 template <class Rep> inline constexpr bool treat_as_floating_point_v
0033 = treat_as_floating_point<Rep>::value; // C++17
0034
0035 template <class Rep>
0036 struct duration_values
0037 {
0038 public:
0039 static constexpr Rep zero(); // noexcept in C++20
0040 static constexpr Rep max(); // noexcept in C++20
0041 static constexpr Rep min(); // noexcept in C++20
0042 };
0043
0044 // duration
0045
0046 template <class Rep, class Period = ratio<1>>
0047 class duration
0048 {
0049 static_assert(!__is_duration<Rep>::value, "A duration representation can not be a duration");
0050 static_assert(__is_ratio<Period>::value, "Second template parameter of duration must be a std::ratio");
0051 static_assert(Period::num > 0, "duration period must be positive");
0052 public:
0053 typedef Rep rep;
0054 typedef typename _Period::type period;
0055
0056 constexpr duration() = default;
0057 template <class Rep2>
0058 constexpr explicit duration(const Rep2& r,
0059 typename enable_if
0060 <
0061 is_convertible<const Rep2&, rep>::value &&
0062 (treat_as_floating_point<rep>::value ||
0063 !treat_as_floating_point<rep>::value && !treat_as_floating_point<Rep2>::value)
0064 >::type* = 0);
0065
0066 // conversions
0067 template <class Rep2, class Period2>
0068 constexpr duration(const duration<Rep2, Period2>& d,
0069 typename enable_if
0070 <
0071 treat_as_floating_point<rep>::value ||
0072 ratio_divide<Period2, period>::type::den == 1
0073 >::type* = 0);
0074
0075 // observer
0076
0077 constexpr rep count() const;
0078
0079 // arithmetic
0080
0081 constexpr common_type<duration>::type operator+() const;
0082 constexpr common_type<duration>::type operator-() const;
0083 constexpr duration& operator++(); // constexpr in C++17
0084 constexpr duration operator++(int); // constexpr in C++17
0085 constexpr duration& operator--(); // constexpr in C++17
0086 constexpr duration operator--(int); // constexpr in C++17
0087
0088 constexpr duration& operator+=(const duration& d); // constexpr in C++17
0089 constexpr duration& operator-=(const duration& d); // constexpr in C++17
0090
0091 duration& operator*=(const rep& rhs); // constexpr in C++17
0092 duration& operator/=(const rep& rhs); // constexpr in C++17
0093 duration& operator%=(const rep& rhs); // constexpr in C++17
0094 duration& operator%=(const duration& rhs); // constexpr in C++17
0095
0096 // special values
0097
0098 static constexpr duration zero(); // noexcept in C++20
0099 static constexpr duration min(); // noexcept in C++20
0100 static constexpr duration max(); // noexcept in C++20
0101 };
0102
0103 typedef duration<long long, nano> nanoseconds;
0104 typedef duration<long long, micro> microseconds;
0105 typedef duration<long long, milli> milliseconds;
0106 typedef duration<long long > seconds;
0107 typedef duration< long, ratio< 60> > minutes;
0108 typedef duration< long, ratio<3600> > hours;
0109
0110 template <class Clock, class Duration = typename Clock::duration>
0111 class time_point
0112 {
0113 public:
0114 typedef Clock clock;
0115 typedef Duration duration;
0116 typedef typename duration::rep rep;
0117 typedef typename duration::period period;
0118 private:
0119 duration d_; // exposition only
0120
0121 public:
0122 time_point(); // has value "epoch" // constexpr in C++14
0123 explicit time_point(const duration& d); // same as time_point() + d // constexpr in C++14
0124
0125 // conversions
0126 template <class Duration2>
0127 time_point(const time_point<clock, Duration2>& t); // constexpr in C++14
0128
0129 // observer
0130
0131 duration time_since_epoch() const; // constexpr in C++14
0132
0133 // arithmetic
0134
0135 time_point& operator+=(const duration& d); // constexpr in C++17
0136 time_point& operator-=(const duration& d); // constexpr in C++17
0137
0138 // special values
0139
0140 static constexpr time_point min(); // noexcept in C++20
0141 static constexpr time_point max(); // noexcept in C++20
0142 };
0143
0144 } // chrono
0145
0146 // common_type traits
0147 template <class Rep1, class Period1, class Rep2, class Period2>
0148 struct common_type<chrono::duration<Rep1, Period1>, chrono::duration<Rep2, Period2>>;
0149
0150 template <class Clock, class Duration1, class Duration2>
0151 struct common_type<chrono::time_point<Clock, Duration1>, chrono::time_point<Clock, Duration2>>;
0152
0153 namespace chrono {
0154
0155 // duration arithmetic
0156 template <class Rep1, class Period1, class Rep2, class Period2>
0157 constexpr
0158 typename common_type<duration<Rep1, Period1>, duration<Rep2, Period2>>::type
0159 operator+(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
0160 template <class Rep1, class Period1, class Rep2, class Period2>
0161 constexpr
0162 typename common_type<duration<Rep1, Period1>, duration<Rep2, Period2>>::type
0163 operator-(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
0164 template <class Rep1, class Period, class Rep2>
0165 constexpr
0166 duration<typename common_type<Rep1, Rep2>::type, Period>
0167 operator*(const duration<Rep1, Period>& d, const Rep2& s);
0168 template <class Rep1, class Period, class Rep2>
0169 constexpr
0170 duration<typename common_type<Rep1, Rep2>::type, Period>
0171 operator*(const Rep1& s, const duration<Rep2, Period>& d);
0172 template <class Rep1, class Period, class Rep2>
0173 constexpr
0174 duration<typename common_type<Rep1, Rep2>::type, Period>
0175 operator/(const duration<Rep1, Period>& d, const Rep2& s);
0176 template <class Rep1, class Period1, class Rep2, class Period2>
0177 constexpr
0178 typename common_type<Rep1, Rep2>::type
0179 operator/(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
0180
0181 // duration comparisons
0182 template <class Rep1, class Period1, class Rep2, class Period2>
0183 constexpr
0184 bool operator==(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
0185 template <class Rep1, class Period1, class Rep2, class Period2>
0186 constexpr
0187 bool operator!=(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); // removed in C++20
0188 template <class Rep1, class Period1, class Rep2, class Period2>
0189 constexpr
0190 bool operator< (const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
0191 template <class Rep1, class Period1, class Rep2, class Period2>
0192 constexpr
0193 bool operator<=(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
0194 template <class Rep1, class Period1, class Rep2, class Period2>
0195 constexpr
0196 bool operator> (const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
0197 template <class Rep1, class Period1, class Rep2, class Period2>
0198 constexpr
0199 bool operator>=(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
0200 template<class Rep1, class Period1, class Rep2, class Period2>
0201 requires three_way_comparable<typename CT::rep>
0202 constexpr auto operator<=>(const duration<Rep1, Period1>& lhs,
0203 const duration<Rep2, Period2>& rhs); // since C++20
0204
0205 // duration_cast
0206 template <class ToDuration, class Rep, class Period>
0207 ToDuration duration_cast(const duration<Rep, Period>& d);
0208
0209 template <class ToDuration, class Rep, class Period>
0210 constexpr ToDuration floor(const duration<Rep, Period>& d); // C++17
0211 template <class ToDuration, class Rep, class Period>
0212 constexpr ToDuration ceil(const duration<Rep, Period>& d); // C++17
0213 template <class ToDuration, class Rep, class Period>
0214 constexpr ToDuration round(const duration<Rep, Period>& d); // C++17
0215
0216 // duration I/O
0217 template<class charT, class traits, class Rep, class Period> // C++20
0218 basic_ostream<charT, traits>&
0219 operator<<(basic_ostream<charT, traits>& os,
0220 const duration<Rep, Period>& d);
0221
0222 // time_point arithmetic (all constexpr in C++14)
0223 template <class Clock, class Duration1, class Rep2, class Period2>
0224 time_point<Clock, typename common_type<Duration1, duration<Rep2, Period2>>::type>
0225 operator+(const time_point<Clock, Duration1>& lhs, const duration<Rep2, Period2>& rhs);
0226 template <class Rep1, class Period1, class Clock, class Duration2>
0227 time_point<Clock, typename common_type<duration<Rep1, Period1>, Duration2>::type>
0228 operator+(const duration<Rep1, Period1>& lhs, const time_point<Clock, Duration2>& rhs);
0229 template <class Clock, class Duration1, class Rep2, class Period2>
0230 time_point<Clock, typename common_type<Duration1, duration<Rep2, Period2>>::type>
0231 operator-(const time_point<Clock, Duration1>& lhs, const duration<Rep2, Period2>& rhs);
0232 template <class Clock, class Duration1, class Duration2>
0233 typename common_type<Duration1, Duration2>::type
0234 operator-(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
0235
0236 // time_point comparisons (all constexpr in C++14)
0237 template <class Clock, class Duration1, class Duration2>
0238 bool operator==(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
0239 template <class Clock, class Duration1, class Duration2>
0240 bool operator!=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); // removed in C++20
0241 template <class Clock, class Duration1, class Duration2>
0242 bool operator< (const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
0243 template <class Clock, class Duration1, class Duration2>
0244 bool operator<=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
0245 template <class Clock, class Duration1, class Duration2>
0246 bool operator> (const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
0247 template <class Clock, class Duration1, class Duration2>
0248 bool operator>=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
0249 template<class Clock, class Duration1,
0250 three_way_comparable_with<Duration1> Duration2>
0251 constexpr auto operator<=>(const time_point<Clock, Duration1>& lhs,
0252 const time_point<Clock, Duration2>& rhs); // since C++20
0253
0254 // time_point_cast (constexpr in C++14)
0255
0256 template <class ToDuration, class Clock, class Duration>
0257 time_point<Clock, ToDuration> time_point_cast(const time_point<Clock, Duration>& t);
0258
0259 template <class ToDuration, class Clock, class Duration>
0260 constexpr time_point<Clock, ToDuration>
0261 floor(const time_point<Clock, Duration>& tp); // C++17
0262
0263 template <class ToDuration, class Clock, class Duration>
0264 constexpr time_point<Clock, ToDuration>
0265 ceil(const time_point<Clock, Duration>& tp); // C++17
0266
0267 template <class ToDuration, class Clock, class Duration>
0268 constexpr time_point<Clock, ToDuration>
0269 round(const time_point<Clock, Duration>& tp); // C++17
0270
0271 template <class Rep, class Period>
0272 constexpr duration<Rep, Period> abs(duration<Rep, Period> d); // C++17
0273
0274 // Clocks
0275
0276 class system_clock
0277 {
0278 public:
0279 typedef microseconds duration;
0280 typedef duration::rep rep;
0281 typedef duration::period period;
0282 typedef chrono::time_point<system_clock> time_point;
0283 static const bool is_steady = false; // constexpr in C++14
0284
0285 static time_point now() noexcept;
0286 static time_t to_time_t (const time_point& __t) noexcept;
0287 static time_point from_time_t(time_t __t) noexcept;
0288 };
0289
0290 template <class Duration>
0291 using sys_time = time_point<system_clock, Duration>; // C++20
0292 using sys_seconds = sys_time<seconds>; // C++20
0293 using sys_days = sys_time<days>; // C++20
0294
0295 template<class charT, class traits, class Duration> // C++20
0296 basic_ostream<charT, traits>&
0297 operator<<(basic_ostream<charT, traits>& os, const sys_time<Duration>& tp);
0298
0299 template<class charT, class traits> // C++20
0300 basic_ostream<charT, traits>&
0301 operator<<(basic_ostream<charT, traits>& os, const sys_days& dp);
0302
0303 class file_clock // C++20
0304 {
0305 public:
0306 typedef see-below rep;
0307 typedef nano period;
0308 typedef chrono::duration<rep, period> duration;
0309 typedef chrono::time_point<file_clock> time_point;
0310 static constexpr bool is_steady = false;
0311
0312 static time_point now() noexcept;
0313
0314 template<class Duration>
0315 static sys_time<see-below> to_sys(const file_time<Duration>&);
0316
0317 template<class Duration>
0318 static file_time<see-below> from_sys(const sys_time<Duration>&);
0319 };
0320
0321 template<class Duration>
0322 using file_time = time_point<file_clock, Duration>; // C++20
0323
0324 template<class charT, class traits, class Duration> // C++20
0325 basic_ostream<charT, traits>&
0326 operator<<(basic_ostream<charT, traits>& os, const file_time<Duration>& tp);
0327
0328 class steady_clock
0329 {
0330 public:
0331 typedef nanoseconds duration;
0332 typedef duration::rep rep;
0333 typedef duration::period period;
0334 typedef chrono::time_point<steady_clock, duration> time_point;
0335 static const bool is_steady = true; // constexpr in C++14
0336
0337 static time_point now() noexcept;
0338 };
0339
0340 typedef steady_clock high_resolution_clock;
0341
0342 // 25.7.8, local time // C++20
0343 struct local_t {};
0344 template<class Duration>
0345 using local_time = time_point<local_t, Duration>;
0346 using local_seconds = local_time<seconds>;
0347 using local_days = local_time<days>;
0348
0349 template<class charT, class traits, class Duration> // C++20
0350 basic_ostream<charT, traits>&
0351 operator<<(basic_ostream<charT, traits>& os, const local_time<Duration>& tp);
0352
0353 // 25.8.2, class last_spec // C++20
0354 struct last_spec;
0355
0356 // 25.8.3, class day // C++20
0357
0358 class day;
0359 constexpr bool operator==(const day& x, const day& y) noexcept;
0360 constexpr strong_ordering operator<=>(const day& x, const day& y) noexcept;
0361 constexpr day operator+(const day& x, const days& y) noexcept;
0362 constexpr day operator+(const days& x, const day& y) noexcept;
0363 constexpr day operator-(const day& x, const days& y) noexcept;
0364 constexpr days operator-(const day& x, const day& y) noexcept;
0365 template<class charT, class traits>
0366 basic_ostream<charT, traits>&
0367 operator<<(basic_ostream<charT, traits>& os, const day& d);
0368
0369 // 25.8.4, class month // C++20
0370 class month;
0371 constexpr bool operator==(const month& x, const month& y) noexcept;
0372 constexpr strong_ordering operator<=>(const month& x, const month& y) noexcept;
0373
0374 constexpr month operator+(const month& x, const months& y) noexcept;
0375 constexpr month operator+(const months& x, const month& y) noexcept;
0376 constexpr month operator-(const month& x, const months& y) noexcept;
0377 constexpr months operator-(const month& x, const month& y) noexcept;
0378 template<class charT, class traits>
0379 basic_ostream<charT, traits>&
0380 operator<<(basic_ostream<charT, traits>& os, const month& m);
0381
0382 // 25.8.5, class year // C++20
0383 class year;
0384 constexpr bool operator==(const year& x, const year& y) noexcept;
0385 constexpr strong_ordering operator<=>(const year& x, const year& y) noexcept;
0386
0387 constexpr year operator+(const year& x, const years& y) noexcept;
0388 constexpr year operator+(const years& x, const year& y) noexcept;
0389 constexpr year operator-(const year& x, const years& y) noexcept;
0390 constexpr years operator-(const year& x, const year& y) noexcept;
0391 template<class charT, class traits>
0392 basic_ostream<charT, traits>&
0393 operator<<(basic_ostream<charT, traits>& os, const year& y);
0394
0395 // 25.8.6, class weekday // C++20
0396 class weekday;
0397
0398 constexpr bool operator==(const weekday& x, const weekday& y) noexcept;
0399 constexpr weekday operator+(const weekday& x, const days& y) noexcept;
0400 constexpr weekday operator+(const days& x, const weekday& y) noexcept;
0401 constexpr weekday operator-(const weekday& x, const days& y) noexcept;
0402 constexpr days operator-(const weekday& x, const weekday& y) noexcept;
0403 template<class charT, class traits>
0404 basic_ostream<charT, traits>&
0405 operator<<(basic_ostream<charT, traits>& os, const weekday& wd);
0406
0407 // 25.8.7, class weekday_indexed // C++20
0408
0409 class weekday_indexed;
0410 constexpr bool operator==(const weekday_indexed& x, const weekday_indexed& y) noexcept;
0411
0412 template<class charT, class traits>
0413 basic_ostream<charT, traits>&
0414 operator<<(basic_ostream<charT, traits>& os, const weekday_indexed& wdi);
0415
0416 // 25.8.8, class weekday_last // C++20
0417 class weekday_last;
0418
0419 constexpr bool operator==(const weekday_last& x, const weekday_last& y) noexcept;
0420
0421 template<class charT, class traits>
0422 basic_ostream<charT, traits>&
0423 operator<<(basic_ostream<charT, traits>& os, const weekday_last& wdl);
0424
0425 // 25.8.9, class month_day // C++20
0426 class month_day;
0427
0428 constexpr bool operator==(const month_day& x, const month_day& y) noexcept;
0429 constexpr strong_ordering operator<=>(const month_day& x, const month_day& y) noexcept;
0430
0431 template<class charT, class traits>
0432 basic_ostream<charT, traits>&
0433 operator<<(basic_ostream<charT, traits>& os, const month_day& md);
0434
0435 // 25.8.10, class month_day_last // C++20
0436 class month_day_last;
0437
0438 constexpr bool operator==(const month_day_last& x, const month_day_last& y) noexcept;
0439 constexpr strong_ordering operator<=>(const month_day_last& x, const month_day_last& y) noexcept;
0440
0441 template<class charT, class traits>
0442 basic_ostream<charT, traits>&
0443 operator<<(basic_ostream<charT, traits>& os, const month_day_last& mdl);
0444
0445 // 25.8.11, class month_weekday // C++20
0446 class month_weekday;
0447
0448 constexpr bool operator==(const month_weekday& x, const month_weekday& y) noexcept;
0449
0450 template<class charT, class traits>
0451 basic_ostream<charT, traits>&
0452 operator<<(basic_ostream<charT, traits>& os, const month_weekday& mwd);
0453
0454 // 25.8.12, class month_weekday_last // C++20
0455 class month_weekday_last;
0456
0457 constexpr bool operator==(const month_weekday_last& x, const month_weekday_last& y) noexcept;
0458
0459 template<class charT, class traits>
0460 basic_ostream<charT, traits>&
0461 operator<<(basic_ostream<charT, traits>& os, const month_weekday_last& mwdl);
0462
0463
0464 // 25.8.13, class year_month // C++20
0465 class year_month;
0466
0467 constexpr bool operator==(const year_month& x, const year_month& y) noexcept;
0468 constexpr strong_ordering operator<=>(const year_month& x, const year_month& y) noexcept;
0469
0470 constexpr year_month operator+(const year_month& ym, const months& dm) noexcept;
0471 constexpr year_month operator+(const months& dm, const year_month& ym) noexcept;
0472 constexpr year_month operator-(const year_month& ym, const months& dm) noexcept;
0473 constexpr months operator-(const year_month& x, const year_month& y) noexcept;
0474 constexpr year_month operator+(const year_month& ym, const years& dy) noexcept;
0475 constexpr year_month operator+(const years& dy, const year_month& ym) noexcept;
0476 constexpr year_month operator-(const year_month& ym, const years& dy) noexcept;
0477
0478 template<class charT, class traits>
0479 basic_ostream<charT, traits>&
0480 operator<<(basic_ostream<charT, traits>& os, const year_month& ym);
0481
0482 // 25.8.14, class year_month_day class // C++20
0483 year_month_day;
0484
0485 constexpr bool operator==(const year_month_day& x, const year_month_day& y) noexcept;
0486 constexpr strong_ordering operator<=>(const year_month_day& x, const year_month_day& y) noexcept;
0487
0488 constexpr year_month_day operator+(const year_month_day& ymd, const months& dm) noexcept;
0489 constexpr year_month_day operator+(const months& dm, const year_month_day& ymd) noexcept;
0490 constexpr year_month_day operator+(const year_month_day& ymd, const years& dy) noexcept;
0491 constexpr year_month_day operator+(const years& dy, const year_month_day& ymd) noexcept;
0492 constexpr year_month_day operator-(const year_month_day& ymd, const months& dm) noexcept;
0493 constexpr year_month_day operator-(const year_month_day& ymd, const years& dy) noexcept;
0494
0495 template<class charT, class traits>
0496 basic_ostream<charT, traits>&
0497 operator<<(basic_ostream<charT, traits>& os, const year_month_day& ymd);
0498
0499 // 25.8.15, class year_month_day_last // C++20
0500 class year_month_day_last;
0501
0502 constexpr bool operator==(const year_month_day_last& x, const year_month_day_last& y) noexcept;
0503 constexpr strong_ordering operator<=>(const year_month_day_last_day& x, const year_month_day_last_day& y) noexcept;
0504
0505 constexpr year_month_day_last
0506 operator+(const year_month_day_last& ymdl, const months& dm) noexcept;
0507 constexpr year_month_day_last
0508 operator+(const months& dm, const year_month_day_last& ymdl) noexcept;
0509 constexpr year_month_day_last
0510 operator+(const year_month_day_last& ymdl, const years& dy) noexcept;
0511 constexpr year_month_day_last
0512 operator+(const years& dy, const year_month_day_last& ymdl) noexcept;
0513 constexpr year_month_day_last
0514 operator-(const year_month_day_last& ymdl, const months& dm) noexcept;
0515 constexpr year_month_day_last
0516 operator-(const year_month_day_last& ymdl, const years& dy) noexcept;
0517
0518 template<class charT, class traits>
0519 basic_ostream<charT, traits>&
0520 operator<<(basic_ostream<charT, traits>& os, const year_month_day_last& ymdl);
0521
0522 // 25.8.16, class year_month_weekday // C++20
0523 class year_month_weekday;
0524
0525 constexpr bool operator==(const year_month_weekday& x,
0526 const year_month_weekday& y) noexcept;
0527
0528 constexpr year_month_weekday
0529 operator+(const year_month_weekday& ymwd, const months& dm) noexcept;
0530 constexpr year_month_weekday
0531 operator+(const months& dm, const year_month_weekday& ymwd) noexcept;
0532 constexpr year_month_weekday
0533 operator+(const year_month_weekday& ymwd, const years& dy) noexcept;
0534 constexpr year_month_weekday
0535 operator+(const years& dy, const year_month_weekday& ymwd) noexcept;
0536 constexpr year_month_weekday
0537 operator-(const year_month_weekday& ymwd, const months& dm) noexcept;
0538 constexpr year_month_weekday
0539 operator-(const year_month_weekday& ymwd, const years& dy) noexcept;
0540
0541 template<class charT, class traits>
0542 basic_ostream<charT, traits>&
0543 operator<<(basic_ostream<charT, traits>& os, const year_month_weekday& ymwd);
0544
0545 // 25.8.17, class year_month_weekday_last // C++20
0546 class year_month_weekday_last;
0547
0548 constexpr bool operator==(const year_month_weekday_last& x,
0549 const year_month_weekday_last& y) noexcept;
0550 constexpr year_month_weekday_last
0551 operator+(const year_month_weekday_last& ymwdl, const months& dm) noexcept;
0552 constexpr year_month_weekday_last
0553 operator+(const months& dm, const year_month_weekday_last& ymwdl) noexcept;
0554 constexpr year_month_weekday_last
0555 operator+(const year_month_weekday_last& ymwdl, const years& dy) noexcept;
0556 constexpr year_month_weekday_last
0557 operator+(const years& dy, const year_month_weekday_last& ymwdl) noexcept;
0558 constexpr year_month_weekday_last
0559 operator-(const year_month_weekday_last& ymwdl, const months& dm) noexcept;
0560 constexpr year_month_weekday_last
0561 operator-(const year_month_weekday_last& ymwdl, const years& dy) noexcept;
0562
0563 template<class charT, class traits>
0564 basic_ostream<charT, traits>&
0565 operator<<(basic_ostream<charT, traits>& os, const year_month_weekday_last& ymwdl);
0566
0567 // 25.8.18, civil calendar conventional syntax operators // C++20
0568 constexpr year_month
0569 operator/(const year& y, const month& m) noexcept;
0570 constexpr year_month
0571 operator/(const year& y, int m) noexcept;
0572 constexpr month_day
0573 operator/(const month& m, const day& d) noexcept;
0574 constexpr month_day
0575 operator/(const month& m, int d) noexcept;
0576 constexpr month_day
0577 operator/(int m, const day& d) noexcept;
0578 constexpr month_day
0579 operator/(const day& d, const month& m) noexcept;
0580 constexpr month_day
0581 operator/(const day& d, int m) noexcept;
0582 constexpr month_day_last
0583 operator/(const month& m, last_spec) noexcept;
0584 constexpr month_day_last
0585 operator/(int m, last_spec) noexcept;
0586 constexpr month_day_last
0587 operator/(last_spec, const month& m) noexcept;
0588 constexpr month_day_last
0589 operator/(last_spec, int m) noexcept;
0590 constexpr month_weekday
0591 operator/(const month& m, const weekday_indexed& wdi) noexcept;
0592 constexpr month_weekday
0593 operator/(int m, const weekday_indexed& wdi) noexcept;
0594 constexpr month_weekday
0595 operator/(const weekday_indexed& wdi, const month& m) noexcept;
0596 constexpr month_weekday
0597 operator/(const weekday_indexed& wdi, int m) noexcept;
0598 constexpr month_weekday_last
0599 operator/(const month& m, const weekday_last& wdl) noexcept;
0600 constexpr month_weekday_last
0601 operator/(int m, const weekday_last& wdl) noexcept;
0602 constexpr month_weekday_last
0603 operator/(const weekday_last& wdl, const month& m) noexcept;
0604 constexpr month_weekday_last
0605 operator/(const weekday_last& wdl, int m) noexcept;
0606 constexpr year_month_day
0607 operator/(const year_month& ym, const day& d) noexcept;
0608 constexpr year_month_day
0609 operator/(const year_month& ym, int d) noexcept;
0610 constexpr year_month_day
0611 operator/(const year& y, const month_day& md) noexcept;
0612 constexpr year_month_day
0613 operator/(int y, const month_day& md) noexcept;
0614 constexpr year_month_day
0615 operator/(const month_day& md, const year& y) noexcept;
0616 constexpr year_month_day
0617 operator/(const month_day& md, int y) noexcept;
0618 constexpr year_month_day_last
0619 operator/(const year_month& ym, last_spec) noexcept;
0620 constexpr year_month_day_last
0621 operator/(const year& y, const month_day_last& mdl) noexcept;
0622 constexpr year_month_day_last
0623 operator/(int y, const month_day_last& mdl) noexcept;
0624 constexpr year_month_day_last
0625 operator/(const month_day_last& mdl, const year& y) noexcept;
0626 constexpr year_month_day_last
0627 operator/(const month_day_last& mdl, int y) noexcept;
0628 constexpr year_month_weekday
0629 operator/(const year_month& ym, const weekday_indexed& wdi) noexcept;
0630 constexpr year_month_weekday
0631 operator/(const year& y, const month_weekday& mwd) noexcept;
0632 constexpr year_month_weekday
0633 operator/(int y, const month_weekday& mwd) noexcept;
0634 constexpr year_month_weekday
0635 operator/(const month_weekday& mwd, const year& y) noexcept;
0636 constexpr year_month_weekday
0637 operator/(const month_weekday& mwd, int y) noexcept;
0638 constexpr year_month_weekday_last
0639 operator/(const year_month& ym, const weekday_last& wdl) noexcept;
0640 constexpr year_month_weekday_last
0641 operator/(const year& y, const month_weekday_last& mwdl) noexcept;
0642 constexpr year_month_weekday_last
0643 operator/(int y, const month_weekday_last& mwdl) noexcept;
0644 constexpr year_month_weekday_last
0645 operator/(const month_weekday_last& mwdl, const year& y) noexcept;
0646 constexpr year_month_weekday_last
0647 operator/(const month_weekday_last& mwdl, int y) noexcept;
0648
0649 // 26.9, class template hh_mm_ss
0650 template <class Duration>
0651 class hh_mm_ss
0652 {
0653 bool is_neg; // exposition only
0654 chrono::hours h; // exposition only
0655 chrono::minutes m; // exposition only
0656 chrono::seconds s; // exposition only
0657 precision ss; // exposition only
0658
0659 public:
0660 static unsigned constexpr fractional_width = see below;
0661 using precision = see below;
0662
0663 constexpr hh_mm_ss() noexcept : hh_mm_ss{Duration::zero()} {}
0664 constexpr explicit hh_mm_ss(Duration d) noexcept;
0665
0666 constexpr bool is_negative() const noexcept;
0667 constexpr chrono::hours hours() const noexcept;
0668 constexpr chrono::minutes minutes() const noexcept;
0669 constexpr chrono::seconds seconds() const noexcept;
0670 constexpr precision subseconds() const noexcept;
0671
0672 constexpr explicit operator precision() const noexcept;
0673 constexpr precision to_duration() const noexcept;
0674 };
0675
0676 template<class charT, class traits, class Duration>
0677 basic_ostream<charT, traits>&
0678 operator<<(basic_ostream<charT, traits>& os, const hh_mm_ss<Duration>& hms); // C++20
0679
0680 // 26.10, 12/24 hour functions
0681 constexpr bool is_am(hours const& h) noexcept;
0682 constexpr bool is_pm(hours const& h) noexcept;
0683 constexpr hours make12(const hours& h) noexcept;
0684 constexpr hours make24(const hours& h, bool is_pm) noexcept;
0685
0686 // [time.zone.db], time zone database
0687 struct tzdb { // C++20
0688 string version;
0689 vector<time_zone> zones;
0690 vector<time_zone_link> links;
0691 vector<leap_second> leap_seconds;
0692
0693 const time_zone* locate_zone(string_view tz_name) const;
0694 const time_zone* current_zone() const;
0695 };
0696
0697 class tzdb_list { // C++20
0698 public:
0699 tzdb_list(const tzdb_list&) = delete;
0700 tzdb_list& operator=(const tzdb_list&) = delete;
0701
0702 // unspecified additional constructors
0703
0704 class const_iterator;
0705
0706 const tzdb& front() const noexcept;
0707
0708 const_iterator erase_after(const_iterator p);
0709
0710 const_iterator begin() const noexcept;
0711 const_iterator end() const noexcept;
0712
0713 const_iterator cbegin() const noexcept;
0714 const_iterator cend() const noexcept;
0715 };
0716
0717 // [time.zone.db.access], time zone database access
0718 const tzdb& get_tzdb(); // C++20
0719 tzdb_list& get_tzdb_list(); // C++20
0720 const time_zone* locate_zone(string_view tz_name); // C++20
0721 const time_zone* current_zone() // C++20
0722
0723 // [time.zone.db.remote], remote time zone database support
0724 const tzdb& reload_tzdb(); // C++20
0725 string remote_version(); // C++20
0726
0727 // [time.zone.exception], exception classes
0728 class nonexistent_local_time; // C++20
0729 class ambiguous_local_time; // C++20
0730
0731 // [time.zone.info], information classes
0732 struct sys_info { // C++20
0733 sys_seconds begin;
0734 sys_seconds end;
0735 seconds offset;
0736 minutes save;
0737 string abbrev;
0738 };
0739
0740 template<class charT, class traits> // C++20
0741 basic_ostream<charT, traits>&
0742 operator<<(basic_ostream<charT, traits>& os, const sys_info& si);
0743
0744 struct local_info { // C++20
0745 static constexpr int unique = 0;
0746 static constexpr int nonexistent = 1;
0747 static constexpr int ambiguous = 2;
0748
0749 int result;
0750 sys_info first;
0751 sys_info second;
0752 };
0753
0754 template<class charT, class traits> // C++20
0755 basic_ostream<charT, traits>&
0756 operator<<(basic_ostream<charT, traits>& os, const local_info& li);
0757
0758 // 25.10.5, class time_zone // C++20
0759 enum class choose {earliest, latest};
0760 class time_zone {
0761 time_zone(time_zone&&) = default;
0762 time_zone& operator=(time_zone&&) = default;
0763
0764 // unspecified additional constructors
0765
0766 string_view name() const noexcept;
0767
0768 template<class Duration>
0769 sys_info get_info(const sys_time<Duration>& st) const;
0770
0771 template<class Duration>
0772 local_info get_info(const local_time<Duration>& tp) const;
0773
0774 template<class Duration>
0775 sys_time<common_type_t<Duration, seconds>>
0776 to_sys(const local_time<Duration>& tp) const;
0777
0778 template<class Duration>
0779 sys_time<common_type_t<Duration, seconds>>
0780 to_sys(const local_time<Duration>& tp, choose z) const;
0781
0782 template<class Duration>
0783 local_time<common_type_t<Duration, seconds>>
0784 to_local(const sys_time<Duration>& tp) const;
0785 };
0786 bool operator==(const time_zone& x, const time_zone& y) noexcept; // C++20
0787 strong_ordering operator<=>(const time_zone& x, const time_zone& y) noexcept; // C++20
0788
0789 // [time.zone.zonedtraits], class template zoned_traits
0790 template<class T> struct zoned_traits; // C++20
0791
0792 // [time.zone.zonedtime], class template zoned_time
0793 template<class Duration, class TimeZonePtr = const time_zone*> // C++20
0794 class zoned_time;
0795
0796 using zoned_seconds = zoned_time<seconds>; // C++20
0797
0798 template<class Duration1, class Duration2, class TimeZonePtr> // C++20
0799 bool operator==(const zoned_time<Duration1, TimeZonePtr>& x,
0800 const zoned_time<Duration2, TimeZonePtr>& y);
0801
0802 template<class charT, class traits, class Duration, class TimeZonePtr> // C++20
0803 basic_ostream<charT, traits>&
0804 operator<<(basic_ostream<charT, traits>& os,
0805 const zoned_time<Duration, TimeZonePtr>& t);
0806
0807 // [time.zone.leap], leap second support
0808 class leap_second { // C++20
0809 public:
0810 leap_second(const leap_second&) = default;
0811 leap_second& operator=(const leap_second&) = default;
0812
0813 // unspecified additional constructors
0814
0815 constexpr sys_seconds date() const noexcept;
0816 constexpr seconds value() const noexcept;
0817 };
0818
0819 constexpr bool operator==(const leap_second& x, const leap_second& y); // C++20
0820 constexpr strong_ordering operator<=>(const leap_second& x, const leap_second& y);
0821
0822 template<class Duration> // C++20
0823 constexpr bool operator==(const leap_second& x, const sys_time<Duration>& y);
0824 template<class Duration> // C++20
0825 constexpr bool operator< (const leap_second& x, const sys_time<Duration>& y);
0826 template<class Duration> // C++20
0827 constexpr bool operator< (const sys_time<Duration>& x, const leap_second& y);
0828 template<class Duration> // C++20
0829 constexpr bool operator> (const leap_second& x, const sys_time<Duration>& y);
0830 template<class Duration> // C++20
0831 constexpr bool operator> (const sys_time<Duration>& x, const leap_second& y);
0832 template<class Duration> // C++20
0833 constexpr bool operator<=(const leap_second& x, const sys_time<Duration>& y);
0834 template<class Duration> // C++20
0835 constexpr bool operator<=(const sys_time<Duration>& x, const leap_second& y);
0836 template<class Duration> // C++20
0837 constexpr bool operator>=(const leap_second& x, const sys_time<Duration>& y);
0838 template<class Duration> // C++20
0839 constexpr bool operator>=(const sys_time<Duration>& x, const leap_second& y);
0840 template<class Duration> // C++20
0841 requires three_way_comparable_with<sys_seconds, sys_time<Duration>>
0842 constexpr auto operator<=>(const leap_second& x, const sys_time<Duration>& y);
0843
0844 // [time.zone.link], class time_zone_link
0845 class time_zone_link { // C++20
0846 public:
0847 time_zone_link(time_zone_link&&) = default;
0848 time_zone_link& operator=(time_zone_link&&) = default;
0849
0850 // unspecified additional constructors
0851
0852 string_view name() const noexcept;
0853 string_view target() const noexcept;
0854 };
0855
0856 bool operator==(const time_zone_link& x, const time_zone_link& y); // C++20
0857 strong_ordering operator<=>(const time_zone_link& x, const time_zone_link& y); // C++20
0858
0859 } // chrono
0860
0861 namespace std {
0862 template<class Duration, class charT>
0863 struct formatter<chrono::sys_time<Duration>, charT>; // C++20
0864 template<class Duration, class charT>
0865 struct formatter<chrono::filetime<Duration>, charT>; // C++20
0866 template<class Duration, class charT>
0867 struct formatter<chrono::local_time<Duration>, charT>; // C++20
0868 template<class Rep, class Period, class charT>
0869 struct formatter<chrono::duration<Rep, Period>, charT>; // C++20
0870 template<class charT> struct formatter<chrono::day, charT>; // C++20
0871 template<class charT> struct formatter<chrono::month, charT>; // C++20
0872 template<class charT> struct formatter<chrono::year, charT>; // C++20
0873 template<class charT> struct formatter<chrono::weekday, charT>; // C++20
0874 template<class charT> struct formatter<chrono::weekday_indexed, charT>; // C++20
0875 template<class charT> struct formatter<chrono::weekday_last, charT>; // C++20
0876 template<class charT> struct formatter<chrono::month_day, charT>; // C++20
0877 template<class charT> struct formatter<chrono::month_day_last, charT>; // C++20
0878 template<class charT> struct formatter<chrono::month_weekday, charT>; // C++20
0879 template<class charT> struct formatter<chrono::month_weekday_last, charT>; // C++20
0880 template<class charT> struct formatter<chrono::year_month, charT>; // C++20
0881 template<class charT> struct formatter<chrono::year_month_day, charT>; // C++20
0882 template<class charT> struct formatter<chrono::year_month_day_last, charT>; // C++20
0883 template<class charT> struct formatter<chrono::year_month_weekday, charT>; // C++20
0884 template<class charT> struct formatter<chrono::year_month_weekday_last, charT>; // C++20
0885 template<class Rep, class Period, class charT>
0886 struct formatter<chrono::hh_mm_ss<duration<Rep, Period>>, charT>; // C++20
0887 template<class charT> struct formatter<chrono::sys_info, charT>; // C++20
0888 template<class charT> struct formatter<chrono::local_info, charT>; // C++20
0889 template<class Duration, class TimeZonePtr, class charT> // C++20
0890 struct formatter<chrono::zoned_time<Duration, TimeZonePtr>, charT>;
0891 } // namespace std
0892
0893 namespace chrono {
0894 // calendrical constants
0895 inline constexpr last_spec last{}; // C++20
0896 inline constexpr chrono::weekday Sunday{0}; // C++20
0897 inline constexpr chrono::weekday Monday{1}; // C++20
0898 inline constexpr chrono::weekday Tuesday{2}; // C++20
0899 inline constexpr chrono::weekday Wednesday{3}; // C++20
0900 inline constexpr chrono::weekday Thursday{4}; // C++20
0901 inline constexpr chrono::weekday Friday{5}; // C++20
0902 inline constexpr chrono::weekday Saturday{6}; // C++20
0903
0904 inline constexpr chrono::month January{1}; // C++20
0905 inline constexpr chrono::month February{2}; // C++20
0906 inline constexpr chrono::month March{3}; // C++20
0907 inline constexpr chrono::month April{4}; // C++20
0908 inline constexpr chrono::month May{5}; // C++20
0909 inline constexpr chrono::month June{6}; // C++20
0910 inline constexpr chrono::month July{7}; // C++20
0911 inline constexpr chrono::month August{8}; // C++20
0912 inline constexpr chrono::month September{9}; // C++20
0913 inline constexpr chrono::month October{10}; // C++20
0914 inline constexpr chrono::month November{11}; // C++20
0915 inline constexpr chrono::month December{12}; // C++20
0916 } // chrono
0917
0918 inline namespace literals {
0919 inline namespace chrono_literals {
0920 constexpr chrono::hours operator ""h(unsigned long long); // C++14
0921 constexpr chrono::duration<unspecified , ratio<3600,1>> operator ""h(long double); // C++14
0922 constexpr chrono::minutes operator ""min(unsigned long long); // C++14
0923 constexpr chrono::duration<unspecified , ratio<60,1>> operator ""min(long double); // C++14
0924 constexpr chrono::seconds operator ""s(unsigned long long); // C++14
0925 constexpr chrono::duration<unspecified > operator ""s(long double); // C++14
0926 constexpr chrono::milliseconds operator ""ms(unsigned long long); // C++14
0927 constexpr chrono::duration<unspecified , milli> operator ""ms(long double); // C++14
0928 constexpr chrono::microseconds operator ""us(unsigned long long); // C++14
0929 constexpr chrono::duration<unspecified , micro> operator ""us(long double); // C++14
0930 constexpr chrono::nanoseconds operator ""ns(unsigned long long); // C++14
0931 constexpr chrono::duration<unspecified , nano> operator ""ns(long double); // C++14
0932 constexpr chrono::day operator ""d(unsigned long long d) noexcept; // C++20
0933 constexpr chrono::year operator ""y(unsigned long long y) noexcept; // C++20
0934 } // chrono_literals
0935 } // literals
0936
0937 } // std
0938 */
0939
0940 // clang-format on
0941
0942 #include <__cxx03/__config>
0943
0944 #include <__cxx03/__chrono/duration.h>
0945 #include <__cxx03/__chrono/file_clock.h>
0946 #include <__cxx03/__chrono/high_resolution_clock.h>
0947 #include <__cxx03/__chrono/steady_clock.h>
0948 #include <__cxx03/__chrono/system_clock.h>
0949 #include <__cxx03/__chrono/time_point.h>
0950
0951 #if _LIBCPP_STD_VER >= 20
0952 # include <__cxx03/__chrono/calendar.h>
0953 # include <__cxx03/__chrono/day.h>
0954 # include <__cxx03/__chrono/exception.h>
0955 # include <__cxx03/__chrono/hh_mm_ss.h>
0956 # include <__cxx03/__chrono/literals.h>
0957 # include <__cxx03/__chrono/local_info.h>
0958 # include <__cxx03/__chrono/month.h>
0959 # include <__cxx03/__chrono/month_weekday.h>
0960 # include <__cxx03/__chrono/monthday.h>
0961 # include <__cxx03/__chrono/sys_info.h>
0962 # include <__cxx03/__chrono/weekday.h>
0963 # include <__cxx03/__chrono/year.h>
0964 # include <__cxx03/__chrono/year_month.h>
0965 # include <__cxx03/__chrono/year_month_day.h>
0966 # include <__cxx03/__chrono/year_month_weekday.h>
0967
0968 # if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
0969 # include <__cxx03/__chrono/formatter.h>
0970 # include <__cxx03/__chrono/ostream.h>
0971 # include <__cxx03/__chrono/parser_std_format_spec.h>
0972 # include <__cxx03/__chrono/statically_widen.h>
0973 # endif
0974
0975 # if !defined(_LIBCPP_HAS_NO_TIME_ZONE_DATABASE) && !defined(_LIBCPP_HAS_NO_FILESYSTEM) && \
0976 !defined(_LIBCPP_HAS_NO_LOCALIZATION)
0977 # include <__cxx03/__chrono/leap_second.h>
0978 # include <__cxx03/__chrono/time_zone.h>
0979 # include <__cxx03/__chrono/time_zone_link.h>
0980 # include <__cxx03/__chrono/tzdb.h>
0981 # include <__cxx03/__chrono/tzdb_list.h>
0982 # include <__cxx03/__chrono/zoned_time.h>
0983 # endif
0984
0985 #endif
0986
0987 #include <__cxx03/version>
0988
0989 // standard-mandated includes
0990
0991 // [time.syn]
0992 #include <__cxx03/compare>
0993
0994 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
0995 # pragma GCC system_header
0996 #endif
0997
0998 #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 17
0999 # include <__cxx03/cstdint>
1000 # include <__cxx03/stdexcept>
1001 # include <__cxx03/string_view>
1002 # include <__cxx03/vector>
1003 #endif
1004
1005 #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
1006 # include <__cxx03/bit>
1007 # include <__cxx03/concepts>
1008 # include <__cxx03/cstring>
1009 # include <__cxx03/forward_list>
1010 # include <__cxx03/string>
1011 # include <__cxx03/tuple>
1012 #endif
1013
1014 #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER == 20
1015 # include <__cxx03/charconv>
1016 # if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
1017 # include <__cxx03/locale>
1018 # include <__cxx03/ostream>
1019 # endif
1020 #endif
1021
1022 #endif // _LIBCPP___CXX03_CHRONO
