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); 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); 198 199// duration_cast 200template <class ToDuration, class Rep, class Period> 201 ToDuration duration_cast(const duration<Rep, Period>& d); 202 203template <class ToDuration, class Rep, class Period> 204 constexpr ToDuration floor(const duration<Rep, Period>& d); // C++17 205template <class ToDuration, class Rep, class Period> 206 constexpr ToDuration ceil(const duration<Rep, Period>& d); // C++17 207template <class ToDuration, class Rep, class Period> 208 constexpr ToDuration round(const duration<Rep, Period>& d); // C++17 209 210// duration I/O is elsewhere 211 212// time_point arithmetic (all constexpr in C++14) 213template <class Clock, class Duration1, class Rep2, class Period2> 214 time_point<Clock, typename common_type<Duration1, duration<Rep2, Period2>>::type> 215 operator+(const time_point<Clock, Duration1>& lhs, const duration<Rep2, Period2>& rhs); 216template <class Rep1, class Period1, class Clock, class Duration2> 217 time_point<Clock, typename common_type<duration<Rep1, Period1>, Duration2>::type> 218 operator+(const duration<Rep1, Period1>& lhs, const time_point<Clock, Duration2>& rhs); 219template <class Clock, class Duration1, class Rep2, class Period2> 220 time_point<Clock, typename common_type<Duration1, duration<Rep2, Period2>>::type> 221 operator-(const time_point<Clock, Duration1>& lhs, const duration<Rep2, Period2>& rhs); 222template <class Clock, class Duration1, class Duration2> 223 typename common_type<Duration1, Duration2>::type 224 operator-(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); 225 226// time_point comparisons (all constexpr in C++14) 227template <class Clock, class Duration1, class Duration2> 228 bool operator==(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); 229template <class Clock, class Duration1, class Duration2> 230 bool operator!=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); 231template <class Clock, class Duration1, class Duration2> 232 bool operator< (const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); 233template <class Clock, class Duration1, class Duration2> 234 bool operator<=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); 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); 239 240// time_point_cast (constexpr in C++14) 241 242template <class ToDuration, class Clock, class Duration> 243 time_point<Clock, ToDuration> time_point_cast(const time_point<Clock, Duration>& t); 244 245template <class ToDuration, class Clock, class Duration> 246 constexpr time_point<Clock, ToDuration> 247 floor(const time_point<Clock, Duration>& tp); // C++17 248 249template <class ToDuration, class Clock, class Duration> 250 constexpr time_point<Clock, ToDuration> 251 ceil(const time_point<Clock, Duration>& tp); // C++17 252 253template <class ToDuration, class Clock, class Duration> 254 constexpr time_point<Clock, ToDuration> 255 round(const time_point<Clock, Duration>& tp); // C++17 256 257template <class Rep, class Period> 258 constexpr duration<Rep, Period> abs(duration<Rep, Period> d); // C++17 259 260// Clocks 261 262class system_clock 263{ 264public: 265 typedef microseconds duration; 266 typedef duration::rep rep; 267 typedef duration::period period; 268 typedef chrono::time_point<system_clock> time_point; 269 static const bool is_steady = false; // constexpr in C++14 270 271 static time_point now() noexcept; 272 static time_t to_time_t (const time_point& __t) noexcept; 273 static time_point from_time_t(time_t __t) noexcept; 274}; 275 276template <class Duration> 277 using sys_time = time_point<system_clock, Duration>; // C++20 278using sys_seconds = sys_time<seconds>; // C++20 279using sys_days = sys_time<days>; // C++20 280 281class file_clock // C++20 282{ 283public: 284 typedef see-below rep; 285 typedef nano period; 286 typedef chrono::duration<rep, period> duration; 287 typedef chrono::time_point<file_clock> time_point; 288 static constexpr bool is_steady = false; 289 290 static time_point now() noexcept; 291 292 template<class Duration> 293 static sys_time<see-below> to_sys(const file_time<Duration>&); 294 295 template<class Duration> 296 static file_time<see-below> from_sys(const sys_time<Duration>&); 297}; 298 299template<class Duration> 300 using file_time = time_point<file_clock, Duration>; // C++20 301 302class steady_clock 303{ 304public: 305 typedef nanoseconds duration; 306 typedef duration::rep rep; 307 typedef duration::period period; 308 typedef chrono::time_point<steady_clock, duration> time_point; 309 static const bool is_steady = true; // constexpr in C++14 310 311 static time_point now() noexcept; 312}; 313 314typedef steady_clock high_resolution_clock; 315 316// 25.7.8, local time // C++20 317struct local_t {}; 318template<class Duration> 319 using local_time = time_point<local_t, Duration>; 320using local_seconds = local_time<seconds>; 321using local_days = local_time<days>; 322 323// 25.8.2, class last_spec // C++20 324struct last_spec; 325 326// 25.8.3, class day // C++20 327 328class day; 329constexpr bool operator==(const day& x, const day& y) noexcept; 330constexpr strong_ordering operator<=>(const day& x, const day& y) noexcept; 331constexpr day operator+(const day& x, const days& y) noexcept; 332constexpr day operator+(const days& x, const day& y) noexcept; 333constexpr day operator-(const day& x, const days& y) noexcept; 334constexpr days operator-(const day& x, const day& y) noexcept; 335 336// 25.8.4, class month // C++20 337class month; 338constexpr bool operator==(const month& x, const month& y) noexcept; 339constexpr bool operator!=(const month& x, const month& y) noexcept; 340constexpr bool operator< (const month& x, const month& y) noexcept; 341constexpr bool operator> (const month& x, const month& y) noexcept; 342constexpr bool operator<=(const month& x, const month& y) noexcept; 343constexpr bool operator>=(const month& x, const month& y) noexcept; 344constexpr month operator+(const month& x, const months& y) noexcept; 345constexpr month operator+(const months& x, const month& y) noexcept; 346constexpr month operator-(const month& x, const months& y) noexcept; 347constexpr months operator-(const month& x, const month& y) noexcept; 348 349// 25.8.5, class year // C++20 350class year; 351constexpr bool operator==(const year& x, const year& y) noexcept; 352constexpr bool operator!=(const year& x, const year& y) noexcept; 353constexpr bool operator< (const year& x, const year& y) noexcept; 354constexpr bool operator> (const year& x, const year& y) noexcept; 355constexpr bool operator<=(const year& x, const year& y) noexcept; 356constexpr bool operator>=(const year& x, const year& y) noexcept; 357constexpr year operator+(const year& x, const years& y) noexcept; 358constexpr year operator+(const years& x, const year& y) noexcept; 359constexpr year operator-(const year& x, const years& y) noexcept; 360constexpr years operator-(const year& x, const year& y) noexcept; 361 362// 25.8.6, class weekday // C++20 363class weekday; 364 365constexpr bool operator==(const weekday& x, const weekday& y) noexcept; 366constexpr bool operator!=(const weekday& x, const weekday& y) noexcept; 367constexpr weekday operator+(const weekday& x, const days& y) noexcept; 368constexpr weekday operator+(const days& x, const weekday& y) noexcept; 369constexpr weekday operator-(const weekday& x, const days& y) noexcept; 370constexpr days operator-(const weekday& x, const weekday& y) noexcept; 371 372// 25.8.7, class weekday_indexed // C++20 373 374class weekday_indexed; 375constexpr bool operator==(const weekday_indexed& x, const weekday_indexed& y) noexcept; 376constexpr bool operator!=(const weekday_indexed& x, const weekday_indexed& y) noexcept; 377 378// 25.8.8, class weekday_last // C++20 379class weekday_last; 380 381constexpr bool operator==(const weekday_last& x, const weekday_last& y) noexcept; 382constexpr bool operator!=(const weekday_last& x, const weekday_last& y) noexcept; 383 384// 25.8.9, class month_day // C++20 385class month_day; 386 387constexpr bool operator==(const month_day& x, const month_day& y) noexcept; 388constexpr bool operator!=(const month_day& x, const month_day& y) noexcept; 389constexpr bool operator< (const month_day& x, const month_day& y) noexcept; 390constexpr bool operator> (const month_day& x, const month_day& y) noexcept; 391constexpr bool operator<=(const month_day& x, const month_day& y) noexcept; 392constexpr bool operator>=(const month_day& x, const month_day& y) noexcept; 393 394 395// 25.8.10, class month_day_last // C++20 396class month_day_last; 397 398constexpr bool operator==(const month_day_last& x, const month_day_last& y) noexcept; 399constexpr bool operator!=(const month_day_last& x, const month_day_last& y) noexcept; 400constexpr bool operator< (const month_day_last& x, const month_day_last& y) noexcept; 401constexpr bool operator> (const month_day_last& x, const month_day_last& y) noexcept; 402constexpr bool operator<=(const month_day_last& x, const month_day_last& y) noexcept; 403constexpr bool operator>=(const month_day_last& x, const month_day_last& y) noexcept; 404 405// 25.8.11, class month_weekday // C++20 406class month_weekday; 407 408constexpr bool operator==(const month_weekday& x, const month_weekday& y) noexcept; 409constexpr bool operator!=(const month_weekday& x, const month_weekday& y) noexcept; 410 411// 25.8.12, class month_weekday_last // C++20 412class month_weekday_last; 413 414constexpr bool operator==(const month_weekday_last& x, const month_weekday_last& y) noexcept; 415constexpr bool operator!=(const month_weekday_last& x, const month_weekday_last& y) noexcept; 416 417 418// 25.8.13, class year_month // C++20 419class year_month; 420 421constexpr bool operator==(const year_month& x, const year_month& y) noexcept; 422constexpr bool operator!=(const year_month& x, const year_month& y) noexcept; 423constexpr bool operator< (const year_month& x, const year_month& y) noexcept; 424constexpr bool operator> (const year_month& x, const year_month& y) noexcept; 425constexpr bool operator<=(const year_month& x, const year_month& y) noexcept; 426constexpr bool operator>=(const year_month& x, const year_month& y) noexcept; 427 428constexpr year_month operator+(const year_month& ym, const months& dm) noexcept; 429constexpr year_month operator+(const months& dm, const year_month& ym) noexcept; 430constexpr year_month operator-(const year_month& ym, const months& dm) noexcept; 431constexpr months operator-(const year_month& x, const year_month& y) noexcept; 432constexpr year_month operator+(const year_month& ym, const years& dy) noexcept; 433constexpr year_month operator+(const years& dy, const year_month& ym) noexcept; 434constexpr year_month operator-(const year_month& ym, const years& dy) noexcept; 435 436// 25.8.14, class year_month_day class // C++20 437year_month_day; 438 439constexpr bool operator==(const year_month_day& x, const year_month_day& y) noexcept; 440constexpr bool operator!=(const year_month_day& x, const year_month_day& y) noexcept; 441constexpr bool operator< (const year_month_day& x, const year_month_day& y) noexcept; 442constexpr bool operator> (const year_month_day& x, const year_month_day& y) noexcept; 443constexpr bool operator<=(const year_month_day& x, const year_month_day& y) noexcept; 444constexpr bool operator>=(const year_month_day& x, const year_month_day& y) noexcept; 445 446constexpr year_month_day operator+(const year_month_day& ymd, const months& dm) noexcept; 447constexpr year_month_day operator+(const months& dm, const year_month_day& ymd) noexcept; 448constexpr year_month_day operator+(const year_month_day& ymd, const years& dy) noexcept; 449constexpr year_month_day operator+(const years& dy, const year_month_day& ymd) noexcept; 450constexpr year_month_day operator-(const year_month_day& ymd, const months& dm) noexcept; 451constexpr year_month_day operator-(const year_month_day& ymd, const years& dy) noexcept; 452 453 454// 25.8.15, class year_month_day_last // C++20 455class year_month_day_last; 456 457constexpr bool operator==(const year_month_day_last& x, 458 const year_month_day_last& y) noexcept; 459constexpr bool operator!=(const year_month_day_last& x, 460 const year_month_day_last& y) noexcept; 461constexpr bool operator< (const year_month_day_last& x, 462 const year_month_day_last& y) noexcept; 463constexpr bool operator> (const year_month_day_last& x, 464 const year_month_day_last& y) noexcept; 465constexpr bool operator<=(const year_month_day_last& x, 466 const year_month_day_last& y) noexcept; 467constexpr bool operator>=(const year_month_day_last& x, 468 const year_month_day_last& y) noexcept; 469 470constexpr year_month_day_last 471 operator+(const year_month_day_last& ymdl, const months& dm) noexcept; 472constexpr year_month_day_last 473 operator+(const months& dm, const year_month_day_last& ymdl) noexcept; 474constexpr year_month_day_last 475 operator+(const year_month_day_last& ymdl, const years& dy) noexcept; 476constexpr year_month_day_last 477 operator+(const years& dy, const year_month_day_last& ymdl) noexcept; 478constexpr year_month_day_last 479 operator-(const year_month_day_last& ymdl, const months& dm) noexcept; 480constexpr year_month_day_last 481 operator-(const year_month_day_last& ymdl, const years& dy) noexcept; 482 483// 25.8.16, class year_month_weekday // C++20 484class year_month_weekday; 485 486constexpr bool operator==(const year_month_weekday& x, 487 const year_month_weekday& y) noexcept; 488constexpr bool operator!=(const year_month_weekday& x, 489 const year_month_weekday& y) noexcept; 490 491constexpr year_month_weekday 492 operator+(const year_month_weekday& ymwd, const months& dm) noexcept; 493constexpr year_month_weekday 494 operator+(const months& dm, const year_month_weekday& ymwd) noexcept; 495constexpr year_month_weekday 496 operator+(const year_month_weekday& ymwd, const years& dy) noexcept; 497constexpr year_month_weekday 498 operator+(const years& dy, const year_month_weekday& ymwd) noexcept; 499constexpr year_month_weekday 500 operator-(const year_month_weekday& ymwd, const months& dm) noexcept; 501constexpr year_month_weekday 502 operator-(const year_month_weekday& ymwd, const years& dy) noexcept; 503 504// 25.8.17, class year_month_weekday_last // C++20 505class year_month_weekday_last; 506 507constexpr bool operator==(const year_month_weekday_last& x, 508 const year_month_weekday_last& y) noexcept; 509constexpr bool operator!=(const year_month_weekday_last& x, 510 const year_month_weekday_last& y) noexcept; 511constexpr year_month_weekday_last 512 operator+(const year_month_weekday_last& ymwdl, const months& dm) noexcept; 513constexpr year_month_weekday_last 514 operator+(const months& dm, const year_month_weekday_last& ymwdl) noexcept; 515constexpr year_month_weekday_last 516 operator+(const year_month_weekday_last& ymwdl, const years& dy) noexcept; 517constexpr year_month_weekday_last 518 operator+(const years& dy, const year_month_weekday_last& ymwdl) noexcept; 519constexpr year_month_weekday_last 520 operator-(const year_month_weekday_last& ymwdl, const months& dm) noexcept; 521constexpr year_month_weekday_last 522 operator-(const year_month_weekday_last& ymwdl, const years& dy) noexcept; 523 524// 25.8.18, civil calendar conventional syntax operators // C++20 525constexpr year_month 526 operator/(const year& y, const month& m) noexcept; 527constexpr year_month 528 operator/(const year& y, int m) noexcept; 529constexpr month_day 530 operator/(const month& m, const day& d) noexcept; 531constexpr month_day 532 operator/(const month& m, int d) noexcept; 533constexpr month_day 534 operator/(int m, const day& d) noexcept; 535constexpr month_day 536 operator/(const day& d, const month& m) noexcept; 537constexpr month_day 538 operator/(const day& d, int m) noexcept; 539constexpr month_day_last 540 operator/(const month& m, last_spec) noexcept; 541constexpr month_day_last 542 operator/(int m, last_spec) noexcept; 543constexpr month_day_last 544 operator/(last_spec, const month& m) noexcept; 545constexpr month_day_last 546 operator/(last_spec, int m) noexcept; 547constexpr month_weekday 548 operator/(const month& m, const weekday_indexed& wdi) noexcept; 549constexpr month_weekday 550 operator/(int m, const weekday_indexed& wdi) noexcept; 551constexpr month_weekday 552 operator/(const weekday_indexed& wdi, const month& m) noexcept; 553constexpr month_weekday 554 operator/(const weekday_indexed& wdi, int m) noexcept; 555constexpr month_weekday_last 556 operator/(const month& m, const weekday_last& wdl) noexcept; 557constexpr month_weekday_last 558 operator/(int m, const weekday_last& wdl) noexcept; 559constexpr month_weekday_last 560 operator/(const weekday_last& wdl, const month& m) noexcept; 561constexpr month_weekday_last 562 operator/(const weekday_last& wdl, int m) noexcept; 563constexpr year_month_day 564 operator/(const year_month& ym, const day& d) noexcept; 565constexpr year_month_day 566 operator/(const year_month& ym, int d) noexcept; 567constexpr year_month_day 568 operator/(const year& y, const month_day& md) noexcept; 569constexpr year_month_day 570 operator/(int y, const month_day& md) noexcept; 571constexpr year_month_day 572 operator/(const month_day& md, const year& y) noexcept; 573constexpr year_month_day 574 operator/(const month_day& md, int y) noexcept; 575constexpr year_month_day_last 576 operator/(const year_month& ym, last_spec) noexcept; 577constexpr year_month_day_last 578 operator/(const year& y, const month_day_last& mdl) noexcept; 579constexpr year_month_day_last 580 operator/(int y, const month_day_last& mdl) noexcept; 581constexpr year_month_day_last 582 operator/(const month_day_last& mdl, const year& y) noexcept; 583constexpr year_month_day_last 584 operator/(const month_day_last& mdl, int y) noexcept; 585constexpr year_month_weekday 586 operator/(const year_month& ym, const weekday_indexed& wdi) noexcept; 587constexpr year_month_weekday 588 operator/(const year& y, const month_weekday& mwd) noexcept; 589constexpr year_month_weekday 590 operator/(int y, const month_weekday& mwd) noexcept; 591constexpr year_month_weekday 592 operator/(const month_weekday& mwd, const year& y) noexcept; 593constexpr year_month_weekday 594 operator/(const month_weekday& mwd, int y) noexcept; 595constexpr year_month_weekday_last 596 operator/(const year_month& ym, const weekday_last& wdl) noexcept; 597constexpr year_month_weekday_last 598 operator/(const year& y, const month_weekday_last& mwdl) noexcept; 599constexpr year_month_weekday_last 600 operator/(int y, const month_weekday_last& mwdl) noexcept; 601constexpr year_month_weekday_last 602 operator/(const month_weekday_last& mwdl, const year& y) noexcept; 603constexpr year_month_weekday_last 604 operator/(const month_weekday_last& mwdl, int y) noexcept; 605 606// 26.9, class template hh_mm_ss 607template <class Duration> 608class hh_mm_ss 609{ 610 bool is_neg; // exposition only 611 chrono::hours h; // exposition only 612 chrono::minutes m; // exposition only 613 chrono::seconds s; // exposition only 614 precision ss; // exposition only 615 616public: 617 static unsigned constexpr fractional_width = see below; 618 using precision = see below; 619 620 constexpr hh_mm_ss() noexcept : hh_mm_ss{Duration::zero()} {} 621 constexpr explicit hh_mm_ss(Duration d) noexcept; 622 623 constexpr bool is_negative() const noexcept; 624 constexpr chrono::hours hours() const noexcept; 625 constexpr chrono::minutes minutes() const noexcept; 626 constexpr chrono::seconds seconds() const noexcept; 627 constexpr precision subseconds() const noexcept; 628 629 constexpr explicit operator precision() const noexcept; 630 constexpr precision to_duration() const noexcept; 631}; 632 633// 26.10, 12/24 hour functions 634constexpr bool is_am(hours const& h) noexcept; 635constexpr bool is_pm(hours const& h) noexcept; 636constexpr hours make12(const hours& h) noexcept; 637constexpr hours make24(const hours& h, bool is_pm) noexcept; 638 639// 25.10.5, class time_zone // C++20 640enum class choose {earliest, latest}; 641class time_zone; 642bool operator==(const time_zone& x, const time_zone& y) noexcept; 643bool operator!=(const time_zone& x, const time_zone& y) noexcept; 644bool operator<(const time_zone& x, const time_zone& y) noexcept; 645bool operator>(const time_zone& x, const time_zone& y) noexcept; 646bool operator<=(const time_zone& x, const time_zone& y) noexcept; 647bool operator>=(const time_zone& x, const time_zone& y) noexcept; 648 649// calendrical constants 650inline constexpr last_spec last{}; // C++20 651inline constexpr chrono::weekday Sunday{0}; // C++20 652inline constexpr chrono::weekday Monday{1}; // C++20 653inline constexpr chrono::weekday Tuesday{2}; // C++20 654inline constexpr chrono::weekday Wednesday{3}; // C++20 655inline constexpr chrono::weekday Thursday{4}; // C++20 656inline constexpr chrono::weekday Friday{5}; // C++20 657inline constexpr chrono::weekday Saturday{6}; // C++20 658 659inline constexpr chrono::month January{1}; // C++20 660inline constexpr chrono::month February{2}; // C++20 661inline constexpr chrono::month March{3}; // C++20 662inline constexpr chrono::month April{4}; // C++20 663inline constexpr chrono::month May{5}; // C++20 664inline constexpr chrono::month June{6}; // C++20 665inline constexpr chrono::month July{7}; // C++20 666inline constexpr chrono::month August{8}; // C++20 667inline constexpr chrono::month September{9}; // C++20 668inline constexpr chrono::month October{10}; // C++20 669inline constexpr chrono::month November{11}; // C++20 670inline constexpr chrono::month December{12}; // C++20 671} // chrono 672 673inline namespace literals { 674 inline namespace chrono_literals { 675constexpr chrono::hours operator ""h(unsigned long long); // C++14 676constexpr chrono::duration<unspecified , ratio<3600,1>> operator ""h(long double); // C++14 677constexpr chrono::minutes operator ""min(unsigned long long); // C++14 678constexpr chrono::duration<unspecified , ratio<60,1>> operator ""min(long double); // C++14 679constexpr chrono::seconds operator ""s(unsigned long long); // C++14 680constexpr chrono::duration<unspecified > operator ""s(long double); // C++14 681constexpr chrono::milliseconds operator ""ms(unsigned long long); // C++14 682constexpr chrono::duration<unspecified , milli> operator ""ms(long double); // C++14 683constexpr chrono::microseconds operator ""us(unsigned long long); // C++14 684constexpr chrono::duration<unspecified , micro> operator ""us(long double); // C++14 685constexpr chrono::nanoseconds operator ""ns(unsigned long long); // C++14 686constexpr chrono::duration<unspecified , nano> operator ""ns(long double); // C++14 687constexpr chrono::day operator ""d(unsigned long long d) noexcept; // C++20 688constexpr chrono::year operator ""y(unsigned long long y) noexcept; // C++20 689} // chrono_literals 690} // literals 691 692} // std 693*/ 694 695#include <__assert> // all public C++ headers provide the assertion handler 696#include <__chrono/calendar.h> 697#include <__chrono/convert_to_timespec.h> 698#include <__chrono/day.h> 699#include <__chrono/duration.h> 700#include <__chrono/file_clock.h> 701#include <__chrono/hh_mm_ss.h> 702#include <__chrono/high_resolution_clock.h> 703#include <__chrono/literals.h> 704#include <__chrono/month.h> 705#include <__chrono/month_weekday.h> 706#include <__chrono/monthday.h> 707#include <__chrono/steady_clock.h> 708#include <__chrono/system_clock.h> 709#include <__chrono/time_point.h> 710#include <__chrono/weekday.h> 711#include <__chrono/year.h> 712#include <__chrono/year_month.h> 713#include <__chrono/year_month_day.h> 714#include <__chrono/year_month_weekday.h> 715#include <__config> 716#include <version> 717 718// standard-mandated includes 719#include <compare> 720 721#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 722# pragma GCC system_header 723#endif 724 725#endif // _LIBCPP_CHRONO 726