1// -*- C++ -*- 2//===---------------------------- chrono ----------------------------------===// 3// 4// The LLVM Compiler Infrastructure 5// 6// This file is dual licensed under the MIT and the University of Illinois Open 7// Source Licenses. See LICENSE.TXT for details. 8// 9//===----------------------------------------------------------------------===// 10 11#ifndef _LIBCPP_CHRONO 12#define _LIBCPP_CHRONO 13 14/* 15 chrono synopsis 16 17namespace std 18{ 19namespace chrono 20{ 21 22template <class ToDuration, class Rep, class Period> 23constexpr 24ToDuration 25duration_cast(const duration<Rep, Period>& fd); 26 27template <class Rep> struct treat_as_floating_point : is_floating_point<Rep> {}; 28 29template <class Rep> inline constexpr bool treat_as_floating_point_v 30 = treat_as_floating_point<Rep>::value; // C++17 31 32template <class Rep> 33struct duration_values 34{ 35public: 36 static constexpr Rep zero(); 37 static constexpr Rep max(); 38 static constexpr Rep min(); 39}; 40 41// duration 42 43template <class Rep, class Period = ratio<1>> 44class duration 45{ 46 static_assert(!__is_duration<Rep>::value, "A duration representation can not be a duration"); 47 static_assert(__is_ratio<Period>::value, "Second template parameter of duration must be a std::ratio"); 48 static_assert(Period::num > 0, "duration period must be positive"); 49public: 50 typedef Rep rep; 51 typedef typename _Period::type period; 52 53 constexpr duration() = default; 54 template <class Rep2> 55 constexpr explicit duration(const Rep2& r, 56 typename enable_if 57 < 58 is_convertible<Rep2, rep>::value && 59 (treat_as_floating_point<rep>::value || 60 !treat_as_floating_point<rep>::value && !treat_as_floating_point<Rep2>::value) 61 >::type* = 0); 62 63 // conversions 64 template <class Rep2, class Period2> 65 constexpr duration(const duration<Rep2, Period2>& d, 66 typename enable_if 67 < 68 treat_as_floating_point<rep>::value || 69 ratio_divide<Period2, period>::type::den == 1 70 >::type* = 0); 71 72 // observer 73 74 constexpr rep count() const; 75 76 // arithmetic 77 78 constexpr common_type<duration>::type operator+() const; 79 constexpr common_type<duration>::type operator-() const; 80 constexpr duration& operator++(); 81 constexpr duration operator++(int); 82 constexpr duration& operator--(); 83 constexpr duration operator--(int); 84 85 constexpr duration& operator+=(const duration& d); 86 constexpr duration& operator-=(const duration& d); 87 88 duration& operator*=(const rep& rhs); 89 duration& operator/=(const rep& rhs); 90 91 // special values 92 93 static constexpr duration zero(); 94 static constexpr duration min(); 95 static constexpr duration max(); 96}; 97 98typedef duration<long long, nano> nanoseconds; 99typedef duration<long long, micro> microseconds; 100typedef duration<long long, milli> milliseconds; 101typedef duration<long long > seconds; 102typedef duration< long, ratio< 60> > minutes; 103typedef duration< long, ratio<3600> > hours; 104 105template <class Clock, class Duration = typename Clock::duration> 106class time_point 107{ 108public: 109 typedef Clock clock; 110 typedef Duration duration; 111 typedef typename duration::rep rep; 112 typedef typename duration::period period; 113private: 114 duration d_; // exposition only 115 116public: 117 time_point(); // has value "epoch" // constexpr in C++14 118 explicit time_point(const duration& d); // same as time_point() + d // constexpr in C++14 119 120 // conversions 121 template <class Duration2> 122 time_point(const time_point<clock, Duration2>& t); // constexpr in C++14 123 124 // observer 125 126 duration time_since_epoch() const; // constexpr in C++14 127 128 // arithmetic 129 130 time_point& operator+=(const duration& d); 131 time_point& operator-=(const duration& d); 132 133 // special values 134 135 static constexpr time_point min(); 136 static constexpr time_point max(); 137}; 138 139} // chrono 140 141// common_type traits 142template <class Rep1, class Period1, class Rep2, class Period2> 143 struct common_type<chrono::duration<Rep1, Period1>, chrono::duration<Rep2, Period2>>; 144 145template <class Clock, class Duration1, class Duration2> 146 struct common_type<chrono::time_point<Clock, Duration1>, chrono::time_point<Clock, Duration2>>; 147 148namespace chrono { 149 150 151template<class T> struct is_clock; // C++20 152template<class T> inline constexpr bool is_clock_v = is_clock<T>::value; // C++20 153 154 155// duration arithmetic 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 Period1, class Rep2, class Period2> 161 constexpr 162 typename common_type<duration<Rep1, Period1>, duration<Rep2, Period2>>::type 163 operator-(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 164template <class Rep1, class Period, class Rep2> 165 constexpr 166 duration<typename common_type<Rep1, Rep2>::type, Period> 167 operator*(const duration<Rep1, Period>& d, const Rep2& s); 168template <class Rep1, class Period, class Rep2> 169 constexpr 170 duration<typename common_type<Rep1, Rep2>::type, Period> 171 operator*(const Rep1& s, const duration<Rep2, Period>& d); 172template <class Rep1, class Period, class Rep2> 173 constexpr 174 duration<typename common_type<Rep1, Rep2>::type, Period> 175 operator/(const duration<Rep1, Period>& d, const Rep2& s); 176template <class Rep1, class Period1, class Rep2, class Period2> 177 constexpr 178 typename common_type<Rep1, Rep2>::type 179 operator/(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 180 181// duration comparisons 182template <class Rep1, class Period1, class Rep2, class Period2> 183 constexpr 184 bool operator==(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 185template <class Rep1, class Period1, class Rep2, class Period2> 186 constexpr 187 bool operator!=(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 188template <class Rep1, class Period1, class Rep2, class Period2> 189 constexpr 190 bool operator< (const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 191template <class Rep1, class Period1, class Rep2, class Period2> 192 constexpr 193 bool operator<=(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 194template <class Rep1, class Period1, class Rep2, class Period2> 195 constexpr 196 bool operator> (const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 197template <class Rep1, class Period1, class Rep2, class Period2> 198 constexpr 199 bool operator>=(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 200 201// duration_cast 202template <class ToDuration, class Rep, class Period> 203 ToDuration duration_cast(const duration<Rep, Period>& d); 204 205template <class ToDuration, class Rep, class Period> 206 constexpr ToDuration floor(const duration<Rep, Period>& d); // C++17 207template <class ToDuration, class Rep, class Period> 208 constexpr ToDuration ceil(const duration<Rep, Period>& d); // C++17 209template <class ToDuration, class Rep, class Period> 210 constexpr ToDuration round(const duration<Rep, Period>& d); // C++17 211 212// duration I/O is elsewhere 213 214// time_point arithmetic (all constexpr in C++14) 215template <class Clock, class Duration1, class Rep2, class Period2> 216 time_point<Clock, typename common_type<Duration1, duration<Rep2, Period2>>::type> 217 operator+(const time_point<Clock, Duration1>& lhs, const duration<Rep2, Period2>& rhs); 218template <class Rep1, class Period1, class Clock, class Duration2> 219 time_point<Clock, typename common_type<duration<Rep1, Period1>, Duration2>::type> 220 operator+(const duration<Rep1, Period1>& lhs, const time_point<Clock, Duration2>& rhs); 221template <class Clock, class Duration1, class Rep2, class Period2> 222 time_point<Clock, typename common_type<Duration1, duration<Rep2, Period2>>::type> 223 operator-(const time_point<Clock, Duration1>& lhs, const duration<Rep2, Period2>& rhs); 224template <class Clock, class Duration1, class Duration2> 225 typename common_type<Duration1, Duration2>::type 226 operator-(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); 227 228// time_point comparisons (all constexpr in C++14) 229template <class Clock, class Duration1, class Duration2> 230 bool operator==(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); 231template <class Clock, class Duration1, class Duration2> 232 bool operator!=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); 233template <class Clock, class Duration1, class Duration2> 234 bool operator< (const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); 235template <class Clock, class Duration1, class Duration2> 236 bool operator<=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); 237template <class Clock, class Duration1, class Duration2> 238 bool operator> (const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); 239template <class Clock, class Duration1, class Duration2> 240 bool operator>=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); 241 242// time_point_cast (constexpr in C++14) 243 244template <class ToDuration, class Clock, class Duration> 245 time_point<Clock, ToDuration> time_point_cast(const time_point<Clock, Duration>& t); 246 247template <class ToDuration, class Clock, class Duration> 248 constexpr time_point<Clock, ToDuration> 249 floor(const time_point<Clock, Duration>& tp); // C++17 250 251template <class ToDuration, class Clock, class Duration> 252 constexpr time_point<Clock, ToDuration> 253 ceil(const time_point<Clock, Duration>& tp); // C++17 254 255template <class ToDuration, class Clock, class Duration> 256 constexpr time_point<Clock, ToDuration> 257 round(const time_point<Clock, Duration>& tp); // C++17 258 259template <class Rep, class Period> 260 constexpr duration<Rep, Period> abs(duration<Rep, Period> d); // C++17 261 262// Clocks 263 264class system_clock 265{ 266public: 267 typedef microseconds duration; 268 typedef duration::rep rep; 269 typedef duration::period period; 270 typedef chrono::time_point<system_clock> time_point; 271 static const bool is_steady = false; // constexpr in C++14 272 273 static time_point now() noexcept; 274 static time_t to_time_t (const time_point& __t) noexcept; 275 static time_point from_time_t(time_t __t) noexcept; 276}; 277 278template <class Duration> 279 using sys_time = time_point<system_clock, Duration>; // C++20 280using sys_seconds = sys_time<seconds>; // C++20 281using sys_days = sys_time<days>; // C++20 282 283class utc_clock; // C++20 284 285template <class Duration> 286 using utc_time = time_point<utc_clock, Duration>; // C++20 287using utc_seconds = utc_time<seconds>; // C++20 288 289class tai_clock; // C++20 290 291template <class Duration> 292 using tai_time = time_point<tai_clock, Duration>; // C++20 293using tai_seconds = tai_time<seconds>; // C++20 294 295class file_clock; // C++20 296 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// 25.7.9, time_point conversions template<class DestClock, class SourceClock> // C++20 322struct clock_time_conversion; 323 324template<class DestClock, class SourceClock, class Duration> 325 auto clock_cast(const time_point<SourceClock, Duration>& t); 326 327// 25.8.2, class last_spec // C++20 328struct last_spec; 329 330// 25.8.3, class day // C++20 331 332class day; 333constexpr bool operator==(const day& x, const day& y) noexcept; 334constexpr bool operator!=(const day& x, const day& y) noexcept; 335constexpr bool operator< (const day& x, const day& y) noexcept; 336constexpr bool operator> (const day& x, const day& y) noexcept; 337constexpr bool operator<=(const day& x, const day& y) noexcept; 338constexpr bool operator>=(const day& x, const day& y) noexcept; 339constexpr day operator+(const day& x, const days& y) noexcept; 340constexpr day operator+(const days& x, const day& y) noexcept; 341constexpr day operator-(const day& x, const days& y) noexcept; 342constexpr days operator-(const day& x, const day& y) noexcept; 343 344// 25.8.4, class month // C++20 345class month; 346constexpr bool operator==(const month& x, const month& y) noexcept; 347constexpr bool operator!=(const month& x, const month& y) noexcept; 348constexpr bool operator< (const month& x, const month& y) noexcept; 349constexpr bool operator> (const month& x, const month& y) noexcept; 350constexpr bool operator<=(const month& x, const month& y) noexcept; 351constexpr bool operator>=(const month& x, const month& y) noexcept; 352constexpr month operator+(const month& x, const months& y) noexcept; 353constexpr month operator+(const months& x, const month& y) noexcept; 354constexpr month operator-(const month& x, const months& y) noexcept; 355constexpr months operator-(const month& x, const month& y) noexcept; 356 357// 25.8.5, class year // C++20 358class year; 359constexpr bool operator==(const year& x, const year& y) noexcept; 360constexpr bool operator!=(const year& x, const year& y) noexcept; 361constexpr bool operator< (const year& x, const year& y) noexcept; 362constexpr bool operator> (const year& x, const year& y) noexcept; 363constexpr bool operator<=(const year& x, const year& y) noexcept; 364constexpr bool operator>=(const year& x, const year& y) noexcept; 365constexpr year operator+(const year& x, const years& y) noexcept; 366constexpr year operator+(const years& x, const year& y) noexcept; 367constexpr year operator-(const year& x, const years& y) noexcept; 368constexpr years operator-(const year& x, const year& y) noexcept; 369 370// 25.8.6, class weekday // C++20 371class weekday; 372 373constexpr bool operator==(const weekday& x, const weekday& y) noexcept; 374constexpr bool operator!=(const weekday& x, const weekday& y) noexcept; 375constexpr weekday operator+(const weekday& x, const days& y) noexcept; 376constexpr weekday operator+(const days& x, const weekday& y) noexcept; 377constexpr weekday operator-(const weekday& x, const days& y) noexcept; 378constexpr days operator-(const weekday& x, const weekday& y) noexcept; 379 380// 25.8.7, class weekday_indexed // C++20 381 382class weekday_indexed; 383constexpr bool operator==(const weekday_indexed& x, const weekday_indexed& y) noexcept; 384constexpr bool operator!=(const weekday_indexed& x, const weekday_indexed& y) noexcept; 385 386// 25.8.8, class weekday_last // C++20 387class weekday_last; 388 389constexpr bool operator==(const weekday_last& x, const weekday_last& y) noexcept; 390constexpr bool operator!=(const weekday_last& x, const weekday_last& y) noexcept; 391 392// 25.8.9, class month_day // C++20 393class month_day; 394 395constexpr bool operator==(const month_day& x, const month_day& y) noexcept; 396constexpr bool operator!=(const month_day& x, const month_day& y) noexcept; 397constexpr bool operator< (const month_day& x, const month_day& y) noexcept; 398constexpr bool operator> (const month_day& x, const month_day& y) noexcept; 399constexpr bool operator<=(const month_day& x, const month_day& y) noexcept; 400constexpr bool operator>=(const month_day& x, const month_day& y) noexcept; 401 402 403// 25.8.10, class month_day_last // C++20 404class month_day_last; 405 406constexpr bool operator==(const month_day_last& x, const month_day_last& y) noexcept; 407constexpr bool operator!=(const month_day_last& x, const month_day_last& y) noexcept; 408constexpr bool operator< (const month_day_last& x, const month_day_last& y) noexcept; 409constexpr bool operator> (const month_day_last& x, const month_day_last& y) noexcept; 410constexpr bool operator<=(const month_day_last& x, const month_day_last& y) noexcept; 411constexpr bool operator>=(const month_day_last& x, const month_day_last& y) noexcept; 412 413// 25.8.11, class month_weekday // C++20 414class month_weekday; 415 416constexpr bool operator==(const month_weekday& x, const month_weekday& y) noexcept; 417constexpr bool operator!=(const month_weekday& x, const month_weekday& y) noexcept; 418 419// 25.8.12, class month_weekday_last // C++20 420class month_weekday_last; 421 422constexpr bool operator==(const month_weekday_last& x, const month_weekday_last& y) noexcept; 423constexpr bool operator!=(const month_weekday_last& x, const month_weekday_last& y) noexcept; 424 425 426// 25.8.13, class year_month // C++20 427class year_month; 428 429constexpr bool operator==(const year_month& x, const year_month& y) noexcept; 430constexpr bool operator!=(const year_month& x, const year_month& y) noexcept; 431constexpr bool operator< (const year_month& x, const year_month& y) noexcept; 432constexpr bool operator> (const year_month& x, const year_month& y) noexcept; 433constexpr bool operator<=(const year_month& x, const year_month& y) noexcept; 434constexpr bool operator>=(const year_month& x, const year_month& y) noexcept; 435 436constexpr year_month operator+(const year_month& ym, const months& dm) noexcept; 437constexpr year_month operator+(const months& dm, const year_month& ym) noexcept; 438constexpr year_month operator-(const year_month& ym, const months& dm) noexcept; 439constexpr months operator-(const year_month& x, const year_month& y) noexcept; 440constexpr year_month operator+(const year_month& ym, const years& dy) noexcept; 441constexpr year_month operator+(const years& dy, const year_month& ym) noexcept; 442constexpr year_month operator-(const year_month& ym, const years& dy) noexcept; 443 444// 25.8.14, class year_month_day class // C++20 445year_month_day; 446 447constexpr bool operator==(const year_month_day& x, const year_month_day& y) noexcept; 448constexpr bool operator!=(const year_month_day& x, const year_month_day& y) noexcept; 449constexpr bool operator< (const year_month_day& x, const year_month_day& y) noexcept; 450constexpr bool operator> (const year_month_day& x, const year_month_day& y) noexcept; 451constexpr bool operator<=(const year_month_day& x, const year_month_day& y) noexcept; 452constexpr bool operator>=(const year_month_day& x, const year_month_day& y) noexcept; 453 454constexpr year_month_day operator+(const year_month_day& ymd, const months& dm) noexcept; 455constexpr year_month_day operator+(const months& dm, const year_month_day& ymd) noexcept; 456constexpr year_month_day operator+(const year_month_day& ymd, const years& dy) noexcept; 457constexpr year_month_day operator+(const years& dy, const year_month_day& ymd) noexcept; 458constexpr year_month_day operator-(const year_month_day& ymd, const months& dm) noexcept; 459constexpr year_month_day operator-(const year_month_day& ymd, const years& dy) noexcept; 460 461 462// 25.8.15, class year_month_day_last // C++20 463class year_month_day_last; 464 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; 471constexpr bool operator> (const year_month_day_last& x, 472 const year_month_day_last& y) noexcept; 473constexpr bool operator<=(const year_month_day_last& x, 474 const year_month_day_last& y) noexcept; 475constexpr bool operator>=(const year_month_day_last& x, 476 const year_month_day_last& y) noexcept; 477 478constexpr year_month_day_last 479 operator+(const year_month_day_last& ymdl, const months& dm) noexcept; 480constexpr year_month_day_last 481 operator+(const months& dm, const year_month_day_last& ymdl) noexcept; 482constexpr year_month_day_last 483 operator+(const year_month_day_last& ymdl, const years& dy) noexcept; 484constexpr year_month_day_last 485 operator+(const years& dy, const year_month_day_last& ymdl) noexcept; 486constexpr year_month_day_last 487 operator-(const year_month_day_last& ymdl, const months& dm) noexcept; 488constexpr year_month_day_last 489 operator-(const year_month_day_last& ymdl, const years& dy) noexcept; 490 491// 25.8.16, class year_month_weekday // C++20 492class year_month_weekday; 493 494constexpr bool operator==(const year_month_weekday& x, 495 const year_month_weekday& y) noexcept; 496constexpr bool operator!=(const year_month_weekday& x, 497 const year_month_weekday& y) noexcept; 498 499constexpr year_month_weekday 500 operator+(const year_month_weekday& ymwd, const months& dm) noexcept; 501constexpr year_month_weekday 502 operator+(const months& dm, const year_month_weekday& ymwd) noexcept; 503constexpr year_month_weekday 504 operator+(const year_month_weekday& ymwd, const years& dy) noexcept; 505constexpr year_month_weekday 506 operator+(const years& dy, const year_month_weekday& ymwd) noexcept; 507constexpr year_month_weekday 508 operator-(const year_month_weekday& ymwd, const months& dm) noexcept; 509constexpr year_month_weekday 510 operator-(const year_month_weekday& ymwd, const years& dy) noexcept; 511 512// 25.8.17, class year_month_weekday_last // C++20 513class year_month_weekday_last; 514 515constexpr bool operator==(const year_month_weekday_last& x, 516 const year_month_weekday_last& y) noexcept; 517constexpr bool operator!=(const year_month_weekday_last& x, 518 const year_month_weekday_last& y) noexcept; 519constexpr year_month_weekday_last 520 operator+(const year_month_weekday_last& ymwdl, const months& dm) noexcept; 521constexpr year_month_weekday_last 522 operator+(const months& dm, const year_month_weekday_last& ymwdl) noexcept; 523constexpr year_month_weekday_last 524 operator+(const year_month_weekday_last& ymwdl, const years& dy) noexcept; 525constexpr year_month_weekday_last 526 operator+(const years& dy, const year_month_weekday_last& ymwdl) noexcept; 527constexpr year_month_weekday_last 528 operator-(const year_month_weekday_last& ymwdl, const months& dm) noexcept; 529constexpr year_month_weekday_last 530 operator-(const year_month_weekday_last& ymwdl, const years& dy) noexcept; 531 532// 25.8.18, civil calendar conventional syntax operators // C++20 533constexpr year_month 534 operator/(const year& y, const month& m) noexcept; 535constexpr year_month 536 operator/(const year& y, int m) noexcept; 537constexpr month_day 538 operator/(const month& m, const day& d) noexcept; 539constexpr month_day 540 operator/(const month& m, int d) noexcept; 541constexpr month_day 542 operator/(int m, const day& d) noexcept; 543constexpr month_day 544 operator/(const day& d, const month& m) noexcept; 545constexpr month_day 546 operator/(const day& d, int m) noexcept; 547constexpr month_day_last 548 operator/(const month& m, last_spec) noexcept; 549constexpr month_day_last 550 operator/(int m, last_spec) noexcept; 551constexpr month_day_last 552 operator/(last_spec, const month& m) noexcept; 553constexpr month_day_last 554 operator/(last_spec, int m) noexcept; 555constexpr month_weekday 556 operator/(const month& m, const weekday_indexed& wdi) noexcept; 557constexpr month_weekday 558 operator/(int m, const weekday_indexed& wdi) noexcept; 559constexpr month_weekday 560 operator/(const weekday_indexed& wdi, const month& m) noexcept; 561constexpr month_weekday 562 operator/(const weekday_indexed& wdi, int m) noexcept; 563constexpr month_weekday_last 564 operator/(const month& m, const weekday_last& wdl) noexcept; 565constexpr month_weekday_last 566 operator/(int m, const weekday_last& wdl) noexcept; 567constexpr month_weekday_last 568 operator/(const weekday_last& wdl, const month& m) noexcept; 569constexpr month_weekday_last 570 operator/(const weekday_last& wdl, int m) noexcept; 571constexpr year_month_day 572 operator/(const year_month& ym, const day& d) noexcept; 573constexpr year_month_day 574 operator/(const year_month& ym, int d) noexcept; 575constexpr year_month_day 576 operator/(const year& y, const month_day& md) noexcept; 577constexpr year_month_day 578 operator/(int y, const month_day& md) noexcept; 579constexpr year_month_day 580 operator/(const month_day& md, const year& y) noexcept; 581constexpr year_month_day 582 operator/(const month_day& md, int y) noexcept; 583constexpr year_month_day_last 584 operator/(const year_month& ym, last_spec) noexcept; 585constexpr year_month_day_last 586 operator/(const year& y, const month_day_last& mdl) noexcept; 587constexpr year_month_day_last 588 operator/(int y, const month_day_last& mdl) noexcept; 589constexpr year_month_day_last 590 operator/(const month_day_last& mdl, const year& y) noexcept; 591constexpr year_month_day_last 592 operator/(const month_day_last& mdl, int y) noexcept; 593constexpr year_month_weekday 594 operator/(const year_month& ym, const weekday_indexed& wdi) noexcept; 595constexpr year_month_weekday 596 operator/(const year& y, const month_weekday& mwd) noexcept; 597constexpr year_month_weekday 598 operator/(int y, const month_weekday& mwd) noexcept; 599constexpr year_month_weekday 600 operator/(const month_weekday& mwd, const year& y) noexcept; 601constexpr year_month_weekday 602 operator/(const month_weekday& mwd, int y) noexcept; 603constexpr year_month_weekday_last 604 operator/(const year_month& ym, const weekday_last& wdl) noexcept; 605constexpr year_month_weekday_last 606 operator/(const year& y, const month_weekday_last& mwdl) noexcept; 607constexpr year_month_weekday_last 608 operator/(int y, const month_weekday_last& mwdl) noexcept; 609constexpr year_month_weekday_last 610 operator/(const month_weekday_last& mwdl, const year& y) noexcept; 611constexpr year_month_weekday_last 612 operator/(const month_weekday_last& mwdl, int y) noexcept; 613 614// 25.9, class template time_of_day // C++20 615template<class Duration> class time_of_day; 616 617template<> class time_of_day<hours>; 618template<> class time_of_day<minutes>; 619template<> class time_of_day<seconds>; 620template<class Rep, class Period> class time_of_day<duration<Rep, Period>>; 621 622// 25.10.2, time zone database // C++20 623struct tzdb; 624class tzdb_list; 625 626// 25.10.2.3, time zone database access // C++20 627const tzdb& get_tzdb(); 628tzdb_list& get_tzdb_list(); 629const time_zone* locate_zone(string_view tz_name); 630const time_zone* current_zone(); 631 632// 25.10.2.4, remote time zone database support // C++20 633const tzdb& reload_tzdb(); 634string remote_version(); 635 636// 25.10.3, exception classes // C++20 637class nonexistent_local_time; 638class ambiguous_local_time; 639 640// 25.10.4, information classes // C++20 641struct sys_info; 642struct local_info; 643 644// 25.10.5, class time_zone // C++20 645enum class choose {earliest, latest}; 646class time_zone; 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; 650bool operator>(const time_zone& x, const time_zone& y) noexcept; 651bool operator<=(const time_zone& x, const time_zone& y) noexcept; 652bool operator>=(const time_zone& x, const time_zone& y) noexcept; 653 654// 25.10.6, class template zoned_traits // C++20 655template<class T> struct zoned_traits; 656 657// 25.10.7, class template zoned_time // C++20 658template<class Duration, class TimeZonePtr = const time_zone*> class zoned_time; 659using zoned_seconds = zoned_time<seconds>; 660 661template<class Duration1, class Duration2, class TimeZonePtr> 662 bool operator==(const zoned_time<Duration1, TimeZonePtr>& x, 663 const zoned_time<Duration2, TimeZonePtr>& y); 664template<class Duration1, class Duration2, class TimeZonePtr> 665 bool operator!=(const zoned_time<Duration1, TimeZonePtr>& x, 666 const zoned_time<Duration2, TimeZonePtr>& y); 667 668// 25.10.8, leap second support // C++20 669class leap; 670 671bool operator==(const leap& x, const leap& y); 672bool operator!=(const leap& x, const leap& y); 673bool operator< (const leap& x, const leap& y); 674bool operator> (const leap& x, const leap& y); 675bool operator<=(const leap& x, const leap& y); 676bool operator>=(const leap& x, const leap& y); 677template<class Duration> 678 bool operator==(const leap& x, const sys_time<Duration>& y); 679template<class Duration> 680 bool operator==(const sys_time<Duration>& x, const leap& y); 681template<class Duration> 682 bool operator!=(const leap& x, const sys_time<Duration>& y); 683template<class Duration> 684 bool operator!=(const sys_time<Duration>& x, const leap& y); 685template<class Duration> 686 bool operator< (const leap& x, const sys_time<Duration>& y); 687template<class Duration> 688 bool operator< (const sys_time<Duration>& x, const leap& y); 689template<class Duration> 690 bool operator> (const leap& x, const sys_time<Duration>& y); 691template<class Duration> 692 bool operator> (const sys_time<Duration>& x, const leap& y); 693template<class Duration> 694 bool operator<=(const leap& x, const sys_time<Duration>& y); 695template<class Duration> 696 bool operator<=(const sys_time<Duration>& x, const leap& y); 697template<class Duration> 698 bool operator>=(const leap& x, const sys_time<Duration>& y); 699template<class Duration> 700 bool operator>=(const sys_time<Duration>& x, const leap& y); 701 702// 25.10.9, class link // C++20 703class link; 704bool operator==(const link& x, const link& y); 705bool operator!=(const link& x, const link& y); 706bool operator< (const link& x, const link& y); 707bool operator> (const link& x, const link& y); 708bool operator<=(const link& x, const link& y); 709bool operator>=(const link& x, const link& y); 710 711// 25.11, formatting // C++20 712template<class charT, class Streamable> 713 basic_string<charT> 714 format(const charT* fmt, const Streamable& s); 715 716template<class charT, class Streamable> 717 basic_string<charT> 718 format(const locale& loc, const charT* fmt, const Streamable& s); 719 720template<class charT, class traits, class Alloc, class Streamable> 721 basic_string<charT, traits, Alloc> 722 format(const basic_string<charT, traits, Alloc>& fmt, const Streamable& s); 723 724template<class charT, class traits, class Alloc, class Streamable> 725 basic_string<charT, traits, Alloc> 726 format(const locale& loc, const basic_string<charT, traits, Alloc>& fmt, 727 const Streamable& s); 728 729// 25.12, parsing // C++20 730template<class charT, class traits, class Alloc, class Parsable> 731unspecified 732 parse(const basic_string<charT, traits, Alloc>& format, Parsable& tp); 733 734template<class charT, class traits, class Alloc, class Parsable> 735unspecified 736 parse(const basic_string<charT, traits, Alloc>& format, Parsable& tp, 737 basic_string<charT, traits, Alloc>& abbrev); 738 739template<class charT, class traits, class Alloc, class Parsable> 740unspecified 741 parse(const basic_string<charT, traits, Alloc>& format, Parsable& tp, 742 minutes& offset); 743 744template<class charT, class traits, class Alloc, class Parsable> 745unspecified 746 parse(const basic_string<charT, traits, Alloc>& format, Parsable& tp, 747 basic_string<charT, traits, Alloc>& abbrev, minutes& offset); 748 749inline constexpr last_spec last{}; // C++20 750inline constexpr chrono::weekday Sunday{0}; // C++20 751inline constexpr chrono::weekday Monday{1}; // C++20 752inline constexpr chrono::weekday Tuesday{2}; // C++20 753inline constexpr chrono::weekday Wednesday{3}; // C++20 754inline constexpr chrono::weekday Thursday{4}; // C++20 755inline constexpr chrono::weekday Friday{5}; // C++20 756inline constexpr chrono::weekday Saturday{6}; // C++20 757 758inline constexpr chrono::month January{1}; // C++20 759inline constexpr chrono::month February{2}; // C++20 760inline constexpr chrono::month March{3}; // C++20 761inline constexpr chrono::month April{4}; // C++20 762inline constexpr chrono::month May{5}; // C++20 763inline constexpr chrono::month June{6}; // C++20 764inline constexpr chrono::month July{7}; // C++20 765inline constexpr chrono::month August{8}; // C++20 766inline constexpr chrono::month September{9}; // C++20 767inline constexpr chrono::month October{10}; // C++20 768inline constexpr chrono::month November{11}; // C++20 769inline constexpr chrono::month December{12}; // C++20 770} // chrono 771 772inline namespace literals { 773 inline namespace chrono_literals { 774constexpr chrono::hours operator ""h(unsigned long long); // C++14 775constexpr chrono::duration<unspecified , ratio<3600,1>> operator ""h(long double); // C++14 776constexpr chrono::minutes operator ""min(unsigned long long); // C++14 777constexpr chrono::duration<unspecified , ratio<60,1>> operator ""min(long double); // C++14 778constexpr chrono::seconds operator ""s(unsigned long long); // C++14 779constexpr chrono::duration<unspecified > operator ""s(long double); // C++14 780constexpr chrono::milliseconds operator ""ms(unsigned long long); // C++14 781constexpr chrono::duration<unspecified , milli> operator ""ms(long double); // C++14 782constexpr chrono::microseconds operator ""us(unsigned long long); // C++14 783constexpr chrono::duration<unspecified , micro> operator ""us(long double); // C++14 784constexpr chrono::nanoseconds operator ""ns(unsigned long long); // C++14 785constexpr chrono::duration<unspecified , nano> operator ""ns(long double); // C++14 786constexpr chrono::day operator ""d(unsigned long long d) noexcept; // C++20 787constexpr chrono::year operator ""y(unsigned long long y) noexcept; // C++20 788} // chrono_literals 789} // literals 790 791} // std 792*/ 793 794#include <__config> 795#include <ctime> 796#include <type_traits> 797#include <ratio> 798#include <limits> 799 800#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 801#pragma GCC system_header 802#endif 803 804_LIBCPP_PUSH_MACROS 805#include <__undef_macros> 806 807 808_LIBCPP_BEGIN_NAMESPACE_STD 809 810namespace chrono 811{ 812 813template <class _Rep, class _Period = ratio<1> > class _LIBCPP_TEMPLATE_VIS duration; 814 815template <class _Tp> 816struct __is_duration : false_type {}; 817 818template <class _Rep, class _Period> 819struct __is_duration<duration<_Rep, _Period> > : true_type {}; 820 821template <class _Rep, class _Period> 822struct __is_duration<const duration<_Rep, _Period> > : true_type {}; 823 824template <class _Rep, class _Period> 825struct __is_duration<volatile duration<_Rep, _Period> > : true_type {}; 826 827template <class _Rep, class _Period> 828struct __is_duration<const volatile duration<_Rep, _Period> > : true_type {}; 829 830} // chrono 831 832template <class _Rep1, class _Period1, class _Rep2, class _Period2> 833struct _LIBCPP_TEMPLATE_VIS common_type<chrono::duration<_Rep1, _Period1>, 834 chrono::duration<_Rep2, _Period2> > 835{ 836 typedef chrono::duration<typename common_type<_Rep1, _Rep2>::type, 837 typename __ratio_gcd<_Period1, _Period2>::type> type; 838}; 839 840namespace chrono { 841 842// duration_cast 843 844template <class _FromDuration, class _ToDuration, 845 class _Period = typename ratio_divide<typename _FromDuration::period, typename _ToDuration::period>::type, 846 bool = _Period::num == 1, 847 bool = _Period::den == 1> 848struct __duration_cast; 849 850template <class _FromDuration, class _ToDuration, class _Period> 851struct __duration_cast<_FromDuration, _ToDuration, _Period, true, true> 852{ 853 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 854 _ToDuration operator()(const _FromDuration& __fd) const 855 { 856 return _ToDuration(static_cast<typename _ToDuration::rep>(__fd.count())); 857 } 858}; 859 860template <class _FromDuration, class _ToDuration, class _Period> 861struct __duration_cast<_FromDuration, _ToDuration, _Period, true, false> 862{ 863 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 864 _ToDuration operator()(const _FromDuration& __fd) const 865 { 866 typedef typename common_type<typename _ToDuration::rep, typename _FromDuration::rep, intmax_t>::type _Ct; 867 return _ToDuration(static_cast<typename _ToDuration::rep>( 868 static_cast<_Ct>(__fd.count()) / static_cast<_Ct>(_Period::den))); 869 } 870}; 871 872template <class _FromDuration, class _ToDuration, class _Period> 873struct __duration_cast<_FromDuration, _ToDuration, _Period, false, true> 874{ 875 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 876 _ToDuration operator()(const _FromDuration& __fd) const 877 { 878 typedef typename common_type<typename _ToDuration::rep, typename _FromDuration::rep, intmax_t>::type _Ct; 879 return _ToDuration(static_cast<typename _ToDuration::rep>( 880 static_cast<_Ct>(__fd.count()) * static_cast<_Ct>(_Period::num))); 881 } 882}; 883 884template <class _FromDuration, class _ToDuration, class _Period> 885struct __duration_cast<_FromDuration, _ToDuration, _Period, false, false> 886{ 887 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 888 _ToDuration operator()(const _FromDuration& __fd) const 889 { 890 typedef typename common_type<typename _ToDuration::rep, typename _FromDuration::rep, intmax_t>::type _Ct; 891 return _ToDuration(static_cast<typename _ToDuration::rep>( 892 static_cast<_Ct>(__fd.count()) * static_cast<_Ct>(_Period::num) 893 / static_cast<_Ct>(_Period::den))); 894 } 895}; 896 897template <class _ToDuration, class _Rep, class _Period> 898inline _LIBCPP_INLINE_VISIBILITY 899_LIBCPP_CONSTEXPR 900typename enable_if 901< 902 __is_duration<_ToDuration>::value, 903 _ToDuration 904>::type 905duration_cast(const duration<_Rep, _Period>& __fd) 906{ 907 return __duration_cast<duration<_Rep, _Period>, _ToDuration>()(__fd); 908} 909 910template <class _Rep> 911struct _LIBCPP_TEMPLATE_VIS treat_as_floating_point : is_floating_point<_Rep> {}; 912 913#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) 914template <class _Rep> 915_LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool treat_as_floating_point_v 916 = treat_as_floating_point<_Rep>::value; 917#endif 918 919template <class _Rep> 920struct _LIBCPP_TEMPLATE_VIS duration_values 921{ 922public: 923 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR _Rep zero() {return _Rep(0);} 924 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR _Rep max() {return numeric_limits<_Rep>::max();} 925 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR _Rep min() {return numeric_limits<_Rep>::lowest();} 926}; 927 928#if _LIBCPP_STD_VER > 14 929template <class _ToDuration, class _Rep, class _Period> 930inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 931typename enable_if 932< 933 __is_duration<_ToDuration>::value, 934 _ToDuration 935>::type 936floor(const duration<_Rep, _Period>& __d) 937{ 938 _ToDuration __t = duration_cast<_ToDuration>(__d); 939 if (__t > __d) 940 __t = __t - _ToDuration{1}; 941 return __t; 942} 943 944template <class _ToDuration, class _Rep, class _Period> 945inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 946typename enable_if 947< 948 __is_duration<_ToDuration>::value, 949 _ToDuration 950>::type 951ceil(const duration<_Rep, _Period>& __d) 952{ 953 _ToDuration __t = duration_cast<_ToDuration>(__d); 954 if (__t < __d) 955 __t = __t + _ToDuration{1}; 956 return __t; 957} 958 959template <class _ToDuration, class _Rep, class _Period> 960inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 961typename enable_if 962< 963 __is_duration<_ToDuration>::value, 964 _ToDuration 965>::type 966round(const duration<_Rep, _Period>& __d) 967{ 968 _ToDuration __lower = floor<_ToDuration>(__d); 969 _ToDuration __upper = __lower + _ToDuration{1}; 970 auto __lowerDiff = __d - __lower; 971 auto __upperDiff = __upper - __d; 972 if (__lowerDiff < __upperDiff) 973 return __lower; 974 if (__lowerDiff > __upperDiff) 975 return __upper; 976 return __lower.count() & 1 ? __upper : __lower; 977} 978#endif 979 980// duration 981 982template <class _Rep, class _Period> 983class _LIBCPP_TEMPLATE_VIS duration 984{ 985 static_assert(!__is_duration<_Rep>::value, "A duration representation can not be a duration"); 986 static_assert(__is_ratio<_Period>::value, "Second template parameter of duration must be a std::ratio"); 987 static_assert(_Period::num > 0, "duration period must be positive"); 988 989 template <class _R1, class _R2> 990 struct __no_overflow 991 { 992 private: 993 static const intmax_t __gcd_n1_n2 = __static_gcd<_R1::num, _R2::num>::value; 994 static const intmax_t __gcd_d1_d2 = __static_gcd<_R1::den, _R2::den>::value; 995 static const intmax_t __n1 = _R1::num / __gcd_n1_n2; 996 static const intmax_t __d1 = _R1::den / __gcd_d1_d2; 997 static const intmax_t __n2 = _R2::num / __gcd_n1_n2; 998 static const intmax_t __d2 = _R2::den / __gcd_d1_d2; 999 static const intmax_t max = -((intmax_t(1) << (sizeof(intmax_t) * CHAR_BIT - 1)) + 1); 1000 1001 template <intmax_t _Xp, intmax_t _Yp, bool __overflow> 1002 struct __mul // __overflow == false 1003 { 1004 static const intmax_t value = _Xp * _Yp; 1005 }; 1006 1007 template <intmax_t _Xp, intmax_t _Yp> 1008 struct __mul<_Xp, _Yp, true> 1009 { 1010 static const intmax_t value = 1; 1011 }; 1012 1013 public: 1014 static const bool value = (__n1 <= max / __d2) && (__n2 <= max / __d1); 1015 typedef ratio<__mul<__n1, __d2, !value>::value, 1016 __mul<__n2, __d1, !value>::value> type; 1017 }; 1018 1019public: 1020 typedef _Rep rep; 1021 typedef typename _Period::type period; 1022private: 1023 rep __rep_; 1024public: 1025 1026 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 1027#ifndef _LIBCPP_CXX03_LANG 1028 duration() = default; 1029#else 1030 duration() {} 1031#endif 1032 1033 template <class _Rep2> 1034 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 1035 explicit duration(const _Rep2& __r, 1036 typename enable_if 1037 < 1038 is_convertible<_Rep2, rep>::value && 1039 (treat_as_floating_point<rep>::value || 1040 !treat_as_floating_point<_Rep2>::value) 1041 >::type* = 0) 1042 : __rep_(__r) {} 1043 1044 // conversions 1045 template <class _Rep2, class _Period2> 1046 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 1047 duration(const duration<_Rep2, _Period2>& __d, 1048 typename enable_if 1049 < 1050 __no_overflow<_Period2, period>::value && ( 1051 treat_as_floating_point<rep>::value || 1052 (__no_overflow<_Period2, period>::type::den == 1 && 1053 !treat_as_floating_point<_Rep2>::value)) 1054 >::type* = 0) 1055 : __rep_(_VSTD::chrono::duration_cast<duration>(__d).count()) {} 1056 1057 // observer 1058 1059 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR rep count() const {return __rep_;} 1060 1061 // arithmetic 1062 1063 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR typename common_type<duration>::type operator+() const {return typename common_type<duration>::type(*this);} 1064 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR typename common_type<duration>::type operator-() const {return typename common_type<duration>::type(-__rep_);} 1065 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator++() {++__rep_; return *this;} 1066 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration operator++(int) {return duration(__rep_++);} 1067 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator--() {--__rep_; return *this;} 1068 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration operator--(int) {return duration(__rep_--);} 1069 1070 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator+=(const duration& __d) {__rep_ += __d.count(); return *this;} 1071 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator-=(const duration& __d) {__rep_ -= __d.count(); return *this;} 1072 1073 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator*=(const rep& rhs) {__rep_ *= rhs; return *this;} 1074 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator/=(const rep& rhs) {__rep_ /= rhs; return *this;} 1075 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator%=(const rep& rhs) {__rep_ %= rhs; return *this;} 1076 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator%=(const duration& rhs) {__rep_ %= rhs.count(); return *this;} 1077 1078 // special values 1079 1080 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR duration zero() {return duration(duration_values<rep>::zero());} 1081 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR duration min() {return duration(duration_values<rep>::min());} 1082 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR duration max() {return duration(duration_values<rep>::max());} 1083}; 1084 1085typedef duration<long long, nano> nanoseconds; 1086typedef duration<long long, micro> microseconds; 1087typedef duration<long long, milli> milliseconds; 1088typedef duration<long long > seconds; 1089typedef duration< long, ratio< 60> > minutes; 1090typedef duration< long, ratio<3600> > hours; 1091 1092// Duration == 1093 1094template <class _LhsDuration, class _RhsDuration> 1095struct __duration_eq 1096{ 1097 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 1098 bool operator()(const _LhsDuration& __lhs, const _RhsDuration& __rhs) const 1099 { 1100 typedef typename common_type<_LhsDuration, _RhsDuration>::type _Ct; 1101 return _Ct(__lhs).count() == _Ct(__rhs).count(); 1102 } 1103}; 1104 1105template <class _LhsDuration> 1106struct __duration_eq<_LhsDuration, _LhsDuration> 1107{ 1108 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 1109 bool operator()(const _LhsDuration& __lhs, const _LhsDuration& __rhs) const 1110 {return __lhs.count() == __rhs.count();} 1111}; 1112 1113template <class _Rep1, class _Period1, class _Rep2, class _Period2> 1114inline _LIBCPP_INLINE_VISIBILITY 1115_LIBCPP_CONSTEXPR 1116bool 1117operator==(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 1118{ 1119 return __duration_eq<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >()(__lhs, __rhs); 1120} 1121 1122// Duration != 1123 1124template <class _Rep1, class _Period1, class _Rep2, class _Period2> 1125inline _LIBCPP_INLINE_VISIBILITY 1126_LIBCPP_CONSTEXPR 1127bool 1128operator!=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 1129{ 1130 return !(__lhs == __rhs); 1131} 1132 1133// Duration < 1134 1135template <class _LhsDuration, class _RhsDuration> 1136struct __duration_lt 1137{ 1138 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 1139 bool operator()(const _LhsDuration& __lhs, const _RhsDuration& __rhs) const 1140 { 1141 typedef typename common_type<_LhsDuration, _RhsDuration>::type _Ct; 1142 return _Ct(__lhs).count() < _Ct(__rhs).count(); 1143 } 1144}; 1145 1146template <class _LhsDuration> 1147struct __duration_lt<_LhsDuration, _LhsDuration> 1148{ 1149 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 1150 bool operator()(const _LhsDuration& __lhs, const _LhsDuration& __rhs) const 1151 {return __lhs.count() < __rhs.count();} 1152}; 1153 1154template <class _Rep1, class _Period1, class _Rep2, class _Period2> 1155inline _LIBCPP_INLINE_VISIBILITY 1156_LIBCPP_CONSTEXPR 1157bool 1158operator< (const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 1159{ 1160 return __duration_lt<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >()(__lhs, __rhs); 1161} 1162 1163// Duration > 1164 1165template <class _Rep1, class _Period1, class _Rep2, class _Period2> 1166inline _LIBCPP_INLINE_VISIBILITY 1167_LIBCPP_CONSTEXPR 1168bool 1169operator> (const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 1170{ 1171 return __rhs < __lhs; 1172} 1173 1174// Duration <= 1175 1176template <class _Rep1, class _Period1, class _Rep2, class _Period2> 1177inline _LIBCPP_INLINE_VISIBILITY 1178_LIBCPP_CONSTEXPR 1179bool 1180operator<=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 1181{ 1182 return !(__rhs < __lhs); 1183} 1184 1185// Duration >= 1186 1187template <class _Rep1, class _Period1, class _Rep2, class _Period2> 1188inline _LIBCPP_INLINE_VISIBILITY 1189_LIBCPP_CONSTEXPR 1190bool 1191operator>=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 1192{ 1193 return !(__lhs < __rhs); 1194} 1195 1196// Duration + 1197 1198template <class _Rep1, class _Period1, class _Rep2, class _Period2> 1199inline _LIBCPP_INLINE_VISIBILITY 1200_LIBCPP_CONSTEXPR 1201typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type 1202operator+(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 1203{ 1204 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Cd; 1205 return _Cd(_Cd(__lhs).count() + _Cd(__rhs).count()); 1206} 1207 1208// Duration - 1209 1210template <class _Rep1, class _Period1, class _Rep2, class _Period2> 1211inline _LIBCPP_INLINE_VISIBILITY 1212_LIBCPP_CONSTEXPR 1213typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type 1214operator-(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 1215{ 1216 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Cd; 1217 return _Cd(_Cd(__lhs).count() - _Cd(__rhs).count()); 1218} 1219 1220// Duration * 1221 1222template <class _Rep1, class _Period, class _Rep2> 1223inline _LIBCPP_INLINE_VISIBILITY 1224_LIBCPP_CONSTEXPR 1225typename enable_if 1226< 1227 is_convertible<_Rep2, typename common_type<_Rep1, _Rep2>::type>::value, 1228 duration<typename common_type<_Rep1, _Rep2>::type, _Period> 1229>::type 1230operator*(const duration<_Rep1, _Period>& __d, const _Rep2& __s) 1231{ 1232 typedef typename common_type<_Rep1, _Rep2>::type _Cr; 1233 typedef duration<_Cr, _Period> _Cd; 1234 return _Cd(_Cd(__d).count() * static_cast<_Cr>(__s)); 1235} 1236 1237template <class _Rep1, class _Period, class _Rep2> 1238inline _LIBCPP_INLINE_VISIBILITY 1239_LIBCPP_CONSTEXPR 1240typename enable_if 1241< 1242 is_convertible<_Rep1, typename common_type<_Rep1, _Rep2>::type>::value, 1243 duration<typename common_type<_Rep1, _Rep2>::type, _Period> 1244>::type 1245operator*(const _Rep1& __s, const duration<_Rep2, _Period>& __d) 1246{ 1247 return __d * __s; 1248} 1249 1250// Duration / 1251 1252template <class _Duration, class _Rep, bool = __is_duration<_Rep>::value> 1253struct __duration_divide_result 1254{ 1255}; 1256 1257template <class _Duration, class _Rep2, 1258 bool = is_convertible<_Rep2, 1259 typename common_type<typename _Duration::rep, _Rep2>::type>::value> 1260struct __duration_divide_imp 1261{ 1262}; 1263 1264template <class _Rep1, class _Period, class _Rep2> 1265struct __duration_divide_imp<duration<_Rep1, _Period>, _Rep2, true> 1266{ 1267 typedef duration<typename common_type<_Rep1, _Rep2>::type, _Period> type; 1268}; 1269 1270template <class _Rep1, class _Period, class _Rep2> 1271struct __duration_divide_result<duration<_Rep1, _Period>, _Rep2, false> 1272 : __duration_divide_imp<duration<_Rep1, _Period>, _Rep2> 1273{ 1274}; 1275 1276template <class _Rep1, class _Period, class _Rep2> 1277inline _LIBCPP_INLINE_VISIBILITY 1278_LIBCPP_CONSTEXPR 1279typename __duration_divide_result<duration<_Rep1, _Period>, _Rep2>::type 1280operator/(const duration<_Rep1, _Period>& __d, const _Rep2& __s) 1281{ 1282 typedef typename common_type<_Rep1, _Rep2>::type _Cr; 1283 typedef duration<_Cr, _Period> _Cd; 1284 return _Cd(_Cd(__d).count() / static_cast<_Cr>(__s)); 1285} 1286 1287template <class _Rep1, class _Period1, class _Rep2, class _Period2> 1288inline _LIBCPP_INLINE_VISIBILITY 1289_LIBCPP_CONSTEXPR 1290typename common_type<_Rep1, _Rep2>::type 1291operator/(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 1292{ 1293 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Ct; 1294 return _Ct(__lhs).count() / _Ct(__rhs).count(); 1295} 1296 1297// Duration % 1298 1299template <class _Rep1, class _Period, class _Rep2> 1300inline _LIBCPP_INLINE_VISIBILITY 1301_LIBCPP_CONSTEXPR 1302typename __duration_divide_result<duration<_Rep1, _Period>, _Rep2>::type 1303operator%(const duration<_Rep1, _Period>& __d, const _Rep2& __s) 1304{ 1305 typedef typename common_type<_Rep1, _Rep2>::type _Cr; 1306 typedef duration<_Cr, _Period> _Cd; 1307 return _Cd(_Cd(__d).count() % static_cast<_Cr>(__s)); 1308} 1309 1310template <class _Rep1, class _Period1, class _Rep2, class _Period2> 1311inline _LIBCPP_INLINE_VISIBILITY 1312_LIBCPP_CONSTEXPR 1313typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type 1314operator%(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 1315{ 1316 typedef typename common_type<_Rep1, _Rep2>::type _Cr; 1317 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Cd; 1318 return _Cd(static_cast<_Cr>(_Cd(__lhs).count()) % static_cast<_Cr>(_Cd(__rhs).count())); 1319} 1320 1321////////////////////////////////////////////////////////// 1322///////////////////// time_point ///////////////////////// 1323////////////////////////////////////////////////////////// 1324 1325template <class _Clock, class _Duration = typename _Clock::duration> 1326class _LIBCPP_TEMPLATE_VIS time_point 1327{ 1328 static_assert(__is_duration<_Duration>::value, 1329 "Second template parameter of time_point must be a std::chrono::duration"); 1330public: 1331 typedef _Clock clock; 1332 typedef _Duration duration; 1333 typedef typename duration::rep rep; 1334 typedef typename duration::period period; 1335private: 1336 duration __d_; 1337 1338public: 1339 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 time_point() : __d_(duration::zero()) {} 1340 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 explicit time_point(const duration& __d) : __d_(__d) {} 1341 1342 // conversions 1343 template <class _Duration2> 1344 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1345 time_point(const time_point<clock, _Duration2>& t, 1346 typename enable_if 1347 < 1348 is_convertible<_Duration2, duration>::value 1349 >::type* = 0) 1350 : __d_(t.time_since_epoch()) {} 1351 1352 // observer 1353 1354 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 duration time_since_epoch() const {return __d_;} 1355 1356 // arithmetic 1357 1358 _LIBCPP_INLINE_VISIBILITY time_point& operator+=(const duration& __d) {__d_ += __d; return *this;} 1359 _LIBCPP_INLINE_VISIBILITY time_point& operator-=(const duration& __d) {__d_ -= __d; return *this;} 1360 1361 // special values 1362 1363 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR time_point min() {return time_point(duration::min());} 1364 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR time_point max() {return time_point(duration::max());} 1365}; 1366 1367} // chrono 1368 1369template <class _Clock, class _Duration1, class _Duration2> 1370struct _LIBCPP_TEMPLATE_VIS common_type<chrono::time_point<_Clock, _Duration1>, 1371 chrono::time_point<_Clock, _Duration2> > 1372{ 1373 typedef chrono::time_point<_Clock, typename common_type<_Duration1, _Duration2>::type> type; 1374}; 1375 1376namespace chrono { 1377 1378template <class _ToDuration, class _Clock, class _Duration> 1379inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1380time_point<_Clock, _ToDuration> 1381time_point_cast(const time_point<_Clock, _Duration>& __t) 1382{ 1383 return time_point<_Clock, _ToDuration>(_VSTD::chrono::duration_cast<_ToDuration>(__t.time_since_epoch())); 1384} 1385 1386#if _LIBCPP_STD_VER > 14 1387template <class _ToDuration, class _Clock, class _Duration> 1388inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 1389typename enable_if 1390< 1391 __is_duration<_ToDuration>::value, 1392 time_point<_Clock, _ToDuration> 1393>::type 1394floor(const time_point<_Clock, _Duration>& __t) 1395{ 1396 return time_point<_Clock, _ToDuration>{floor<_ToDuration>(__t.time_since_epoch())}; 1397} 1398 1399template <class _ToDuration, class _Clock, class _Duration> 1400inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 1401typename enable_if 1402< 1403 __is_duration<_ToDuration>::value, 1404 time_point<_Clock, _ToDuration> 1405>::type 1406ceil(const time_point<_Clock, _Duration>& __t) 1407{ 1408 return time_point<_Clock, _ToDuration>{ceil<_ToDuration>(__t.time_since_epoch())}; 1409} 1410 1411template <class _ToDuration, class _Clock, class _Duration> 1412inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 1413typename enable_if 1414< 1415 __is_duration<_ToDuration>::value, 1416 time_point<_Clock, _ToDuration> 1417>::type 1418round(const time_point<_Clock, _Duration>& __t) 1419{ 1420 return time_point<_Clock, _ToDuration>{round<_ToDuration>(__t.time_since_epoch())}; 1421} 1422 1423template <class _Rep, class _Period> 1424inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 1425typename enable_if 1426< 1427 numeric_limits<_Rep>::is_signed, 1428 duration<_Rep, _Period> 1429>::type 1430abs(duration<_Rep, _Period> __d) 1431{ 1432 return __d >= __d.zero() ? __d : -__d; 1433} 1434#endif 1435 1436// time_point == 1437 1438template <class _Clock, class _Duration1, class _Duration2> 1439inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1440bool 1441operator==(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) 1442{ 1443 return __lhs.time_since_epoch() == __rhs.time_since_epoch(); 1444} 1445 1446// time_point != 1447 1448template <class _Clock, class _Duration1, class _Duration2> 1449inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1450bool 1451operator!=(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) 1452{ 1453 return !(__lhs == __rhs); 1454} 1455 1456// time_point < 1457 1458template <class _Clock, class _Duration1, class _Duration2> 1459inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1460bool 1461operator<(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) 1462{ 1463 return __lhs.time_since_epoch() < __rhs.time_since_epoch(); 1464} 1465 1466// time_point > 1467 1468template <class _Clock, class _Duration1, class _Duration2> 1469inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1470bool 1471operator>(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) 1472{ 1473 return __rhs < __lhs; 1474} 1475 1476// time_point <= 1477 1478template <class _Clock, class _Duration1, class _Duration2> 1479inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1480bool 1481operator<=(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) 1482{ 1483 return !(__rhs < __lhs); 1484} 1485 1486// time_point >= 1487 1488template <class _Clock, class _Duration1, class _Duration2> 1489inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1490bool 1491operator>=(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) 1492{ 1493 return !(__lhs < __rhs); 1494} 1495 1496// time_point operator+(time_point x, duration y); 1497 1498template <class _Clock, class _Duration1, class _Rep2, class _Period2> 1499inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1500time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type> 1501operator+(const time_point<_Clock, _Duration1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 1502{ 1503 typedef time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type> _Tr; 1504 return _Tr (__lhs.time_since_epoch() + __rhs); 1505} 1506 1507// time_point operator+(duration x, time_point y); 1508 1509template <class _Rep1, class _Period1, class _Clock, class _Duration2> 1510inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1511time_point<_Clock, typename common_type<duration<_Rep1, _Period1>, _Duration2>::type> 1512operator+(const duration<_Rep1, _Period1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) 1513{ 1514 return __rhs + __lhs; 1515} 1516 1517// time_point operator-(time_point x, duration y); 1518 1519template <class _Clock, class _Duration1, class _Rep2, class _Period2> 1520inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1521time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type> 1522operator-(const time_point<_Clock, _Duration1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 1523{ 1524 typedef time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type> _Ret; 1525 return _Ret(__lhs.time_since_epoch() -__rhs); 1526} 1527 1528// duration operator-(time_point x, time_point y); 1529 1530template <class _Clock, class _Duration1, class _Duration2> 1531inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1532typename common_type<_Duration1, _Duration2>::type 1533operator-(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) 1534{ 1535 return __lhs.time_since_epoch() - __rhs.time_since_epoch(); 1536} 1537 1538////////////////////////////////////////////////////////// 1539/////////////////////// clocks /////////////////////////// 1540////////////////////////////////////////////////////////// 1541 1542class _LIBCPP_TYPE_VIS system_clock 1543{ 1544public: 1545 typedef microseconds duration; 1546 typedef duration::rep rep; 1547 typedef duration::period period; 1548 typedef chrono::time_point<system_clock> time_point; 1549 static _LIBCPP_CONSTEXPR_AFTER_CXX11 const bool is_steady = false; 1550 1551 static time_point now() _NOEXCEPT; 1552 static time_t to_time_t (const time_point& __t) _NOEXCEPT; 1553 static time_point from_time_t(time_t __t) _NOEXCEPT; 1554}; 1555 1556#ifndef _LIBCPP_HAS_NO_MONOTONIC_CLOCK 1557class _LIBCPP_TYPE_VIS steady_clock 1558{ 1559public: 1560 typedef nanoseconds duration; 1561 typedef duration::rep rep; 1562 typedef duration::period period; 1563 typedef chrono::time_point<steady_clock, duration> time_point; 1564 static _LIBCPP_CONSTEXPR_AFTER_CXX11 const bool is_steady = true; 1565 1566 static time_point now() _NOEXCEPT; 1567}; 1568 1569typedef steady_clock high_resolution_clock; 1570#else 1571typedef system_clock high_resolution_clock; 1572#endif 1573 1574} // chrono 1575 1576#if _LIBCPP_STD_VER > 11 1577// Suffixes for duration literals [time.duration.literals] 1578inline namespace literals 1579{ 1580 inline namespace chrono_literals 1581 { 1582 1583 constexpr chrono::hours operator""h(unsigned long long __h) 1584 { 1585 return chrono::hours(static_cast<chrono::hours::rep>(__h)); 1586 } 1587 1588 constexpr chrono::duration<long double, ratio<3600,1>> operator""h(long double __h) 1589 { 1590 return chrono::duration<long double, ratio<3600,1>>(__h); 1591 } 1592 1593 1594 constexpr chrono::minutes operator""min(unsigned long long __m) 1595 { 1596 return chrono::minutes(static_cast<chrono::minutes::rep>(__m)); 1597 } 1598 1599 constexpr chrono::duration<long double, ratio<60,1>> operator""min(long double __m) 1600 { 1601 return chrono::duration<long double, ratio<60,1>> (__m); 1602 } 1603 1604 1605 constexpr chrono::seconds operator""s(unsigned long long __s) 1606 { 1607 return chrono::seconds(static_cast<chrono::seconds::rep>(__s)); 1608 } 1609 1610 constexpr chrono::duration<long double> operator""s(long double __s) 1611 { 1612 return chrono::duration<long double> (__s); 1613 } 1614 1615 1616 constexpr chrono::milliseconds operator""ms(unsigned long long __ms) 1617 { 1618 return chrono::milliseconds(static_cast<chrono::milliseconds::rep>(__ms)); 1619 } 1620 1621 constexpr chrono::duration<long double, milli> operator""ms(long double __ms) 1622 { 1623 return chrono::duration<long double, milli>(__ms); 1624 } 1625 1626 1627 constexpr chrono::microseconds operator""us(unsigned long long __us) 1628 { 1629 return chrono::microseconds(static_cast<chrono::microseconds::rep>(__us)); 1630 } 1631 1632 constexpr chrono::duration<long double, micro> operator""us(long double __us) 1633 { 1634 return chrono::duration<long double, micro> (__us); 1635 } 1636 1637 1638 constexpr chrono::nanoseconds operator""ns(unsigned long long __ns) 1639 { 1640 return chrono::nanoseconds(static_cast<chrono::nanoseconds::rep>(__ns)); 1641 } 1642 1643 constexpr chrono::duration<long double, nano> operator""ns(long double __ns) 1644 { 1645 return chrono::duration<long double, nano> (__ns); 1646 } 1647 1648}} 1649 1650namespace chrono { // hoist the literals into namespace std::chrono 1651 using namespace literals::chrono_literals; 1652} 1653 1654#endif 1655 1656_LIBCPP_END_NAMESPACE_STD 1657 1658_LIBCPP_POP_MACROS 1659 1660#endif // _LIBCPP_CHRONO 1661