1// -*- C++ -*- 2//===----------------------------------------------------------------------===// 3// 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5// See https://llvm.org/LICENSE.txt for license information. 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7// 8//===----------------------------------------------------------------------===// 9 10#ifndef _LIBCPP_CHRONO 11#define _LIBCPP_CHRONO 12 13/* 14 chrono synopsis 15 16#include <compare> // C++20 17 18namespace std 19{ 20namespace chrono 21{ 22 23template <class ToDuration, class Rep, class Period> 24constexpr 25ToDuration 26duration_cast(const duration<Rep, Period>& fd); 27 28template <class Rep> struct treat_as_floating_point : is_floating_point<Rep> {}; 29 30template <class Rep> inline constexpr bool treat_as_floating_point_v 31 = treat_as_floating_point<Rep>::value; // C++17 32 33template <class Rep> 34struct duration_values 35{ 36public: 37 static constexpr Rep zero(); // noexcept in C++20 38 static constexpr Rep max(); // noexcept in C++20 39 static constexpr Rep min(); // noexcept in C++20 40}; 41 42// duration 43 44template <class Rep, class Period = ratio<1>> 45class duration 46{ 47 static_assert(!__is_duration<Rep>::value, "A duration representation can not be a duration"); 48 static_assert(__is_ratio<Period>::value, "Second template parameter of duration must be a std::ratio"); 49 static_assert(Period::num > 0, "duration period must be positive"); 50public: 51 typedef Rep rep; 52 typedef typename _Period::type period; 53 54 constexpr duration() = default; 55 template <class Rep2> 56 constexpr explicit duration(const Rep2& r, 57 typename enable_if 58 < 59 is_convertible<Rep2, rep>::value && 60 (treat_as_floating_point<rep>::value || 61 !treat_as_floating_point<rep>::value && !treat_as_floating_point<Rep2>::value) 62 >::type* = 0); 63 64 // conversions 65 template <class Rep2, class Period2> 66 constexpr duration(const duration<Rep2, Period2>& d, 67 typename enable_if 68 < 69 treat_as_floating_point<rep>::value || 70 ratio_divide<Period2, period>::type::den == 1 71 >::type* = 0); 72 73 // observer 74 75 constexpr rep count() const; 76 77 // arithmetic 78 79 constexpr common_type<duration>::type operator+() const; 80 constexpr common_type<duration>::type operator-() const; 81 constexpr duration& operator++(); // constexpr in C++17 82 constexpr duration operator++(int); // constexpr in C++17 83 constexpr duration& operator--(); // constexpr in C++17 84 constexpr duration operator--(int); // constexpr in C++17 85 86 constexpr duration& operator+=(const duration& d); // constexpr in C++17 87 constexpr duration& operator-=(const duration& d); // constexpr in C++17 88 89 duration& operator*=(const rep& rhs); // constexpr in C++17 90 duration& operator/=(const rep& rhs); // constexpr in C++17 91 duration& operator%=(const rep& rhs); // constexpr in C++17 92 duration& operator%=(const duration& rhs); // constexpr in C++17 93 94 // special values 95 96 static constexpr duration zero(); // noexcept in C++20 97 static constexpr duration min(); // noexcept in C++20 98 static constexpr duration max(); // noexcept in C++20 99}; 100 101typedef duration<long long, nano> nanoseconds; 102typedef duration<long long, micro> microseconds; 103typedef duration<long long, milli> milliseconds; 104typedef duration<long long > seconds; 105typedef duration< long, ratio< 60> > minutes; 106typedef duration< long, ratio<3600> > hours; 107 108template <class Clock, class Duration = typename Clock::duration> 109class time_point 110{ 111public: 112 typedef Clock clock; 113 typedef Duration duration; 114 typedef typename duration::rep rep; 115 typedef typename duration::period period; 116private: 117 duration d_; // exposition only 118 119public: 120 time_point(); // has value "epoch" // constexpr in C++14 121 explicit time_point(const duration& d); // same as time_point() + d // constexpr in C++14 122 123 // conversions 124 template <class Duration2> 125 time_point(const time_point<clock, Duration2>& t); // constexpr in C++14 126 127 // observer 128 129 duration time_since_epoch() const; // constexpr in C++14 130 131 // arithmetic 132 133 time_point& operator+=(const duration& d); // constexpr in C++17 134 time_point& operator-=(const duration& d); // constexpr in C++17 135 136 // special values 137 138 static constexpr time_point min(); // noexcept in C++20 139 static constexpr time_point max(); // noexcept in C++20 140}; 141 142} // chrono 143 144// common_type traits 145template <class Rep1, class Period1, class Rep2, class Period2> 146 struct common_type<chrono::duration<Rep1, Period1>, chrono::duration<Rep2, Period2>>; 147 148template <class Clock, class Duration1, class Duration2> 149 struct common_type<chrono::time_point<Clock, Duration1>, chrono::time_point<Clock, Duration2>>; 150 151namespace chrono { 152 153// duration arithmetic 154template <class Rep1, class Period1, class Rep2, class Period2> 155 constexpr 156 typename common_type<duration<Rep1, Period1>, duration<Rep2, Period2>>::type 157 operator+(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 158template <class Rep1, class Period1, class Rep2, class Period2> 159 constexpr 160 typename common_type<duration<Rep1, Period1>, duration<Rep2, Period2>>::type 161 operator-(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 162template <class Rep1, class Period, class Rep2> 163 constexpr 164 duration<typename common_type<Rep1, Rep2>::type, Period> 165 operator*(const duration<Rep1, Period>& d, const Rep2& s); 166template <class Rep1, class Period, class Rep2> 167 constexpr 168 duration<typename common_type<Rep1, Rep2>::type, Period> 169 operator*(const Rep1& s, const duration<Rep2, Period>& d); 170template <class Rep1, class Period, class Rep2> 171 constexpr 172 duration<typename common_type<Rep1, Rep2>::type, Period> 173 operator/(const duration<Rep1, Period>& d, const Rep2& s); 174template <class Rep1, class Period1, class Rep2, class Period2> 175 constexpr 176 typename common_type<Rep1, Rep2>::type 177 operator/(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 178 179// duration comparisons 180template <class Rep1, class Period1, class Rep2, class Period2> 181 constexpr 182 bool operator==(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 183template <class Rep1, class Period1, class Rep2, class Period2> 184 constexpr 185 bool operator!=(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); // removed in C++20 186template <class Rep1, class Period1, class Rep2, class Period2> 187 constexpr 188 bool operator< (const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 189template <class Rep1, class Period1, class Rep2, class Period2> 190 constexpr 191 bool operator<=(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 192template <class Rep1, class Period1, class Rep2, class Period2> 193 constexpr 194 bool operator> (const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 195template <class Rep1, class Period1, class Rep2, class Period2> 196 constexpr 197 bool operator>=(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 198template<class Rep1, class Period1, class Rep2, class Period2> 199 requires three_way_comparable<typename CT::rep> 200 constexpr auto operator<=>(const duration<Rep1, Period1>& lhs, 201 const duration<Rep2, Period2>& rhs); // since C++20 202 203// duration_cast 204template <class ToDuration, class Rep, class Period> 205 ToDuration duration_cast(const duration<Rep, Period>& d); 206 207template <class ToDuration, class Rep, class Period> 208 constexpr ToDuration floor(const duration<Rep, Period>& d); // C++17 209template <class ToDuration, class Rep, class Period> 210 constexpr ToDuration ceil(const duration<Rep, Period>& d); // C++17 211template <class ToDuration, class Rep, class Period> 212 constexpr ToDuration round(const duration<Rep, Period>& d); // C++17 213 214// duration I/O 215template<class charT, class traits, class Rep, class Period> // C++20 216 basic_ostream<charT, traits>& 217 operator<<(basic_ostream<charT, traits>& os, 218 const duration<Rep, Period>& d); 219 220// time_point arithmetic (all constexpr in C++14) 221template <class Clock, class Duration1, class Rep2, class Period2> 222 time_point<Clock, typename common_type<Duration1, duration<Rep2, Period2>>::type> 223 operator+(const time_point<Clock, Duration1>& lhs, const duration<Rep2, Period2>& rhs); 224template <class Rep1, class Period1, class Clock, class Duration2> 225 time_point<Clock, typename common_type<duration<Rep1, Period1>, Duration2>::type> 226 operator+(const duration<Rep1, Period1>& lhs, const time_point<Clock, Duration2>& rhs); 227template <class Clock, class Duration1, class Rep2, class Period2> 228 time_point<Clock, typename common_type<Duration1, duration<Rep2, Period2>>::type> 229 operator-(const time_point<Clock, Duration1>& lhs, const duration<Rep2, Period2>& rhs); 230template <class Clock, class Duration1, class Duration2> 231 typename common_type<Duration1, Duration2>::type 232 operator-(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); 233 234// time_point comparisons (all constexpr in C++14) 235template <class Clock, class Duration1, class Duration2> 236 bool operator==(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); 237template <class Clock, class Duration1, class Duration2> 238 bool operator!=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); // removed in C++20 239template <class Clock, class Duration1, class Duration2> 240 bool operator< (const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); 241template <class Clock, class Duration1, class Duration2> 242 bool operator<=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); 243template <class Clock, class Duration1, class Duration2> 244 bool operator> (const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); 245template <class Clock, class Duration1, class Duration2> 246 bool operator>=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); 247template<class Clock, class Duration1, 248 three_way_comparable_with<Duration1> Duration2> 249 constexpr auto operator<=>(const time_point<Clock, Duration1>& lhs, 250 const time_point<Clock, Duration2>& rhs); // since C++20 251 252// time_point_cast (constexpr in C++14) 253 254template <class ToDuration, class Clock, class Duration> 255 time_point<Clock, ToDuration> time_point_cast(const time_point<Clock, Duration>& t); 256 257template <class ToDuration, class Clock, class Duration> 258 constexpr time_point<Clock, ToDuration> 259 floor(const time_point<Clock, Duration>& tp); // C++17 260 261template <class ToDuration, class Clock, class Duration> 262 constexpr time_point<Clock, ToDuration> 263 ceil(const time_point<Clock, Duration>& tp); // C++17 264 265template <class ToDuration, class Clock, class Duration> 266 constexpr time_point<Clock, ToDuration> 267 round(const time_point<Clock, Duration>& tp); // C++17 268 269template <class Rep, class Period> 270 constexpr duration<Rep, Period> abs(duration<Rep, Period> d); // C++17 271 272// Clocks 273 274class system_clock 275{ 276public: 277 typedef microseconds duration; 278 typedef duration::rep rep; 279 typedef duration::period period; 280 typedef chrono::time_point<system_clock> time_point; 281 static const bool is_steady = false; // constexpr in C++14 282 283 static time_point now() noexcept; 284 static time_t to_time_t (const time_point& __t) noexcept; 285 static time_point from_time_t(time_t __t) noexcept; 286}; 287 288template <class Duration> 289 using sys_time = time_point<system_clock, Duration>; // C++20 290using sys_seconds = sys_time<seconds>; // C++20 291using sys_days = sys_time<days>; // C++20 292 293template<class charT, class traits, class Duration> // C++20 294 basic_ostream<charT, traits>& 295 operator<<(basic_ostream<charT, traits>& os, const sys_time<Duration>& tp); 296 297class file_clock // C++20 298{ 299public: 300 typedef see-below rep; 301 typedef nano period; 302 typedef chrono::duration<rep, period> duration; 303 typedef chrono::time_point<file_clock> time_point; 304 static constexpr bool is_steady = false; 305 306 static time_point now() noexcept; 307 308 template<class Duration> 309 static sys_time<see-below> to_sys(const file_time<Duration>&); 310 311 template<class Duration> 312 static file_time<see-below> from_sys(const sys_time<Duration>&); 313}; 314 315template<class Duration> 316 using file_time = time_point<file_clock, Duration>; // C++20 317 318class steady_clock 319{ 320public: 321 typedef nanoseconds duration; 322 typedef duration::rep rep; 323 typedef duration::period period; 324 typedef chrono::time_point<steady_clock, duration> time_point; 325 static const bool is_steady = true; // constexpr in C++14 326 327 static time_point now() noexcept; 328}; 329 330typedef steady_clock high_resolution_clock; 331 332// 25.7.8, local time // C++20 333struct local_t {}; 334template<class Duration> 335 using local_time = time_point<local_t, Duration>; 336using local_seconds = local_time<seconds>; 337using local_days = local_time<days>; 338 339// 25.8.2, class last_spec // C++20 340struct last_spec; 341 342// 25.8.3, class day // C++20 343 344class day; 345constexpr bool operator==(const day& x, const day& y) noexcept; 346constexpr strong_ordering operator<=>(const day& x, const day& y) noexcept; 347constexpr day operator+(const day& x, const days& y) noexcept; 348constexpr day operator+(const days& x, const day& y) noexcept; 349constexpr day operator-(const day& x, const days& y) noexcept; 350constexpr days operator-(const day& x, const day& y) noexcept; 351template<class charT, class traits> 352 basic_ostream<charT, traits>& 353 operator<<(basic_ostream<charT, traits>& os, const day& d); 354 355// 25.8.4, class month // C++20 356class month; 357constexpr bool operator==(const month& x, const month& y) noexcept; 358constexpr strong_ordering operator<=>(const month& x, const month& y) noexcept; 359 360constexpr month operator+(const month& x, const months& y) noexcept; 361constexpr month operator+(const months& x, const month& y) noexcept; 362constexpr month operator-(const month& x, const months& y) noexcept; 363constexpr months operator-(const month& x, const month& y) noexcept; 364template<class charT, class traits> 365 basic_ostream<charT, traits>& 366 operator<<(basic_ostream<charT, traits>& os, const month& m); 367 368// 25.8.5, class year // C++20 369class year; 370constexpr bool operator==(const year& x, const year& y) noexcept; 371constexpr strong_ordering operator<=>(const year& x, const year& y) noexcept; 372 373constexpr year operator+(const year& x, const years& y) noexcept; 374constexpr year operator+(const years& x, const year& y) noexcept; 375constexpr year operator-(const year& x, const years& y) noexcept; 376constexpr years operator-(const year& x, const year& y) noexcept; 377template<class charT, class traits> 378 basic_ostream<charT, traits>& 379 operator<<(basic_ostream<charT, traits>& os, const year& y); 380 381// 25.8.6, class weekday // C++20 382class weekday; 383 384constexpr bool operator==(const weekday& x, const weekday& y) noexcept; 385constexpr bool operator!=(const weekday& x, const weekday& y) noexcept; 386constexpr weekday operator+(const weekday& x, const days& y) noexcept; 387constexpr weekday operator+(const days& x, const weekday& y) noexcept; 388constexpr weekday operator-(const weekday& x, const days& y) noexcept; 389constexpr days operator-(const weekday& x, const weekday& y) noexcept; 390template<class charT, class traits> 391 basic_ostream<charT, traits>& 392 operator<<(basic_ostream<charT, traits>& os, const weekday& wd); 393 394// 25.8.7, class weekday_indexed // C++20 395 396class weekday_indexed; 397constexpr bool operator==(const weekday_indexed& x, const weekday_indexed& y) noexcept; 398constexpr bool operator!=(const weekday_indexed& x, const weekday_indexed& y) noexcept; 399 400template<class charT, class traits> 401 basic_ostream<charT, traits>& 402 operator<<(basic_ostream<charT, traits>& os, const weekday_indexed& wdi); 403 404// 25.8.8, class weekday_last // C++20 405class weekday_last; 406 407constexpr bool operator==(const weekday_last& x, const weekday_last& y) noexcept; 408constexpr bool operator!=(const weekday_last& x, const weekday_last& y) noexcept; 409 410template<class charT, class traits> 411 basic_ostream<charT, traits>& 412 operator<<(basic_ostream<charT, traits>& os, const weekday_last& wdl); 413 414// 25.8.9, class month_day // C++20 415class month_day; 416 417constexpr bool operator==(const month_day& x, const month_day& y) noexcept; 418constexpr strong_ordering operator<=>(const month_day& x, const month_day& y) noexcept; 419 420template<class charT, class traits> 421 basic_ostream<charT, traits>& 422 operator<<(basic_ostream<charT, traits>& os, const month_day& md); 423 424// 25.8.10, class month_day_last // C++20 425class month_day_last; 426 427constexpr bool operator==(const month_day_last& x, const month_day_last& y) noexcept; 428constexpr strong_ordering operator<=>(const month_day_last& x, const month_day_last& y) noexcept; 429 430template<class charT, class traits> 431 basic_ostream<charT, traits>& 432 operator<<(basic_ostream<charT, traits>& os, const month_day_last& mdl); 433 434// 25.8.11, class month_weekday // C++20 435class month_weekday; 436 437constexpr bool operator==(const month_weekday& x, const month_weekday& y) noexcept; 438constexpr bool operator!=(const month_weekday& x, const month_weekday& y) noexcept; 439 440template<class charT, class traits> 441 basic_ostream<charT, traits>& 442 operator<<(basic_ostream<charT, traits>& os, const month_weekday& mwd); 443 444// 25.8.12, class month_weekday_last // C++20 445class month_weekday_last; 446 447constexpr bool operator==(const month_weekday_last& x, const month_weekday_last& y) noexcept; 448constexpr bool operator!=(const month_weekday_last& x, const month_weekday_last& y) noexcept; 449 450template<class charT, class traits> 451 basic_ostream<charT, traits>& 452 operator<<(basic_ostream<charT, traits>& os, const month_weekday_last& mwdl); 453 454 455// 25.8.13, class year_month // C++20 456class year_month; 457 458constexpr bool operator==(const year_month& x, const year_month& y) noexcept; 459constexpr strong_ordering operator<=>(const year_month& x, const year_month& y) noexcept; 460 461constexpr year_month operator+(const year_month& ym, const months& dm) noexcept; 462constexpr year_month operator+(const months& dm, const year_month& ym) noexcept; 463constexpr year_month operator-(const year_month& ym, const months& dm) noexcept; 464constexpr months operator-(const year_month& x, const year_month& y) noexcept; 465constexpr year_month operator+(const year_month& ym, const years& dy) noexcept; 466constexpr year_month operator+(const years& dy, const year_month& ym) noexcept; 467constexpr year_month operator-(const year_month& ym, const years& dy) noexcept; 468 469template<class charT, class traits> 470 basic_ostream<charT, traits>& 471 operator<<(basic_ostream<charT, traits>& os, const year_month& ym); 472 473// 25.8.14, class year_month_day class // C++20 474year_month_day; 475 476constexpr bool operator==(const year_month_day& x, const year_month_day& y) noexcept; 477constexpr strong_ordering operator<=>(const year_month_day& x, const year_month_day& y) noexcept; 478 479constexpr year_month_day operator+(const year_month_day& ymd, const months& dm) noexcept; 480constexpr year_month_day operator+(const months& dm, const year_month_day& ymd) noexcept; 481constexpr year_month_day operator+(const year_month_day& ymd, const years& dy) noexcept; 482constexpr year_month_day operator+(const years& dy, const year_month_day& ymd) noexcept; 483constexpr year_month_day operator-(const year_month_day& ymd, const months& dm) noexcept; 484constexpr year_month_day operator-(const year_month_day& ymd, const years& dy) noexcept; 485 486template<class charT, class traits> 487 basic_ostream<charT, traits>& 488 operator<<(basic_ostream<charT, traits>& os, const year_month_day& ymd); 489 490// 25.8.15, class year_month_day_last // C++20 491class year_month_day_last; 492 493constexpr bool operator==(const year_month_day_last& x, const year_month_day_last& y) noexcept; 494constexpr strong_ordering operator<=>(const year_month_day_last_day& x, const year_month_day_last_day& y) noexcept; 495 496constexpr year_month_day_last 497 operator+(const year_month_day_last& ymdl, const months& dm) noexcept; 498constexpr year_month_day_last 499 operator+(const months& dm, const year_month_day_last& ymdl) noexcept; 500constexpr year_month_day_last 501 operator+(const year_month_day_last& ymdl, const years& dy) noexcept; 502constexpr year_month_day_last 503 operator+(const years& dy, const year_month_day_last& ymdl) noexcept; 504constexpr year_month_day_last 505 operator-(const year_month_day_last& ymdl, const months& dm) noexcept; 506constexpr year_month_day_last 507 operator-(const year_month_day_last& ymdl, const years& dy) noexcept; 508 509template<class charT, class traits> 510 basic_ostream<charT, traits>& 511 operator<<(basic_ostream<charT, traits>& os, const year_month_day_last& ymdl); 512 513// 25.8.16, class year_month_weekday // C++20 514class year_month_weekday; 515 516constexpr bool operator==(const year_month_weekday& x, 517 const year_month_weekday& y) noexcept; 518constexpr bool operator!=(const year_month_weekday& x, 519 const year_month_weekday& y) noexcept; 520 521constexpr year_month_weekday 522 operator+(const year_month_weekday& ymwd, const months& dm) noexcept; 523constexpr year_month_weekday 524 operator+(const months& dm, const year_month_weekday& ymwd) noexcept; 525constexpr year_month_weekday 526 operator+(const year_month_weekday& ymwd, const years& dy) noexcept; 527constexpr year_month_weekday 528 operator+(const years& dy, const year_month_weekday& ymwd) noexcept; 529constexpr year_month_weekday 530 operator-(const year_month_weekday& ymwd, const months& dm) noexcept; 531constexpr year_month_weekday 532 operator-(const year_month_weekday& ymwd, const years& dy) noexcept; 533 534template<class charT, class traits> 535 basic_ostream<charT, traits>& 536 operator<<(basic_ostream<charT, traits>& os, const year_month_weekday& ymwd); 537 538// 25.8.17, class year_month_weekday_last // C++20 539class year_month_weekday_last; 540 541constexpr bool operator==(const year_month_weekday_last& x, 542 const year_month_weekday_last& y) noexcept; 543constexpr bool operator!=(const year_month_weekday_last& x, 544 const year_month_weekday_last& y) noexcept; 545constexpr year_month_weekday_last 546 operator+(const year_month_weekday_last& ymwdl, const months& dm) noexcept; 547constexpr year_month_weekday_last 548 operator+(const months& dm, const year_month_weekday_last& ymwdl) noexcept; 549constexpr year_month_weekday_last 550 operator+(const year_month_weekday_last& ymwdl, const years& dy) noexcept; 551constexpr year_month_weekday_last 552 operator+(const years& dy, const year_month_weekday_last& ymwdl) noexcept; 553constexpr year_month_weekday_last 554 operator-(const year_month_weekday_last& ymwdl, const months& dm) noexcept; 555constexpr year_month_weekday_last 556 operator-(const year_month_weekday_last& ymwdl, const years& dy) noexcept; 557 558template<class charT, class traits> 559 basic_ostream<charT, traits>& 560 operator<<(basic_ostream<charT, traits>& os, const year_month_weekday_last& ymwdl); 561 562// 25.8.18, civil calendar conventional syntax operators // C++20 563constexpr year_month 564 operator/(const year& y, const month& m) noexcept; 565constexpr year_month 566 operator/(const year& y, int m) noexcept; 567constexpr month_day 568 operator/(const month& m, const day& d) noexcept; 569constexpr month_day 570 operator/(const month& m, int d) noexcept; 571constexpr month_day 572 operator/(int m, const day& d) noexcept; 573constexpr month_day 574 operator/(const day& d, const month& m) noexcept; 575constexpr month_day 576 operator/(const day& d, int m) noexcept; 577constexpr month_day_last 578 operator/(const month& m, last_spec) noexcept; 579constexpr month_day_last 580 operator/(int m, last_spec) noexcept; 581constexpr month_day_last 582 operator/(last_spec, const month& m) noexcept; 583constexpr month_day_last 584 operator/(last_spec, int m) noexcept; 585constexpr month_weekday 586 operator/(const month& m, const weekday_indexed& wdi) noexcept; 587constexpr month_weekday 588 operator/(int m, const weekday_indexed& wdi) noexcept; 589constexpr month_weekday 590 operator/(const weekday_indexed& wdi, const month& m) noexcept; 591constexpr month_weekday 592 operator/(const weekday_indexed& wdi, int m) noexcept; 593constexpr month_weekday_last 594 operator/(const month& m, const weekday_last& wdl) noexcept; 595constexpr month_weekday_last 596 operator/(int m, const weekday_last& wdl) noexcept; 597constexpr month_weekday_last 598 operator/(const weekday_last& wdl, const month& m) noexcept; 599constexpr month_weekday_last 600 operator/(const weekday_last& wdl, int m) noexcept; 601constexpr year_month_day 602 operator/(const year_month& ym, const day& d) noexcept; 603constexpr year_month_day 604 operator/(const year_month& ym, int d) noexcept; 605constexpr year_month_day 606 operator/(const year& y, const month_day& md) noexcept; 607constexpr year_month_day 608 operator/(int y, const month_day& md) noexcept; 609constexpr year_month_day 610 operator/(const month_day& md, const year& y) noexcept; 611constexpr year_month_day 612 operator/(const month_day& md, int y) noexcept; 613constexpr year_month_day_last 614 operator/(const year_month& ym, last_spec) noexcept; 615constexpr year_month_day_last 616 operator/(const year& y, const month_day_last& mdl) noexcept; 617constexpr year_month_day_last 618 operator/(int y, const month_day_last& mdl) noexcept; 619constexpr year_month_day_last 620 operator/(const month_day_last& mdl, const year& y) noexcept; 621constexpr year_month_day_last 622 operator/(const month_day_last& mdl, int y) noexcept; 623constexpr year_month_weekday 624 operator/(const year_month& ym, const weekday_indexed& wdi) noexcept; 625constexpr year_month_weekday 626 operator/(const year& y, const month_weekday& mwd) noexcept; 627constexpr year_month_weekday 628 operator/(int y, const month_weekday& mwd) noexcept; 629constexpr year_month_weekday 630 operator/(const month_weekday& mwd, const year& y) noexcept; 631constexpr year_month_weekday 632 operator/(const month_weekday& mwd, int y) noexcept; 633constexpr year_month_weekday_last 634 operator/(const year_month& ym, const weekday_last& wdl) noexcept; 635constexpr year_month_weekday_last 636 operator/(const year& y, const month_weekday_last& mwdl) noexcept; 637constexpr year_month_weekday_last 638 operator/(int y, const month_weekday_last& mwdl) noexcept; 639constexpr year_month_weekday_last 640 operator/(const month_weekday_last& mwdl, const year& y) noexcept; 641constexpr year_month_weekday_last 642 operator/(const month_weekday_last& mwdl, int y) noexcept; 643 644// 26.9, class template hh_mm_ss 645template <class Duration> 646class hh_mm_ss 647{ 648 bool is_neg; // exposition only 649 chrono::hours h; // exposition only 650 chrono::minutes m; // exposition only 651 chrono::seconds s; // exposition only 652 precision ss; // exposition only 653 654public: 655 static unsigned constexpr fractional_width = see below; 656 using precision = see below; 657 658 constexpr hh_mm_ss() noexcept : hh_mm_ss{Duration::zero()} {} 659 constexpr explicit hh_mm_ss(Duration d) noexcept; 660 661 constexpr bool is_negative() const noexcept; 662 constexpr chrono::hours hours() const noexcept; 663 constexpr chrono::minutes minutes() const noexcept; 664 constexpr chrono::seconds seconds() const noexcept; 665 constexpr precision subseconds() const noexcept; 666 667 constexpr explicit operator precision() const noexcept; 668 constexpr precision to_duration() const noexcept; 669}; 670 671template<class charT, class traits, class Duration> 672 basic_ostream<charT, traits>& 673 operator<<(basic_ostream<charT, traits>& os, const hh_mm_ss<Duration>& hms); // C++20 674 675// 26.10, 12/24 hour functions 676constexpr bool is_am(hours const& h) noexcept; 677constexpr bool is_pm(hours const& h) noexcept; 678constexpr hours make12(const hours& h) noexcept; 679constexpr hours make24(const hours& h, bool is_pm) noexcept; 680 681// 25.10.5, class time_zone // C++20 682enum class choose {earliest, latest}; 683class time_zone; 684bool operator==(const time_zone& x, const time_zone& y) noexcept; 685bool operator!=(const time_zone& x, const time_zone& y) noexcept; 686bool operator<(const time_zone& x, const time_zone& y) noexcept; 687bool operator>(const time_zone& x, const time_zone& y) noexcept; 688bool operator<=(const time_zone& x, const time_zone& y) noexcept; 689bool operator>=(const time_zone& x, const time_zone& y) noexcept; 690} // chrono 691 692namespace std { 693 template<class Duration, class charT> 694 struct formatter<chrono::sys_time<Duration>, charT>; // C++20 695 template<class Rep, class Period, class charT> 696 struct formatter<chrono::duration<Rep, Period>, charT>; // C++20 697 template<class charT> struct formatter<chrono::day, charT>; // C++20 698 template<class charT> struct formatter<chrono::month, charT>; // C++20 699 template<class charT> struct formatter<chrono::year, charT>; // C++20 700 template<class charT> struct formatter<chrono::weekday, charT>; // C++20 701 template<class charT> struct formatter<chrono::weekday_indexed, charT>; // C++20 702 template<class charT> struct formatter<chrono::weekday_last, charT>; // C++20 703 template<class charT> struct formatter<chrono::month_day, charT>; // C++20 704 template<class charT> struct formatter<chrono::month_day_last, charT>; // C++20 705 template<class charT> struct formatter<chrono::month_weekday, charT>; // C++20 706 template<class charT> struct formatter<chrono::month_weekday_last, charT>; // C++20 707 template<class charT> struct formatter<chrono::year_month, charT>; // C++20 708 template<class charT> struct formatter<chrono::year_month_day, charT>; // C++20 709 template<class charT> struct formatter<chrono::year_month_day_last, charT>; // C++20 710 template<class charT> struct formatter<chrono::year_month_weekday, charT>; // C++20 711 template<class charT> struct formatter<chrono::year_month_weekday_last, charT>; // C++20 712 template<class Rep, class Period, class charT> 713 struct formatter<chrono::hh_mm_ss<duration<Rep, Period>>, charT>; // C++20 714} // namespace std 715 716namespace chrono { 717// calendrical constants 718inline constexpr last_spec last{}; // C++20 719inline constexpr chrono::weekday Sunday{0}; // C++20 720inline constexpr chrono::weekday Monday{1}; // C++20 721inline constexpr chrono::weekday Tuesday{2}; // C++20 722inline constexpr chrono::weekday Wednesday{3}; // C++20 723inline constexpr chrono::weekday Thursday{4}; // C++20 724inline constexpr chrono::weekday Friday{5}; // C++20 725inline constexpr chrono::weekday Saturday{6}; // C++20 726 727inline constexpr chrono::month January{1}; // C++20 728inline constexpr chrono::month February{2}; // C++20 729inline constexpr chrono::month March{3}; // C++20 730inline constexpr chrono::month April{4}; // C++20 731inline constexpr chrono::month May{5}; // C++20 732inline constexpr chrono::month June{6}; // C++20 733inline constexpr chrono::month July{7}; // C++20 734inline constexpr chrono::month August{8}; // C++20 735inline constexpr chrono::month September{9}; // C++20 736inline constexpr chrono::month October{10}; // C++20 737inline constexpr chrono::month November{11}; // C++20 738inline constexpr chrono::month December{12}; // C++20 739} // chrono 740 741inline namespace literals { 742 inline namespace chrono_literals { 743constexpr chrono::hours operator ""h(unsigned long long); // C++14 744constexpr chrono::duration<unspecified , ratio<3600,1>> operator ""h(long double); // C++14 745constexpr chrono::minutes operator ""min(unsigned long long); // C++14 746constexpr chrono::duration<unspecified , ratio<60,1>> operator ""min(long double); // C++14 747constexpr chrono::seconds operator ""s(unsigned long long); // C++14 748constexpr chrono::duration<unspecified > operator ""s(long double); // C++14 749constexpr chrono::milliseconds operator ""ms(unsigned long long); // C++14 750constexpr chrono::duration<unspecified , milli> operator ""ms(long double); // C++14 751constexpr chrono::microseconds operator ""us(unsigned long long); // C++14 752constexpr chrono::duration<unspecified , micro> operator ""us(long double); // C++14 753constexpr chrono::nanoseconds operator ""ns(unsigned long long); // C++14 754constexpr chrono::duration<unspecified , nano> operator ""ns(long double); // C++14 755constexpr chrono::day operator ""d(unsigned long long d) noexcept; // C++20 756constexpr chrono::year operator ""y(unsigned long long y) noexcept; // C++20 757} // chrono_literals 758} // literals 759 760} // std 761*/ 762 763#include <__assert> // all public C++ headers provide the assertion handler 764#include <__chrono/calendar.h> 765#include <__chrono/convert_to_timespec.h> 766#include <__chrono/convert_to_tm.h> 767#include <__chrono/day.h> 768#include <__chrono/duration.h> 769#include <__chrono/file_clock.h> 770#include <__chrono/hh_mm_ss.h> 771#include <__chrono/high_resolution_clock.h> 772#include <__chrono/literals.h> 773#include <__chrono/month.h> 774#include <__chrono/month_weekday.h> 775#include <__chrono/monthday.h> 776#include <__chrono/steady_clock.h> 777#include <__chrono/system_clock.h> 778#include <__chrono/time_point.h> 779#include <__chrono/weekday.h> 780#include <__chrono/year.h> 781#include <__chrono/year_month.h> 782#include <__chrono/year_month_day.h> 783#include <__chrono/year_month_weekday.h> 784#include <__config> 785#include <version> 786 787// standard-mandated includes 788 789// [time.syn] 790#include <compare> 791 792#if !defined(_LIBCPP_HAS_NO_LOCALIZATION) && !defined(_LIBCPP_HAS_NO_INCOMPLETE_FORMAT) && _LIBCPP_STD_VER >= 20 793# include <__chrono/formatter.h> 794# include <__chrono/ostream.h> 795# include <__chrono/parser_std_format_spec.h> 796# include <__chrono/statically_widen.h> 797#endif 798 799 800#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 801# pragma GCC system_header 802#endif 803 804#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20 805# include <bit> 806# include <concepts> 807# include <cstring> 808#endif 809 810#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER == 20 811# include <charconv> 812#endif 813 814#endif // _LIBCPP_CHRONO 815