2 //===---------------------------- chrono ----------------------------------===//
4 // The LLVM Compiler Infrastructure
6 // This file is dual licensed under the MIT and the University of Illinois Open
7 // Source Licenses. See LICENSE.TXT for details.
9 //===----------------------------------------------------------------------===//
11 #ifndef _LIBCPP_CHRONO
12 #define _LIBCPP_CHRONO
22 template <class ToDuration, class Rep, class Period>
25 duration_cast(const duration<Rep, Period>& fd);
27 template <class Rep> struct treat_as_floating_point : is_floating_point<Rep> {};
29 template <class Rep> inline constexpr bool treat_as_floating_point_v
30 = treat_as_floating_point<Rep>::value; // C++17
33 struct duration_values
36 static constexpr Rep zero();
37 static constexpr Rep max();
38 static constexpr Rep min();
43 template <class Rep, class Period = ratio<1>>
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");
51 typedef typename _Period::type period;
53 constexpr duration() = default;
55 constexpr explicit duration(const Rep2& r,
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)
64 template <class Rep2, class Period2>
65 constexpr duration(const duration<Rep2, Period2>& d,
68 treat_as_floating_point<rep>::value ||
69 ratio_divide<Period2, period>::type::den == 1
74 constexpr rep count() const;
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);
85 constexpr duration& operator+=(const duration& d);
86 constexpr duration& operator-=(const duration& d);
88 duration& operator*=(const rep& rhs);
89 duration& operator/=(const rep& rhs);
93 static constexpr duration zero();
94 static constexpr duration min();
95 static constexpr duration max();
98 typedef duration<long long, nano> nanoseconds;
99 typedef duration<long long, micro> microseconds;
100 typedef duration<long long, milli> milliseconds;
101 typedef duration<long long > seconds;
102 typedef duration< long, ratio< 60> > minutes;
103 typedef duration< long, ratio<3600> > hours;
105 template <class Clock, class Duration = typename Clock::duration>
110 typedef Duration duration;
111 typedef typename duration::rep rep;
112 typedef typename duration::period period;
114 duration d_; // exposition only
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
121 template <class Duration2>
122 time_point(const time_point<clock, Duration2>& t); // constexpr in C++14
126 duration time_since_epoch() const; // constexpr in C++14
130 time_point& operator+=(const duration& d);
131 time_point& operator-=(const duration& d);
135 static constexpr time_point min();
136 static constexpr time_point max();
141 // common_type traits
142 template <class Rep1, class Period1, class Rep2, class Period2>
143 struct common_type<chrono::duration<Rep1, Period1>, chrono::duration<Rep2, Period2>>;
145 template <class Clock, class Duration1, class Duration2>
146 struct common_type<chrono::time_point<Clock, Duration1>, chrono::time_point<Clock, Duration2>>;
151 template<class T> struct is_clock; // C++20
152 template<class T> inline constexpr bool is_clock_v = is_clock<T>::value; // C++20
155 // duration arithmetic
156 template <class Rep1, class Period1, class Rep2, class Period2>
158 typename common_type<duration<Rep1, Period1>, duration<Rep2, Period2>>::type
159 operator+(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
160 template <class Rep1, class Period1, class Rep2, class Period2>
162 typename common_type<duration<Rep1, Period1>, duration<Rep2, Period2>>::type
163 operator-(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
164 template <class Rep1, class Period, class Rep2>
166 duration<typename common_type<Rep1, Rep2>::type, Period>
167 operator*(const duration<Rep1, Period>& d, const Rep2& s);
168 template <class Rep1, class Period, class Rep2>
170 duration<typename common_type<Rep1, Rep2>::type, Period>
171 operator*(const Rep1& s, const duration<Rep2, Period>& d);
172 template <class Rep1, class Period, class Rep2>
174 duration<typename common_type<Rep1, Rep2>::type, Period>
175 operator/(const duration<Rep1, Period>& d, const Rep2& s);
176 template <class Rep1, class Period1, class Rep2, class Period2>
178 typename common_type<Rep1, Rep2>::type
179 operator/(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
181 // duration comparisons
182 template <class Rep1, class Period1, class Rep2, class Period2>
184 bool operator==(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
185 template <class Rep1, class Period1, class Rep2, class Period2>
187 bool operator!=(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
188 template <class Rep1, class Period1, class Rep2, class Period2>
190 bool operator< (const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
191 template <class Rep1, class Period1, class Rep2, class Period2>
193 bool operator<=(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
194 template <class Rep1, class Period1, class Rep2, class Period2>
196 bool operator> (const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
197 template <class Rep1, class Period1, class Rep2, class Period2>
199 bool operator>=(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
202 template <class ToDuration, class Rep, class Period>
203 ToDuration duration_cast(const duration<Rep, Period>& d);
205 template <class ToDuration, class Rep, class Period>
206 constexpr ToDuration floor(const duration<Rep, Period>& d); // C++17
207 template <class ToDuration, class Rep, class Period>
208 constexpr ToDuration ceil(const duration<Rep, Period>& d); // C++17
209 template <class ToDuration, class Rep, class Period>
210 constexpr ToDuration round(const duration<Rep, Period>& d); // C++17
212 // duration I/O is elsewhere
214 // time_point arithmetic (all constexpr in C++14)
215 template <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);
218 template <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);
221 template <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);
224 template <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);
228 // time_point comparisons (all constexpr in C++14)
229 template <class Clock, class Duration1, class Duration2>
230 bool operator==(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
231 template <class Clock, class Duration1, class Duration2>
232 bool operator!=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
233 template <class Clock, class Duration1, class Duration2>
234 bool operator< (const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
235 template <class Clock, class Duration1, class Duration2>
236 bool operator<=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
237 template <class Clock, class Duration1, class Duration2>
238 bool operator> (const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
239 template <class Clock, class Duration1, class Duration2>
240 bool operator>=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
242 // time_point_cast (constexpr in C++14)
244 template <class ToDuration, class Clock, class Duration>
245 time_point<Clock, ToDuration> time_point_cast(const time_point<Clock, Duration>& t);
247 template <class ToDuration, class Clock, class Duration>
248 constexpr time_point<Clock, ToDuration>
249 floor(const time_point<Clock, Duration>& tp); // C++17
251 template <class ToDuration, class Clock, class Duration>
252 constexpr time_point<Clock, ToDuration>
253 ceil(const time_point<Clock, Duration>& tp); // C++17
255 template <class ToDuration, class Clock, class Duration>
256 constexpr time_point<Clock, ToDuration>
257 round(const time_point<Clock, Duration>& tp); // C++17
259 template <class Rep, class Period>
260 constexpr duration<Rep, Period> abs(duration<Rep, Period> d); // C++17
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
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;
278 template <class Duration>
279 using sys_time = time_point<system_clock, Duration>; // C++20
280 using sys_seconds = sys_time<seconds>; // C++20
281 using sys_days = sys_time<days>; // C++20
283 class utc_clock; // C++20
285 template <class Duration>
286 using utc_time = time_point<utc_clock, Duration>; // C++20
287 using utc_seconds = utc_time<seconds>; // C++20
289 class tai_clock; // C++20
291 template <class Duration>
292 using tai_time = time_point<tai_clock, Duration>; // C++20
293 using tai_seconds = tai_time<seconds>; // C++20
295 class file_clock; // C++20
297 template<class Duration>
298 using file_time = time_point<file_clock, Duration>; // C++20
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
309 static time_point now() noexcept;
312 typedef steady_clock high_resolution_clock;
314 // 25.7.8, local time // C++20
316 template<class Duration>
317 using local_time = time_point<local_t, Duration>;
318 using local_seconds = local_time<seconds>;
319 using local_days = local_time<days>;
321 // 25.7.9, time_point conversions template<class DestClock, class SourceClock> // C++20
322 struct clock_time_conversion;
324 template<class DestClock, class SourceClock, class Duration>
325 auto clock_cast(const time_point<SourceClock, Duration>& t);
327 // 25.8.2, class last_spec // C++20
330 // 25.8.3, class day // C++20
333 constexpr bool operator==(const day& x, const day& y) noexcept;
334 constexpr bool operator!=(const day& x, const day& y) noexcept;
335 constexpr bool operator< (const day& x, const day& y) noexcept;
336 constexpr bool operator> (const day& x, const day& y) noexcept;
337 constexpr bool operator<=(const day& x, const day& y) noexcept;
338 constexpr bool operator>=(const day& x, const day& y) noexcept;
339 constexpr day operator+(const day& x, const days& y) noexcept;
340 constexpr day operator+(const days& x, const day& y) noexcept;
341 constexpr day operator-(const day& x, const days& y) noexcept;
342 constexpr days operator-(const day& x, const day& y) noexcept;
344 // 25.8.4, class month // C++20
346 constexpr bool operator==(const month& x, const month& y) noexcept;
347 constexpr bool operator!=(const month& x, const month& y) noexcept;
348 constexpr bool operator< (const month& x, const month& y) noexcept;
349 constexpr bool operator> (const month& x, const month& y) noexcept;
350 constexpr bool operator<=(const month& x, const month& y) noexcept;
351 constexpr bool operator>=(const month& x, const month& y) noexcept;
352 constexpr month operator+(const month& x, const months& y) noexcept;
353 constexpr month operator+(const months& x, const month& y) noexcept;
354 constexpr month operator-(const month& x, const months& y) noexcept;
355 constexpr months operator-(const month& x, const month& y) noexcept;
357 // 25.8.5, class year // C++20
359 constexpr bool operator==(const year& x, const year& y) noexcept;
360 constexpr bool operator!=(const year& x, const year& y) noexcept;
361 constexpr bool operator< (const year& x, const year& y) noexcept;
362 constexpr bool operator> (const year& x, const year& y) noexcept;
363 constexpr bool operator<=(const year& x, const year& y) noexcept;
364 constexpr bool operator>=(const year& x, const year& y) noexcept;
365 constexpr year operator+(const year& x, const years& y) noexcept;
366 constexpr year operator+(const years& x, const year& y) noexcept;
367 constexpr year operator-(const year& x, const years& y) noexcept;
368 constexpr years operator-(const year& x, const year& y) noexcept;
370 // 25.8.6, class weekday // C++20
373 constexpr bool operator==(const weekday& x, const weekday& y) noexcept;
374 constexpr bool operator!=(const weekday& x, const weekday& y) noexcept;
375 constexpr weekday operator+(const weekday& x, const days& y) noexcept;
376 constexpr weekday operator+(const days& x, const weekday& y) noexcept;
377 constexpr weekday operator-(const weekday& x, const days& y) noexcept;
378 constexpr days operator-(const weekday& x, const weekday& y) noexcept;
380 // 25.8.7, class weekday_indexed // C++20
382 class weekday_indexed;
383 constexpr bool operator==(const weekday_indexed& x, const weekday_indexed& y) noexcept;
384 constexpr bool operator!=(const weekday_indexed& x, const weekday_indexed& y) noexcept;
386 // 25.8.8, class weekday_last // C++20
389 constexpr bool operator==(const weekday_last& x, const weekday_last& y) noexcept;
390 constexpr bool operator!=(const weekday_last& x, const weekday_last& y) noexcept;
392 // 25.8.9, class month_day // C++20
395 constexpr bool operator==(const month_day& x, const month_day& y) noexcept;
396 constexpr bool operator!=(const month_day& x, const month_day& y) noexcept;
397 constexpr bool operator< (const month_day& x, const month_day& y) noexcept;
398 constexpr bool operator> (const month_day& x, const month_day& y) noexcept;
399 constexpr bool operator<=(const month_day& x, const month_day& y) noexcept;
400 constexpr bool operator>=(const month_day& x, const month_day& y) noexcept;
403 // 25.8.10, class month_day_last // C++20
404 class month_day_last;
406 constexpr bool operator==(const month_day_last& x, const month_day_last& y) noexcept;
407 constexpr bool operator!=(const month_day_last& x, const month_day_last& y) noexcept;
408 constexpr bool operator< (const month_day_last& x, const month_day_last& y) noexcept;
409 constexpr bool operator> (const month_day_last& x, const month_day_last& y) noexcept;
410 constexpr bool operator<=(const month_day_last& x, const month_day_last& y) noexcept;
411 constexpr bool operator>=(const month_day_last& x, const month_day_last& y) noexcept;
413 // 25.8.11, class month_weekday // C++20
416 constexpr bool operator==(const month_weekday& x, const month_weekday& y) noexcept;
417 constexpr bool operator!=(const month_weekday& x, const month_weekday& y) noexcept;
419 // 25.8.12, class month_weekday_last // C++20
420 class month_weekday_last;
422 constexpr bool operator==(const month_weekday_last& x, const month_weekday_last& y) noexcept;
423 constexpr bool operator!=(const month_weekday_last& x, const month_weekday_last& y) noexcept;
426 // 25.8.13, class year_month // C++20
429 constexpr bool operator==(const year_month& x, const year_month& y) noexcept;
430 constexpr bool operator!=(const year_month& x, const year_month& y) noexcept;
431 constexpr bool operator< (const year_month& x, const year_month& y) noexcept;
432 constexpr bool operator> (const year_month& x, const year_month& y) noexcept;
433 constexpr bool operator<=(const year_month& x, const year_month& y) noexcept;
434 constexpr bool operator>=(const year_month& x, const year_month& y) noexcept;
436 constexpr year_month operator+(const year_month& ym, const months& dm) noexcept;
437 constexpr year_month operator+(const months& dm, const year_month& ym) noexcept;
438 constexpr year_month operator-(const year_month& ym, const months& dm) noexcept;
439 constexpr months operator-(const year_month& x, const year_month& y) noexcept;
440 constexpr year_month operator+(const year_month& ym, const years& dy) noexcept;
441 constexpr year_month operator+(const years& dy, const year_month& ym) noexcept;
442 constexpr year_month operator-(const year_month& ym, const years& dy) noexcept;
444 // 25.8.14, class year_month_day class // C++20
447 constexpr bool operator==(const year_month_day& x, const year_month_day& y) noexcept;
448 constexpr bool operator!=(const year_month_day& x, const year_month_day& y) noexcept;
449 constexpr bool operator< (const year_month_day& x, const year_month_day& y) noexcept;
450 constexpr bool operator> (const year_month_day& x, const year_month_day& y) noexcept;
451 constexpr bool operator<=(const year_month_day& x, const year_month_day& y) noexcept;
452 constexpr bool operator>=(const year_month_day& x, const year_month_day& y) noexcept;
454 constexpr year_month_day operator+(const year_month_day& ymd, const months& dm) noexcept;
455 constexpr year_month_day operator+(const months& dm, const year_month_day& ymd) noexcept;
456 constexpr year_month_day operator+(const year_month_day& ymd, const years& dy) noexcept;
457 constexpr year_month_day operator+(const years& dy, const year_month_day& ymd) noexcept;
458 constexpr year_month_day operator-(const year_month_day& ymd, const months& dm) noexcept;
459 constexpr year_month_day operator-(const year_month_day& ymd, const years& dy) noexcept;
462 // 25.8.15, class year_month_day_last // C++20
463 class year_month_day_last;
465 constexpr bool operator==(const year_month_day_last& x,
466 const year_month_day_last& y) noexcept;
467 constexpr bool operator!=(const year_month_day_last& x,
468 const year_month_day_last& y) noexcept;
469 constexpr bool operator< (const year_month_day_last& x,
470 const year_month_day_last& y) noexcept;
471 constexpr bool operator> (const year_month_day_last& x,
472 const year_month_day_last& y) noexcept;
473 constexpr bool operator<=(const year_month_day_last& x,
474 const year_month_day_last& y) noexcept;
475 constexpr bool operator>=(const year_month_day_last& x,
476 const year_month_day_last& y) noexcept;
478 constexpr year_month_day_last
479 operator+(const year_month_day_last& ymdl, const months& dm) noexcept;
480 constexpr year_month_day_last
481 operator+(const months& dm, const year_month_day_last& ymdl) noexcept;
482 constexpr year_month_day_last
483 operator+(const year_month_day_last& ymdl, const years& dy) noexcept;
484 constexpr year_month_day_last
485 operator+(const years& dy, const year_month_day_last& ymdl) noexcept;
486 constexpr year_month_day_last
487 operator-(const year_month_day_last& ymdl, const months& dm) noexcept;
488 constexpr year_month_day_last
489 operator-(const year_month_day_last& ymdl, const years& dy) noexcept;
491 // 25.8.16, class year_month_weekday // C++20
492 class year_month_weekday;
494 constexpr bool operator==(const year_month_weekday& x,
495 const year_month_weekday& y) noexcept;
496 constexpr bool operator!=(const year_month_weekday& x,
497 const year_month_weekday& y) noexcept;
499 constexpr year_month_weekday
500 operator+(const year_month_weekday& ymwd, const months& dm) noexcept;
501 constexpr year_month_weekday
502 operator+(const months& dm, const year_month_weekday& ymwd) noexcept;
503 constexpr year_month_weekday
504 operator+(const year_month_weekday& ymwd, const years& dy) noexcept;
505 constexpr year_month_weekday
506 operator+(const years& dy, const year_month_weekday& ymwd) noexcept;
507 constexpr year_month_weekday
508 operator-(const year_month_weekday& ymwd, const months& dm) noexcept;
509 constexpr year_month_weekday
510 operator-(const year_month_weekday& ymwd, const years& dy) noexcept;
512 // 25.8.17, class year_month_weekday_last // C++20
513 class year_month_weekday_last;
515 constexpr bool operator==(const year_month_weekday_last& x,
516 const year_month_weekday_last& y) noexcept;
517 constexpr bool operator!=(const year_month_weekday_last& x,
518 const year_month_weekday_last& y) noexcept;
519 constexpr year_month_weekday_last
520 operator+(const year_month_weekday_last& ymwdl, const months& dm) noexcept;
521 constexpr year_month_weekday_last
522 operator+(const months& dm, const year_month_weekday_last& ymwdl) noexcept;
523 constexpr year_month_weekday_last
524 operator+(const year_month_weekday_last& ymwdl, const years& dy) noexcept;
525 constexpr year_month_weekday_last
526 operator+(const years& dy, const year_month_weekday_last& ymwdl) noexcept;
527 constexpr year_month_weekday_last
528 operator-(const year_month_weekday_last& ymwdl, const months& dm) noexcept;
529 constexpr year_month_weekday_last
530 operator-(const year_month_weekday_last& ymwdl, const years& dy) noexcept;
532 // 25.8.18, civil calendar conventional syntax operators // C++20
534 operator/(const year& y, const month& m) noexcept;
536 operator/(const year& y, int m) noexcept;
538 operator/(const month& m, const day& d) noexcept;
540 operator/(const month& m, int d) noexcept;
542 operator/(int m, const day& d) noexcept;
544 operator/(const day& d, const month& m) noexcept;
546 operator/(const day& d, int m) noexcept;
547 constexpr month_day_last
548 operator/(const month& m, last_spec) noexcept;
549 constexpr month_day_last
550 operator/(int m, last_spec) noexcept;
551 constexpr month_day_last
552 operator/(last_spec, const month& m) noexcept;
553 constexpr month_day_last
554 operator/(last_spec, int m) noexcept;
555 constexpr month_weekday
556 operator/(const month& m, const weekday_indexed& wdi) noexcept;
557 constexpr month_weekday
558 operator/(int m, const weekday_indexed& wdi) noexcept;
559 constexpr month_weekday
560 operator/(const weekday_indexed& wdi, const month& m) noexcept;
561 constexpr month_weekday
562 operator/(const weekday_indexed& wdi, int m) noexcept;
563 constexpr month_weekday_last
564 operator/(const month& m, const weekday_last& wdl) noexcept;
565 constexpr month_weekday_last
566 operator/(int m, const weekday_last& wdl) noexcept;
567 constexpr month_weekday_last
568 operator/(const weekday_last& wdl, const month& m) noexcept;
569 constexpr month_weekday_last
570 operator/(const weekday_last& wdl, int m) noexcept;
571 constexpr year_month_day
572 operator/(const year_month& ym, const day& d) noexcept;
573 constexpr year_month_day
574 operator/(const year_month& ym, int d) noexcept;
575 constexpr year_month_day
576 operator/(const year& y, const month_day& md) noexcept;
577 constexpr year_month_day
578 operator/(int y, const month_day& md) noexcept;
579 constexpr year_month_day
580 operator/(const month_day& md, const year& y) noexcept;
581 constexpr year_month_day
582 operator/(const month_day& md, int y) noexcept;
583 constexpr year_month_day_last
584 operator/(const year_month& ym, last_spec) noexcept;
585 constexpr year_month_day_last
586 operator/(const year& y, const month_day_last& mdl) noexcept;
587 constexpr year_month_day_last
588 operator/(int y, const month_day_last& mdl) noexcept;
589 constexpr year_month_day_last
590 operator/(const month_day_last& mdl, const year& y) noexcept;
591 constexpr year_month_day_last
592 operator/(const month_day_last& mdl, int y) noexcept;
593 constexpr year_month_weekday
594 operator/(const year_month& ym, const weekday_indexed& wdi) noexcept;
595 constexpr year_month_weekday
596 operator/(const year& y, const month_weekday& mwd) noexcept;
597 constexpr year_month_weekday
598 operator/(int y, const month_weekday& mwd) noexcept;
599 constexpr year_month_weekday
600 operator/(const month_weekday& mwd, const year& y) noexcept;
601 constexpr year_month_weekday
602 operator/(const month_weekday& mwd, int y) noexcept;
603 constexpr year_month_weekday_last
604 operator/(const year_month& ym, const weekday_last& wdl) noexcept;
605 constexpr year_month_weekday_last
606 operator/(const year& y, const month_weekday_last& mwdl) noexcept;
607 constexpr year_month_weekday_last
608 operator/(int y, const month_weekday_last& mwdl) noexcept;
609 constexpr year_month_weekday_last
610 operator/(const month_weekday_last& mwdl, const year& y) noexcept;
611 constexpr year_month_weekday_last
612 operator/(const month_weekday_last& mwdl, int y) noexcept;
614 // 25.9, class template time_of_day // C++20
615 template<class Duration> class time_of_day;
617 template<> class time_of_day<hours>;
618 template<> class time_of_day<minutes>;
619 template<> class time_of_day<seconds>;
620 template<class Rep, class Period> class time_of_day<duration<Rep, Period>>;
622 // 25.10.2, time zone database // C++20
626 // 25.10.2.3, time zone database access // C++20
627 const tzdb& get_tzdb();
628 tzdb_list& get_tzdb_list();
629 const time_zone* locate_zone(string_view tz_name);
630 const time_zone* current_zone();
632 // 25.10.2.4, remote time zone database support // C++20
633 const tzdb& reload_tzdb();
634 string remote_version();
636 // 25.10.3, exception classes // C++20
637 class nonexistent_local_time;
638 class ambiguous_local_time;
640 // 25.10.4, information classes // C++20
644 // 25.10.5, class time_zone // C++20
645 enum class choose {earliest, latest};
647 bool operator==(const time_zone& x, const time_zone& y) noexcept;
648 bool operator!=(const time_zone& x, const time_zone& y) noexcept;
649 bool operator<(const time_zone& x, const time_zone& y) noexcept;
650 bool operator>(const time_zone& x, const time_zone& y) noexcept;
651 bool operator<=(const time_zone& x, const time_zone& y) noexcept;
652 bool operator>=(const time_zone& x, const time_zone& y) noexcept;
654 // 25.10.6, class template zoned_traits // C++20
655 template<class T> struct zoned_traits;
657 // 25.10.7, class template zoned_time // C++20
658 template<class Duration, class TimeZonePtr = const time_zone*> class zoned_time;
659 using zoned_seconds = zoned_time<seconds>;
661 template<class Duration1, class Duration2, class TimeZonePtr>
662 bool operator==(const zoned_time<Duration1, TimeZonePtr>& x,
663 const zoned_time<Duration2, TimeZonePtr>& y);
664 template<class Duration1, class Duration2, class TimeZonePtr>
665 bool operator!=(const zoned_time<Duration1, TimeZonePtr>& x,
666 const zoned_time<Duration2, TimeZonePtr>& y);
668 // 25.10.8, leap second support // C++20
671 bool operator==(const leap& x, const leap& y);
672 bool operator!=(const leap& x, const leap& y);
673 bool operator< (const leap& x, const leap& y);
674 bool operator> (const leap& x, const leap& y);
675 bool operator<=(const leap& x, const leap& y);
676 bool operator>=(const leap& x, const leap& y);
677 template<class Duration>
678 bool operator==(const leap& x, const sys_time<Duration>& y);
679 template<class Duration>
680 bool operator==(const sys_time<Duration>& x, const leap& y);
681 template<class Duration>
682 bool operator!=(const leap& x, const sys_time<Duration>& y);
683 template<class Duration>
684 bool operator!=(const sys_time<Duration>& x, const leap& y);
685 template<class Duration>
686 bool operator< (const leap& x, const sys_time<Duration>& y);
687 template<class Duration>
688 bool operator< (const sys_time<Duration>& x, const leap& y);
689 template<class Duration>
690 bool operator> (const leap& x, const sys_time<Duration>& y);
691 template<class Duration>
692 bool operator> (const sys_time<Duration>& x, const leap& y);
693 template<class Duration>
694 bool operator<=(const leap& x, const sys_time<Duration>& y);
695 template<class Duration>
696 bool operator<=(const sys_time<Duration>& x, const leap& y);
697 template<class Duration>
698 bool operator>=(const leap& x, const sys_time<Duration>& y);
699 template<class Duration>
700 bool operator>=(const sys_time<Duration>& x, const leap& y);
702 // 25.10.9, class link // C++20
704 bool operator==(const link& x, const link& y);
705 bool operator!=(const link& x, const link& y);
706 bool operator< (const link& x, const link& y);
707 bool operator> (const link& x, const link& y);
708 bool operator<=(const link& x, const link& y);
709 bool operator>=(const link& x, const link& y);
711 // 25.11, formatting // C++20
712 template<class charT, class Streamable>
714 format(const charT* fmt, const Streamable& s);
716 template<class charT, class Streamable>
718 format(const locale& loc, const charT* fmt, const Streamable& s);
720 template<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);
724 template<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);
729 // 25.12, parsing // C++20
730 template<class charT, class traits, class Alloc, class Parsable>
732 parse(const basic_string<charT, traits, Alloc>& format, Parsable& tp);
734 template<class charT, class traits, class Alloc, class Parsable>
736 parse(const basic_string<charT, traits, Alloc>& format, Parsable& tp,
737 basic_string<charT, traits, Alloc>& abbrev);
739 template<class charT, class traits, class Alloc, class Parsable>
741 parse(const basic_string<charT, traits, Alloc>& format, Parsable& tp,
744 template<class charT, class traits, class Alloc, class Parsable>
746 parse(const basic_string<charT, traits, Alloc>& format, Parsable& tp,
747 basic_string<charT, traits, Alloc>& abbrev, minutes& offset);
749 inline constexpr last_spec last{}; // C++20
750 inline constexpr chrono::weekday Sunday{0}; // C++20
751 inline constexpr chrono::weekday Monday{1}; // C++20
752 inline constexpr chrono::weekday Tuesday{2}; // C++20
753 inline constexpr chrono::weekday Wednesday{3}; // C++20
754 inline constexpr chrono::weekday Thursday{4}; // C++20
755 inline constexpr chrono::weekday Friday{5}; // C++20
756 inline constexpr chrono::weekday Saturday{6}; // C++20
758 inline constexpr chrono::month January{1}; // C++20
759 inline constexpr chrono::month February{2}; // C++20
760 inline constexpr chrono::month March{3}; // C++20
761 inline constexpr chrono::month April{4}; // C++20
762 inline constexpr chrono::month May{5}; // C++20
763 inline constexpr chrono::month June{6}; // C++20
764 inline constexpr chrono::month July{7}; // C++20
765 inline constexpr chrono::month August{8}; // C++20
766 inline constexpr chrono::month September{9}; // C++20
767 inline constexpr chrono::month October{10}; // C++20
768 inline constexpr chrono::month November{11}; // C++20
769 inline constexpr chrono::month December{12}; // C++20
772 inline namespace literals {
773 inline namespace chrono_literals {
774 constexpr chrono::hours operator ""h(unsigned long long); // C++14
775 constexpr chrono::duration<unspecified , ratio<3600,1>> operator ""h(long double); // C++14
776 constexpr chrono::minutes operator ""min(unsigned long long); // C++14
777 constexpr chrono::duration<unspecified , ratio<60,1>> operator ""min(long double); // C++14
778 constexpr chrono::seconds operator ""s(unsigned long long); // C++14
779 constexpr chrono::duration<unspecified > operator ""s(long double); // C++14
780 constexpr chrono::milliseconds operator ""ms(unsigned long long); // C++14
781 constexpr chrono::duration<unspecified , milli> operator ""ms(long double); // C++14
782 constexpr chrono::microseconds operator ""us(unsigned long long); // C++14
783 constexpr chrono::duration<unspecified , micro> operator ""us(long double); // C++14
784 constexpr chrono::nanoseconds operator ""ns(unsigned long long); // C++14
785 constexpr chrono::duration<unspecified , nano> operator ""ns(long double); // C++14
786 constexpr chrono::day operator ""d(unsigned long long d) noexcept; // C++20
787 constexpr chrono::year operator ""y(unsigned long long y) noexcept; // C++20
796 #include <type_traits>
800 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
801 #pragma GCC system_header
805 #include <__undef_macros>
808 _LIBCPP_BEGIN_NAMESPACE_STD
813 template <class _Rep, class _Period = ratio<1> > class _LIBCPP_TEMPLATE_VIS duration;
816 struct __is_duration : false_type {};
818 template <class _Rep, class _Period>
819 struct __is_duration<duration<_Rep, _Period> > : true_type {};
821 template <class _Rep, class _Period>
822 struct __is_duration<const duration<_Rep, _Period> > : true_type {};
824 template <class _Rep, class _Period>
825 struct __is_duration<volatile duration<_Rep, _Period> > : true_type {};
827 template <class _Rep, class _Period>
828 struct __is_duration<const volatile duration<_Rep, _Period> > : true_type {};
832 template <class _Rep1, class _Period1, class _Rep2, class _Period2>
833 struct _LIBCPP_TEMPLATE_VIS common_type<chrono::duration<_Rep1, _Period1>,
834 chrono::duration<_Rep2, _Period2> >
836 typedef chrono::duration<typename common_type<_Rep1, _Rep2>::type,
837 typename __ratio_gcd<_Period1, _Period2>::type> type;
844 template <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>
848 struct __duration_cast;
850 template <class _FromDuration, class _ToDuration, class _Period>
851 struct __duration_cast<_FromDuration, _ToDuration, _Period, true, true>
853 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
854 _ToDuration operator()(const _FromDuration& __fd) const
856 return _ToDuration(static_cast<typename _ToDuration::rep>(__fd.count()));
860 template <class _FromDuration, class _ToDuration, class _Period>
861 struct __duration_cast<_FromDuration, _ToDuration, _Period, true, false>
863 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
864 _ToDuration operator()(const _FromDuration& __fd) const
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)));
872 template <class _FromDuration, class _ToDuration, class _Period>
873 struct __duration_cast<_FromDuration, _ToDuration, _Period, false, true>
875 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
876 _ToDuration operator()(const _FromDuration& __fd) const
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)));
884 template <class _FromDuration, class _ToDuration, class _Period>
885 struct __duration_cast<_FromDuration, _ToDuration, _Period, false, false>
887 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
888 _ToDuration operator()(const _FromDuration& __fd) const
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)));
897 template <class _ToDuration, class _Rep, class _Period>
898 inline _LIBCPP_INLINE_VISIBILITY
902 __is_duration<_ToDuration>::value,
905 duration_cast(const duration<_Rep, _Period>& __fd)
907 return __duration_cast<duration<_Rep, _Period>, _ToDuration>()(__fd);
910 template <class _Rep>
911 struct _LIBCPP_TEMPLATE_VIS treat_as_floating_point : is_floating_point<_Rep> {};
913 #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
914 template <class _Rep>
915 _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool treat_as_floating_point_v
916 = treat_as_floating_point<_Rep>::value;
919 template <class _Rep>
920 struct _LIBCPP_TEMPLATE_VIS duration_values
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();}
928 #if _LIBCPP_STD_VER > 14
929 template <class _ToDuration, class _Rep, class _Period>
930 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
933 __is_duration<_ToDuration>::value,
936 floor(const duration<_Rep, _Period>& __d)
938 _ToDuration __t = duration_cast<_ToDuration>(__d);
940 __t = __t - _ToDuration{1};
944 template <class _ToDuration, class _Rep, class _Period>
945 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
948 __is_duration<_ToDuration>::value,
951 ceil(const duration<_Rep, _Period>& __d)
953 _ToDuration __t = duration_cast<_ToDuration>(__d);
955 __t = __t + _ToDuration{1};
959 template <class _ToDuration, class _Rep, class _Period>
960 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
963 __is_duration<_ToDuration>::value,
966 round(const duration<_Rep, _Period>& __d)
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)
974 if (__lowerDiff > __upperDiff)
976 return __lower.count() & 1 ? __upper : __lower;
982 template <class _Rep, class _Period>
983 class _LIBCPP_TEMPLATE_VIS duration
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");
989 template <class _R1, class _R2>
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);
1001 template <intmax_t _Xp, intmax_t _Yp, bool __overflow>
1002 struct __mul // __overflow == false
1004 static const intmax_t value = _Xp * _Yp;
1007 template <intmax_t _Xp, intmax_t _Yp>
1008 struct __mul<_Xp, _Yp, true>
1010 static const intmax_t value = 1;
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;
1021 typedef typename _Period::type period;
1026 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1027 #ifndef _LIBCPP_CXX03_LANG
1028 duration() = default;
1033 template <class _Rep2>
1034 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1035 explicit duration(const _Rep2& __r,
1038 is_convertible<_Rep2, rep>::value &&
1039 (treat_as_floating_point<rep>::value ||
1040 !treat_as_floating_point<_Rep2>::value)
1045 template <class _Rep2, class _Period2>
1046 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1047 duration(const duration<_Rep2, _Period2>& __d,
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))
1055 : __rep_(_VSTD::chrono::duration_cast<duration>(__d).count()) {}
1059 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR rep count() const {return __rep_;}
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_--);}
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;}
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;}
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());}
1085 typedef duration<long long, nano> nanoseconds;
1086 typedef duration<long long, micro> microseconds;
1087 typedef duration<long long, milli> milliseconds;
1088 typedef duration<long long > seconds;
1089 typedef duration< long, ratio< 60> > minutes;
1090 typedef duration< long, ratio<3600> > hours;
1094 template <class _LhsDuration, class _RhsDuration>
1095 struct __duration_eq
1097 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1098 bool operator()(const _LhsDuration& __lhs, const _RhsDuration& __rhs) const
1100 typedef typename common_type<_LhsDuration, _RhsDuration>::type _Ct;
1101 return _Ct(__lhs).count() == _Ct(__rhs).count();
1105 template <class _LhsDuration>
1106 struct __duration_eq<_LhsDuration, _LhsDuration>
1108 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1109 bool operator()(const _LhsDuration& __lhs, const _LhsDuration& __rhs) const
1110 {return __lhs.count() == __rhs.count();}
1113 template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1114 inline _LIBCPP_INLINE_VISIBILITY
1117 operator==(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1119 return __duration_eq<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >()(__lhs, __rhs);
1124 template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1125 inline _LIBCPP_INLINE_VISIBILITY
1128 operator!=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1130 return !(__lhs == __rhs);
1135 template <class _LhsDuration, class _RhsDuration>
1136 struct __duration_lt
1138 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1139 bool operator()(const _LhsDuration& __lhs, const _RhsDuration& __rhs) const
1141 typedef typename common_type<_LhsDuration, _RhsDuration>::type _Ct;
1142 return _Ct(__lhs).count() < _Ct(__rhs).count();
1146 template <class _LhsDuration>
1147 struct __duration_lt<_LhsDuration, _LhsDuration>
1149 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1150 bool operator()(const _LhsDuration& __lhs, const _LhsDuration& __rhs) const
1151 {return __lhs.count() < __rhs.count();}
1154 template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1155 inline _LIBCPP_INLINE_VISIBILITY
1158 operator< (const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1160 return __duration_lt<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >()(__lhs, __rhs);
1165 template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1166 inline _LIBCPP_INLINE_VISIBILITY
1169 operator> (const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1171 return __rhs < __lhs;
1176 template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1177 inline _LIBCPP_INLINE_VISIBILITY
1180 operator<=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1182 return !(__rhs < __lhs);
1187 template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1188 inline _LIBCPP_INLINE_VISIBILITY
1191 operator>=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1193 return !(__lhs < __rhs);
1198 template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1199 inline _LIBCPP_INLINE_VISIBILITY
1201 typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type
1202 operator+(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1204 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Cd;
1205 return _Cd(_Cd(__lhs).count() + _Cd(__rhs).count());
1210 template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1211 inline _LIBCPP_INLINE_VISIBILITY
1213 typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type
1214 operator-(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1216 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Cd;
1217 return _Cd(_Cd(__lhs).count() - _Cd(__rhs).count());
1222 template <class _Rep1, class _Period, class _Rep2>
1223 inline _LIBCPP_INLINE_VISIBILITY
1227 is_convertible<_Rep2, typename common_type<_Rep1, _Rep2>::type>::value,
1228 duration<typename common_type<_Rep1, _Rep2>::type, _Period>
1230 operator*(const duration<_Rep1, _Period>& __d, const _Rep2& __s)
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));
1237 template <class _Rep1, class _Period, class _Rep2>
1238 inline _LIBCPP_INLINE_VISIBILITY
1242 is_convertible<_Rep1, typename common_type<_Rep1, _Rep2>::type>::value,
1243 duration<typename common_type<_Rep1, _Rep2>::type, _Period>
1245 operator*(const _Rep1& __s, const duration<_Rep2, _Period>& __d)
1252 template <class _Duration, class _Rep, bool = __is_duration<_Rep>::value>
1253 struct __duration_divide_result
1257 template <class _Duration, class _Rep2,
1258 bool = is_convertible<_Rep2,
1259 typename common_type<typename _Duration::rep, _Rep2>::type>::value>
1260 struct __duration_divide_imp
1264 template <class _Rep1, class _Period, class _Rep2>
1265 struct __duration_divide_imp<duration<_Rep1, _Period>, _Rep2, true>
1267 typedef duration<typename common_type<_Rep1, _Rep2>::type, _Period> type;
1270 template <class _Rep1, class _Period, class _Rep2>
1271 struct __duration_divide_result<duration<_Rep1, _Period>, _Rep2, false>
1272 : __duration_divide_imp<duration<_Rep1, _Period>, _Rep2>
1276 template <class _Rep1, class _Period, class _Rep2>
1277 inline _LIBCPP_INLINE_VISIBILITY
1279 typename __duration_divide_result<duration<_Rep1, _Period>, _Rep2>::type
1280 operator/(const duration<_Rep1, _Period>& __d, const _Rep2& __s)
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));
1287 template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1288 inline _LIBCPP_INLINE_VISIBILITY
1290 typename common_type<_Rep1, _Rep2>::type
1291 operator/(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1293 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Ct;
1294 return _Ct(__lhs).count() / _Ct(__rhs).count();
1299 template <class _Rep1, class _Period, class _Rep2>
1300 inline _LIBCPP_INLINE_VISIBILITY
1302 typename __duration_divide_result<duration<_Rep1, _Period>, _Rep2>::type
1303 operator%(const duration<_Rep1, _Period>& __d, const _Rep2& __s)
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));
1310 template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1311 inline _LIBCPP_INLINE_VISIBILITY
1313 typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type
1314 operator%(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
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()));
1321 //////////////////////////////////////////////////////////
1322 ///////////////////// time_point /////////////////////////
1323 //////////////////////////////////////////////////////////
1325 template <class _Clock, class _Duration = typename _Clock::duration>
1326 class _LIBCPP_TEMPLATE_VIS time_point
1328 static_assert(__is_duration<_Duration>::value,
1329 "Second template parameter of time_point must be a std::chrono::duration");
1331 typedef _Clock clock;
1332 typedef _Duration duration;
1333 typedef typename duration::rep rep;
1334 typedef typename duration::period period;
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) {}
1343 template <class _Duration2>
1344 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1345 time_point(const time_point<clock, _Duration2>& t,
1348 is_convertible<_Duration2, duration>::value
1350 : __d_(t.time_since_epoch()) {}
1354 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 duration time_since_epoch() const {return __d_;}
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;}
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());}
1369 template <class _Clock, class _Duration1, class _Duration2>
1370 struct _LIBCPP_TEMPLATE_VIS common_type<chrono::time_point<_Clock, _Duration1>,
1371 chrono::time_point<_Clock, _Duration2> >
1373 typedef chrono::time_point<_Clock, typename common_type<_Duration1, _Duration2>::type> type;
1378 template <class _ToDuration, class _Clock, class _Duration>
1379 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1380 time_point<_Clock, _ToDuration>
1381 time_point_cast(const time_point<_Clock, _Duration>& __t)
1383 return time_point<_Clock, _ToDuration>(_VSTD::chrono::duration_cast<_ToDuration>(__t.time_since_epoch()));
1386 #if _LIBCPP_STD_VER > 14
1387 template <class _ToDuration, class _Clock, class _Duration>
1388 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1391 __is_duration<_ToDuration>::value,
1392 time_point<_Clock, _ToDuration>
1394 floor(const time_point<_Clock, _Duration>& __t)
1396 return time_point<_Clock, _ToDuration>{floor<_ToDuration>(__t.time_since_epoch())};
1399 template <class _ToDuration, class _Clock, class _Duration>
1400 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1403 __is_duration<_ToDuration>::value,
1404 time_point<_Clock, _ToDuration>
1406 ceil(const time_point<_Clock, _Duration>& __t)
1408 return time_point<_Clock, _ToDuration>{ceil<_ToDuration>(__t.time_since_epoch())};
1411 template <class _ToDuration, class _Clock, class _Duration>
1412 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1415 __is_duration<_ToDuration>::value,
1416 time_point<_Clock, _ToDuration>
1418 round(const time_point<_Clock, _Duration>& __t)
1420 return time_point<_Clock, _ToDuration>{round<_ToDuration>(__t.time_since_epoch())};
1423 template <class _Rep, class _Period>
1424 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1427 numeric_limits<_Rep>::is_signed,
1428 duration<_Rep, _Period>
1430 abs(duration<_Rep, _Period> __d)
1432 return __d >= __d.zero() ? __d : -__d;
1438 template <class _Clock, class _Duration1, class _Duration2>
1439 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1441 operator==(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs)
1443 return __lhs.time_since_epoch() == __rhs.time_since_epoch();
1448 template <class _Clock, class _Duration1, class _Duration2>
1449 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1451 operator!=(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs)
1453 return !(__lhs == __rhs);
1458 template <class _Clock, class _Duration1, class _Duration2>
1459 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1461 operator<(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs)
1463 return __lhs.time_since_epoch() < __rhs.time_since_epoch();
1468 template <class _Clock, class _Duration1, class _Duration2>
1469 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1471 operator>(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs)
1473 return __rhs < __lhs;
1478 template <class _Clock, class _Duration1, class _Duration2>
1479 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1481 operator<=(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs)
1483 return !(__rhs < __lhs);
1488 template <class _Clock, class _Duration1, class _Duration2>
1489 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1491 operator>=(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs)
1493 return !(__lhs < __rhs);
1496 // time_point operator+(time_point x, duration y);
1498 template <class _Clock, class _Duration1, class _Rep2, class _Period2>
1499 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1500 time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type>
1501 operator+(const time_point<_Clock, _Duration1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1503 typedef time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type> _Tr;
1504 return _Tr (__lhs.time_since_epoch() + __rhs);
1507 // time_point operator+(duration x, time_point y);
1509 template <class _Rep1, class _Period1, class _Clock, class _Duration2>
1510 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1511 time_point<_Clock, typename common_type<duration<_Rep1, _Period1>, _Duration2>::type>
1512 operator+(const duration<_Rep1, _Period1>& __lhs, const time_point<_Clock, _Duration2>& __rhs)
1514 return __rhs + __lhs;
1517 // time_point operator-(time_point x, duration y);
1519 template <class _Clock, class _Duration1, class _Rep2, class _Period2>
1520 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1521 time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type>
1522 operator-(const time_point<_Clock, _Duration1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1524 typedef time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type> _Ret;
1525 return _Ret(__lhs.time_since_epoch() -__rhs);
1528 // duration operator-(time_point x, time_point y);
1530 template <class _Clock, class _Duration1, class _Duration2>
1531 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1532 typename common_type<_Duration1, _Duration2>::type
1533 operator-(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs)
1535 return __lhs.time_since_epoch() - __rhs.time_since_epoch();
1538 //////////////////////////////////////////////////////////
1539 /////////////////////// clocks ///////////////////////////
1540 //////////////////////////////////////////////////////////
1542 class _LIBCPP_TYPE_VIS system_clock
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;
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;
1556 #ifndef _LIBCPP_HAS_NO_MONOTONIC_CLOCK
1557 class _LIBCPP_TYPE_VIS steady_clock
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;
1566 static time_point now() _NOEXCEPT;
1569 typedef steady_clock high_resolution_clock;
1571 typedef system_clock high_resolution_clock;
1576 #if _LIBCPP_STD_VER > 11
1577 // Suffixes for duration literals [time.duration.literals]
1578 inline namespace literals
1580 inline namespace chrono_literals
1583 constexpr chrono::hours operator""h(unsigned long long __h)
1585 return chrono::hours(static_cast<chrono::hours::rep>(__h));
1588 constexpr chrono::duration<long double, ratio<3600,1>> operator""h(long double __h)
1590 return chrono::duration<long double, ratio<3600,1>>(__h);
1594 constexpr chrono::minutes operator""min(unsigned long long __m)
1596 return chrono::minutes(static_cast<chrono::minutes::rep>(__m));
1599 constexpr chrono::duration<long double, ratio<60,1>> operator""min(long double __m)
1601 return chrono::duration<long double, ratio<60,1>> (__m);
1605 constexpr chrono::seconds operator""s(unsigned long long __s)
1607 return chrono::seconds(static_cast<chrono::seconds::rep>(__s));
1610 constexpr chrono::duration<long double> operator""s(long double __s)
1612 return chrono::duration<long double> (__s);
1616 constexpr chrono::milliseconds operator""ms(unsigned long long __ms)
1618 return chrono::milliseconds(static_cast<chrono::milliseconds::rep>(__ms));
1621 constexpr chrono::duration<long double, milli> operator""ms(long double __ms)
1623 return chrono::duration<long double, milli>(__ms);
1627 constexpr chrono::microseconds operator""us(unsigned long long __us)
1629 return chrono::microseconds(static_cast<chrono::microseconds::rep>(__us));
1632 constexpr chrono::duration<long double, micro> operator""us(long double __us)
1634 return chrono::duration<long double, micro> (__us);
1638 constexpr chrono::nanoseconds operator""ns(unsigned long long __ns)
1640 return chrono::nanoseconds(static_cast<chrono::nanoseconds::rep>(__ns));
1643 constexpr chrono::duration<long double, nano> operator""ns(long double __ns)
1645 return chrono::duration<long double, nano> (__ns);
1650 namespace chrono { // hoist the literals into namespace std::chrono
1651 using namespace literals::chrono_literals;
1656 _LIBCPP_END_NAMESPACE_STD
1660 #endif // _LIBCPP_CHRONO