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 16namespace std 17{ 18namespace chrono 19{ 20 21template <class ToDuration, class Rep, class Period> 22constexpr 23ToDuration 24duration_cast(const duration<Rep, Period>& fd); 25 26template <class Rep> struct treat_as_floating_point : is_floating_point<Rep> {}; 27 28template <class Rep> inline constexpr bool treat_as_floating_point_v 29 = treat_as_floating_point<Rep>::value; // C++17 30 31template <class Rep> 32struct duration_values 33{ 34public: 35 static constexpr Rep zero(); // noexcept in C++20 36 static constexpr Rep max(); // noexcept in C++20 37 static constexpr Rep min(); // noexcept in C++20 38}; 39 40// duration 41 42template <class Rep, class Period = ratio<1>> 43class duration 44{ 45 static_assert(!__is_duration<Rep>::value, "A duration representation can not be a duration"); 46 static_assert(__is_ratio<Period>::value, "Second template parameter of duration must be a std::ratio"); 47 static_assert(Period::num > 0, "duration period must be positive"); 48public: 49 typedef Rep rep; 50 typedef typename _Period::type period; 51 52 constexpr duration() = default; 53 template <class Rep2> 54 constexpr explicit duration(const Rep2& r, 55 typename enable_if 56 < 57 is_convertible<Rep2, rep>::value && 58 (treat_as_floating_point<rep>::value || 59 !treat_as_floating_point<rep>::value && !treat_as_floating_point<Rep2>::value) 60 >::type* = 0); 61 62 // conversions 63 template <class Rep2, class Period2> 64 constexpr duration(const duration<Rep2, Period2>& d, 65 typename enable_if 66 < 67 treat_as_floating_point<rep>::value || 68 ratio_divide<Period2, period>::type::den == 1 69 >::type* = 0); 70 71 // observer 72 73 constexpr rep count() const; 74 75 // arithmetic 76 77 constexpr common_type<duration>::type operator+() const; 78 constexpr common_type<duration>::type operator-() const; 79 constexpr duration& operator++(); // constexpr in C++17 80 constexpr duration operator++(int); // constexpr in C++17 81 constexpr duration& operator--(); // constexpr in C++17 82 constexpr duration operator--(int); // constexpr in C++17 83 84 constexpr duration& operator+=(const duration& d); // constexpr in C++17 85 constexpr duration& operator-=(const duration& d); // constexpr in C++17 86 87 duration& operator*=(const rep& rhs); // constexpr in C++17 88 duration& operator/=(const rep& rhs); // constexpr in C++17 89 duration& operator%=(const rep& rhs); // constexpr in C++17 90 duration& operator%=(const duration& rhs); // constexpr in C++17 91 92 // special values 93 94 static constexpr duration zero(); // noexcept in C++20 95 static constexpr duration min(); // noexcept in C++20 96 static constexpr duration max(); // noexcept in C++20 97}; 98 99typedef duration<long long, nano> nanoseconds; 100typedef duration<long long, micro> microseconds; 101typedef duration<long long, milli> milliseconds; 102typedef duration<long long > seconds; 103typedef duration< long, ratio< 60> > minutes; 104typedef duration< long, ratio<3600> > hours; 105 106template <class Clock, class Duration = typename Clock::duration> 107class time_point 108{ 109public: 110 typedef Clock clock; 111 typedef Duration duration; 112 typedef typename duration::rep rep; 113 typedef typename duration::period period; 114private: 115 duration d_; // exposition only 116 117public: 118 time_point(); // has value "epoch" // constexpr in C++14 119 explicit time_point(const duration& d); // same as time_point() + d // constexpr in C++14 120 121 // conversions 122 template <class Duration2> 123 time_point(const time_point<clock, Duration2>& t); // constexpr in C++14 124 125 // observer 126 127 duration time_since_epoch() const; // constexpr in C++14 128 129 // arithmetic 130 131 time_point& operator+=(const duration& d); // constexpr in C++17 132 time_point& operator-=(const duration& d); // constexpr in C++17 133 134 // special values 135 136 static constexpr time_point min(); // noexcept in C++20 137 static constexpr time_point max(); // noexcept in C++20 138}; 139 140} // chrono 141 142// common_type traits 143template <class Rep1, class Period1, class Rep2, class Period2> 144 struct common_type<chrono::duration<Rep1, Period1>, chrono::duration<Rep2, Period2>>; 145 146template <class Clock, class Duration1, class Duration2> 147 struct common_type<chrono::time_point<Clock, Duration1>, chrono::time_point<Clock, Duration2>>; 148 149namespace chrono { 150 151// duration arithmetic 152template <class Rep1, class Period1, class Rep2, class Period2> 153 constexpr 154 typename common_type<duration<Rep1, Period1>, duration<Rep2, Period2>>::type 155 operator+(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 156template <class Rep1, class Period1, class Rep2, class Period2> 157 constexpr 158 typename common_type<duration<Rep1, Period1>, duration<Rep2, Period2>>::type 159 operator-(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 160template <class Rep1, class Period, class Rep2> 161 constexpr 162 duration<typename common_type<Rep1, Rep2>::type, Period> 163 operator*(const duration<Rep1, Period>& d, const Rep2& s); 164template <class Rep1, class Period, class Rep2> 165 constexpr 166 duration<typename common_type<Rep1, Rep2>::type, Period> 167 operator*(const Rep1& s, const duration<Rep2, Period>& d); 168template <class Rep1, class Period, class Rep2> 169 constexpr 170 duration<typename common_type<Rep1, Rep2>::type, Period> 171 operator/(const duration<Rep1, Period>& d, const Rep2& s); 172template <class Rep1, class Period1, class Rep2, class Period2> 173 constexpr 174 typename common_type<Rep1, Rep2>::type 175 operator/(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 176 177// duration comparisons 178template <class Rep1, class Period1, class Rep2, class Period2> 179 constexpr 180 bool operator==(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 181template <class Rep1, class Period1, class Rep2, class Period2> 182 constexpr 183 bool operator!=(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 184template <class Rep1, class Period1, class Rep2, class Period2> 185 constexpr 186 bool operator< (const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 187template <class Rep1, class Period1, class Rep2, class Period2> 188 constexpr 189 bool operator<=(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 190template <class Rep1, class Period1, class Rep2, class Period2> 191 constexpr 192 bool operator> (const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 193template <class Rep1, class Period1, class Rep2, class Period2> 194 constexpr 195 bool operator>=(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 196 197// duration_cast 198template <class ToDuration, class Rep, class Period> 199 ToDuration duration_cast(const duration<Rep, Period>& d); 200 201template <class ToDuration, class Rep, class Period> 202 constexpr ToDuration floor(const duration<Rep, Period>& d); // C++17 203template <class ToDuration, class Rep, class Period> 204 constexpr ToDuration ceil(const duration<Rep, Period>& d); // C++17 205template <class ToDuration, class Rep, class Period> 206 constexpr ToDuration round(const duration<Rep, Period>& d); // C++17 207 208// duration I/O is elsewhere 209 210// time_point arithmetic (all constexpr in C++14) 211template <class Clock, class Duration1, class Rep2, class Period2> 212 time_point<Clock, typename common_type<Duration1, duration<Rep2, Period2>>::type> 213 operator+(const time_point<Clock, Duration1>& lhs, const duration<Rep2, Period2>& rhs); 214template <class Rep1, class Period1, class Clock, class Duration2> 215 time_point<Clock, typename common_type<duration<Rep1, Period1>, Duration2>::type> 216 operator+(const duration<Rep1, Period1>& lhs, const time_point<Clock, Duration2>& rhs); 217template <class Clock, class Duration1, class Rep2, class Period2> 218 time_point<Clock, typename common_type<Duration1, duration<Rep2, Period2>>::type> 219 operator-(const time_point<Clock, Duration1>& lhs, const duration<Rep2, Period2>& rhs); 220template <class Clock, class Duration1, class Duration2> 221 typename common_type<Duration1, Duration2>::type 222 operator-(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); 223 224// time_point comparisons (all constexpr in C++14) 225template <class Clock, class Duration1, class Duration2> 226 bool operator==(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); 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); 237 238// time_point_cast (constexpr in C++14) 239 240template <class ToDuration, class Clock, class Duration> 241 time_point<Clock, ToDuration> time_point_cast(const time_point<Clock, Duration>& t); 242 243template <class ToDuration, class Clock, class Duration> 244 constexpr time_point<Clock, ToDuration> 245 floor(const time_point<Clock, Duration>& tp); // C++17 246 247template <class ToDuration, class Clock, class Duration> 248 constexpr time_point<Clock, ToDuration> 249 ceil(const time_point<Clock, Duration>& tp); // C++17 250 251template <class ToDuration, class Clock, class Duration> 252 constexpr time_point<Clock, ToDuration> 253 round(const time_point<Clock, Duration>& tp); // C++17 254 255template <class Rep, class Period> 256 constexpr duration<Rep, Period> abs(duration<Rep, Period> d); // C++17 257 258// Clocks 259 260class system_clock 261{ 262public: 263 typedef microseconds duration; 264 typedef duration::rep rep; 265 typedef duration::period period; 266 typedef chrono::time_point<system_clock> time_point; 267 static const bool is_steady = false; // constexpr in C++14 268 269 static time_point now() noexcept; 270 static time_t to_time_t (const time_point& __t) noexcept; 271 static time_point from_time_t(time_t __t) noexcept; 272}; 273 274template <class Duration> 275 using sys_time = time_point<system_clock, Duration>; // C++20 276using sys_seconds = sys_time<seconds>; // C++20 277using sys_days = sys_time<days>; // C++20 278 279class file_clock // C++20 280{ 281public: 282 typedef see-below rep; 283 typedef nano period; 284 typedef chrono::duration<rep, period> duration; 285 typedef chrono::time_point<file_clock> time_point; 286 static constexpr bool is_steady = false; 287 288 static time_point now() noexcept; 289 290 template<class Duration> 291 static sys_time<see-below> to_sys(const file_time<Duration>&); 292 293 template<class Duration> 294 static file_time<see-below> from_sys(const sys_time<Duration>&); 295}; 296 297template<class Duration> 298 using file_time = time_point<file_clock, Duration>; // C++20 299 300class steady_clock 301{ 302public: 303 typedef nanoseconds duration; 304 typedef duration::rep rep; 305 typedef duration::period period; 306 typedef chrono::time_point<steady_clock, duration> time_point; 307 static const bool is_steady = true; // constexpr in C++14 308 309 static time_point now() noexcept; 310}; 311 312typedef steady_clock high_resolution_clock; 313 314// 25.7.8, local time // C++20 315struct local_t {}; 316template<class Duration> 317 using local_time = time_point<local_t, Duration>; 318using local_seconds = local_time<seconds>; 319using local_days = local_time<days>; 320 321// 25.8.2, class last_spec // C++20 322struct last_spec; 323 324// 25.8.3, class day // C++20 325 326class day; 327constexpr bool operator==(const day& x, const day& y) noexcept; 328constexpr bool operator!=(const day& x, const day& y) noexcept; 329constexpr bool operator< (const day& x, const day& y) noexcept; 330constexpr bool operator> (const day& x, const day& y) noexcept; 331constexpr bool operator<=(const day& x, const day& y) noexcept; 332constexpr bool operator>=(const day& x, const day& y) noexcept; 333constexpr day operator+(const day& x, const days& y) noexcept; 334constexpr day operator+(const days& x, const day& y) noexcept; 335constexpr day operator-(const day& x, const days& y) noexcept; 336constexpr days operator-(const day& x, const day& y) noexcept; 337 338// 25.8.4, class month // C++20 339class month; 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 bool operator<=(const month& x, const month& y) noexcept; 345constexpr bool operator>=(const month& x, const month& y) noexcept; 346constexpr month operator+(const month& x, const months& y) noexcept; 347constexpr month operator+(const months& x, const month& y) noexcept; 348constexpr month operator-(const month& x, const months& y) noexcept; 349constexpr months operator-(const month& x, const month& y) noexcept; 350 351// 25.8.5, class year // C++20 352class year; 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 bool operator<=(const year& x, const year& y) noexcept; 358constexpr bool operator>=(const year& x, const year& y) noexcept; 359constexpr year operator+(const year& x, const years& y) noexcept; 360constexpr year operator+(const years& x, const year& y) noexcept; 361constexpr year operator-(const year& x, const years& y) noexcept; 362constexpr years operator-(const year& x, const year& y) noexcept; 363 364// 25.8.6, class weekday // C++20 365class weekday; 366 367constexpr bool operator==(const weekday& x, const weekday& y) noexcept; 368constexpr bool operator!=(const weekday& x, const weekday& y) noexcept; 369constexpr weekday operator+(const weekday& x, const days& y) noexcept; 370constexpr weekday operator+(const days& x, const weekday& y) noexcept; 371constexpr weekday operator-(const weekday& x, const days& y) noexcept; 372constexpr days operator-(const weekday& x, const weekday& y) noexcept; 373 374// 25.8.7, class weekday_indexed // C++20 375 376class weekday_indexed; 377constexpr bool operator==(const weekday_indexed& x, const weekday_indexed& y) noexcept; 378constexpr bool operator!=(const weekday_indexed& x, const weekday_indexed& y) noexcept; 379 380// 25.8.8, class weekday_last // C++20 381class weekday_last; 382 383constexpr bool operator==(const weekday_last& x, const weekday_last& y) noexcept; 384constexpr bool operator!=(const weekday_last& x, const weekday_last& y) noexcept; 385 386// 25.8.9, class month_day // C++20 387class month_day; 388 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; 393constexpr bool operator<=(const month_day& x, const month_day& y) noexcept; 394constexpr bool operator>=(const month_day& x, const month_day& y) noexcept; 395 396 397// 25.8.10, class month_day_last // C++20 398class month_day_last; 399 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; 404constexpr bool operator<=(const month_day_last& x, const month_day_last& y) noexcept; 405constexpr bool operator>=(const month_day_last& x, const month_day_last& y) noexcept; 406 407// 25.8.11, class month_weekday // C++20 408class month_weekday; 409 410constexpr bool operator==(const month_weekday& x, const month_weekday& y) noexcept; 411constexpr bool operator!=(const month_weekday& x, const month_weekday& y) noexcept; 412 413// 25.8.12, class month_weekday_last // C++20 414class month_weekday_last; 415 416constexpr bool operator==(const month_weekday_last& x, const month_weekday_last& y) noexcept; 417constexpr bool operator!=(const month_weekday_last& x, const month_weekday_last& y) noexcept; 418 419 420// 25.8.13, class year_month // C++20 421class year_month; 422 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; 427constexpr bool operator<=(const year_month& x, const year_month& y) noexcept; 428constexpr bool operator>=(const year_month& x, const year_month& y) noexcept; 429 430constexpr year_month operator+(const year_month& ym, const months& dm) noexcept; 431constexpr year_month operator+(const months& dm, const year_month& ym) noexcept; 432constexpr year_month operator-(const year_month& ym, const months& dm) noexcept; 433constexpr months operator-(const year_month& x, const year_month& y) noexcept; 434constexpr year_month operator+(const year_month& ym, const years& dy) noexcept; 435constexpr year_month operator+(const years& dy, const year_month& ym) noexcept; 436constexpr year_month operator-(const year_month& ym, const years& dy) noexcept; 437 438// 25.8.14, class year_month_day class // C++20 439year_month_day; 440 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; 445constexpr bool operator<=(const year_month_day& x, const year_month_day& y) noexcept; 446constexpr bool operator>=(const year_month_day& x, const year_month_day& y) noexcept; 447 448constexpr year_month_day operator+(const year_month_day& ymd, const months& dm) noexcept; 449constexpr year_month_day operator+(const months& dm, const year_month_day& ymd) noexcept; 450constexpr year_month_day operator+(const year_month_day& ymd, const years& dy) noexcept; 451constexpr year_month_day operator+(const years& dy, const year_month_day& ymd) noexcept; 452constexpr year_month_day operator-(const year_month_day& ymd, const months& dm) noexcept; 453constexpr year_month_day operator-(const year_month_day& ymd, const years& dy) noexcept; 454 455 456// 25.8.15, class year_month_day_last // C++20 457class year_month_day_last; 458 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; 469constexpr bool operator>=(const year_month_day_last& x, 470 const year_month_day_last& y) noexcept; 471 472constexpr year_month_day_last 473 operator+(const year_month_day_last& ymdl, const months& dm) noexcept; 474constexpr year_month_day_last 475 operator+(const months& dm, const year_month_day_last& ymdl) noexcept; 476constexpr year_month_day_last 477 operator+(const year_month_day_last& ymdl, const years& dy) noexcept; 478constexpr year_month_day_last 479 operator+(const years& dy, const year_month_day_last& ymdl) noexcept; 480constexpr year_month_day_last 481 operator-(const year_month_day_last& ymdl, const months& dm) noexcept; 482constexpr year_month_day_last 483 operator-(const year_month_day_last& ymdl, const years& dy) noexcept; 484 485// 25.8.16, class year_month_weekday // C++20 486class year_month_weekday; 487 488constexpr bool operator==(const year_month_weekday& x, 489 const year_month_weekday& y) noexcept; 490constexpr bool operator!=(const year_month_weekday& x, 491 const year_month_weekday& y) noexcept; 492 493constexpr year_month_weekday 494 operator+(const year_month_weekday& ymwd, const months& dm) noexcept; 495constexpr year_month_weekday 496 operator+(const months& dm, const year_month_weekday& ymwd) noexcept; 497constexpr year_month_weekday 498 operator+(const year_month_weekday& ymwd, const years& dy) noexcept; 499constexpr year_month_weekday 500 operator+(const years& dy, const year_month_weekday& ymwd) noexcept; 501constexpr year_month_weekday 502 operator-(const year_month_weekday& ymwd, const months& dm) noexcept; 503constexpr year_month_weekday 504 operator-(const year_month_weekday& ymwd, const years& dy) noexcept; 505 506// 25.8.17, class year_month_weekday_last // C++20 507class year_month_weekday_last; 508 509constexpr bool operator==(const year_month_weekday_last& x, 510 const year_month_weekday_last& y) noexcept; 511constexpr bool operator!=(const year_month_weekday_last& x, 512 const year_month_weekday_last& y) noexcept; 513constexpr year_month_weekday_last 514 operator+(const year_month_weekday_last& ymwdl, const months& dm) noexcept; 515constexpr year_month_weekday_last 516 operator+(const months& dm, const year_month_weekday_last& ymwdl) noexcept; 517constexpr year_month_weekday_last 518 operator+(const year_month_weekday_last& ymwdl, const years& dy) noexcept; 519constexpr year_month_weekday_last 520 operator+(const years& dy, const year_month_weekday_last& ymwdl) noexcept; 521constexpr year_month_weekday_last 522 operator-(const year_month_weekday_last& ymwdl, const months& dm) noexcept; 523constexpr year_month_weekday_last 524 operator-(const year_month_weekday_last& ymwdl, const years& dy) noexcept; 525 526// 25.8.18, civil calendar conventional syntax operators // C++20 527constexpr year_month 528 operator/(const year& y, const month& m) noexcept; 529constexpr year_month 530 operator/(const year& y, int m) noexcept; 531constexpr month_day 532 operator/(const month& m, const day& d) noexcept; 533constexpr month_day 534 operator/(const month& m, int d) noexcept; 535constexpr month_day 536 operator/(int m, const day& d) noexcept; 537constexpr month_day 538 operator/(const day& d, const month& m) noexcept; 539constexpr month_day 540 operator/(const day& d, int m) noexcept; 541constexpr month_day_last 542 operator/(const month& m, last_spec) noexcept; 543constexpr month_day_last 544 operator/(int m, last_spec) noexcept; 545constexpr month_day_last 546 operator/(last_spec, const month& m) noexcept; 547constexpr month_day_last 548 operator/(last_spec, int m) noexcept; 549constexpr month_weekday 550 operator/(const month& m, const weekday_indexed& wdi) noexcept; 551constexpr month_weekday 552 operator/(int m, const weekday_indexed& wdi) noexcept; 553constexpr month_weekday 554 operator/(const weekday_indexed& wdi, const month& m) noexcept; 555constexpr month_weekday 556 operator/(const weekday_indexed& wdi, int m) noexcept; 557constexpr month_weekday_last 558 operator/(const month& m, const weekday_last& wdl) noexcept; 559constexpr month_weekday_last 560 operator/(int m, const weekday_last& wdl) noexcept; 561constexpr month_weekday_last 562 operator/(const weekday_last& wdl, const month& m) noexcept; 563constexpr month_weekday_last 564 operator/(const weekday_last& wdl, int m) noexcept; 565constexpr year_month_day 566 operator/(const year_month& ym, const day& d) noexcept; 567constexpr year_month_day 568 operator/(const year_month& ym, int d) noexcept; 569constexpr year_month_day 570 operator/(const year& y, const month_day& md) noexcept; 571constexpr year_month_day 572 operator/(int y, const month_day& md) noexcept; 573constexpr year_month_day 574 operator/(const month_day& md, const year& y) noexcept; 575constexpr year_month_day 576 operator/(const month_day& md, int y) noexcept; 577constexpr year_month_day_last 578 operator/(const year_month& ym, last_spec) noexcept; 579constexpr year_month_day_last 580 operator/(const year& y, const month_day_last& mdl) noexcept; 581constexpr year_month_day_last 582 operator/(int y, const month_day_last& mdl) noexcept; 583constexpr year_month_day_last 584 operator/(const month_day_last& mdl, const year& y) noexcept; 585constexpr year_month_day_last 586 operator/(const month_day_last& mdl, int y) noexcept; 587constexpr year_month_weekday 588 operator/(const year_month& ym, const weekday_indexed& wdi) noexcept; 589constexpr year_month_weekday 590 operator/(const year& y, const month_weekday& mwd) noexcept; 591constexpr year_month_weekday 592 operator/(int y, const month_weekday& mwd) noexcept; 593constexpr year_month_weekday 594 operator/(const month_weekday& mwd, const year& y) noexcept; 595constexpr year_month_weekday 596 operator/(const month_weekday& mwd, int y) noexcept; 597constexpr year_month_weekday_last 598 operator/(const year_month& ym, const weekday_last& wdl) noexcept; 599constexpr year_month_weekday_last 600 operator/(const year& y, const month_weekday_last& mwdl) noexcept; 601constexpr year_month_weekday_last 602 operator/(int y, const month_weekday_last& mwdl) noexcept; 603constexpr year_month_weekday_last 604 operator/(const month_weekday_last& mwdl, const year& y) noexcept; 605constexpr year_month_weekday_last 606 operator/(const month_weekday_last& mwdl, int y) noexcept; 607 608// 26.9, class template hh_mm_ss 609template <class Duration> 610class hh_mm_ss 611{ 612 bool is_neg; // exposition only 613 chrono::hours h; // exposition only 614 chrono::minutes m; // exposition only 615 chrono::seconds s; // exposition only 616 precision ss; // exposition only 617 618public: 619 static unsigned constexpr fractional_width = see below; 620 using precision = see below; 621 622 constexpr hh_mm_ss() noexcept : hh_mm_ss{Duration::zero()} {} 623 constexpr explicit hh_mm_ss(Duration d) noexcept; 624 625 constexpr bool is_negative() const noexcept; 626 constexpr chrono::hours hours() const noexcept; 627 constexpr chrono::minutes minutes() const noexcept; 628 constexpr chrono::seconds seconds() const noexcept; 629 constexpr precision subseconds() const noexcept; 630 631 constexpr explicit operator precision() const noexcept; 632 constexpr precision to_duration() const noexcept; 633}; 634 635// 26.10, 12/24 hour functions 636constexpr bool is_am(hours const& h) noexcept; 637constexpr bool is_pm(hours const& h) noexcept; 638constexpr hours make12(const hours& h) noexcept; 639constexpr hours make24(const hours& h, bool is_pm) noexcept; 640 641// 25.10.5, class time_zone // C++20 642enum class choose {earliest, latest}; 643class time_zone; 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; 648bool operator<=(const time_zone& x, const time_zone& y) noexcept; 649bool operator>=(const time_zone& x, const time_zone& y) noexcept; 650 651// calendrical constants 652inline constexpr last_spec last{}; // C++20 653inline constexpr chrono::weekday Sunday{0}; // C++20 654inline constexpr chrono::weekday Monday{1}; // C++20 655inline constexpr chrono::weekday Tuesday{2}; // C++20 656inline constexpr chrono::weekday Wednesday{3}; // C++20 657inline constexpr chrono::weekday Thursday{4}; // C++20 658inline constexpr chrono::weekday Friday{5}; // C++20 659inline constexpr chrono::weekday Saturday{6}; // C++20 660 661inline constexpr chrono::month January{1}; // C++20 662inline constexpr chrono::month February{2}; // C++20 663inline constexpr chrono::month March{3}; // C++20 664inline constexpr chrono::month April{4}; // C++20 665inline constexpr chrono::month May{5}; // C++20 666inline constexpr chrono::month June{6}; // C++20 667inline constexpr chrono::month July{7}; // C++20 668inline constexpr chrono::month August{8}; // C++20 669inline constexpr chrono::month September{9}; // C++20 670inline constexpr chrono::month October{10}; // C++20 671inline constexpr chrono::month November{11}; // C++20 672inline constexpr chrono::month December{12}; // C++20 673} // chrono 674 675inline namespace literals { 676 inline namespace chrono_literals { 677constexpr chrono::hours operator ""h(unsigned long long); // C++14 678constexpr chrono::duration<unspecified , ratio<3600,1>> operator ""h(long double); // C++14 679constexpr chrono::minutes operator ""min(unsigned long long); // C++14 680constexpr chrono::duration<unspecified , ratio<60,1>> operator ""min(long double); // C++14 681constexpr chrono::seconds operator ""s(unsigned long long); // C++14 682constexpr chrono::duration<unspecified > operator ""s(long double); // C++14 683constexpr chrono::milliseconds operator ""ms(unsigned long long); // C++14 684constexpr chrono::duration<unspecified , milli> operator ""ms(long double); // C++14 685constexpr chrono::microseconds operator ""us(unsigned long long); // C++14 686constexpr chrono::duration<unspecified , micro> operator ""us(long double); // C++14 687constexpr chrono::nanoseconds operator ""ns(unsigned long long); // C++14 688constexpr chrono::duration<unspecified , nano> operator ""ns(long double); // C++14 689constexpr chrono::day operator ""d(unsigned long long d) noexcept; // C++20 690constexpr chrono::year operator ""y(unsigned long long y) noexcept; // C++20 691} // chrono_literals 692} // literals 693 694} // std 695*/ 696 697#include <__availability> 698#include <__config> 699#include <compare> 700#include <ctime> 701#include <limits> 702#include <ratio> 703#include <type_traits> 704#include <version> 705 706#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 707#pragma GCC system_header 708#endif 709 710_LIBCPP_PUSH_MACROS 711#include <__undef_macros> 712 713#ifndef _LIBCPP_CXX03_LANG 714_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM 715struct _FilesystemClock; 716_LIBCPP_END_NAMESPACE_FILESYSTEM 717#endif // !_LIBCPP_CXX03_LANG 718 719_LIBCPP_BEGIN_NAMESPACE_STD 720 721namespace chrono 722{ 723 724template <class _Rep, class _Period = ratio<1> > class _LIBCPP_TEMPLATE_VIS duration; 725 726template <class _Tp> 727struct __is_duration : false_type {}; 728 729template <class _Rep, class _Period> 730struct __is_duration<duration<_Rep, _Period> > : true_type {}; 731 732template <class _Rep, class _Period> 733struct __is_duration<const duration<_Rep, _Period> > : true_type {}; 734 735template <class _Rep, class _Period> 736struct __is_duration<volatile duration<_Rep, _Period> > : true_type {}; 737 738template <class _Rep, class _Period> 739struct __is_duration<const volatile duration<_Rep, _Period> > : true_type {}; 740 741} // chrono 742 743template <class _Rep1, class _Period1, class _Rep2, class _Period2> 744struct _LIBCPP_TEMPLATE_VIS common_type<chrono::duration<_Rep1, _Period1>, 745 chrono::duration<_Rep2, _Period2> > 746{ 747 typedef chrono::duration<typename common_type<_Rep1, _Rep2>::type, 748 typename __ratio_gcd<_Period1, _Period2>::type> type; 749}; 750 751namespace chrono { 752 753// duration_cast 754 755template <class _FromDuration, class _ToDuration, 756 class _Period = typename ratio_divide<typename _FromDuration::period, typename _ToDuration::period>::type, 757 bool = _Period::num == 1, 758 bool = _Period::den == 1> 759struct __duration_cast; 760 761template <class _FromDuration, class _ToDuration, class _Period> 762struct __duration_cast<_FromDuration, _ToDuration, _Period, true, true> 763{ 764 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 765 _ToDuration operator()(const _FromDuration& __fd) const 766 { 767 return _ToDuration(static_cast<typename _ToDuration::rep>(__fd.count())); 768 } 769}; 770 771template <class _FromDuration, class _ToDuration, class _Period> 772struct __duration_cast<_FromDuration, _ToDuration, _Period, true, false> 773{ 774 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 775 _ToDuration operator()(const _FromDuration& __fd) const 776 { 777 typedef typename common_type<typename _ToDuration::rep, typename _FromDuration::rep, intmax_t>::type _Ct; 778 return _ToDuration(static_cast<typename _ToDuration::rep>( 779 static_cast<_Ct>(__fd.count()) / static_cast<_Ct>(_Period::den))); 780 } 781}; 782 783template <class _FromDuration, class _ToDuration, class _Period> 784struct __duration_cast<_FromDuration, _ToDuration, _Period, false, true> 785{ 786 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 787 _ToDuration operator()(const _FromDuration& __fd) const 788 { 789 typedef typename common_type<typename _ToDuration::rep, typename _FromDuration::rep, intmax_t>::type _Ct; 790 return _ToDuration(static_cast<typename _ToDuration::rep>( 791 static_cast<_Ct>(__fd.count()) * static_cast<_Ct>(_Period::num))); 792 } 793}; 794 795template <class _FromDuration, class _ToDuration, class _Period> 796struct __duration_cast<_FromDuration, _ToDuration, _Period, false, false> 797{ 798 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 799 _ToDuration operator()(const _FromDuration& __fd) const 800 { 801 typedef typename common_type<typename _ToDuration::rep, typename _FromDuration::rep, intmax_t>::type _Ct; 802 return _ToDuration(static_cast<typename _ToDuration::rep>( 803 static_cast<_Ct>(__fd.count()) * static_cast<_Ct>(_Period::num) 804 / static_cast<_Ct>(_Period::den))); 805 } 806}; 807 808template <class _ToDuration, class _Rep, class _Period> 809inline _LIBCPP_INLINE_VISIBILITY 810_LIBCPP_CONSTEXPR 811typename enable_if 812< 813 __is_duration<_ToDuration>::value, 814 _ToDuration 815>::type 816duration_cast(const duration<_Rep, _Period>& __fd) 817{ 818 return __duration_cast<duration<_Rep, _Period>, _ToDuration>()(__fd); 819} 820 821template <class _Rep> 822struct _LIBCPP_TEMPLATE_VIS treat_as_floating_point : is_floating_point<_Rep> {}; 823 824#if _LIBCPP_STD_VER > 14 825template <class _Rep> 826inline constexpr bool treat_as_floating_point_v = treat_as_floating_point<_Rep>::value; 827#endif 828 829template <class _Rep> 830struct _LIBCPP_TEMPLATE_VIS duration_values 831{ 832public: 833 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR _Rep zero() _NOEXCEPT {return _Rep(0);} 834 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR _Rep max() _NOEXCEPT {return numeric_limits<_Rep>::max();} 835 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR _Rep min() _NOEXCEPT {return numeric_limits<_Rep>::lowest();} 836}; 837 838#if _LIBCPP_STD_VER > 14 839template <class _ToDuration, class _Rep, class _Period> 840inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 841typename enable_if 842< 843 __is_duration<_ToDuration>::value, 844 _ToDuration 845>::type 846floor(const duration<_Rep, _Period>& __d) 847{ 848 _ToDuration __t = duration_cast<_ToDuration>(__d); 849 if (__t > __d) 850 __t = __t - _ToDuration{1}; 851 return __t; 852} 853 854template <class _ToDuration, class _Rep, class _Period> 855inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 856typename enable_if 857< 858 __is_duration<_ToDuration>::value, 859 _ToDuration 860>::type 861ceil(const duration<_Rep, _Period>& __d) 862{ 863 _ToDuration __t = duration_cast<_ToDuration>(__d); 864 if (__t < __d) 865 __t = __t + _ToDuration{1}; 866 return __t; 867} 868 869template <class _ToDuration, class _Rep, class _Period> 870inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 871typename enable_if 872< 873 __is_duration<_ToDuration>::value, 874 _ToDuration 875>::type 876round(const duration<_Rep, _Period>& __d) 877{ 878 _ToDuration __lower = floor<_ToDuration>(__d); 879 _ToDuration __upper = __lower + _ToDuration{1}; 880 auto __lowerDiff = __d - __lower; 881 auto __upperDiff = __upper - __d; 882 if (__lowerDiff < __upperDiff) 883 return __lower; 884 if (__lowerDiff > __upperDiff) 885 return __upper; 886 return __lower.count() & 1 ? __upper : __lower; 887} 888#endif 889 890// duration 891 892template <class _Rep, class _Period> 893class _LIBCPP_TEMPLATE_VIS duration 894{ 895 static_assert(!__is_duration<_Rep>::value, "A duration representation can not be a duration"); 896 static_assert(__is_ratio<_Period>::value, "Second template parameter of duration must be a std::ratio"); 897 static_assert(_Period::num > 0, "duration period must be positive"); 898 899 template <class _R1, class _R2> 900 struct __no_overflow 901 { 902 private: 903 static const intmax_t __gcd_n1_n2 = __static_gcd<_R1::num, _R2::num>::value; 904 static const intmax_t __gcd_d1_d2 = __static_gcd<_R1::den, _R2::den>::value; 905 static const intmax_t __n1 = _R1::num / __gcd_n1_n2; 906 static const intmax_t __d1 = _R1::den / __gcd_d1_d2; 907 static const intmax_t __n2 = _R2::num / __gcd_n1_n2; 908 static const intmax_t __d2 = _R2::den / __gcd_d1_d2; 909 static const intmax_t max = -((intmax_t(1) << (sizeof(intmax_t) * CHAR_BIT - 1)) + 1); 910 911 template <intmax_t _Xp, intmax_t _Yp, bool __overflow> 912 struct __mul // __overflow == false 913 { 914 static const intmax_t value = _Xp * _Yp; 915 }; 916 917 template <intmax_t _Xp, intmax_t _Yp> 918 struct __mul<_Xp, _Yp, true> 919 { 920 static const intmax_t value = 1; 921 }; 922 923 public: 924 static const bool value = (__n1 <= max / __d2) && (__n2 <= max / __d1); 925 typedef ratio<__mul<__n1, __d2, !value>::value, 926 __mul<__n2, __d1, !value>::value> type; 927 }; 928 929public: 930 typedef _Rep rep; 931 typedef typename _Period::type period; 932private: 933 rep __rep_; 934public: 935 936 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 937#ifndef _LIBCPP_CXX03_LANG 938 duration() = default; 939#else 940 duration() {} 941#endif 942 943 template <class _Rep2> 944 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 945 explicit duration(const _Rep2& __r, 946 typename enable_if 947 < 948 is_convertible<_Rep2, rep>::value && 949 (treat_as_floating_point<rep>::value || 950 !treat_as_floating_point<_Rep2>::value) 951 >::type* = nullptr) 952 : __rep_(__r) {} 953 954 // conversions 955 template <class _Rep2, class _Period2> 956 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 957 duration(const duration<_Rep2, _Period2>& __d, 958 typename enable_if 959 < 960 __no_overflow<_Period2, period>::value && ( 961 treat_as_floating_point<rep>::value || 962 (__no_overflow<_Period2, period>::type::den == 1 && 963 !treat_as_floating_point<_Rep2>::value)) 964 >::type* = nullptr) 965 : __rep_(chrono::duration_cast<duration>(__d).count()) {} 966 967 // observer 968 969 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR rep count() const {return __rep_;} 970 971 // arithmetic 972 973 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR typename common_type<duration>::type operator+() const {return typename common_type<duration>::type(*this);} 974 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR typename common_type<duration>::type operator-() const {return typename common_type<duration>::type(-__rep_);} 975 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator++() {++__rep_; return *this;} 976 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration operator++(int) {return duration(__rep_++);} 977 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator--() {--__rep_; return *this;} 978 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration operator--(int) {return duration(__rep_--);} 979 980 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator+=(const duration& __d) {__rep_ += __d.count(); return *this;} 981 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator-=(const duration& __d) {__rep_ -= __d.count(); return *this;} 982 983 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator*=(const rep& rhs) {__rep_ *= rhs; return *this;} 984 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator/=(const rep& rhs) {__rep_ /= rhs; return *this;} 985 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator%=(const rep& rhs) {__rep_ %= rhs; return *this;} 986 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator%=(const duration& rhs) {__rep_ %= rhs.count(); return *this;} 987 988 // special values 989 990 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR duration zero() _NOEXCEPT {return duration(duration_values<rep>::zero());} 991 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR duration min() _NOEXCEPT {return duration(duration_values<rep>::min());} 992 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR duration max() _NOEXCEPT {return duration(duration_values<rep>::max());} 993}; 994 995typedef duration<long long, nano> nanoseconds; 996typedef duration<long long, micro> microseconds; 997typedef duration<long long, milli> milliseconds; 998typedef duration<long long > seconds; 999typedef duration< long, ratio< 60> > minutes; 1000typedef duration< long, ratio<3600> > hours; 1001#if _LIBCPP_STD_VER > 17 1002typedef duration< int, ratio_multiply<ratio<24>, hours::period>> days; 1003typedef duration< int, ratio_multiply<ratio<7>, days::period>> weeks; 1004typedef duration< int, ratio_multiply<ratio<146097, 400>, days::period>> years; 1005typedef duration< int, ratio_divide<years::period, ratio<12>>> months; 1006#endif 1007// Duration == 1008 1009template <class _LhsDuration, class _RhsDuration> 1010struct __duration_eq 1011{ 1012 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 1013 bool operator()(const _LhsDuration& __lhs, const _RhsDuration& __rhs) const 1014 { 1015 typedef typename common_type<_LhsDuration, _RhsDuration>::type _Ct; 1016 return _Ct(__lhs).count() == _Ct(__rhs).count(); 1017 } 1018}; 1019 1020template <class _LhsDuration> 1021struct __duration_eq<_LhsDuration, _LhsDuration> 1022{ 1023 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 1024 bool operator()(const _LhsDuration& __lhs, const _LhsDuration& __rhs) const 1025 {return __lhs.count() == __rhs.count();} 1026}; 1027 1028template <class _Rep1, class _Period1, class _Rep2, class _Period2> 1029inline _LIBCPP_INLINE_VISIBILITY 1030_LIBCPP_CONSTEXPR 1031bool 1032operator==(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 1033{ 1034 return __duration_eq<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >()(__lhs, __rhs); 1035} 1036 1037// Duration != 1038 1039template <class _Rep1, class _Period1, class _Rep2, class _Period2> 1040inline _LIBCPP_INLINE_VISIBILITY 1041_LIBCPP_CONSTEXPR 1042bool 1043operator!=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 1044{ 1045 return !(__lhs == __rhs); 1046} 1047 1048// Duration < 1049 1050template <class _LhsDuration, class _RhsDuration> 1051struct __duration_lt 1052{ 1053 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 1054 bool operator()(const _LhsDuration& __lhs, const _RhsDuration& __rhs) const 1055 { 1056 typedef typename common_type<_LhsDuration, _RhsDuration>::type _Ct; 1057 return _Ct(__lhs).count() < _Ct(__rhs).count(); 1058 } 1059}; 1060 1061template <class _LhsDuration> 1062struct __duration_lt<_LhsDuration, _LhsDuration> 1063{ 1064 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 1065 bool operator()(const _LhsDuration& __lhs, const _LhsDuration& __rhs) const 1066 {return __lhs.count() < __rhs.count();} 1067}; 1068 1069template <class _Rep1, class _Period1, class _Rep2, class _Period2> 1070inline _LIBCPP_INLINE_VISIBILITY 1071_LIBCPP_CONSTEXPR 1072bool 1073operator< (const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 1074{ 1075 return __duration_lt<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >()(__lhs, __rhs); 1076} 1077 1078// Duration > 1079 1080template <class _Rep1, class _Period1, class _Rep2, class _Period2> 1081inline _LIBCPP_INLINE_VISIBILITY 1082_LIBCPP_CONSTEXPR 1083bool 1084operator> (const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 1085{ 1086 return __rhs < __lhs; 1087} 1088 1089// Duration <= 1090 1091template <class _Rep1, class _Period1, class _Rep2, class _Period2> 1092inline _LIBCPP_INLINE_VISIBILITY 1093_LIBCPP_CONSTEXPR 1094bool 1095operator<=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 1096{ 1097 return !(__rhs < __lhs); 1098} 1099 1100// Duration >= 1101 1102template <class _Rep1, class _Period1, class _Rep2, class _Period2> 1103inline _LIBCPP_INLINE_VISIBILITY 1104_LIBCPP_CONSTEXPR 1105bool 1106operator>=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 1107{ 1108 return !(__lhs < __rhs); 1109} 1110 1111// Duration + 1112 1113template <class _Rep1, class _Period1, class _Rep2, class _Period2> 1114inline _LIBCPP_INLINE_VISIBILITY 1115_LIBCPP_CONSTEXPR 1116typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type 1117operator+(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 1118{ 1119 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Cd; 1120 return _Cd(_Cd(__lhs).count() + _Cd(__rhs).count()); 1121} 1122 1123// Duration - 1124 1125template <class _Rep1, class _Period1, class _Rep2, class _Period2> 1126inline _LIBCPP_INLINE_VISIBILITY 1127_LIBCPP_CONSTEXPR 1128typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type 1129operator-(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 1130{ 1131 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Cd; 1132 return _Cd(_Cd(__lhs).count() - _Cd(__rhs).count()); 1133} 1134 1135// Duration * 1136 1137template <class _Rep1, class _Period, class _Rep2> 1138inline _LIBCPP_INLINE_VISIBILITY 1139_LIBCPP_CONSTEXPR 1140typename enable_if 1141< 1142 is_convertible<_Rep2, typename common_type<_Rep1, _Rep2>::type>::value, 1143 duration<typename common_type<_Rep1, _Rep2>::type, _Period> 1144>::type 1145operator*(const duration<_Rep1, _Period>& __d, const _Rep2& __s) 1146{ 1147 typedef typename common_type<_Rep1, _Rep2>::type _Cr; 1148 typedef duration<_Cr, _Period> _Cd; 1149 return _Cd(_Cd(__d).count() * static_cast<_Cr>(__s)); 1150} 1151 1152template <class _Rep1, class _Period, class _Rep2> 1153inline _LIBCPP_INLINE_VISIBILITY 1154_LIBCPP_CONSTEXPR 1155typename enable_if 1156< 1157 is_convertible<_Rep1, typename common_type<_Rep1, _Rep2>::type>::value, 1158 duration<typename common_type<_Rep1, _Rep2>::type, _Period> 1159>::type 1160operator*(const _Rep1& __s, const duration<_Rep2, _Period>& __d) 1161{ 1162 return __d * __s; 1163} 1164 1165// Duration / 1166 1167template <class _Rep1, class _Period, class _Rep2> 1168inline _LIBCPP_INLINE_VISIBILITY 1169_LIBCPP_CONSTEXPR 1170typename enable_if 1171< 1172 !__is_duration<_Rep2>::value && 1173 is_convertible<_Rep2, typename common_type<_Rep1, _Rep2>::type>::value, 1174 duration<typename common_type<_Rep1, _Rep2>::type, _Period> 1175>::type 1176operator/(const duration<_Rep1, _Period>& __d, const _Rep2& __s) 1177{ 1178 typedef typename common_type<_Rep1, _Rep2>::type _Cr; 1179 typedef duration<_Cr, _Period> _Cd; 1180 return _Cd(_Cd(__d).count() / static_cast<_Cr>(__s)); 1181} 1182 1183template <class _Rep1, class _Period1, class _Rep2, class _Period2> 1184inline _LIBCPP_INLINE_VISIBILITY 1185_LIBCPP_CONSTEXPR 1186typename common_type<_Rep1, _Rep2>::type 1187operator/(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 1188{ 1189 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Ct; 1190 return _Ct(__lhs).count() / _Ct(__rhs).count(); 1191} 1192 1193// Duration % 1194 1195template <class _Rep1, class _Period, class _Rep2> 1196inline _LIBCPP_INLINE_VISIBILITY 1197_LIBCPP_CONSTEXPR 1198typename enable_if 1199< 1200 !__is_duration<_Rep2>::value && 1201 is_convertible<_Rep2, typename common_type<_Rep1, _Rep2>::type>::value, 1202 duration<typename common_type<_Rep1, _Rep2>::type, _Period> 1203>::type 1204operator%(const duration<_Rep1, _Period>& __d, const _Rep2& __s) 1205{ 1206 typedef typename common_type<_Rep1, _Rep2>::type _Cr; 1207 typedef duration<_Cr, _Period> _Cd; 1208 return _Cd(_Cd(__d).count() % static_cast<_Cr>(__s)); 1209} 1210 1211template <class _Rep1, class _Period1, class _Rep2, class _Period2> 1212inline _LIBCPP_INLINE_VISIBILITY 1213_LIBCPP_CONSTEXPR 1214typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type 1215operator%(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 1216{ 1217 typedef typename common_type<_Rep1, _Rep2>::type _Cr; 1218 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Cd; 1219 return _Cd(static_cast<_Cr>(_Cd(__lhs).count()) % static_cast<_Cr>(_Cd(__rhs).count())); 1220} 1221 1222////////////////////////////////////////////////////////// 1223///////////////////// time_point ///////////////////////// 1224////////////////////////////////////////////////////////// 1225 1226template <class _Clock, class _Duration = typename _Clock::duration> 1227class _LIBCPP_TEMPLATE_VIS time_point 1228{ 1229 static_assert(__is_duration<_Duration>::value, 1230 "Second template parameter of time_point must be a std::chrono::duration"); 1231public: 1232 typedef _Clock clock; 1233 typedef _Duration duration; 1234 typedef typename duration::rep rep; 1235 typedef typename duration::period period; 1236private: 1237 duration __d_; 1238 1239public: 1240 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 time_point() : __d_(duration::zero()) {} 1241 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 explicit time_point(const duration& __d) : __d_(__d) {} 1242 1243 // conversions 1244 template <class _Duration2> 1245 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1246 time_point(const time_point<clock, _Duration2>& t, 1247 typename enable_if 1248 < 1249 is_convertible<_Duration2, duration>::value 1250 >::type* = nullptr) 1251 : __d_(t.time_since_epoch()) {} 1252 1253 // observer 1254 1255 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 duration time_since_epoch() const {return __d_;} 1256 1257 // arithmetic 1258 1259 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 time_point& operator+=(const duration& __d) {__d_ += __d; return *this;} 1260 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 time_point& operator-=(const duration& __d) {__d_ -= __d; return *this;} 1261 1262 // special values 1263 1264 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR time_point min() _NOEXCEPT {return time_point(duration::min());} 1265 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR time_point max() _NOEXCEPT {return time_point(duration::max());} 1266}; 1267 1268} // chrono 1269 1270template <class _Clock, class _Duration1, class _Duration2> 1271struct _LIBCPP_TEMPLATE_VIS common_type<chrono::time_point<_Clock, _Duration1>, 1272 chrono::time_point<_Clock, _Duration2> > 1273{ 1274 typedef chrono::time_point<_Clock, typename common_type<_Duration1, _Duration2>::type> type; 1275}; 1276 1277namespace chrono { 1278 1279template <class _ToDuration, class _Clock, class _Duration> 1280inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1281time_point<_Clock, _ToDuration> 1282time_point_cast(const time_point<_Clock, _Duration>& __t) 1283{ 1284 return time_point<_Clock, _ToDuration>(chrono::duration_cast<_ToDuration>(__t.time_since_epoch())); 1285} 1286 1287#if _LIBCPP_STD_VER > 14 1288template <class _ToDuration, class _Clock, class _Duration> 1289inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 1290typename enable_if 1291< 1292 __is_duration<_ToDuration>::value, 1293 time_point<_Clock, _ToDuration> 1294>::type 1295floor(const time_point<_Clock, _Duration>& __t) 1296{ 1297 return time_point<_Clock, _ToDuration>{floor<_ToDuration>(__t.time_since_epoch())}; 1298} 1299 1300template <class _ToDuration, class _Clock, class _Duration> 1301inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 1302typename enable_if 1303< 1304 __is_duration<_ToDuration>::value, 1305 time_point<_Clock, _ToDuration> 1306>::type 1307ceil(const time_point<_Clock, _Duration>& __t) 1308{ 1309 return time_point<_Clock, _ToDuration>{ceil<_ToDuration>(__t.time_since_epoch())}; 1310} 1311 1312template <class _ToDuration, class _Clock, class _Duration> 1313inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 1314typename enable_if 1315< 1316 __is_duration<_ToDuration>::value, 1317 time_point<_Clock, _ToDuration> 1318>::type 1319round(const time_point<_Clock, _Duration>& __t) 1320{ 1321 return time_point<_Clock, _ToDuration>{round<_ToDuration>(__t.time_since_epoch())}; 1322} 1323 1324template <class _Rep, class _Period> 1325inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 1326typename enable_if 1327< 1328 numeric_limits<_Rep>::is_signed, 1329 duration<_Rep, _Period> 1330>::type 1331abs(duration<_Rep, _Period> __d) 1332{ 1333 return __d >= __d.zero() ? +__d : -__d; 1334} 1335#endif 1336 1337// time_point == 1338 1339template <class _Clock, class _Duration1, class _Duration2> 1340inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1341bool 1342operator==(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) 1343{ 1344 return __lhs.time_since_epoch() == __rhs.time_since_epoch(); 1345} 1346 1347// time_point != 1348 1349template <class _Clock, class _Duration1, class _Duration2> 1350inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1351bool 1352operator!=(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) 1353{ 1354 return !(__lhs == __rhs); 1355} 1356 1357// time_point < 1358 1359template <class _Clock, class _Duration1, class _Duration2> 1360inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1361bool 1362operator<(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) 1363{ 1364 return __lhs.time_since_epoch() < __rhs.time_since_epoch(); 1365} 1366 1367// time_point > 1368 1369template <class _Clock, class _Duration1, class _Duration2> 1370inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1371bool 1372operator>(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) 1373{ 1374 return __rhs < __lhs; 1375} 1376 1377// time_point <= 1378 1379template <class _Clock, class _Duration1, class _Duration2> 1380inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1381bool 1382operator<=(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) 1383{ 1384 return !(__rhs < __lhs); 1385} 1386 1387// time_point >= 1388 1389template <class _Clock, class _Duration1, class _Duration2> 1390inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1391bool 1392operator>=(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) 1393{ 1394 return !(__lhs < __rhs); 1395} 1396 1397// time_point operator+(time_point x, duration y); 1398 1399template <class _Clock, class _Duration1, class _Rep2, class _Period2> 1400inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1401time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type> 1402operator+(const time_point<_Clock, _Duration1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 1403{ 1404 typedef time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type> _Tr; 1405 return _Tr (__lhs.time_since_epoch() + __rhs); 1406} 1407 1408// time_point operator+(duration x, time_point y); 1409 1410template <class _Rep1, class _Period1, class _Clock, class _Duration2> 1411inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1412time_point<_Clock, typename common_type<duration<_Rep1, _Period1>, _Duration2>::type> 1413operator+(const duration<_Rep1, _Period1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) 1414{ 1415 return __rhs + __lhs; 1416} 1417 1418// time_point operator-(time_point x, duration y); 1419 1420template <class _Clock, class _Duration1, class _Rep2, class _Period2> 1421inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1422time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type> 1423operator-(const time_point<_Clock, _Duration1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 1424{ 1425 typedef time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type> _Ret; 1426 return _Ret(__lhs.time_since_epoch() -__rhs); 1427} 1428 1429// duration operator-(time_point x, time_point y); 1430 1431template <class _Clock, class _Duration1, class _Duration2> 1432inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1433typename common_type<_Duration1, _Duration2>::type 1434operator-(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) 1435{ 1436 return __lhs.time_since_epoch() - __rhs.time_since_epoch(); 1437} 1438 1439////////////////////////////////////////////////////////// 1440/////////////////////// clocks /////////////////////////// 1441////////////////////////////////////////////////////////// 1442 1443class _LIBCPP_TYPE_VIS system_clock 1444{ 1445public: 1446 typedef microseconds duration; 1447 typedef duration::rep rep; 1448 typedef duration::period period; 1449 typedef chrono::time_point<system_clock> time_point; 1450 static _LIBCPP_CONSTEXPR_AFTER_CXX11 const bool is_steady = false; 1451 1452 static time_point now() _NOEXCEPT; 1453 static time_t to_time_t (const time_point& __t) _NOEXCEPT; 1454 static time_point from_time_t(time_t __t) _NOEXCEPT; 1455}; 1456 1457#ifndef _LIBCPP_HAS_NO_MONOTONIC_CLOCK 1458class _LIBCPP_TYPE_VIS steady_clock 1459{ 1460public: 1461 typedef nanoseconds duration; 1462 typedef duration::rep rep; 1463 typedef duration::period period; 1464 typedef chrono::time_point<steady_clock, duration> time_point; 1465 static _LIBCPP_CONSTEXPR_AFTER_CXX11 const bool is_steady = true; 1466 1467 static time_point now() _NOEXCEPT; 1468}; 1469 1470typedef steady_clock high_resolution_clock; 1471#else 1472typedef system_clock high_resolution_clock; 1473#endif 1474 1475#if _LIBCPP_STD_VER > 17 1476// [time.clock.file], type file_clock 1477using file_clock = _VSTD_FS::_FilesystemClock; 1478 1479template<class _Duration> 1480using file_time = time_point<file_clock, _Duration>; 1481 1482 1483template <class _Duration> 1484using sys_time = time_point<system_clock, _Duration>; 1485using sys_seconds = sys_time<seconds>; 1486using sys_days = sys_time<days>; 1487 1488struct local_t {}; 1489template<class Duration> 1490using local_time = time_point<local_t, Duration>; 1491using local_seconds = local_time<seconds>; 1492using local_days = local_time<days>; 1493 1494 1495struct last_spec { explicit last_spec() = default; }; 1496 1497class day { 1498private: 1499 unsigned char __d; 1500public: 1501 day() = default; 1502 explicit inline constexpr day(unsigned __val) noexcept : __d(static_cast<unsigned char>(__val)) {} 1503 inline constexpr day& operator++() noexcept { ++__d; return *this; } 1504 inline constexpr day operator++(int) noexcept { day __tmp = *this; ++(*this); return __tmp; } 1505 inline constexpr day& operator--() noexcept { --__d; return *this; } 1506 inline constexpr day operator--(int) noexcept { day __tmp = *this; --(*this); return __tmp; } 1507 constexpr day& operator+=(const days& __dd) noexcept; 1508 constexpr day& operator-=(const days& __dd) noexcept; 1509 explicit inline constexpr operator unsigned() const noexcept { return __d; } 1510 inline constexpr bool ok() const noexcept { return __d >= 1 && __d <= 31; } 1511 }; 1512 1513 1514inline constexpr 1515bool operator==(const day& __lhs, const day& __rhs) noexcept 1516{ return static_cast<unsigned>(__lhs) == static_cast<unsigned>(__rhs); } 1517 1518inline constexpr 1519bool operator!=(const day& __lhs, const day& __rhs) noexcept 1520{ return !(__lhs == __rhs); } 1521 1522inline constexpr 1523bool operator< (const day& __lhs, const day& __rhs) noexcept 1524{ return static_cast<unsigned>(__lhs) < static_cast<unsigned>(__rhs); } 1525 1526inline constexpr 1527bool operator> (const day& __lhs, const day& __rhs) noexcept 1528{ return __rhs < __lhs; } 1529 1530inline constexpr 1531bool operator<=(const day& __lhs, const day& __rhs) noexcept 1532{ return !(__rhs < __lhs);} 1533 1534inline constexpr 1535bool operator>=(const day& __lhs, const day& __rhs) noexcept 1536{ return !(__lhs < __rhs); } 1537 1538inline constexpr 1539day operator+ (const day& __lhs, const days& __rhs) noexcept 1540{ return day(static_cast<unsigned>(__lhs) + __rhs.count()); } 1541 1542inline constexpr 1543day operator+ (const days& __lhs, const day& __rhs) noexcept 1544{ return __rhs + __lhs; } 1545 1546inline constexpr 1547day operator- (const day& __lhs, const days& __rhs) noexcept 1548{ return __lhs + -__rhs; } 1549 1550inline constexpr 1551days operator-(const day& __lhs, const day& __rhs) noexcept 1552{ return days(static_cast<int>(static_cast<unsigned>(__lhs)) - 1553 static_cast<int>(static_cast<unsigned>(__rhs))); } 1554 1555inline constexpr day& day::operator+=(const days& __dd) noexcept 1556{ *this = *this + __dd; return *this; } 1557 1558inline constexpr day& day::operator-=(const days& __dd) noexcept 1559{ *this = *this - __dd; return *this; } 1560 1561 1562class month { 1563private: 1564 unsigned char __m; 1565public: 1566 month() = default; 1567 explicit inline constexpr month(unsigned __val) noexcept : __m(static_cast<unsigned char>(__val)) {} 1568 inline constexpr month& operator++() noexcept { ++__m; return *this; } 1569 inline constexpr month operator++(int) noexcept { month __tmp = *this; ++(*this); return __tmp; } 1570 inline constexpr month& operator--() noexcept { --__m; return *this; } 1571 inline constexpr month operator--(int) noexcept { month __tmp = *this; --(*this); return __tmp; } 1572 constexpr month& operator+=(const months& __m1) noexcept; 1573 constexpr month& operator-=(const months& __m1) noexcept; 1574 explicit inline constexpr operator unsigned() const noexcept { return __m; } 1575 inline constexpr bool ok() const noexcept { return __m >= 1 && __m <= 12; } 1576}; 1577 1578 1579inline constexpr 1580bool operator==(const month& __lhs, const month& __rhs) noexcept 1581{ return static_cast<unsigned>(__lhs) == static_cast<unsigned>(__rhs); } 1582 1583inline constexpr 1584bool operator!=(const month& __lhs, const month& __rhs) noexcept 1585{ return !(__lhs == __rhs); } 1586 1587inline constexpr 1588bool operator< (const month& __lhs, const month& __rhs) noexcept 1589{ return static_cast<unsigned>(__lhs) < static_cast<unsigned>(__rhs); } 1590 1591inline constexpr 1592bool operator> (const month& __lhs, const month& __rhs) noexcept 1593{ return __rhs < __lhs; } 1594 1595inline constexpr 1596bool operator<=(const month& __lhs, const month& __rhs) noexcept 1597{ return !(__rhs < __lhs); } 1598 1599inline constexpr 1600bool operator>=(const month& __lhs, const month& __rhs) noexcept 1601{ return !(__lhs < __rhs); } 1602 1603inline constexpr 1604month operator+ (const month& __lhs, const months& __rhs) noexcept 1605{ 1606 auto const __mu = static_cast<long long>(static_cast<unsigned>(__lhs)) + (__rhs.count() - 1); 1607 auto const __yr = (__mu >= 0 ? __mu : __mu - 11) / 12; 1608 return month{static_cast<unsigned>(__mu - __yr * 12 + 1)}; 1609} 1610 1611inline constexpr 1612month operator+ (const months& __lhs, const month& __rhs) noexcept 1613{ return __rhs + __lhs; } 1614 1615inline constexpr 1616month operator- (const month& __lhs, const months& __rhs) noexcept 1617{ return __lhs + -__rhs; } 1618 1619inline constexpr 1620months operator-(const month& __lhs, const month& __rhs) noexcept 1621{ 1622 auto const __dm = static_cast<unsigned>(__lhs) - static_cast<unsigned>(__rhs); 1623 return months(__dm <= 11 ? __dm : __dm + 12); 1624} 1625 1626inline constexpr month& month::operator+=(const months& __dm) noexcept 1627{ *this = *this + __dm; return *this; } 1628 1629inline constexpr month& month::operator-=(const months& __dm) noexcept 1630{ *this = *this - __dm; return *this; } 1631 1632 1633class year { 1634private: 1635 short __y; 1636public: 1637 year() = default; 1638 explicit inline constexpr year(int __val) noexcept : __y(static_cast<short>(__val)) {} 1639 1640 inline constexpr year& operator++() noexcept { ++__y; return *this; } 1641 inline constexpr year operator++(int) noexcept { year __tmp = *this; ++(*this); return __tmp; } 1642 inline constexpr year& operator--() noexcept { --__y; return *this; } 1643 inline constexpr year operator--(int) noexcept { year __tmp = *this; --(*this); return __tmp; } 1644 constexpr year& operator+=(const years& __dy) noexcept; 1645 constexpr year& operator-=(const years& __dy) noexcept; 1646 inline constexpr year operator+() const noexcept { return *this; } 1647 inline constexpr year operator-() const noexcept { return year{-__y}; } 1648 1649 inline constexpr bool is_leap() const noexcept { return __y % 4 == 0 && (__y % 100 != 0 || __y % 400 == 0); } 1650 explicit inline constexpr operator int() const noexcept { return __y; } 1651 constexpr bool ok() const noexcept; 1652 static inline constexpr year min() noexcept { return year{-32767}; } 1653 static inline constexpr year max() noexcept { return year{ 32767}; } 1654}; 1655 1656 1657inline constexpr 1658bool operator==(const year& __lhs, const year& __rhs) noexcept 1659{ return static_cast<int>(__lhs) == static_cast<int>(__rhs); } 1660 1661inline constexpr 1662bool operator!=(const year& __lhs, const year& __rhs) noexcept 1663{ return !(__lhs == __rhs); } 1664 1665inline constexpr 1666bool operator< (const year& __lhs, const year& __rhs) noexcept 1667{ return static_cast<int>(__lhs) < static_cast<int>(__rhs); } 1668 1669inline constexpr 1670bool operator> (const year& __lhs, const year& __rhs) noexcept 1671{ return __rhs < __lhs; } 1672 1673inline constexpr 1674bool operator<=(const year& __lhs, const year& __rhs) noexcept 1675{ return !(__rhs < __lhs); } 1676 1677inline constexpr 1678bool operator>=(const year& __lhs, const year& __rhs) noexcept 1679{ return !(__lhs < __rhs); } 1680 1681inline constexpr 1682year operator+ (const year& __lhs, const years& __rhs) noexcept 1683{ return year(static_cast<int>(__lhs) + __rhs.count()); } 1684 1685inline constexpr 1686year operator+ (const years& __lhs, const year& __rhs) noexcept 1687{ return __rhs + __lhs; } 1688 1689inline constexpr 1690year operator- (const year& __lhs, const years& __rhs) noexcept 1691{ return __lhs + -__rhs; } 1692 1693inline constexpr 1694years operator-(const year& __lhs, const year& __rhs) noexcept 1695{ return years{static_cast<int>(__lhs) - static_cast<int>(__rhs)}; } 1696 1697 1698inline constexpr year& year::operator+=(const years& __dy) noexcept 1699{ *this = *this + __dy; return *this; } 1700 1701inline constexpr year& year::operator-=(const years& __dy) noexcept 1702{ *this = *this - __dy; return *this; } 1703 1704inline constexpr bool year::ok() const noexcept 1705{ return static_cast<int>(min()) <= __y && __y <= static_cast<int>(max()); } 1706 1707class weekday_indexed; 1708class weekday_last; 1709 1710class weekday { 1711private: 1712 unsigned char __wd; 1713 static constexpr unsigned char __weekday_from_days(int __days) noexcept; 1714public: 1715 weekday() = default; 1716 inline explicit constexpr weekday(unsigned __val) noexcept : __wd(static_cast<unsigned char>(__val == 7 ? 0 : __val)) {} 1717 inline constexpr weekday(const sys_days& __sysd) noexcept 1718 : __wd(__weekday_from_days(__sysd.time_since_epoch().count())) {} 1719 inline explicit constexpr weekday(const local_days& __locd) noexcept 1720 : __wd(__weekday_from_days(__locd.time_since_epoch().count())) {} 1721 1722 inline constexpr weekday& operator++() noexcept { __wd = (__wd == 6 ? 0 : __wd + 1); return *this; } 1723 inline constexpr weekday operator++(int) noexcept { weekday __tmp = *this; ++(*this); return __tmp; } 1724 inline constexpr weekday& operator--() noexcept { __wd = (__wd == 0 ? 6 : __wd - 1); return *this; } 1725 inline constexpr weekday operator--(int) noexcept { weekday __tmp = *this; --(*this); return __tmp; } 1726 constexpr weekday& operator+=(const days& __dd) noexcept; 1727 constexpr weekday& operator-=(const days& __dd) noexcept; 1728 inline constexpr unsigned c_encoding() const noexcept { return __wd; } 1729 inline constexpr unsigned iso_encoding() const noexcept { return __wd == 0u ? 7 : __wd; } 1730 inline constexpr bool ok() const noexcept { return __wd <= 6; } 1731 constexpr weekday_indexed operator[](unsigned __index) const noexcept; 1732 constexpr weekday_last operator[](last_spec) const noexcept; 1733}; 1734 1735 1736// https://howardhinnant.github.io/date_algorithms.html#weekday_from_days 1737inline constexpr 1738unsigned char weekday::__weekday_from_days(int __days) noexcept 1739{ 1740 return static_cast<unsigned char>( 1741 static_cast<unsigned>(__days >= -4 ? (__days+4) % 7 : (__days+5) % 7 + 6) 1742 ); 1743} 1744 1745inline constexpr 1746bool operator==(const weekday& __lhs, const weekday& __rhs) noexcept 1747{ return __lhs.c_encoding() == __rhs.c_encoding(); } 1748 1749inline constexpr 1750bool operator!=(const weekday& __lhs, const weekday& __rhs) noexcept 1751{ return !(__lhs == __rhs); } 1752 1753inline constexpr 1754bool operator< (const weekday& __lhs, const weekday& __rhs) noexcept 1755{ return __lhs.c_encoding() < __rhs.c_encoding(); } 1756 1757inline constexpr 1758bool operator> (const weekday& __lhs, const weekday& __rhs) noexcept 1759{ return __rhs < __lhs; } 1760 1761inline constexpr 1762bool operator<=(const weekday& __lhs, const weekday& __rhs) noexcept 1763{ return !(__rhs < __lhs);} 1764 1765inline constexpr 1766bool operator>=(const weekday& __lhs, const weekday& __rhs) noexcept 1767{ return !(__lhs < __rhs); } 1768 1769constexpr weekday operator+(const weekday& __lhs, const days& __rhs) noexcept 1770{ 1771 auto const __mu = static_cast<long long>(__lhs.c_encoding()) + __rhs.count(); 1772 auto const __yr = (__mu >= 0 ? __mu : __mu - 6) / 7; 1773 return weekday{static_cast<unsigned>(__mu - __yr * 7)}; 1774} 1775 1776constexpr weekday operator+(const days& __lhs, const weekday& __rhs) noexcept 1777{ return __rhs + __lhs; } 1778 1779constexpr weekday operator-(const weekday& __lhs, const days& __rhs) noexcept 1780{ return __lhs + -__rhs; } 1781 1782constexpr days operator-(const weekday& __lhs, const weekday& __rhs) noexcept 1783{ 1784 const int __wdu = __lhs.c_encoding() - __rhs.c_encoding(); 1785 const int __wk = (__wdu >= 0 ? __wdu : __wdu-6) / 7; 1786 return days{__wdu - __wk * 7}; 1787} 1788 1789inline constexpr weekday& weekday::operator+=(const days& __dd) noexcept 1790{ *this = *this + __dd; return *this; } 1791 1792inline constexpr weekday& weekday::operator-=(const days& __dd) noexcept 1793{ *this = *this - __dd; return *this; } 1794 1795 1796class weekday_indexed { 1797private: 1798 chrono::weekday __wd; 1799 unsigned char __idx; 1800public: 1801 weekday_indexed() = default; 1802 inline constexpr weekday_indexed(const chrono::weekday& __wdval, unsigned __idxval) noexcept 1803 : __wd{__wdval}, __idx(__idxval) {} 1804 inline constexpr chrono::weekday weekday() const noexcept { return __wd; } 1805 inline constexpr unsigned index() const noexcept { return __idx; } 1806 inline constexpr bool ok() const noexcept { return __wd.ok() && __idx >= 1 && __idx <= 5; } 1807}; 1808 1809inline constexpr 1810bool operator==(const weekday_indexed& __lhs, const weekday_indexed& __rhs) noexcept 1811{ return __lhs.weekday() == __rhs.weekday() && __lhs.index() == __rhs.index(); } 1812 1813inline constexpr 1814bool operator!=(const weekday_indexed& __lhs, const weekday_indexed& __rhs) noexcept 1815{ return !(__lhs == __rhs); } 1816 1817 1818class weekday_last { 1819private: 1820 chrono::weekday __wd; 1821public: 1822 explicit constexpr weekday_last(const chrono::weekday& __val) noexcept 1823 : __wd{__val} {} 1824 constexpr chrono::weekday weekday() const noexcept { return __wd; } 1825 constexpr bool ok() const noexcept { return __wd.ok(); } 1826}; 1827 1828inline constexpr 1829bool operator==(const weekday_last& __lhs, const weekday_last& __rhs) noexcept 1830{ return __lhs.weekday() == __rhs.weekday(); } 1831 1832inline constexpr 1833bool operator!=(const weekday_last& __lhs, const weekday_last& __rhs) noexcept 1834{ return !(__lhs == __rhs); } 1835 1836inline constexpr 1837weekday_indexed weekday::operator[](unsigned __index) const noexcept { return weekday_indexed{*this, __index}; } 1838 1839inline constexpr 1840weekday_last weekday::operator[](last_spec) const noexcept { return weekday_last{*this}; } 1841 1842 1843inline constexpr last_spec last{}; 1844inline constexpr weekday Sunday{0}; 1845inline constexpr weekday Monday{1}; 1846inline constexpr weekday Tuesday{2}; 1847inline constexpr weekday Wednesday{3}; 1848inline constexpr weekday Thursday{4}; 1849inline constexpr weekday Friday{5}; 1850inline constexpr weekday Saturday{6}; 1851 1852inline constexpr month January{1}; 1853inline constexpr month February{2}; 1854inline constexpr month March{3}; 1855inline constexpr month April{4}; 1856inline constexpr month May{5}; 1857inline constexpr month June{6}; 1858inline constexpr month July{7}; 1859inline constexpr month August{8}; 1860inline constexpr month September{9}; 1861inline constexpr month October{10}; 1862inline constexpr month November{11}; 1863inline constexpr month December{12}; 1864 1865 1866class month_day { 1867private: 1868 chrono::month __m; 1869 chrono::day __d; 1870public: 1871 month_day() = default; 1872 constexpr month_day(const chrono::month& __mval, const chrono::day& __dval) noexcept 1873 : __m{__mval}, __d{__dval} {} 1874 inline constexpr chrono::month month() const noexcept { return __m; } 1875 inline constexpr chrono::day day() const noexcept { return __d; } 1876 constexpr bool ok() const noexcept; 1877}; 1878 1879inline constexpr 1880bool month_day::ok() const noexcept 1881{ 1882 if (!__m.ok()) return false; 1883 const unsigned __dval = static_cast<unsigned>(__d); 1884 if (__dval < 1 || __dval > 31) return false; 1885 if (__dval <= 29) return true; 1886// Now we've got either 30 or 31 1887 const unsigned __mval = static_cast<unsigned>(__m); 1888 if (__mval == 2) return false; 1889 if (__mval == 4 || __mval == 6 || __mval == 9 || __mval == 11) 1890 return __dval == 30; 1891 return true; 1892} 1893 1894inline constexpr 1895bool operator==(const month_day& __lhs, const month_day& __rhs) noexcept 1896{ return __lhs.month() == __rhs.month() && __lhs.day() == __rhs.day(); } 1897 1898inline constexpr 1899bool operator!=(const month_day& __lhs, const month_day& __rhs) noexcept 1900{ return !(__lhs == __rhs); } 1901 1902inline constexpr 1903month_day operator/(const month& __lhs, const day& __rhs) noexcept 1904{ return month_day{__lhs, __rhs}; } 1905 1906constexpr 1907month_day operator/(const day& __lhs, const month& __rhs) noexcept 1908{ return __rhs / __lhs; } 1909 1910inline constexpr 1911month_day operator/(const month& __lhs, int __rhs) noexcept 1912{ return __lhs / day(__rhs); } 1913 1914constexpr 1915month_day operator/(int __lhs, const day& __rhs) noexcept 1916{ return month(__lhs) / __rhs; } 1917 1918constexpr 1919month_day operator/(const day& __lhs, int __rhs) noexcept 1920{ return month(__rhs) / __lhs; } 1921 1922 1923inline constexpr 1924bool operator< (const month_day& __lhs, const month_day& __rhs) noexcept 1925{ return __lhs.month() != __rhs.month() ? __lhs.month() < __rhs.month() : __lhs.day() < __rhs.day(); } 1926 1927inline constexpr 1928bool operator> (const month_day& __lhs, const month_day& __rhs) noexcept 1929{ return __rhs < __lhs; } 1930 1931inline constexpr 1932bool operator<=(const month_day& __lhs, const month_day& __rhs) noexcept 1933{ return !(__rhs < __lhs);} 1934 1935inline constexpr 1936bool operator>=(const month_day& __lhs, const month_day& __rhs) noexcept 1937{ return !(__lhs < __rhs); } 1938 1939 1940 1941class month_day_last { 1942private: 1943 chrono::month __m; 1944public: 1945 explicit constexpr month_day_last(const chrono::month& __val) noexcept 1946 : __m{__val} {} 1947 inline constexpr chrono::month month() const noexcept { return __m; } 1948 inline constexpr bool ok() const noexcept { return __m.ok(); } 1949}; 1950 1951inline constexpr 1952bool operator==(const month_day_last& __lhs, const month_day_last& __rhs) noexcept 1953{ return __lhs.month() == __rhs.month(); } 1954 1955inline constexpr 1956bool operator!=(const month_day_last& __lhs, const month_day_last& __rhs) noexcept 1957{ return !(__lhs == __rhs); } 1958 1959inline constexpr 1960bool operator< (const month_day_last& __lhs, const month_day_last& __rhs) noexcept 1961{ return __lhs.month() < __rhs.month(); } 1962 1963inline constexpr 1964bool operator> (const month_day_last& __lhs, const month_day_last& __rhs) noexcept 1965{ return __rhs < __lhs; } 1966 1967inline constexpr 1968bool operator<=(const month_day_last& __lhs, const month_day_last& __rhs) noexcept 1969{ return !(__rhs < __lhs);} 1970 1971inline constexpr 1972bool operator>=(const month_day_last& __lhs, const month_day_last& __rhs) noexcept 1973{ return !(__lhs < __rhs); } 1974 1975inline constexpr 1976month_day_last operator/(const month& __lhs, last_spec) noexcept 1977{ return month_day_last{__lhs}; } 1978 1979inline constexpr 1980month_day_last operator/(last_spec, const month& __rhs) noexcept 1981{ return month_day_last{__rhs}; } 1982 1983inline constexpr 1984month_day_last operator/(int __lhs, last_spec) noexcept 1985{ return month_day_last{month(__lhs)}; } 1986 1987inline constexpr 1988month_day_last operator/(last_spec, int __rhs) noexcept 1989{ return month_day_last{month(__rhs)}; } 1990 1991 1992class month_weekday { 1993private: 1994 chrono::month __m; 1995 chrono::weekday_indexed __wdi; 1996public: 1997 month_weekday() = default; 1998 constexpr month_weekday(const chrono::month& __mval, const chrono::weekday_indexed& __wdival) noexcept 1999 : __m{__mval}, __wdi{__wdival} {} 2000 inline constexpr chrono::month month() const noexcept { return __m; } 2001 inline constexpr chrono::weekday_indexed weekday_indexed() const noexcept { return __wdi; } 2002 inline constexpr bool ok() const noexcept { return __m.ok() && __wdi.ok(); } 2003}; 2004 2005inline constexpr 2006bool operator==(const month_weekday& __lhs, const month_weekday& __rhs) noexcept 2007{ return __lhs.month() == __rhs.month() && __lhs.weekday_indexed() == __rhs.weekday_indexed(); } 2008 2009inline constexpr 2010bool operator!=(const month_weekday& __lhs, const month_weekday& __rhs) noexcept 2011{ return !(__lhs == __rhs); } 2012 2013inline constexpr 2014month_weekday operator/(const month& __lhs, const weekday_indexed& __rhs) noexcept 2015{ return month_weekday{__lhs, __rhs}; } 2016 2017inline constexpr 2018month_weekday operator/(int __lhs, const weekday_indexed& __rhs) noexcept 2019{ return month_weekday{month(__lhs), __rhs}; } 2020 2021inline constexpr 2022month_weekday operator/(const weekday_indexed& __lhs, const month& __rhs) noexcept 2023{ return month_weekday{__rhs, __lhs}; } 2024 2025inline constexpr 2026month_weekday operator/(const weekday_indexed& __lhs, int __rhs) noexcept 2027{ return month_weekday{month(__rhs), __lhs}; } 2028 2029 2030class month_weekday_last { 2031 chrono::month __m; 2032 chrono::weekday_last __wdl; 2033 public: 2034 constexpr month_weekday_last(const chrono::month& __mval, const chrono::weekday_last& __wdlval) noexcept 2035 : __m{__mval}, __wdl{__wdlval} {} 2036 inline constexpr chrono::month month() const noexcept { return __m; } 2037 inline constexpr chrono::weekday_last weekday_last() const noexcept { return __wdl; } 2038 inline constexpr bool ok() const noexcept { return __m.ok() && __wdl.ok(); } 2039}; 2040 2041inline constexpr 2042bool operator==(const month_weekday_last& __lhs, const month_weekday_last& __rhs) noexcept 2043{ return __lhs.month() == __rhs.month() && __lhs.weekday_last() == __rhs.weekday_last(); } 2044 2045inline constexpr 2046bool operator!=(const month_weekday_last& __lhs, const month_weekday_last& __rhs) noexcept 2047{ return !(__lhs == __rhs); } 2048 2049 2050inline constexpr 2051month_weekday_last operator/(const month& __lhs, const weekday_last& __rhs) noexcept 2052{ return month_weekday_last{__lhs, __rhs}; } 2053 2054inline constexpr 2055month_weekday_last operator/(int __lhs, const weekday_last& __rhs) noexcept 2056{ return month_weekday_last{month(__lhs), __rhs}; } 2057 2058inline constexpr 2059month_weekday_last operator/(const weekday_last& __lhs, const month& __rhs) noexcept 2060{ return month_weekday_last{__rhs, __lhs}; } 2061 2062inline constexpr 2063month_weekday_last operator/(const weekday_last& __lhs, int __rhs) noexcept 2064{ return month_weekday_last{month(__rhs), __lhs}; } 2065 2066 2067class year_month { 2068 chrono::year __y; 2069 chrono::month __m; 2070public: 2071 year_month() = default; 2072 constexpr year_month(const chrono::year& __yval, const chrono::month& __mval) noexcept 2073 : __y{__yval}, __m{__mval} {} 2074 inline constexpr chrono::year year() const noexcept { return __y; } 2075 inline constexpr chrono::month month() const noexcept { return __m; } 2076 inline constexpr year_month& operator+=(const months& __dm) noexcept { this->__m += __dm; return *this; } 2077 inline constexpr year_month& operator-=(const months& __dm) noexcept { this->__m -= __dm; return *this; } 2078 inline constexpr year_month& operator+=(const years& __dy) noexcept { this->__y += __dy; return *this; } 2079 inline constexpr year_month& operator-=(const years& __dy) noexcept { this->__y -= __dy; return *this; } 2080 inline constexpr bool ok() const noexcept { return __y.ok() && __m.ok(); } 2081}; 2082 2083inline constexpr 2084year_month operator/(const year& __y, const month& __m) noexcept { return year_month{__y, __m}; } 2085 2086inline constexpr 2087year_month operator/(const year& __y, int __m) noexcept { return year_month{__y, month(__m)}; } 2088 2089inline constexpr 2090bool operator==(const year_month& __lhs, const year_month& __rhs) noexcept 2091{ return __lhs.year() == __rhs.year() && __lhs.month() == __rhs.month(); } 2092 2093inline constexpr 2094bool operator!=(const year_month& __lhs, const year_month& __rhs) noexcept 2095{ return !(__lhs == __rhs); } 2096 2097inline constexpr 2098bool operator< (const year_month& __lhs, const year_month& __rhs) noexcept 2099{ return __lhs.year() != __rhs.year() ? __lhs.year() < __rhs.year() : __lhs.month() < __rhs.month(); } 2100 2101inline constexpr 2102bool operator> (const year_month& __lhs, const year_month& __rhs) noexcept 2103{ return __rhs < __lhs; } 2104 2105inline constexpr 2106bool operator<=(const year_month& __lhs, const year_month& __rhs) noexcept 2107{ return !(__rhs < __lhs);} 2108 2109inline constexpr 2110bool operator>=(const year_month& __lhs, const year_month& __rhs) noexcept 2111{ return !(__lhs < __rhs); } 2112 2113constexpr year_month operator+(const year_month& __lhs, const months& __rhs) noexcept 2114{ 2115 int __dmi = static_cast<int>(static_cast<unsigned>(__lhs.month())) - 1 + __rhs.count(); 2116 const int __dy = (__dmi >= 0 ? __dmi : __dmi-11) / 12; 2117 __dmi = __dmi - __dy * 12 + 1; 2118 return (__lhs.year() + years(__dy)) / month(static_cast<unsigned>(__dmi)); 2119} 2120 2121constexpr year_month operator+(const months& __lhs, const year_month& __rhs) noexcept 2122{ return __rhs + __lhs; } 2123 2124constexpr year_month operator+(const year_month& __lhs, const years& __rhs) noexcept 2125{ return (__lhs.year() + __rhs) / __lhs.month(); } 2126 2127constexpr year_month operator+(const years& __lhs, const year_month& __rhs) noexcept 2128{ return __rhs + __lhs; } 2129 2130constexpr months operator-(const year_month& __lhs, const year_month& __rhs) noexcept 2131{ return (__lhs.year() - __rhs.year()) + months(static_cast<unsigned>(__lhs.month()) - static_cast<unsigned>(__rhs.month())); } 2132 2133constexpr year_month operator-(const year_month& __lhs, const months& __rhs) noexcept 2134{ return __lhs + -__rhs; } 2135 2136constexpr year_month operator-(const year_month& __lhs, const years& __rhs) noexcept 2137{ return __lhs + -__rhs; } 2138 2139class year_month_day_last; 2140 2141class year_month_day { 2142private: 2143 chrono::year __y; 2144 chrono::month __m; 2145 chrono::day __d; 2146public: 2147 year_month_day() = default; 2148 inline constexpr year_month_day( 2149 const chrono::year& __yval, const chrono::month& __mval, const chrono::day& __dval) noexcept 2150 : __y{__yval}, __m{__mval}, __d{__dval} {} 2151 constexpr year_month_day(const year_month_day_last& __ymdl) noexcept; 2152 inline constexpr year_month_day(const sys_days& __sysd) noexcept 2153 : year_month_day(__from_days(__sysd.time_since_epoch())) {} 2154 inline explicit constexpr year_month_day(const local_days& __locd) noexcept 2155 : year_month_day(__from_days(__locd.time_since_epoch())) {} 2156 2157 constexpr year_month_day& operator+=(const months& __dm) noexcept; 2158 constexpr year_month_day& operator-=(const months& __dm) noexcept; 2159 constexpr year_month_day& operator+=(const years& __dy) noexcept; 2160 constexpr year_month_day& operator-=(const years& __dy) noexcept; 2161 2162 inline constexpr chrono::year year() const noexcept { return __y; } 2163 inline constexpr chrono::month month() const noexcept { return __m; } 2164 inline constexpr chrono::day day() const noexcept { return __d; } 2165 inline constexpr operator sys_days() const noexcept { return sys_days{__to_days()}; } 2166 inline explicit constexpr operator local_days() const noexcept { return local_days{__to_days()}; } 2167 2168 constexpr bool ok() const noexcept; 2169 2170 static constexpr year_month_day __from_days(days __d) noexcept; 2171 constexpr days __to_days() const noexcept; 2172}; 2173 2174 2175// https://howardhinnant.github.io/date_algorithms.html#civil_from_days 2176inline constexpr 2177year_month_day 2178year_month_day::__from_days(days __d) noexcept 2179{ 2180 static_assert(numeric_limits<unsigned>::digits >= 18, ""); 2181 static_assert(numeric_limits<int>::digits >= 20 , ""); 2182 const int __z = __d.count() + 719468; 2183 const int __era = (__z >= 0 ? __z : __z - 146096) / 146097; 2184 const unsigned __doe = static_cast<unsigned>(__z - __era * 146097); // [0, 146096] 2185 const unsigned __yoe = (__doe - __doe/1460 + __doe/36524 - __doe/146096) / 365; // [0, 399] 2186 const int __yr = static_cast<int>(__yoe) + __era * 400; 2187 const unsigned __doy = __doe - (365 * __yoe + __yoe/4 - __yoe/100); // [0, 365] 2188 const unsigned __mp = (5 * __doy + 2)/153; // [0, 11] 2189 const unsigned __dy = __doy - (153 * __mp + 2)/5 + 1; // [1, 31] 2190 const unsigned __mth = __mp + (__mp < 10 ? 3 : -9); // [1, 12] 2191 return year_month_day{chrono::year{__yr + (__mth <= 2)}, chrono::month{__mth}, chrono::day{__dy}}; 2192} 2193 2194// https://howardhinnant.github.io/date_algorithms.html#days_from_civil 2195inline constexpr days year_month_day::__to_days() const noexcept 2196{ 2197 static_assert(numeric_limits<unsigned>::digits >= 18, ""); 2198 static_assert(numeric_limits<int>::digits >= 20 , ""); 2199 2200 const int __yr = static_cast<int>(__y) - (__m <= February); 2201 const unsigned __mth = static_cast<unsigned>(__m); 2202 const unsigned __dy = static_cast<unsigned>(__d); 2203 2204 const int __era = (__yr >= 0 ? __yr : __yr - 399) / 400; 2205 const unsigned __yoe = static_cast<unsigned>(__yr - __era * 400); // [0, 399] 2206 const unsigned __doy = (153 * (__mth + (__mth > 2 ? -3 : 9)) + 2) / 5 + __dy-1; // [0, 365] 2207 const unsigned __doe = __yoe * 365 + __yoe/4 - __yoe/100 + __doy; // [0, 146096] 2208 return days{__era * 146097 + static_cast<int>(__doe) - 719468}; 2209} 2210 2211inline constexpr 2212bool operator==(const year_month_day& __lhs, const year_month_day& __rhs) noexcept 2213{ return __lhs.year() == __rhs.year() && __lhs.month() == __rhs.month() && __lhs.day() == __rhs.day(); } 2214 2215inline constexpr 2216bool operator!=(const year_month_day& __lhs, const year_month_day& __rhs) noexcept 2217{ return !(__lhs == __rhs); } 2218 2219inline constexpr 2220bool operator< (const year_month_day& __lhs, const year_month_day& __rhs) noexcept 2221{ 2222 if (__lhs.year() < __rhs.year()) return true; 2223 if (__lhs.year() > __rhs.year()) return false; 2224 if (__lhs.month() < __rhs.month()) return true; 2225 if (__lhs.month() > __rhs.month()) return false; 2226 return __lhs.day() < __rhs.day(); 2227} 2228 2229inline constexpr 2230bool operator> (const year_month_day& __lhs, const year_month_day& __rhs) noexcept 2231{ return __rhs < __lhs; } 2232 2233inline constexpr 2234bool operator<=(const year_month_day& __lhs, const year_month_day& __rhs) noexcept 2235{ return !(__rhs < __lhs);} 2236 2237inline constexpr 2238bool operator>=(const year_month_day& __lhs, const year_month_day& __rhs) noexcept 2239{ return !(__lhs < __rhs); } 2240 2241inline constexpr 2242year_month_day operator/(const year_month& __lhs, const day& __rhs) noexcept 2243{ return year_month_day{__lhs.year(), __lhs.month(), __rhs}; } 2244 2245inline constexpr 2246year_month_day operator/(const year_month& __lhs, int __rhs) noexcept 2247{ return __lhs / day(__rhs); } 2248 2249inline constexpr 2250year_month_day operator/(const year& __lhs, const month_day& __rhs) noexcept 2251{ return __lhs / __rhs.month() / __rhs.day(); } 2252 2253inline constexpr 2254year_month_day operator/(int __lhs, const month_day& __rhs) noexcept 2255{ return year(__lhs) / __rhs; } 2256 2257inline constexpr 2258year_month_day operator/(const month_day& __lhs, const year& __rhs) noexcept 2259{ return __rhs / __lhs; } 2260 2261inline constexpr 2262year_month_day operator/(const month_day& __lhs, int __rhs) noexcept 2263{ return year(__rhs) / __lhs; } 2264 2265 2266inline constexpr 2267year_month_day operator+(const year_month_day& __lhs, const months& __rhs) noexcept 2268{ return (__lhs.year()/__lhs.month() + __rhs)/__lhs.day(); } 2269 2270inline constexpr 2271year_month_day operator+(const months& __lhs, const year_month_day& __rhs) noexcept 2272{ return __rhs + __lhs; } 2273 2274inline constexpr 2275year_month_day operator-(const year_month_day& __lhs, const months& __rhs) noexcept 2276{ return __lhs + -__rhs; } 2277 2278inline constexpr 2279year_month_day operator+(const year_month_day& __lhs, const years& __rhs) noexcept 2280{ return (__lhs.year() + __rhs) / __lhs.month() / __lhs.day(); } 2281 2282inline constexpr 2283year_month_day operator+(const years& __lhs, const year_month_day& __rhs) noexcept 2284{ return __rhs + __lhs; } 2285 2286inline constexpr 2287year_month_day operator-(const year_month_day& __lhs, const years& __rhs) noexcept 2288{ return __lhs + -__rhs; } 2289 2290inline constexpr year_month_day& year_month_day::operator+=(const months& __dm) noexcept { *this = *this + __dm; return *this; } 2291inline constexpr year_month_day& year_month_day::operator-=(const months& __dm) noexcept { *this = *this - __dm; return *this; } 2292inline constexpr year_month_day& year_month_day::operator+=(const years& __dy) noexcept { *this = *this + __dy; return *this; } 2293inline constexpr year_month_day& year_month_day::operator-=(const years& __dy) noexcept { *this = *this - __dy; return *this; } 2294 2295class year_month_day_last { 2296private: 2297 chrono::year __y; 2298 chrono::month_day_last __mdl; 2299public: 2300 constexpr year_month_day_last(const year& __yval, const month_day_last& __mdlval) noexcept 2301 : __y{__yval}, __mdl{__mdlval} {} 2302 2303 constexpr year_month_day_last& operator+=(const months& __m) noexcept; 2304 constexpr year_month_day_last& operator-=(const months& __m) noexcept; 2305 constexpr year_month_day_last& operator+=(const years& __y) noexcept; 2306 constexpr year_month_day_last& operator-=(const years& __y) noexcept; 2307 2308 inline constexpr chrono::year year() const noexcept { return __y; } 2309 inline constexpr chrono::month month() const noexcept { return __mdl.month(); } 2310 inline constexpr chrono::month_day_last month_day_last() const noexcept { return __mdl; } 2311 constexpr chrono::day day() const noexcept; 2312 inline constexpr operator sys_days() const noexcept { return sys_days{year()/month()/day()}; } 2313 inline explicit constexpr operator local_days() const noexcept { return local_days{year()/month()/day()}; } 2314 inline constexpr bool ok() const noexcept { return __y.ok() && __mdl.ok(); } 2315}; 2316 2317inline constexpr 2318chrono::day year_month_day_last::day() const noexcept 2319{ 2320 constexpr chrono::day __d[] = 2321 { 2322 chrono::day(31), chrono::day(28), chrono::day(31), 2323 chrono::day(30), chrono::day(31), chrono::day(30), 2324 chrono::day(31), chrono::day(31), chrono::day(30), 2325 chrono::day(31), chrono::day(30), chrono::day(31) 2326 }; 2327 return (month() != February || !__y.is_leap()) && month().ok() ? 2328 __d[static_cast<unsigned>(month()) - 1] : chrono::day{29}; 2329} 2330 2331inline constexpr 2332bool operator==(const year_month_day_last& __lhs, const year_month_day_last& __rhs) noexcept 2333{ return __lhs.year() == __rhs.year() && __lhs.month_day_last() == __rhs.month_day_last(); } 2334 2335inline constexpr 2336bool operator!=(const year_month_day_last& __lhs, const year_month_day_last& __rhs) noexcept 2337{ return !(__lhs == __rhs); } 2338 2339inline constexpr 2340bool operator< (const year_month_day_last& __lhs, const year_month_day_last& __rhs) noexcept 2341{ 2342 if (__lhs.year() < __rhs.year()) return true; 2343 if (__lhs.year() > __rhs.year()) return false; 2344 return __lhs.month_day_last() < __rhs.month_day_last(); 2345} 2346 2347inline constexpr 2348bool operator> (const year_month_day_last& __lhs, const year_month_day_last& __rhs) noexcept 2349{ return __rhs < __lhs; } 2350 2351inline constexpr 2352bool operator<=(const year_month_day_last& __lhs, const year_month_day_last& __rhs) noexcept 2353{ return !(__rhs < __lhs);} 2354 2355inline constexpr 2356bool operator>=(const year_month_day_last& __lhs, const year_month_day_last& __rhs) noexcept 2357{ return !(__lhs < __rhs); } 2358 2359inline constexpr year_month_day_last operator/(const year_month& __lhs, last_spec) noexcept 2360{ return year_month_day_last{__lhs.year(), month_day_last{__lhs.month()}}; } 2361 2362inline constexpr year_month_day_last operator/(const year& __lhs, const month_day_last& __rhs) noexcept 2363{ return year_month_day_last{__lhs, __rhs}; } 2364 2365inline constexpr year_month_day_last operator/(int __lhs, const month_day_last& __rhs) noexcept 2366{ return year_month_day_last{year{__lhs}, __rhs}; } 2367 2368inline constexpr year_month_day_last operator/(const month_day_last& __lhs, const year& __rhs) noexcept 2369{ return __rhs / __lhs; } 2370 2371inline constexpr year_month_day_last operator/(const month_day_last& __lhs, int __rhs) noexcept 2372{ return year{__rhs} / __lhs; } 2373 2374 2375inline constexpr 2376year_month_day_last operator+(const year_month_day_last& __lhs, const months& __rhs) noexcept 2377{ return (__lhs.year() / __lhs.month() + __rhs) / last; } 2378 2379inline constexpr 2380year_month_day_last operator+(const months& __lhs, const year_month_day_last& __rhs) noexcept 2381{ return __rhs + __lhs; } 2382 2383inline constexpr 2384year_month_day_last operator-(const year_month_day_last& __lhs, const months& __rhs) noexcept 2385{ return __lhs + (-__rhs); } 2386 2387inline constexpr 2388year_month_day_last operator+(const year_month_day_last& __lhs, const years& __rhs) noexcept 2389{ return year_month_day_last{__lhs.year() + __rhs, __lhs.month_day_last()}; } 2390 2391inline constexpr 2392year_month_day_last operator+(const years& __lhs, const year_month_day_last& __rhs) noexcept 2393{ return __rhs + __lhs; } 2394 2395inline constexpr 2396year_month_day_last operator-(const year_month_day_last& __lhs, const years& __rhs) noexcept 2397{ return __lhs + (-__rhs); } 2398 2399inline constexpr year_month_day_last& year_month_day_last::operator+=(const months& __dm) noexcept { *this = *this + __dm; return *this; } 2400inline constexpr year_month_day_last& year_month_day_last::operator-=(const months& __dm) noexcept { *this = *this - __dm; return *this; } 2401inline constexpr year_month_day_last& year_month_day_last::operator+=(const years& __dy) noexcept { *this = *this + __dy; return *this; } 2402inline constexpr year_month_day_last& year_month_day_last::operator-=(const years& __dy) noexcept { *this = *this - __dy; return *this; } 2403 2404inline constexpr year_month_day::year_month_day(const year_month_day_last& __ymdl) noexcept 2405 : __y{__ymdl.year()}, __m{__ymdl.month()}, __d{__ymdl.day()} {} 2406 2407inline constexpr bool year_month_day::ok() const noexcept 2408{ 2409 if (!__y.ok() || !__m.ok()) return false; 2410 return chrono::day{1} <= __d && __d <= (__y / __m / last).day(); 2411} 2412 2413class year_month_weekday { 2414 chrono::year __y; 2415 chrono::month __m; 2416 chrono::weekday_indexed __wdi; 2417public: 2418 year_month_weekday() = default; 2419 constexpr year_month_weekday(const chrono::year& __yval, const chrono::month& __mval, 2420 const chrono::weekday_indexed& __wdival) noexcept 2421 : __y{__yval}, __m{__mval}, __wdi{__wdival} {} 2422 constexpr year_month_weekday(const sys_days& __sysd) noexcept 2423 : year_month_weekday(__from_days(__sysd.time_since_epoch())) {} 2424 inline explicit constexpr year_month_weekday(const local_days& __locd) noexcept 2425 : year_month_weekday(__from_days(__locd.time_since_epoch())) {} 2426 constexpr year_month_weekday& operator+=(const months& m) noexcept; 2427 constexpr year_month_weekday& operator-=(const months& m) noexcept; 2428 constexpr year_month_weekday& operator+=(const years& y) noexcept; 2429 constexpr year_month_weekday& operator-=(const years& y) noexcept; 2430 2431 inline constexpr chrono::year year() const noexcept { return __y; } 2432 inline constexpr chrono::month month() const noexcept { return __m; } 2433 inline constexpr chrono::weekday weekday() const noexcept { return __wdi.weekday(); } 2434 inline constexpr unsigned index() const noexcept { return __wdi.index(); } 2435 inline constexpr chrono::weekday_indexed weekday_indexed() const noexcept { return __wdi; } 2436 2437 inline constexpr operator sys_days() const noexcept { return sys_days{__to_days()}; } 2438 inline explicit constexpr operator local_days() const noexcept { return local_days{__to_days()}; } 2439 inline constexpr bool ok() const noexcept 2440 { 2441 if (!__y.ok() || !__m.ok() || !__wdi.ok()) return false; 2442 if (__wdi.index() <= 4) return true; 2443 auto __nth_weekday_day = 2444 __wdi.weekday() - 2445 chrono::weekday{static_cast<sys_days>(__y / __m / 1)} + 2446 days{(__wdi.index() - 1) * 7 + 1}; 2447 return static_cast<unsigned>(__nth_weekday_day.count()) <= 2448 static_cast<unsigned>((__y / __m / last).day()); 2449 } 2450 2451 static constexpr year_month_weekday __from_days(days __d) noexcept; 2452 constexpr days __to_days() const noexcept; 2453}; 2454 2455inline constexpr 2456year_month_weekday year_month_weekday::__from_days(days __d) noexcept 2457{ 2458 const sys_days __sysd{__d}; 2459 const chrono::weekday __wd = chrono::weekday(__sysd); 2460 const year_month_day __ymd = year_month_day(__sysd); 2461 return year_month_weekday{__ymd.year(), __ymd.month(), 2462 __wd[(static_cast<unsigned>(__ymd.day())-1)/7+1]}; 2463} 2464 2465inline constexpr 2466days year_month_weekday::__to_days() const noexcept 2467{ 2468 const sys_days __sysd = sys_days(__y/__m/1); 2469 return (__sysd + (__wdi.weekday() - chrono::weekday(__sysd) + days{(__wdi.index()-1)*7})) 2470 .time_since_epoch(); 2471} 2472 2473inline constexpr 2474bool operator==(const year_month_weekday& __lhs, const year_month_weekday& __rhs) noexcept 2475{ return __lhs.year() == __rhs.year() && __lhs.month() == __rhs.month() && __lhs.weekday_indexed() == __rhs.weekday_indexed(); } 2476 2477inline constexpr 2478bool operator!=(const year_month_weekday& __lhs, const year_month_weekday& __rhs) noexcept 2479{ return !(__lhs == __rhs); } 2480 2481inline constexpr 2482year_month_weekday operator/(const year_month& __lhs, const weekday_indexed& __rhs) noexcept 2483{ return year_month_weekday{__lhs.year(), __lhs.month(), __rhs}; } 2484 2485inline constexpr 2486year_month_weekday operator/(const year& __lhs, const month_weekday& __rhs) noexcept 2487{ return year_month_weekday{__lhs, __rhs.month(), __rhs.weekday_indexed()}; } 2488 2489inline constexpr 2490year_month_weekday operator/(int __lhs, const month_weekday& __rhs) noexcept 2491{ return year(__lhs) / __rhs; } 2492 2493inline constexpr 2494year_month_weekday operator/(const month_weekday& __lhs, const year& __rhs) noexcept 2495{ return __rhs / __lhs; } 2496 2497inline constexpr 2498year_month_weekday operator/(const month_weekday& __lhs, int __rhs) noexcept 2499{ return year(__rhs) / __lhs; } 2500 2501 2502inline constexpr 2503year_month_weekday operator+(const year_month_weekday& __lhs, const months& __rhs) noexcept 2504{ return (__lhs.year() / __lhs.month() + __rhs) / __lhs.weekday_indexed(); } 2505 2506inline constexpr 2507year_month_weekday operator+(const months& __lhs, const year_month_weekday& __rhs) noexcept 2508{ return __rhs + __lhs; } 2509 2510inline constexpr 2511year_month_weekday operator-(const year_month_weekday& __lhs, const months& __rhs) noexcept 2512{ return __lhs + (-__rhs); } 2513 2514inline constexpr 2515year_month_weekday operator+(const year_month_weekday& __lhs, const years& __rhs) noexcept 2516{ return year_month_weekday{__lhs.year() + __rhs, __lhs.month(), __lhs.weekday_indexed()}; } 2517 2518inline constexpr 2519year_month_weekday operator+(const years& __lhs, const year_month_weekday& __rhs) noexcept 2520{ return __rhs + __lhs; } 2521 2522inline constexpr 2523year_month_weekday operator-(const year_month_weekday& __lhs, const years& __rhs) noexcept 2524{ return __lhs + (-__rhs); } 2525 2526 2527inline constexpr year_month_weekday& year_month_weekday::operator+=(const months& __dm) noexcept { *this = *this + __dm; return *this; } 2528inline constexpr year_month_weekday& year_month_weekday::operator-=(const months& __dm) noexcept { *this = *this - __dm; return *this; } 2529inline constexpr year_month_weekday& year_month_weekday::operator+=(const years& __dy) noexcept { *this = *this + __dy; return *this; } 2530inline constexpr year_month_weekday& year_month_weekday::operator-=(const years& __dy) noexcept { *this = *this - __dy; return *this; } 2531 2532class year_month_weekday_last { 2533private: 2534 chrono::year __y; 2535 chrono::month __m; 2536 chrono::weekday_last __wdl; 2537public: 2538 constexpr year_month_weekday_last(const chrono::year& __yval, const chrono::month& __mval, 2539 const chrono::weekday_last& __wdlval) noexcept 2540 : __y{__yval}, __m{__mval}, __wdl{__wdlval} {} 2541 constexpr year_month_weekday_last& operator+=(const months& __dm) noexcept; 2542 constexpr year_month_weekday_last& operator-=(const months& __dm) noexcept; 2543 constexpr year_month_weekday_last& operator+=(const years& __dy) noexcept; 2544 constexpr year_month_weekday_last& operator-=(const years& __dy) noexcept; 2545 2546 inline constexpr chrono::year year() const noexcept { return __y; } 2547 inline constexpr chrono::month month() const noexcept { return __m; } 2548 inline constexpr chrono::weekday weekday() const noexcept { return __wdl.weekday(); } 2549 inline constexpr chrono::weekday_last weekday_last() const noexcept { return __wdl; } 2550 inline constexpr operator sys_days() const noexcept { return sys_days{__to_days()}; } 2551 inline explicit constexpr operator local_days() const noexcept { return local_days{__to_days()}; } 2552 inline constexpr bool ok() const noexcept { return __y.ok() && __m.ok() && __wdl.ok(); } 2553 2554 constexpr days __to_days() const noexcept; 2555 2556}; 2557 2558inline constexpr 2559days year_month_weekday_last::__to_days() const noexcept 2560{ 2561 const sys_days __last = sys_days{__y/__m/last}; 2562 return (__last - (chrono::weekday{__last} - __wdl.weekday())).time_since_epoch(); 2563 2564} 2565 2566inline constexpr 2567bool operator==(const year_month_weekday_last& __lhs, const year_month_weekday_last& __rhs) noexcept 2568{ return __lhs.year() == __rhs.year() && __lhs.month() == __rhs.month() && __lhs.weekday_last() == __rhs.weekday_last(); } 2569 2570inline constexpr 2571bool operator!=(const year_month_weekday_last& __lhs, const year_month_weekday_last& __rhs) noexcept 2572{ return !(__lhs == __rhs); } 2573 2574 2575inline constexpr 2576year_month_weekday_last operator/(const year_month& __lhs, const weekday_last& __rhs) noexcept 2577{ return year_month_weekday_last{__lhs.year(), __lhs.month(), __rhs}; } 2578 2579inline constexpr 2580year_month_weekday_last operator/(const year& __lhs, const month_weekday_last& __rhs) noexcept 2581{ return year_month_weekday_last{__lhs, __rhs.month(), __rhs.weekday_last()}; } 2582 2583inline constexpr 2584year_month_weekday_last operator/(int __lhs, const month_weekday_last& __rhs) noexcept 2585{ return year(__lhs) / __rhs; } 2586 2587inline constexpr 2588year_month_weekday_last operator/(const month_weekday_last& __lhs, const year& __rhs) noexcept 2589{ return __rhs / __lhs; } 2590 2591inline constexpr 2592year_month_weekday_last operator/(const month_weekday_last& __lhs, int __rhs) noexcept 2593{ return year(__rhs) / __lhs; } 2594 2595 2596inline constexpr 2597year_month_weekday_last operator+(const year_month_weekday_last& __lhs, const months& __rhs) noexcept 2598{ return (__lhs.year() / __lhs.month() + __rhs) / __lhs.weekday_last(); } 2599 2600inline constexpr 2601year_month_weekday_last operator+(const months& __lhs, const year_month_weekday_last& __rhs) noexcept 2602{ return __rhs + __lhs; } 2603 2604inline constexpr 2605year_month_weekday_last operator-(const year_month_weekday_last& __lhs, const months& __rhs) noexcept 2606{ return __lhs + (-__rhs); } 2607 2608inline constexpr 2609year_month_weekday_last operator+(const year_month_weekday_last& __lhs, const years& __rhs) noexcept 2610{ return year_month_weekday_last{__lhs.year() + __rhs, __lhs.month(), __lhs.weekday_last()}; } 2611 2612inline constexpr 2613year_month_weekday_last operator+(const years& __lhs, const year_month_weekday_last& __rhs) noexcept 2614{ return __rhs + __lhs; } 2615 2616inline constexpr 2617year_month_weekday_last operator-(const year_month_weekday_last& __lhs, const years& __rhs) noexcept 2618{ return __lhs + (-__rhs); } 2619 2620inline constexpr year_month_weekday_last& year_month_weekday_last::operator+=(const months& __dm) noexcept { *this = *this + __dm; return *this; } 2621inline constexpr year_month_weekday_last& year_month_weekday_last::operator-=(const months& __dm) noexcept { *this = *this - __dm; return *this; } 2622inline constexpr year_month_weekday_last& year_month_weekday_last::operator+=(const years& __dy) noexcept { *this = *this + __dy; return *this; } 2623inline constexpr year_month_weekday_last& year_month_weekday_last::operator-=(const years& __dy) noexcept { *this = *this - __dy; return *this; } 2624 2625 2626template <class _Duration> 2627class hh_mm_ss 2628{ 2629private: 2630 static_assert(__is_duration<_Duration>::value, "template parameter of hh_mm_ss must be a std::chrono::duration"); 2631 using __CommonType = common_type_t<_Duration, chrono::seconds>; 2632 2633 static constexpr uint64_t __pow10(unsigned __exp) 2634 { 2635 uint64_t __ret = 1; 2636 for (unsigned __i = 0; __i < __exp; ++__i) 2637 __ret *= 10U; 2638 return __ret; 2639 } 2640 2641 static constexpr unsigned __width(uint64_t __n, uint64_t __d = 10, unsigned __w = 0) 2642 { 2643 if (__n >= 2 && __d != 0 && __w < 19) 2644 return 1 + __width(__n, __d % __n * 10, __w+1); 2645 return 0; 2646 } 2647 2648public: 2649 static unsigned constexpr fractional_width = __width(__CommonType::period::den) < 19 ? 2650 __width(__CommonType::period::den) : 6u; 2651 using precision = duration<typename __CommonType::rep, ratio<1, __pow10(fractional_width)>>; 2652 2653 constexpr hh_mm_ss() noexcept : hh_mm_ss{_Duration::zero()} {} 2654 2655 constexpr explicit hh_mm_ss(_Duration __d) noexcept : 2656 __is_neg(__d < _Duration(0)), 2657 __h(duration_cast<chrono::hours> (abs(__d))), 2658 __m(duration_cast<chrono::minutes>(abs(__d) - hours())), 2659 __s(duration_cast<chrono::seconds>(abs(__d) - hours() - minutes())), 2660 __f(duration_cast<precision> (abs(__d) - hours() - minutes() - seconds())) 2661 {} 2662 2663 constexpr bool is_negative() const noexcept { return __is_neg; } 2664 constexpr chrono::hours hours() const noexcept { return __h; } 2665 constexpr chrono::minutes minutes() const noexcept { return __m; } 2666 constexpr chrono::seconds seconds() const noexcept { return __s; } 2667 constexpr precision subseconds() const noexcept { return __f; } 2668 2669 constexpr precision to_duration() const noexcept 2670 { 2671 auto __dur = __h + __m + __s + __f; 2672 return __is_neg ? -__dur : __dur; 2673 } 2674 2675 constexpr explicit operator precision() const noexcept { return to_duration(); } 2676 2677private: 2678 bool __is_neg; 2679 chrono::hours __h; 2680 chrono::minutes __m; 2681 chrono::seconds __s; 2682 precision __f; 2683}; 2684 2685constexpr bool is_am(const hours& __h) noexcept { return __h >= hours( 0) && __h < hours(12); } 2686constexpr bool is_pm(const hours& __h) noexcept { return __h >= hours(12) && __h < hours(24); } 2687 2688constexpr hours make12(const hours& __h) noexcept 2689{ 2690 if (__h == hours( 0)) return hours(12); 2691 else if (__h <= hours(12)) return __h; 2692 else return __h - hours(12); 2693} 2694 2695constexpr hours make24(const hours& __h, bool __is_pm) noexcept 2696{ 2697 if (__is_pm) 2698 return __h == hours(12) ? __h : __h + hours(12); 2699 else 2700 return __h == hours(12) ? hours(0) : __h; 2701} 2702 2703#endif // _LIBCPP_STD_VER > 17 2704} // chrono 2705 2706#if _LIBCPP_STD_VER > 11 2707// Suffixes for duration literals [time.duration.literals] 2708inline namespace literals 2709{ 2710 inline namespace chrono_literals 2711 { 2712 2713 constexpr chrono::hours operator""h(unsigned long long __h) 2714 { 2715 return chrono::hours(static_cast<chrono::hours::rep>(__h)); 2716 } 2717 2718 constexpr chrono::duration<long double, ratio<3600,1>> operator""h(long double __h) 2719 { 2720 return chrono::duration<long double, ratio<3600,1>>(__h); 2721 } 2722 2723 2724 constexpr chrono::minutes operator""min(unsigned long long __m) 2725 { 2726 return chrono::minutes(static_cast<chrono::minutes::rep>(__m)); 2727 } 2728 2729 constexpr chrono::duration<long double, ratio<60,1>> operator""min(long double __m) 2730 { 2731 return chrono::duration<long double, ratio<60,1>> (__m); 2732 } 2733 2734 2735 constexpr chrono::seconds operator""s(unsigned long long __s) 2736 { 2737 return chrono::seconds(static_cast<chrono::seconds::rep>(__s)); 2738 } 2739 2740 constexpr chrono::duration<long double> operator""s(long double __s) 2741 { 2742 return chrono::duration<long double> (__s); 2743 } 2744 2745 2746 constexpr chrono::milliseconds operator""ms(unsigned long long __ms) 2747 { 2748 return chrono::milliseconds(static_cast<chrono::milliseconds::rep>(__ms)); 2749 } 2750 2751 constexpr chrono::duration<long double, milli> operator""ms(long double __ms) 2752 { 2753 return chrono::duration<long double, milli>(__ms); 2754 } 2755 2756 2757 constexpr chrono::microseconds operator""us(unsigned long long __us) 2758 { 2759 return chrono::microseconds(static_cast<chrono::microseconds::rep>(__us)); 2760 } 2761 2762 constexpr chrono::duration<long double, micro> operator""us(long double __us) 2763 { 2764 return chrono::duration<long double, micro> (__us); 2765 } 2766 2767 2768 constexpr chrono::nanoseconds operator""ns(unsigned long long __ns) 2769 { 2770 return chrono::nanoseconds(static_cast<chrono::nanoseconds::rep>(__ns)); 2771 } 2772 2773 constexpr chrono::duration<long double, nano> operator""ns(long double __ns) 2774 { 2775 return chrono::duration<long double, nano> (__ns); 2776 } 2777 2778#if _LIBCPP_STD_VER > 17 2779 constexpr chrono::day operator ""d(unsigned long long __d) noexcept 2780 { 2781 return chrono::day(static_cast<unsigned>(__d)); 2782 } 2783 2784 constexpr chrono::year operator ""y(unsigned long long __y) noexcept 2785 { 2786 return chrono::year(static_cast<int>(__y)); 2787 } 2788#endif 2789}} 2790 2791namespace chrono { // hoist the literals into namespace std::chrono 2792 using namespace literals::chrono_literals; 2793} 2794 2795#endif 2796 2797_LIBCPP_END_NAMESPACE_STD 2798 2799#ifndef _LIBCPP_CXX03_LANG 2800_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM 2801struct _FilesystemClock { 2802#if !defined(_LIBCPP_HAS_NO_INT128) 2803 typedef __int128_t rep; 2804 typedef nano period; 2805#else 2806 typedef long long rep; 2807 typedef nano period; 2808#endif 2809 2810 typedef chrono::duration<rep, period> duration; 2811 typedef chrono::time_point<_FilesystemClock> time_point; 2812 2813 _LIBCPP_EXPORTED_FROM_ABI 2814 static _LIBCPP_CONSTEXPR_AFTER_CXX11 const bool is_steady = false; 2815 2816 _LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_FUNC_VIS static time_point now() noexcept; 2817 2818#if _LIBCPP_STD_VER > 17 2819 template <class _Duration> 2820 _LIBCPP_HIDE_FROM_ABI 2821 static chrono::sys_time<_Duration> to_sys(const chrono::file_time<_Duration>& __t) { 2822 return chrono::sys_time<_Duration>(__t.time_since_epoch()); 2823 } 2824 2825 template <class _Duration> 2826 _LIBCPP_HIDE_FROM_ABI 2827 static chrono::file_time<_Duration> from_sys(const chrono::sys_time<_Duration>& __t) { 2828 return chrono::file_time<_Duration>(__t.time_since_epoch()); 2829 } 2830#endif // _LIBCPP_STD_VER > 17 2831}; 2832_LIBCPP_END_NAMESPACE_FILESYSTEM 2833#endif // !_LIBCPP_CXX03_LANG 2834 2835_LIBCPP_POP_MACROS 2836 2837#endif // _LIBCPP_CHRONO 2838