2 //===---------------------------- chrono ----------------------------------===//
4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5 // See https://llvm.org/LICENSE.txt for license information.
6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
8 //===----------------------------------------------------------------------===//
10 #ifndef _LIBCPP_CHRONO
11 #define _LIBCPP_CHRONO
21 template <class ToDuration, class Rep, class Period>
24 duration_cast(const duration<Rep, Period>& fd);
26 template <class Rep> struct treat_as_floating_point : is_floating_point<Rep> {};
28 template <class Rep> inline constexpr bool treat_as_floating_point_v
29 = treat_as_floating_point<Rep>::value; // C++17
32 struct duration_values
35 static constexpr Rep zero(); // noexcept in C++20
36 static constexpr Rep max(); // noexcept in C++20
37 static constexpr Rep min(); // noexcept in C++20
42 template <class Rep, class Period = ratio<1>>
45 static_assert(!__is_duration<Rep>::value, "A duration representation can not be a duration");
46 static_assert(__is_ratio<Period>::value, "Second template parameter of duration must be a std::ratio");
47 static_assert(Period::num > 0, "duration period must be positive");
50 typedef typename _Period::type period;
52 constexpr duration() = default;
54 constexpr explicit duration(const Rep2& r,
57 is_convertible<Rep2, rep>::value &&
58 (treat_as_floating_point<rep>::value ||
59 !treat_as_floating_point<rep>::value && !treat_as_floating_point<Rep2>::value)
63 template <class Rep2, class Period2>
64 constexpr duration(const duration<Rep2, Period2>& d,
67 treat_as_floating_point<rep>::value ||
68 ratio_divide<Period2, period>::type::den == 1
73 constexpr rep count() const;
77 constexpr common_type<duration>::type operator+() const;
78 constexpr common_type<duration>::type operator-() const;
79 constexpr duration& operator++(); // constexpr in C++17
80 constexpr duration operator++(int); // constexpr in C++17
81 constexpr duration& operator--(); // constexpr in C++17
82 constexpr duration operator--(int); // constexpr in C++17
84 constexpr duration& operator+=(const duration& d); // constexpr in C++17
85 constexpr duration& operator-=(const duration& d); // constexpr in C++17
87 duration& operator*=(const rep& rhs); // constexpr in C++17
88 duration& operator/=(const rep& rhs); // constexpr in C++17
89 duration& operator%=(const rep& rhs); // constexpr in C++17
90 duration& operator%=(const duration& rhs); // constexpr in C++17
94 static constexpr duration zero(); // noexcept in C++20
95 static constexpr duration min(); // noexcept in C++20
96 static constexpr duration max(); // noexcept in C++20
99 typedef duration<long long, nano> nanoseconds;
100 typedef duration<long long, micro> microseconds;
101 typedef duration<long long, milli> milliseconds;
102 typedef duration<long long > seconds;
103 typedef duration< long, ratio< 60> > minutes;
104 typedef duration< long, ratio<3600> > hours;
106 template <class Clock, class Duration = typename Clock::duration>
111 typedef Duration duration;
112 typedef typename duration::rep rep;
113 typedef typename duration::period period;
115 duration d_; // exposition only
118 time_point(); // has value "epoch" // constexpr in C++14
119 explicit time_point(const duration& d); // same as time_point() + d // constexpr in C++14
122 template <class Duration2>
123 time_point(const time_point<clock, Duration2>& t); // constexpr in C++14
127 duration time_since_epoch() const; // constexpr in C++14
131 time_point& operator+=(const duration& d); // constexpr in C++17
132 time_point& operator-=(const duration& d); // constexpr in C++17
136 static constexpr time_point min(); // noexcept in C++20
137 static constexpr time_point max(); // noexcept in C++20
142 // common_type traits
143 template <class Rep1, class Period1, class Rep2, class Period2>
144 struct common_type<chrono::duration<Rep1, Period1>, chrono::duration<Rep2, Period2>>;
146 template <class Clock, class Duration1, class Duration2>
147 struct common_type<chrono::time_point<Clock, Duration1>, chrono::time_point<Clock, Duration2>>;
152 template<class T> struct is_clock; // C++20
153 template<class T> inline constexpr bool is_clock_v = is_clock<T>::value; // C++20
156 // duration arithmetic
157 template <class Rep1, class Period1, class Rep2, class Period2>
159 typename common_type<duration<Rep1, Period1>, duration<Rep2, Period2>>::type
160 operator+(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
161 template <class Rep1, class Period1, class Rep2, class Period2>
163 typename common_type<duration<Rep1, Period1>, duration<Rep2, Period2>>::type
164 operator-(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
165 template <class Rep1, class Period, class Rep2>
167 duration<typename common_type<Rep1, Rep2>::type, Period>
168 operator*(const duration<Rep1, Period>& d, const Rep2& s);
169 template <class Rep1, class Period, class Rep2>
171 duration<typename common_type<Rep1, Rep2>::type, Period>
172 operator*(const Rep1& s, const duration<Rep2, Period>& d);
173 template <class Rep1, class Period, class Rep2>
175 duration<typename common_type<Rep1, Rep2>::type, Period>
176 operator/(const duration<Rep1, Period>& d, const Rep2& s);
177 template <class Rep1, class Period1, class Rep2, class Period2>
179 typename common_type<Rep1, Rep2>::type
180 operator/(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
182 // duration comparisons
183 template <class Rep1, class Period1, class Rep2, class Period2>
185 bool operator==(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
186 template <class Rep1, class Period1, class Rep2, class Period2>
188 bool operator!=(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
189 template <class Rep1, class Period1, class Rep2, class Period2>
191 bool operator< (const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
192 template <class Rep1, class Period1, class Rep2, class Period2>
194 bool operator<=(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
195 template <class Rep1, class Period1, class Rep2, class Period2>
197 bool operator> (const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
198 template <class Rep1, class Period1, class Rep2, class Period2>
200 bool operator>=(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
203 template <class ToDuration, class Rep, class Period>
204 ToDuration duration_cast(const duration<Rep, Period>& d);
206 template <class ToDuration, class Rep, class Period>
207 constexpr ToDuration floor(const duration<Rep, Period>& d); // C++17
208 template <class ToDuration, class Rep, class Period>
209 constexpr ToDuration ceil(const duration<Rep, Period>& d); // C++17
210 template <class ToDuration, class Rep, class Period>
211 constexpr ToDuration round(const duration<Rep, Period>& d); // C++17
213 // duration I/O is elsewhere
215 // time_point arithmetic (all constexpr in C++14)
216 template <class Clock, class Duration1, class Rep2, class Period2>
217 time_point<Clock, typename common_type<Duration1, duration<Rep2, Period2>>::type>
218 operator+(const time_point<Clock, Duration1>& lhs, const duration<Rep2, Period2>& rhs);
219 template <class Rep1, class Period1, class Clock, class Duration2>
220 time_point<Clock, typename common_type<duration<Rep1, Period1>, Duration2>::type>
221 operator+(const duration<Rep1, Period1>& lhs, const time_point<Clock, Duration2>& rhs);
222 template <class Clock, class Duration1, class Rep2, class Period2>
223 time_point<Clock, typename common_type<Duration1, duration<Rep2, Period2>>::type>
224 operator-(const time_point<Clock, Duration1>& lhs, const duration<Rep2, Period2>& rhs);
225 template <class Clock, class Duration1, class Duration2>
226 typename common_type<Duration1, Duration2>::type
227 operator-(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
229 // time_point comparisons (all constexpr in C++14)
230 template <class Clock, class Duration1, class Duration2>
231 bool operator==(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
232 template <class Clock, class Duration1, class Duration2>
233 bool operator!=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
234 template <class Clock, class Duration1, class Duration2>
235 bool operator< (const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
236 template <class Clock, class Duration1, class Duration2>
237 bool operator<=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
238 template <class Clock, class Duration1, class Duration2>
239 bool operator> (const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
240 template <class Clock, class Duration1, class Duration2>
241 bool operator>=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
243 // time_point_cast (constexpr in C++14)
245 template <class ToDuration, class Clock, class Duration>
246 time_point<Clock, ToDuration> time_point_cast(const time_point<Clock, Duration>& t);
248 template <class ToDuration, class Clock, class Duration>
249 constexpr time_point<Clock, ToDuration>
250 floor(const time_point<Clock, Duration>& tp); // C++17
252 template <class ToDuration, class Clock, class Duration>
253 constexpr time_point<Clock, ToDuration>
254 ceil(const time_point<Clock, Duration>& tp); // C++17
256 template <class ToDuration, class Clock, class Duration>
257 constexpr time_point<Clock, ToDuration>
258 round(const time_point<Clock, Duration>& tp); // C++17
260 template <class Rep, class Period>
261 constexpr duration<Rep, Period> abs(duration<Rep, Period> d); // C++17
268 typedef microseconds duration;
269 typedef duration::rep rep;
270 typedef duration::period period;
271 typedef chrono::time_point<system_clock> time_point;
272 static const bool is_steady = false; // constexpr in C++14
274 static time_point now() noexcept;
275 static time_t to_time_t (const time_point& __t) noexcept;
276 static time_point from_time_t(time_t __t) noexcept;
279 template <class Duration>
280 using sys_time = time_point<system_clock, Duration>; // C++20
281 using sys_seconds = sys_time<seconds>; // C++20
282 using sys_days = sys_time<days>; // C++20
284 class utc_clock; // C++20
286 template <class Duration>
287 using utc_time = time_point<utc_clock, Duration>; // C++20
288 using utc_seconds = utc_time<seconds>; // C++20
290 class tai_clock; // C++20
292 template <class Duration>
293 using tai_time = time_point<tai_clock, Duration>; // C++20
294 using tai_seconds = tai_time<seconds>; // C++20
296 class file_clock; // C++20
298 template<class Duration>
299 using file_time = time_point<file_clock, Duration>; // C++20
304 typedef nanoseconds duration;
305 typedef duration::rep rep;
306 typedef duration::period period;
307 typedef chrono::time_point<steady_clock, duration> time_point;
308 static const bool is_steady = true; // constexpr in C++14
310 static time_point now() noexcept;
313 typedef steady_clock high_resolution_clock;
315 // 25.7.8, local time // C++20
317 template<class Duration>
318 using local_time = time_point<local_t, Duration>;
319 using local_seconds = local_time<seconds>;
320 using local_days = local_time<days>;
322 // 25.7.9, time_point conversions template<class DestClock, class SourceClock> // C++20
323 struct clock_time_conversion;
325 template<class DestClock, class SourceClock, class Duration>
326 auto clock_cast(const time_point<SourceClock, Duration>& t);
328 // 25.8.2, class last_spec // C++20
331 // 25.8.3, class day // C++20
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 bool operator>=(const day& x, const day& y) noexcept;
340 constexpr day operator+(const day& x, const days& y) noexcept;
341 constexpr day operator+(const days& x, const day& y) noexcept;
342 constexpr day operator-(const day& x, const days& y) noexcept;
343 constexpr days operator-(const day& x, const day& y) noexcept;
345 // 25.8.4, class month // C++20
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 bool operator>=(const month& x, const month& y) noexcept;
353 constexpr month operator+(const month& x, const months& y) noexcept;
354 constexpr month operator+(const months& x, const month& y) noexcept;
355 constexpr month operator-(const month& x, const months& y) noexcept;
356 constexpr months operator-(const month& x, const month& y) noexcept;
358 // 25.8.5, class year // C++20
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 bool operator>=(const year& x, const year& y) noexcept;
366 constexpr year operator+(const year& x, const years& y) noexcept;
367 constexpr year operator+(const years& x, const year& y) noexcept;
368 constexpr year operator-(const year& x, const years& y) noexcept;
369 constexpr years operator-(const year& x, const year& y) noexcept;
371 // 25.8.6, class weekday // C++20
374 constexpr bool operator==(const weekday& x, const weekday& y) noexcept;
375 constexpr bool operator!=(const weekday& x, const weekday& y) noexcept;
376 constexpr weekday operator+(const weekday& x, const days& y) noexcept;
377 constexpr weekday operator+(const days& x, const weekday& y) noexcept;
378 constexpr weekday operator-(const weekday& x, const days& y) noexcept;
379 constexpr days operator-(const weekday& x, const weekday& y) noexcept;
381 // 25.8.7, class weekday_indexed // C++20
383 class weekday_indexed;
384 constexpr bool operator==(const weekday_indexed& x, const weekday_indexed& y) noexcept;
385 constexpr bool operator!=(const weekday_indexed& x, const weekday_indexed& y) noexcept;
387 // 25.8.8, class weekday_last // C++20
390 constexpr bool operator==(const weekday_last& x, const weekday_last& y) noexcept;
391 constexpr bool operator!=(const weekday_last& x, const weekday_last& y) noexcept;
393 // 25.8.9, class month_day // C++20
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;
401 constexpr bool operator>=(const month_day& x, const month_day& y) noexcept;
404 // 25.8.10, class month_day_last // C++20
405 class month_day_last;
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;
412 constexpr bool operator>=(const month_day_last& x, const month_day_last& y) noexcept;
414 // 25.8.11, class month_weekday // C++20
417 constexpr bool operator==(const month_weekday& x, const month_weekday& y) noexcept;
418 constexpr bool operator!=(const month_weekday& x, const month_weekday& y) noexcept;
420 // 25.8.12, class month_weekday_last // C++20
421 class month_weekday_last;
423 constexpr bool operator==(const month_weekday_last& x, const month_weekday_last& y) noexcept;
424 constexpr bool operator!=(const month_weekday_last& x, const month_weekday_last& y) noexcept;
427 // 25.8.13, class year_month // C++20
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;
435 constexpr bool operator>=(const year_month& x, const year_month& y) noexcept;
437 constexpr year_month operator+(const year_month& ym, const months& dm) noexcept;
438 constexpr year_month operator+(const months& dm, const year_month& ym) noexcept;
439 constexpr year_month operator-(const year_month& ym, const months& dm) noexcept;
440 constexpr months operator-(const year_month& x, const year_month& y) noexcept;
441 constexpr year_month operator+(const year_month& ym, const years& dy) noexcept;
442 constexpr year_month operator+(const years& dy, const year_month& ym) noexcept;
443 constexpr year_month operator-(const year_month& ym, const years& dy) noexcept;
445 // 25.8.14, class year_month_day class // C++20
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;
453 constexpr bool operator>=(const year_month_day& x, const year_month_day& y) noexcept;
455 constexpr year_month_day operator+(const year_month_day& ymd, const months& dm) noexcept;
456 constexpr year_month_day operator+(const months& dm, const year_month_day& ymd) noexcept;
457 constexpr year_month_day operator+(const year_month_day& ymd, const years& dy) noexcept;
458 constexpr year_month_day operator+(const years& dy, const year_month_day& ymd) noexcept;
459 constexpr year_month_day operator-(const year_month_day& ymd, const months& dm) noexcept;
460 constexpr year_month_day operator-(const year_month_day& ymd, const years& dy) noexcept;
463 // 25.8.15, class year_month_day_last // C++20
464 class year_month_day_last;
466 constexpr bool operator==(const year_month_day_last& x,
467 const year_month_day_last& y) noexcept;
468 constexpr bool operator!=(const year_month_day_last& x,
469 const year_month_day_last& y) noexcept;
470 constexpr bool operator< (const year_month_day_last& x,
471 const year_month_day_last& y) noexcept;
472 constexpr bool operator> (const year_month_day_last& x,
473 const year_month_day_last& y) noexcept;
474 constexpr bool operator<=(const year_month_day_last& x,
475 const year_month_day_last& y) noexcept;
476 constexpr bool operator>=(const year_month_day_last& x,
477 const year_month_day_last& y) noexcept;
479 constexpr year_month_day_last
480 operator+(const year_month_day_last& ymdl, const months& dm) noexcept;
481 constexpr year_month_day_last
482 operator+(const months& dm, const year_month_day_last& ymdl) noexcept;
483 constexpr year_month_day_last
484 operator+(const year_month_day_last& ymdl, const years& dy) noexcept;
485 constexpr year_month_day_last
486 operator+(const years& dy, const year_month_day_last& ymdl) noexcept;
487 constexpr year_month_day_last
488 operator-(const year_month_day_last& ymdl, const months& dm) noexcept;
489 constexpr year_month_day_last
490 operator-(const year_month_day_last& ymdl, const years& dy) noexcept;
492 // 25.8.16, class year_month_weekday // C++20
493 class year_month_weekday;
495 constexpr bool operator==(const year_month_weekday& x,
496 const year_month_weekday& y) noexcept;
497 constexpr bool operator!=(const year_month_weekday& x,
498 const year_month_weekday& y) noexcept;
500 constexpr year_month_weekday
501 operator+(const year_month_weekday& ymwd, const months& dm) noexcept;
502 constexpr year_month_weekday
503 operator+(const months& dm, const year_month_weekday& ymwd) noexcept;
504 constexpr year_month_weekday
505 operator+(const year_month_weekday& ymwd, const years& dy) noexcept;
506 constexpr year_month_weekday
507 operator+(const years& dy, const year_month_weekday& ymwd) noexcept;
508 constexpr year_month_weekday
509 operator-(const year_month_weekday& ymwd, const months& dm) noexcept;
510 constexpr year_month_weekday
511 operator-(const year_month_weekday& ymwd, const years& dy) noexcept;
513 // 25.8.17, class year_month_weekday_last // C++20
514 class year_month_weekday_last;
516 constexpr bool operator==(const year_month_weekday_last& x,
517 const year_month_weekday_last& y) noexcept;
518 constexpr bool operator!=(const year_month_weekday_last& x,
519 const year_month_weekday_last& y) noexcept;
520 constexpr year_month_weekday_last
521 operator+(const year_month_weekday_last& ymwdl, const months& dm) noexcept;
522 constexpr year_month_weekday_last
523 operator+(const months& dm, const year_month_weekday_last& ymwdl) noexcept;
524 constexpr year_month_weekday_last
525 operator+(const year_month_weekday_last& ymwdl, const years& dy) noexcept;
526 constexpr year_month_weekday_last
527 operator+(const years& dy, const year_month_weekday_last& ymwdl) noexcept;
528 constexpr year_month_weekday_last
529 operator-(const year_month_weekday_last& ymwdl, const months& dm) noexcept;
530 constexpr year_month_weekday_last
531 operator-(const year_month_weekday_last& ymwdl, const years& dy) noexcept;
533 // 25.8.18, civil calendar conventional syntax operators // C++20
535 operator/(const year& y, const month& m) noexcept;
537 operator/(const year& y, int m) noexcept;
539 operator/(const month& m, const day& d) noexcept;
541 operator/(const month& m, int d) noexcept;
543 operator/(int m, const day& d) noexcept;
545 operator/(const day& d, const month& m) noexcept;
547 operator/(const day& d, int m) noexcept;
548 constexpr month_day_last
549 operator/(const month& m, last_spec) noexcept;
550 constexpr month_day_last
551 operator/(int m, last_spec) noexcept;
552 constexpr month_day_last
553 operator/(last_spec, const month& m) noexcept;
554 constexpr month_day_last
555 operator/(last_spec, int m) noexcept;
556 constexpr month_weekday
557 operator/(const month& m, const weekday_indexed& wdi) noexcept;
558 constexpr month_weekday
559 operator/(int m, const weekday_indexed& wdi) noexcept;
560 constexpr month_weekday
561 operator/(const weekday_indexed& wdi, const month& m) noexcept;
562 constexpr month_weekday
563 operator/(const weekday_indexed& wdi, int m) noexcept;
564 constexpr month_weekday_last
565 operator/(const month& m, const weekday_last& wdl) noexcept;
566 constexpr month_weekday_last
567 operator/(int m, const weekday_last& wdl) noexcept;
568 constexpr month_weekday_last
569 operator/(const weekday_last& wdl, const month& m) noexcept;
570 constexpr month_weekday_last
571 operator/(const weekday_last& wdl, int m) noexcept;
572 constexpr year_month_day
573 operator/(const year_month& ym, const day& d) noexcept;
574 constexpr year_month_day
575 operator/(const year_month& ym, int d) noexcept;
576 constexpr year_month_day
577 operator/(const year& y, const month_day& md) noexcept;
578 constexpr year_month_day
579 operator/(int y, const month_day& md) noexcept;
580 constexpr year_month_day
581 operator/(const month_day& md, const year& y) noexcept;
582 constexpr year_month_day
583 operator/(const month_day& md, int y) noexcept;
584 constexpr year_month_day_last
585 operator/(const year_month& ym, last_spec) noexcept;
586 constexpr year_month_day_last
587 operator/(const year& y, const month_day_last& mdl) noexcept;
588 constexpr year_month_day_last
589 operator/(int y, const month_day_last& mdl) noexcept;
590 constexpr year_month_day_last
591 operator/(const month_day_last& mdl, const year& y) noexcept;
592 constexpr year_month_day_last
593 operator/(const month_day_last& mdl, int y) noexcept;
594 constexpr year_month_weekday
595 operator/(const year_month& ym, const weekday_indexed& wdi) noexcept;
596 constexpr year_month_weekday
597 operator/(const year& y, const month_weekday& mwd) noexcept;
598 constexpr year_month_weekday
599 operator/(int y, const month_weekday& mwd) noexcept;
600 constexpr year_month_weekday
601 operator/(const month_weekday& mwd, const year& y) noexcept;
602 constexpr year_month_weekday
603 operator/(const month_weekday& mwd, int y) noexcept;
604 constexpr year_month_weekday_last
605 operator/(const year_month& ym, const weekday_last& wdl) noexcept;
606 constexpr year_month_weekday_last
607 operator/(const year& y, const month_weekday_last& mwdl) noexcept;
608 constexpr year_month_weekday_last
609 operator/(int y, const month_weekday_last& mwdl) noexcept;
610 constexpr year_month_weekday_last
611 operator/(const month_weekday_last& mwdl, const year& y) noexcept;
612 constexpr year_month_weekday_last
613 operator/(const month_weekday_last& mwdl, int y) noexcept;
615 // 26.9, class template hh_mm_ss
616 template <class Duration>
619 bool is_neg; // exposition only
620 chrono::hours h; // exposition only
621 chrono::minutes m; // exposition only
622 chrono::seconds s; // exposition only
623 precision ss; // exposition only
626 static unsigned constexpr fractional_width = see below;
627 using precision = see below;
629 constexpr hh_mm_ss() noexcept : hh_mm_ss{Duration::zero()} {}
630 constexpr explicit hh_mm_ss(Duration d) noexcept;
632 constexpr bool is_negative() const noexcept;
633 constexpr chrono::hours hours() const noexcept;
634 constexpr chrono::minutes minutes() const noexcept;
635 constexpr chrono::seconds seconds() const noexcept;
636 constexpr precision subseconds() const noexcept;
638 constexpr explicit operator precision() const noexcept;
639 constexpr precision to_duration() const noexcept;
642 template <class charT, class traits, class Duration>
643 basic_ostream<charT, traits>&
644 operator<<(basic_ostream<charT, traits>& os, hh_mm_ss<Duration> const& hms);
646 // 26.10, 12/24 hour functions
647 constexpr bool is_am(hours const& h) noexcept;
648 constexpr bool is_pm(hours const& h) noexcept;
649 constexpr hours make12(const hours& h) noexcept;
650 constexpr hours make24(const hours& h, bool is_pm) noexcept;
653 // 25.10.2, time zone database // C++20
657 // 25.10.2.3, time zone database access // C++20
658 const tzdb& get_tzdb();
659 tzdb_list& get_tzdb_list();
660 const time_zone* locate_zone(string_view tz_name);
661 const time_zone* current_zone();
663 // 25.10.2.4, remote time zone database support // C++20
664 const tzdb& reload_tzdb();
665 string remote_version();
667 // 25.10.3, exception classes // C++20
668 class nonexistent_local_time;
669 class ambiguous_local_time;
671 // 25.10.4, information classes // C++20
675 // 25.10.5, class time_zone // C++20
676 enum class choose {earliest, latest};
678 bool operator==(const time_zone& x, const time_zone& y) noexcept;
679 bool operator!=(const time_zone& x, const time_zone& y) noexcept;
680 bool operator<(const time_zone& x, const time_zone& y) noexcept;
681 bool operator>(const time_zone& x, const time_zone& y) noexcept;
682 bool operator<=(const time_zone& x, const time_zone& y) noexcept;
683 bool operator>=(const time_zone& x, const time_zone& y) noexcept;
685 // 25.10.6, class template zoned_traits // C++20
686 template<class T> struct zoned_traits;
688 // 25.10.7, class template zoned_time // C++20
689 template<class Duration, class TimeZonePtr = const time_zone*> class zoned_time;
690 using zoned_seconds = zoned_time<seconds>;
692 template<class Duration1, class Duration2, class TimeZonePtr>
693 bool operator==(const zoned_time<Duration1, TimeZonePtr>& x,
694 const zoned_time<Duration2, TimeZonePtr>& y);
695 template<class Duration1, class Duration2, class TimeZonePtr>
696 bool operator!=(const zoned_time<Duration1, TimeZonePtr>& x,
697 const zoned_time<Duration2, TimeZonePtr>& y);
699 // 25.10.8, leap second support // C++20
702 bool operator==(const leap& x, const leap& y);
703 bool operator!=(const leap& x, const leap& y);
704 bool operator< (const leap& x, const leap& y);
705 bool operator> (const leap& x, const leap& y);
706 bool operator<=(const leap& x, const leap& y);
707 bool operator>=(const leap& x, const leap& y);
708 template<class Duration>
709 bool operator==(const leap& x, const sys_time<Duration>& y);
710 template<class Duration>
711 bool operator==(const sys_time<Duration>& x, const leap& y);
712 template<class Duration>
713 bool operator!=(const leap& x, const sys_time<Duration>& y);
714 template<class Duration>
715 bool operator!=(const sys_time<Duration>& x, const leap& y);
716 template<class Duration>
717 bool operator< (const leap& x, const sys_time<Duration>& y);
718 template<class Duration>
719 bool operator< (const sys_time<Duration>& x, const leap& y);
720 template<class Duration>
721 bool operator> (const leap& x, const sys_time<Duration>& y);
722 template<class Duration>
723 bool operator> (const sys_time<Duration>& x, const leap& y);
724 template<class Duration>
725 bool operator<=(const leap& x, const sys_time<Duration>& y);
726 template<class Duration>
727 bool operator<=(const sys_time<Duration>& x, const leap& y);
728 template<class Duration>
729 bool operator>=(const leap& x, const sys_time<Duration>& y);
730 template<class Duration>
731 bool operator>=(const sys_time<Duration>& x, const leap& y);
733 // 25.10.9, class link // C++20
735 bool operator==(const link& x, const link& y);
736 bool operator!=(const link& x, const link& y);
737 bool operator< (const link& x, const link& y);
738 bool operator> (const link& x, const link& y);
739 bool operator<=(const link& x, const link& y);
740 bool operator>=(const link& x, const link& y);
742 // 25.11, formatting // C++20
743 template<class charT, class Streamable>
745 format(const charT* fmt, const Streamable& s);
747 template<class charT, class Streamable>
749 format(const locale& loc, const charT* fmt, const Streamable& s);
751 template<class charT, class traits, class Alloc, class Streamable>
752 basic_string<charT, traits, Alloc>
753 format(const basic_string<charT, traits, Alloc>& fmt, const Streamable& s);
755 template<class charT, class traits, class Alloc, class Streamable>
756 basic_string<charT, traits, Alloc>
757 format(const locale& loc, const basic_string<charT, traits, Alloc>& fmt,
758 const Streamable& s);
760 // 25.12, parsing // C++20
761 template<class charT, class traits, class Alloc, class Parsable>
763 parse(const basic_string<charT, traits, Alloc>& format, Parsable& tp);
765 template<class charT, class traits, class Alloc, class Parsable>
767 parse(const basic_string<charT, traits, Alloc>& format, Parsable& tp,
768 basic_string<charT, traits, Alloc>& abbrev);
770 template<class charT, class traits, class Alloc, class Parsable>
772 parse(const basic_string<charT, traits, Alloc>& format, Parsable& tp,
775 template<class charT, class traits, class Alloc, class Parsable>
777 parse(const basic_string<charT, traits, Alloc>& format, Parsable& tp,
778 basic_string<charT, traits, Alloc>& abbrev, minutes& offset);
780 // calendrical constants
781 inline constexpr last_spec last{}; // C++20
782 inline constexpr chrono::weekday Sunday{0}; // C++20
783 inline constexpr chrono::weekday Monday{1}; // C++20
784 inline constexpr chrono::weekday Tuesday{2}; // C++20
785 inline constexpr chrono::weekday Wednesday{3}; // C++20
786 inline constexpr chrono::weekday Thursday{4}; // C++20
787 inline constexpr chrono::weekday Friday{5}; // C++20
788 inline constexpr chrono::weekday Saturday{6}; // C++20
790 inline constexpr chrono::month January{1}; // C++20
791 inline constexpr chrono::month February{2}; // C++20
792 inline constexpr chrono::month March{3}; // C++20
793 inline constexpr chrono::month April{4}; // C++20
794 inline constexpr chrono::month May{5}; // C++20
795 inline constexpr chrono::month June{6}; // C++20
796 inline constexpr chrono::month July{7}; // C++20
797 inline constexpr chrono::month August{8}; // C++20
798 inline constexpr chrono::month September{9}; // C++20
799 inline constexpr chrono::month October{10}; // C++20
800 inline constexpr chrono::month November{11}; // C++20
801 inline constexpr chrono::month December{12}; // C++20
804 inline namespace literals {
805 inline namespace chrono_literals {
806 constexpr chrono::hours operator ""h(unsigned long long); // C++14
807 constexpr chrono::duration<unspecified , ratio<3600,1>> operator ""h(long double); // C++14
808 constexpr chrono::minutes operator ""min(unsigned long long); // C++14
809 constexpr chrono::duration<unspecified , ratio<60,1>> operator ""min(long double); // C++14
810 constexpr chrono::seconds operator ""s(unsigned long long); // C++14
811 constexpr chrono::duration<unspecified > operator ""s(long double); // C++14
812 constexpr chrono::milliseconds operator ""ms(unsigned long long); // C++14
813 constexpr chrono::duration<unspecified , milli> operator ""ms(long double); // C++14
814 constexpr chrono::microseconds operator ""us(unsigned long long); // C++14
815 constexpr chrono::duration<unspecified , micro> operator ""us(long double); // C++14
816 constexpr chrono::nanoseconds operator ""ns(unsigned long long); // C++14
817 constexpr chrono::duration<unspecified , nano> operator ""ns(long double); // C++14
818 constexpr chrono::day operator ""d(unsigned long long d) noexcept; // C++20
819 constexpr chrono::year operator ""y(unsigned long long y) noexcept; // C++20
828 #include <type_traits>
833 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
834 #pragma GCC system_header
838 #include <__undef_macros>
840 #ifndef _LIBCPP_CXX03_LANG
841 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
842 struct _FilesystemClock;
843 _LIBCPP_END_NAMESPACE_FILESYSTEM
844 #endif // !_LIBCPP_CXX03_LANG
846 _LIBCPP_BEGIN_NAMESPACE_STD
851 template <class _Rep, class _Period = ratio<1> > class _LIBCPP_TEMPLATE_VIS duration;
854 struct __is_duration : false_type {};
856 template <class _Rep, class _Period>
857 struct __is_duration<duration<_Rep, _Period> > : true_type {};
859 template <class _Rep, class _Period>
860 struct __is_duration<const duration<_Rep, _Period> > : true_type {};
862 template <class _Rep, class _Period>
863 struct __is_duration<volatile duration<_Rep, _Period> > : true_type {};
865 template <class _Rep, class _Period>
866 struct __is_duration<const volatile duration<_Rep, _Period> > : true_type {};
870 template <class _Rep1, class _Period1, class _Rep2, class _Period2>
871 struct _LIBCPP_TEMPLATE_VIS common_type<chrono::duration<_Rep1, _Period1>,
872 chrono::duration<_Rep2, _Period2> >
874 typedef chrono::duration<typename common_type<_Rep1, _Rep2>::type,
875 typename __ratio_gcd<_Period1, _Period2>::type> type;
882 template <class _FromDuration, class _ToDuration,
883 class _Period = typename ratio_divide<typename _FromDuration::period, typename _ToDuration::period>::type,
884 bool = _Period::num == 1,
885 bool = _Period::den == 1>
886 struct __duration_cast;
888 template <class _FromDuration, class _ToDuration, class _Period>
889 struct __duration_cast<_FromDuration, _ToDuration, _Period, true, true>
891 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
892 _ToDuration operator()(const _FromDuration& __fd) const
894 return _ToDuration(static_cast<typename _ToDuration::rep>(__fd.count()));
898 template <class _FromDuration, class _ToDuration, class _Period>
899 struct __duration_cast<_FromDuration, _ToDuration, _Period, true, false>
901 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
902 _ToDuration operator()(const _FromDuration& __fd) const
904 typedef typename common_type<typename _ToDuration::rep, typename _FromDuration::rep, intmax_t>::type _Ct;
905 return _ToDuration(static_cast<typename _ToDuration::rep>(
906 static_cast<_Ct>(__fd.count()) / static_cast<_Ct>(_Period::den)));
910 template <class _FromDuration, class _ToDuration, class _Period>
911 struct __duration_cast<_FromDuration, _ToDuration, _Period, false, true>
913 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
914 _ToDuration operator()(const _FromDuration& __fd) const
916 typedef typename common_type<typename _ToDuration::rep, typename _FromDuration::rep, intmax_t>::type _Ct;
917 return _ToDuration(static_cast<typename _ToDuration::rep>(
918 static_cast<_Ct>(__fd.count()) * static_cast<_Ct>(_Period::num)));
922 template <class _FromDuration, class _ToDuration, class _Period>
923 struct __duration_cast<_FromDuration, _ToDuration, _Period, false, false>
925 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
926 _ToDuration operator()(const _FromDuration& __fd) const
928 typedef typename common_type<typename _ToDuration::rep, typename _FromDuration::rep, intmax_t>::type _Ct;
929 return _ToDuration(static_cast<typename _ToDuration::rep>(
930 static_cast<_Ct>(__fd.count()) * static_cast<_Ct>(_Period::num)
931 / static_cast<_Ct>(_Period::den)));
935 template <class _ToDuration, class _Rep, class _Period>
936 inline _LIBCPP_INLINE_VISIBILITY
940 __is_duration<_ToDuration>::value,
943 duration_cast(const duration<_Rep, _Period>& __fd)
945 return __duration_cast<duration<_Rep, _Period>, _ToDuration>()(__fd);
948 template <class _Rep>
949 struct _LIBCPP_TEMPLATE_VIS treat_as_floating_point : is_floating_point<_Rep> {};
951 #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
952 template <class _Rep>
953 _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool treat_as_floating_point_v
954 = treat_as_floating_point<_Rep>::value;
957 template <class _Rep>
958 struct _LIBCPP_TEMPLATE_VIS duration_values
961 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR _Rep zero() _NOEXCEPT {return _Rep(0);}
962 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR _Rep max() _NOEXCEPT {return numeric_limits<_Rep>::max();}
963 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR _Rep min() _NOEXCEPT {return numeric_limits<_Rep>::lowest();}
966 #if _LIBCPP_STD_VER > 14
967 template <class _ToDuration, class _Rep, class _Period>
968 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
971 __is_duration<_ToDuration>::value,
974 floor(const duration<_Rep, _Period>& __d)
976 _ToDuration __t = duration_cast<_ToDuration>(__d);
978 __t = __t - _ToDuration{1};
982 template <class _ToDuration, class _Rep, class _Period>
983 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
986 __is_duration<_ToDuration>::value,
989 ceil(const duration<_Rep, _Period>& __d)
991 _ToDuration __t = duration_cast<_ToDuration>(__d);
993 __t = __t + _ToDuration{1};
997 template <class _ToDuration, class _Rep, class _Period>
998 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1001 __is_duration<_ToDuration>::value,
1004 round(const duration<_Rep, _Period>& __d)
1006 _ToDuration __lower = floor<_ToDuration>(__d);
1007 _ToDuration __upper = __lower + _ToDuration{1};
1008 auto __lowerDiff = __d - __lower;
1009 auto __upperDiff = __upper - __d;
1010 if (__lowerDiff < __upperDiff)
1012 if (__lowerDiff > __upperDiff)
1014 return __lower.count() & 1 ? __upper : __lower;
1020 template <class _Rep, class _Period>
1021 class _LIBCPP_TEMPLATE_VIS duration
1023 static_assert(!__is_duration<_Rep>::value, "A duration representation can not be a duration");
1024 static_assert(__is_ratio<_Period>::value, "Second template parameter of duration must be a std::ratio");
1025 static_assert(_Period::num > 0, "duration period must be positive");
1027 template <class _R1, class _R2>
1028 struct __no_overflow
1031 static const intmax_t __gcd_n1_n2 = __static_gcd<_R1::num, _R2::num>::value;
1032 static const intmax_t __gcd_d1_d2 = __static_gcd<_R1::den, _R2::den>::value;
1033 static const intmax_t __n1 = _R1::num / __gcd_n1_n2;
1034 static const intmax_t __d1 = _R1::den / __gcd_d1_d2;
1035 static const intmax_t __n2 = _R2::num / __gcd_n1_n2;
1036 static const intmax_t __d2 = _R2::den / __gcd_d1_d2;
1037 static const intmax_t max = -((intmax_t(1) << (sizeof(intmax_t) * CHAR_BIT - 1)) + 1);
1039 template <intmax_t _Xp, intmax_t _Yp, bool __overflow>
1040 struct __mul // __overflow == false
1042 static const intmax_t value = _Xp * _Yp;
1045 template <intmax_t _Xp, intmax_t _Yp>
1046 struct __mul<_Xp, _Yp, true>
1048 static const intmax_t value = 1;
1052 static const bool value = (__n1 <= max / __d2) && (__n2 <= max / __d1);
1053 typedef ratio<__mul<__n1, __d2, !value>::value,
1054 __mul<__n2, __d1, !value>::value> type;
1059 typedef typename _Period::type period;
1064 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1065 #ifndef _LIBCPP_CXX03_LANG
1066 duration() = default;
1071 template <class _Rep2>
1072 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1073 explicit duration(const _Rep2& __r,
1076 is_convertible<_Rep2, rep>::value &&
1077 (treat_as_floating_point<rep>::value ||
1078 !treat_as_floating_point<_Rep2>::value)
1083 template <class _Rep2, class _Period2>
1084 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1085 duration(const duration<_Rep2, _Period2>& __d,
1088 __no_overflow<_Period2, period>::value && (
1089 treat_as_floating_point<rep>::value ||
1090 (__no_overflow<_Period2, period>::type::den == 1 &&
1091 !treat_as_floating_point<_Rep2>::value))
1093 : __rep_(_VSTD::chrono::duration_cast<duration>(__d).count()) {}
1097 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR rep count() const {return __rep_;}
1101 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR typename common_type<duration>::type operator+() const {return typename common_type<duration>::type(*this);}
1102 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR typename common_type<duration>::type operator-() const {return typename common_type<duration>::type(-__rep_);}
1103 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator++() {++__rep_; return *this;}
1104 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration operator++(int) {return duration(__rep_++);}
1105 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator--() {--__rep_; return *this;}
1106 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration operator--(int) {return duration(__rep_--);}
1108 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator+=(const duration& __d) {__rep_ += __d.count(); return *this;}
1109 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator-=(const duration& __d) {__rep_ -= __d.count(); return *this;}
1111 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator*=(const rep& rhs) {__rep_ *= rhs; return *this;}
1112 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator/=(const rep& rhs) {__rep_ /= rhs; return *this;}
1113 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator%=(const rep& rhs) {__rep_ %= rhs; return *this;}
1114 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator%=(const duration& rhs) {__rep_ %= rhs.count(); return *this;}
1118 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR duration zero() _NOEXCEPT {return duration(duration_values<rep>::zero());}
1119 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR duration min() _NOEXCEPT {return duration(duration_values<rep>::min());}
1120 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR duration max() _NOEXCEPT {return duration(duration_values<rep>::max());}
1123 typedef duration<long long, nano> nanoseconds;
1124 typedef duration<long long, micro> microseconds;
1125 typedef duration<long long, milli> milliseconds;
1126 typedef duration<long long > seconds;
1127 typedef duration< long, ratio< 60> > minutes;
1128 typedef duration< long, ratio<3600> > hours;
1129 #if _LIBCPP_STD_VER > 17
1130 typedef duration< int, ratio_multiply<ratio<24>, hours::period>> days;
1131 typedef duration< int, ratio_multiply<ratio<7>, days::period>> weeks;
1132 typedef duration< int, ratio_multiply<ratio<146097, 400>, days::period>> years;
1133 typedef duration< int, ratio_divide<years::period, ratio<12>>> months;
1137 template <class _LhsDuration, class _RhsDuration>
1138 struct __duration_eq
1140 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1141 bool operator()(const _LhsDuration& __lhs, const _RhsDuration& __rhs) const
1143 typedef typename common_type<_LhsDuration, _RhsDuration>::type _Ct;
1144 return _Ct(__lhs).count() == _Ct(__rhs).count();
1148 template <class _LhsDuration>
1149 struct __duration_eq<_LhsDuration, _LhsDuration>
1151 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1152 bool operator()(const _LhsDuration& __lhs, const _LhsDuration& __rhs) const
1153 {return __lhs.count() == __rhs.count();}
1156 template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1157 inline _LIBCPP_INLINE_VISIBILITY
1160 operator==(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1162 return __duration_eq<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >()(__lhs, __rhs);
1167 template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1168 inline _LIBCPP_INLINE_VISIBILITY
1171 operator!=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1173 return !(__lhs == __rhs);
1178 template <class _LhsDuration, class _RhsDuration>
1179 struct __duration_lt
1181 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1182 bool operator()(const _LhsDuration& __lhs, const _RhsDuration& __rhs) const
1184 typedef typename common_type<_LhsDuration, _RhsDuration>::type _Ct;
1185 return _Ct(__lhs).count() < _Ct(__rhs).count();
1189 template <class _LhsDuration>
1190 struct __duration_lt<_LhsDuration, _LhsDuration>
1192 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1193 bool operator()(const _LhsDuration& __lhs, const _LhsDuration& __rhs) const
1194 {return __lhs.count() < __rhs.count();}
1197 template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1198 inline _LIBCPP_INLINE_VISIBILITY
1201 operator< (const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1203 return __duration_lt<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >()(__lhs, __rhs);
1208 template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1209 inline _LIBCPP_INLINE_VISIBILITY
1212 operator> (const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1214 return __rhs < __lhs;
1219 template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1220 inline _LIBCPP_INLINE_VISIBILITY
1223 operator<=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1225 return !(__rhs < __lhs);
1230 template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1231 inline _LIBCPP_INLINE_VISIBILITY
1234 operator>=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1236 return !(__lhs < __rhs);
1241 template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1242 inline _LIBCPP_INLINE_VISIBILITY
1244 typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type
1245 operator+(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1247 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Cd;
1248 return _Cd(_Cd(__lhs).count() + _Cd(__rhs).count());
1253 template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1254 inline _LIBCPP_INLINE_VISIBILITY
1256 typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type
1257 operator-(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1259 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Cd;
1260 return _Cd(_Cd(__lhs).count() - _Cd(__rhs).count());
1265 template <class _Rep1, class _Period, class _Rep2>
1266 inline _LIBCPP_INLINE_VISIBILITY
1270 is_convertible<_Rep2, typename common_type<_Rep1, _Rep2>::type>::value,
1271 duration<typename common_type<_Rep1, _Rep2>::type, _Period>
1273 operator*(const duration<_Rep1, _Period>& __d, const _Rep2& __s)
1275 typedef typename common_type<_Rep1, _Rep2>::type _Cr;
1276 typedef duration<_Cr, _Period> _Cd;
1277 return _Cd(_Cd(__d).count() * static_cast<_Cr>(__s));
1280 template <class _Rep1, class _Period, class _Rep2>
1281 inline _LIBCPP_INLINE_VISIBILITY
1285 is_convertible<_Rep1, typename common_type<_Rep1, _Rep2>::type>::value,
1286 duration<typename common_type<_Rep1, _Rep2>::type, _Period>
1288 operator*(const _Rep1& __s, const duration<_Rep2, _Period>& __d)
1295 template <class _Rep1, class _Period, class _Rep2>
1296 inline _LIBCPP_INLINE_VISIBILITY
1300 !__is_duration<_Rep2>::value &&
1301 is_convertible<_Rep2, typename common_type<_Rep1, _Rep2>::type>::value,
1302 duration<typename common_type<_Rep1, _Rep2>::type, _Period>
1304 operator/(const duration<_Rep1, _Period>& __d, const _Rep2& __s)
1306 typedef typename common_type<_Rep1, _Rep2>::type _Cr;
1307 typedef duration<_Cr, _Period> _Cd;
1308 return _Cd(_Cd(__d).count() / static_cast<_Cr>(__s));
1311 template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1312 inline _LIBCPP_INLINE_VISIBILITY
1314 typename common_type<_Rep1, _Rep2>::type
1315 operator/(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1317 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Ct;
1318 return _Ct(__lhs).count() / _Ct(__rhs).count();
1323 template <class _Rep1, class _Period, class _Rep2>
1324 inline _LIBCPP_INLINE_VISIBILITY
1328 !__is_duration<_Rep2>::value &&
1329 is_convertible<_Rep2, typename common_type<_Rep1, _Rep2>::type>::value,
1330 duration<typename common_type<_Rep1, _Rep2>::type, _Period>
1332 operator%(const duration<_Rep1, _Period>& __d, const _Rep2& __s)
1334 typedef typename common_type<_Rep1, _Rep2>::type _Cr;
1335 typedef duration<_Cr, _Period> _Cd;
1336 return _Cd(_Cd(__d).count() % static_cast<_Cr>(__s));
1339 template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1340 inline _LIBCPP_INLINE_VISIBILITY
1342 typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type
1343 operator%(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1345 typedef typename common_type<_Rep1, _Rep2>::type _Cr;
1346 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Cd;
1347 return _Cd(static_cast<_Cr>(_Cd(__lhs).count()) % static_cast<_Cr>(_Cd(__rhs).count()));
1350 //////////////////////////////////////////////////////////
1351 ///////////////////// time_point /////////////////////////
1352 //////////////////////////////////////////////////////////
1354 template <class _Clock, class _Duration = typename _Clock::duration>
1355 class _LIBCPP_TEMPLATE_VIS time_point
1357 static_assert(__is_duration<_Duration>::value,
1358 "Second template parameter of time_point must be a std::chrono::duration");
1360 typedef _Clock clock;
1361 typedef _Duration duration;
1362 typedef typename duration::rep rep;
1363 typedef typename duration::period period;
1368 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 time_point() : __d_(duration::zero()) {}
1369 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 explicit time_point(const duration& __d) : __d_(__d) {}
1372 template <class _Duration2>
1373 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1374 time_point(const time_point<clock, _Duration2>& t,
1377 is_convertible<_Duration2, duration>::value
1379 : __d_(t.time_since_epoch()) {}
1383 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 duration time_since_epoch() const {return __d_;}
1387 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 time_point& operator+=(const duration& __d) {__d_ += __d; return *this;}
1388 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 time_point& operator-=(const duration& __d) {__d_ -= __d; return *this;}
1392 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR time_point min() _NOEXCEPT {return time_point(duration::min());}
1393 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR time_point max() _NOEXCEPT {return time_point(duration::max());}
1398 template <class _Clock, class _Duration1, class _Duration2>
1399 struct _LIBCPP_TEMPLATE_VIS common_type<chrono::time_point<_Clock, _Duration1>,
1400 chrono::time_point<_Clock, _Duration2> >
1402 typedef chrono::time_point<_Clock, typename common_type<_Duration1, _Duration2>::type> type;
1407 template <class _ToDuration, class _Clock, class _Duration>
1408 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1409 time_point<_Clock, _ToDuration>
1410 time_point_cast(const time_point<_Clock, _Duration>& __t)
1412 return time_point<_Clock, _ToDuration>(_VSTD::chrono::duration_cast<_ToDuration>(__t.time_since_epoch()));
1415 #if _LIBCPP_STD_VER > 14
1416 template <class _ToDuration, class _Clock, class _Duration>
1417 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1420 __is_duration<_ToDuration>::value,
1421 time_point<_Clock, _ToDuration>
1423 floor(const time_point<_Clock, _Duration>& __t)
1425 return time_point<_Clock, _ToDuration>{floor<_ToDuration>(__t.time_since_epoch())};
1428 template <class _ToDuration, class _Clock, class _Duration>
1429 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1432 __is_duration<_ToDuration>::value,
1433 time_point<_Clock, _ToDuration>
1435 ceil(const time_point<_Clock, _Duration>& __t)
1437 return time_point<_Clock, _ToDuration>{ceil<_ToDuration>(__t.time_since_epoch())};
1440 template <class _ToDuration, class _Clock, class _Duration>
1441 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1444 __is_duration<_ToDuration>::value,
1445 time_point<_Clock, _ToDuration>
1447 round(const time_point<_Clock, _Duration>& __t)
1449 return time_point<_Clock, _ToDuration>{round<_ToDuration>(__t.time_since_epoch())};
1452 template <class _Rep, class _Period>
1453 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1456 numeric_limits<_Rep>::is_signed,
1457 duration<_Rep, _Period>
1459 abs(duration<_Rep, _Period> __d)
1461 return __d >= __d.zero() ? +__d : -__d;
1467 template <class _Clock, class _Duration1, class _Duration2>
1468 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1470 operator==(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs)
1472 return __lhs.time_since_epoch() == __rhs.time_since_epoch();
1477 template <class _Clock, class _Duration1, class _Duration2>
1478 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1480 operator!=(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs)
1482 return !(__lhs == __rhs);
1487 template <class _Clock, class _Duration1, class _Duration2>
1488 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1490 operator<(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs)
1492 return __lhs.time_since_epoch() < __rhs.time_since_epoch();
1497 template <class _Clock, class _Duration1, class _Duration2>
1498 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1500 operator>(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs)
1502 return __rhs < __lhs;
1507 template <class _Clock, class _Duration1, class _Duration2>
1508 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1510 operator<=(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs)
1512 return !(__rhs < __lhs);
1517 template <class _Clock, class _Duration1, class _Duration2>
1518 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1520 operator>=(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs)
1522 return !(__lhs < __rhs);
1525 // time_point operator+(time_point x, duration y);
1527 template <class _Clock, class _Duration1, class _Rep2, class _Period2>
1528 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1529 time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type>
1530 operator+(const time_point<_Clock, _Duration1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1532 typedef time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type> _Tr;
1533 return _Tr (__lhs.time_since_epoch() + __rhs);
1536 // time_point operator+(duration x, time_point y);
1538 template <class _Rep1, class _Period1, class _Clock, class _Duration2>
1539 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1540 time_point<_Clock, typename common_type<duration<_Rep1, _Period1>, _Duration2>::type>
1541 operator+(const duration<_Rep1, _Period1>& __lhs, const time_point<_Clock, _Duration2>& __rhs)
1543 return __rhs + __lhs;
1546 // time_point operator-(time_point x, duration y);
1548 template <class _Clock, class _Duration1, class _Rep2, class _Period2>
1549 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1550 time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type>
1551 operator-(const time_point<_Clock, _Duration1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1553 typedef time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type> _Ret;
1554 return _Ret(__lhs.time_since_epoch() -__rhs);
1557 // duration operator-(time_point x, time_point y);
1559 template <class _Clock, class _Duration1, class _Duration2>
1560 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1561 typename common_type<_Duration1, _Duration2>::type
1562 operator-(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs)
1564 return __lhs.time_since_epoch() - __rhs.time_since_epoch();
1567 //////////////////////////////////////////////////////////
1568 /////////////////////// clocks ///////////////////////////
1569 //////////////////////////////////////////////////////////
1571 class _LIBCPP_TYPE_VIS system_clock
1574 typedef microseconds duration;
1575 typedef duration::rep rep;
1576 typedef duration::period period;
1577 typedef chrono::time_point<system_clock> time_point;
1578 static _LIBCPP_CONSTEXPR_AFTER_CXX11 const bool is_steady = false;
1580 static time_point now() _NOEXCEPT;
1581 static time_t to_time_t (const time_point& __t) _NOEXCEPT;
1582 static time_point from_time_t(time_t __t) _NOEXCEPT;
1585 #ifndef _LIBCPP_HAS_NO_MONOTONIC_CLOCK
1586 class _LIBCPP_TYPE_VIS steady_clock
1589 typedef nanoseconds duration;
1590 typedef duration::rep rep;
1591 typedef duration::period period;
1592 typedef chrono::time_point<steady_clock, duration> time_point;
1593 static _LIBCPP_CONSTEXPR_AFTER_CXX11 const bool is_steady = true;
1595 static time_point now() _NOEXCEPT;
1598 typedef steady_clock high_resolution_clock;
1600 typedef system_clock high_resolution_clock;
1603 #if _LIBCPP_STD_VER > 17
1604 // [time.clock.file], type file_clock
1605 using file_clock = _VSTD_FS::_FilesystemClock;
1607 template<class _Duration>
1608 using file_time = time_point<file_clock, _Duration>;
1611 template <class _Duration>
1612 using sys_time = time_point<system_clock, _Duration>;
1613 using sys_seconds = sys_time<seconds>;
1614 using sys_days = sys_time<days>;
1617 template<class Duration>
1618 using local_time = time_point<local_t, Duration>;
1619 using local_seconds = local_time<seconds>;
1620 using local_days = local_time<days>;
1623 struct last_spec { explicit last_spec() = default; };
1630 explicit inline constexpr day(unsigned __val) noexcept : __d(static_cast<unsigned char>(__val)) {}
1631 inline constexpr day& operator++() noexcept { ++__d; return *this; }
1632 inline constexpr day operator++(int) noexcept { day __tmp = *this; ++(*this); return __tmp; }
1633 inline constexpr day& operator--() noexcept { --__d; return *this; }
1634 inline constexpr day operator--(int) noexcept { day __tmp = *this; --(*this); return __tmp; }
1635 constexpr day& operator+=(const days& __dd) noexcept;
1636 constexpr day& operator-=(const days& __dd) noexcept;
1637 explicit inline constexpr operator unsigned() const noexcept { return __d; }
1638 inline constexpr bool ok() const noexcept { return __d >= 1 && __d <= 31; }
1643 bool operator==(const day& __lhs, const day& __rhs) noexcept
1644 { return static_cast<unsigned>(__lhs) == static_cast<unsigned>(__rhs); }
1647 bool operator!=(const day& __lhs, const day& __rhs) noexcept
1648 { return !(__lhs == __rhs); }
1651 bool operator< (const day& __lhs, const day& __rhs) noexcept
1652 { return static_cast<unsigned>(__lhs) < static_cast<unsigned>(__rhs); }
1655 bool operator> (const day& __lhs, const day& __rhs) noexcept
1656 { return __rhs < __lhs; }
1659 bool operator<=(const day& __lhs, const day& __rhs) noexcept
1660 { return !(__rhs < __lhs);}
1663 bool operator>=(const day& __lhs, const day& __rhs) noexcept
1664 { return !(__lhs < __rhs); }
1667 day operator+ (const day& __lhs, const days& __rhs) noexcept
1668 { return day(static_cast<unsigned>(__lhs) + __rhs.count()); }
1671 day operator+ (const days& __lhs, const day& __rhs) noexcept
1672 { return __rhs + __lhs; }
1675 day operator- (const day& __lhs, const days& __rhs) noexcept
1676 { return __lhs + -__rhs; }
1679 days operator-(const day& __lhs, const day& __rhs) noexcept
1680 { return days(static_cast<int>(static_cast<unsigned>(__lhs)) -
1681 static_cast<int>(static_cast<unsigned>(__rhs))); }
1683 inline constexpr day& day::operator+=(const days& __dd) noexcept
1684 { *this = *this + __dd; return *this; }
1686 inline constexpr day& day::operator-=(const days& __dd) noexcept
1687 { *this = *this - __dd; return *this; }
1695 explicit inline constexpr month(unsigned __val) noexcept : __m(static_cast<unsigned char>(__val)) {}
1696 inline constexpr month& operator++() noexcept { ++__m; return *this; }
1697 inline constexpr month operator++(int) noexcept { month __tmp = *this; ++(*this); return __tmp; }
1698 inline constexpr month& operator--() noexcept { --__m; return *this; }
1699 inline constexpr month operator--(int) noexcept { month __tmp = *this; --(*this); return __tmp; }
1700 constexpr month& operator+=(const months& __m1) noexcept;
1701 constexpr month& operator-=(const months& __m1) noexcept;
1702 explicit inline constexpr operator unsigned() const noexcept { return __m; }
1703 inline constexpr bool ok() const noexcept { return __m >= 1 && __m <= 12; }
1708 bool operator==(const month& __lhs, const month& __rhs) noexcept
1709 { return static_cast<unsigned>(__lhs) == static_cast<unsigned>(__rhs); }
1712 bool operator!=(const month& __lhs, const month& __rhs) noexcept
1713 { return !(__lhs == __rhs); }
1716 bool operator< (const month& __lhs, const month& __rhs) noexcept
1717 { return static_cast<unsigned>(__lhs) < static_cast<unsigned>(__rhs); }
1720 bool operator> (const month& __lhs, const month& __rhs) noexcept
1721 { return __rhs < __lhs; }
1724 bool operator<=(const month& __lhs, const month& __rhs) noexcept
1725 { return !(__rhs < __lhs); }
1728 bool operator>=(const month& __lhs, const month& __rhs) noexcept
1729 { return !(__lhs < __rhs); }
1732 month operator+ (const month& __lhs, const months& __rhs) noexcept
1734 auto const __mu = static_cast<long long>(static_cast<unsigned>(__lhs)) + (__rhs.count() - 1);
1735 auto const __yr = (__mu >= 0 ? __mu : __mu - 11) / 12;
1736 return month{static_cast<unsigned>(__mu - __yr * 12 + 1)};
1740 month operator+ (const months& __lhs, const month& __rhs) noexcept
1741 { return __rhs + __lhs; }
1744 month operator- (const month& __lhs, const months& __rhs) noexcept
1745 { return __lhs + -__rhs; }
1748 months operator-(const month& __lhs, const month& __rhs) noexcept
1750 auto const __dm = static_cast<unsigned>(__lhs) - static_cast<unsigned>(__rhs);
1751 return months(__dm <= 11 ? __dm : __dm + 12);
1754 inline constexpr month& month::operator+=(const months& __dm) noexcept
1755 { *this = *this + __dm; return *this; }
1757 inline constexpr month& month::operator-=(const months& __dm) noexcept
1758 { *this = *this - __dm; return *this; }
1766 explicit inline constexpr year(int __val) noexcept : __y(static_cast<short>(__val)) {}
1768 inline constexpr year& operator++() noexcept { ++__y; return *this; }
1769 inline constexpr year operator++(int) noexcept { year __tmp = *this; ++(*this); return __tmp; }
1770 inline constexpr year& operator--() noexcept { --__y; return *this; }
1771 inline constexpr year operator--(int) noexcept { year __tmp = *this; --(*this); return __tmp; }
1772 constexpr year& operator+=(const years& __dy) noexcept;
1773 constexpr year& operator-=(const years& __dy) noexcept;
1774 inline constexpr year operator+() const noexcept { return *this; }
1775 inline constexpr year operator-() const noexcept { return year{-__y}; }
1777 inline constexpr bool is_leap() const noexcept { return __y % 4 == 0 && (__y % 100 != 0 || __y % 400 == 0); }
1778 explicit inline constexpr operator int() const noexcept { return __y; }
1779 constexpr bool ok() const noexcept;
1780 static inline constexpr year min() noexcept { return year{-32767}; }
1781 static inline constexpr year max() noexcept { return year{ 32767}; }
1786 bool operator==(const year& __lhs, const year& __rhs) noexcept
1787 { return static_cast<int>(__lhs) == static_cast<int>(__rhs); }
1790 bool operator!=(const year& __lhs, const year& __rhs) noexcept
1791 { return !(__lhs == __rhs); }
1794 bool operator< (const year& __lhs, const year& __rhs) noexcept
1795 { return static_cast<int>(__lhs) < static_cast<int>(__rhs); }
1798 bool operator> (const year& __lhs, const year& __rhs) noexcept
1799 { return __rhs < __lhs; }
1802 bool operator<=(const year& __lhs, const year& __rhs) noexcept
1803 { return !(__rhs < __lhs); }
1806 bool operator>=(const year& __lhs, const year& __rhs) noexcept
1807 { return !(__lhs < __rhs); }
1810 year operator+ (const year& __lhs, const years& __rhs) noexcept
1811 { return year(static_cast<int>(__lhs) + __rhs.count()); }
1814 year operator+ (const years& __lhs, const year& __rhs) noexcept
1815 { return __rhs + __lhs; }
1818 year operator- (const year& __lhs, const years& __rhs) noexcept
1819 { return __lhs + -__rhs; }
1822 years operator-(const year& __lhs, const year& __rhs) noexcept
1823 { return years{static_cast<int>(__lhs) - static_cast<int>(__rhs)}; }
1826 inline constexpr year& year::operator+=(const years& __dy) noexcept
1827 { *this = *this + __dy; return *this; }
1829 inline constexpr year& year::operator-=(const years& __dy) noexcept
1830 { *this = *this - __dy; return *this; }
1832 inline constexpr bool year::ok() const noexcept
1833 { return static_cast<int>(min()) <= __y && __y <= static_cast<int>(max()); }
1835 class weekday_indexed;
1842 weekday() = default;
1843 inline explicit constexpr weekday(unsigned __val) noexcept : __wd(static_cast<unsigned char>(__val == 7 ? 0 : __val)) {}
1844 inline constexpr weekday(const sys_days& __sysd) noexcept
1845 : __wd(__weekday_from_days(__sysd.time_since_epoch().count())) {}
1846 inline explicit constexpr weekday(const local_days& __locd) noexcept
1847 : __wd(__weekday_from_days(__locd.time_since_epoch().count())) {}
1849 inline constexpr weekday& operator++() noexcept { __wd = (__wd == 6 ? 0 : __wd + 1); return *this; }
1850 inline constexpr weekday operator++(int) noexcept { weekday __tmp = *this; ++(*this); return __tmp; }
1851 inline constexpr weekday& operator--() noexcept { __wd = (__wd == 0 ? 6 : __wd - 1); return *this; }
1852 inline constexpr weekday operator--(int) noexcept { weekday __tmp = *this; --(*this); return __tmp; }
1853 constexpr weekday& operator+=(const days& __dd) noexcept;
1854 constexpr weekday& operator-=(const days& __dd) noexcept;
1855 inline constexpr unsigned c_encoding() const noexcept { return __wd; }
1856 inline constexpr unsigned iso_encoding() const noexcept { return __wd == 0u ? 7 : __wd; }
1857 inline constexpr bool ok() const noexcept { return __wd <= 6; }
1858 constexpr weekday_indexed operator[](unsigned __index) const noexcept;
1859 constexpr weekday_last operator[](last_spec) const noexcept;
1861 // TODO: Make private?
1862 static constexpr unsigned char __weekday_from_days(int __days) noexcept;
1866 // https://howardhinnant.github.io/date_algorithms.html#weekday_from_days
1868 unsigned char weekday::__weekday_from_days(int __days) noexcept
1870 return static_cast<unsigned char>(
1871 static_cast<unsigned>(__days >= -4 ? (__days+4) % 7 : (__days+5) % 7 + 6)
1876 bool operator==(const weekday& __lhs, const weekday& __rhs) noexcept
1877 { return __lhs.c_encoding() == __rhs.c_encoding(); }
1880 bool operator!=(const weekday& __lhs, const weekday& __rhs) noexcept
1881 { return !(__lhs == __rhs); }
1884 bool operator< (const weekday& __lhs, const weekday& __rhs) noexcept
1885 { return __lhs.c_encoding() < __rhs.c_encoding(); }
1888 bool operator> (const weekday& __lhs, const weekday& __rhs) noexcept
1889 { return __rhs < __lhs; }
1892 bool operator<=(const weekday& __lhs, const weekday& __rhs) noexcept
1893 { return !(__rhs < __lhs);}
1896 bool operator>=(const weekday& __lhs, const weekday& __rhs) noexcept
1897 { return !(__lhs < __rhs); }
1899 constexpr weekday operator+(const weekday& __lhs, const days& __rhs) noexcept
1901 auto const __mu = static_cast<long long>(__lhs.c_encoding()) + __rhs.count();
1902 auto const __yr = (__mu >= 0 ? __mu : __mu - 6) / 7;
1903 return weekday{static_cast<unsigned>(__mu - __yr * 7)};
1906 constexpr weekday operator+(const days& __lhs, const weekday& __rhs) noexcept
1907 { return __rhs + __lhs; }
1909 constexpr weekday operator-(const weekday& __lhs, const days& __rhs) noexcept
1910 { return __lhs + -__rhs; }
1912 constexpr days operator-(const weekday& __lhs, const weekday& __rhs) noexcept
1914 const int __wdu = __lhs.c_encoding() - __rhs.c_encoding();
1915 const int __wk = (__wdu >= 0 ? __wdu : __wdu-6) / 7;
1916 return days{__wdu - __wk * 7};
1919 inline constexpr weekday& weekday::operator+=(const days& __dd) noexcept
1920 { *this = *this + __dd; return *this; }
1922 inline constexpr weekday& weekday::operator-=(const days& __dd) noexcept
1923 { *this = *this - __dd; return *this; }
1926 class weekday_indexed {
1928 _VSTD::chrono::weekday __wd;
1929 unsigned char __idx;
1931 weekday_indexed() = default;
1932 inline constexpr weekday_indexed(const _VSTD::chrono::weekday& __wdval, unsigned __idxval) noexcept
1933 : __wd{__wdval}, __idx(__idxval) {}
1934 inline constexpr _VSTD::chrono::weekday weekday() const noexcept { return __wd; }
1935 inline constexpr unsigned index() const noexcept { return __idx; }
1936 inline constexpr bool ok() const noexcept { return __wd.ok() && __idx >= 1 && __idx <= 5; }
1940 bool operator==(const weekday_indexed& __lhs, const weekday_indexed& __rhs) noexcept
1941 { return __lhs.weekday() == __rhs.weekday() && __lhs.index() == __rhs.index(); }
1944 bool operator!=(const weekday_indexed& __lhs, const weekday_indexed& __rhs) noexcept
1945 { return !(__lhs == __rhs); }
1948 class weekday_last {
1950 _VSTD::chrono::weekday __wd;
1952 explicit constexpr weekday_last(const _VSTD::chrono::weekday& __val) noexcept
1954 constexpr _VSTD::chrono::weekday weekday() const noexcept { return __wd; }
1955 constexpr bool ok() const noexcept { return __wd.ok(); }
1959 bool operator==(const weekday_last& __lhs, const weekday_last& __rhs) noexcept
1960 { return __lhs.weekday() == __rhs.weekday(); }
1963 bool operator!=(const weekday_last& __lhs, const weekday_last& __rhs) noexcept
1964 { return !(__lhs == __rhs); }
1967 weekday_indexed weekday::operator[](unsigned __index) const noexcept { return weekday_indexed{*this, __index}; }
1970 weekday_last weekday::operator[](last_spec) const noexcept { return weekday_last{*this}; }
1973 inline constexpr last_spec last{};
1974 inline constexpr weekday Sunday{0};
1975 inline constexpr weekday Monday{1};
1976 inline constexpr weekday Tuesday{2};
1977 inline constexpr weekday Wednesday{3};
1978 inline constexpr weekday Thursday{4};
1979 inline constexpr weekday Friday{5};
1980 inline constexpr weekday Saturday{6};
1982 inline constexpr month January{1};
1983 inline constexpr month February{2};
1984 inline constexpr month March{3};
1985 inline constexpr month April{4};
1986 inline constexpr month May{5};
1987 inline constexpr month June{6};
1988 inline constexpr month July{7};
1989 inline constexpr month August{8};
1990 inline constexpr month September{9};
1991 inline constexpr month October{10};
1992 inline constexpr month November{11};
1993 inline constexpr month December{12};
2001 month_day() = default;
2002 constexpr month_day(const chrono::month& __mval, const chrono::day& __dval) noexcept
2003 : __m{__mval}, __d{__dval} {}
2004 inline constexpr chrono::month month() const noexcept { return __m; }
2005 inline constexpr chrono::day day() const noexcept { return __d; }
2006 constexpr bool ok() const noexcept;
2010 bool month_day::ok() const noexcept
2012 if (!__m.ok()) return false;
2013 const unsigned __dval = static_cast<unsigned>(__d);
2014 if (__dval < 1 || __dval > 31) return false;
2015 if (__dval <= 29) return true;
2016 // Now we've got either 30 or 31
2017 const unsigned __mval = static_cast<unsigned>(__m);
2018 if (__mval == 2) return false;
2019 if (__mval == 4 || __mval == 6 || __mval == 9 || __mval == 11)
2020 return __dval == 30;
2025 bool operator==(const month_day& __lhs, const month_day& __rhs) noexcept
2026 { return __lhs.month() == __rhs.month() && __lhs.day() == __rhs.day(); }
2029 bool operator!=(const month_day& __lhs, const month_day& __rhs) noexcept
2030 { return !(__lhs == __rhs); }
2033 month_day operator/(const month& __lhs, const day& __rhs) noexcept
2034 { return month_day{__lhs, __rhs}; }
2037 month_day operator/(const day& __lhs, const month& __rhs) noexcept
2038 { return __rhs / __lhs; }
2041 month_day operator/(const month& __lhs, int __rhs) noexcept
2042 { return __lhs / day(__rhs); }
2045 month_day operator/(int __lhs, const day& __rhs) noexcept
2046 { return month(__lhs) / __rhs; }
2049 month_day operator/(const day& __lhs, int __rhs) noexcept
2050 { return month(__rhs) / __lhs; }
2054 bool operator< (const month_day& __lhs, const month_day& __rhs) noexcept
2055 { return __lhs.month() != __rhs.month() ? __lhs.month() < __rhs.month() : __lhs.day() < __rhs.day(); }
2058 bool operator> (const month_day& __lhs, const month_day& __rhs) noexcept
2059 { return __rhs < __lhs; }
2062 bool operator<=(const month_day& __lhs, const month_day& __rhs) noexcept
2063 { return !(__rhs < __lhs);}
2066 bool operator>=(const month_day& __lhs, const month_day& __rhs) noexcept
2067 { return !(__lhs < __rhs); }
2071 class month_day_last {
2075 explicit constexpr month_day_last(const chrono::month& __val) noexcept
2077 inline constexpr chrono::month month() const noexcept { return __m; }
2078 inline constexpr bool ok() const noexcept { return __m.ok(); }
2082 bool operator==(const month_day_last& __lhs, const month_day_last& __rhs) noexcept
2083 { return __lhs.month() == __rhs.month(); }
2086 bool operator!=(const month_day_last& __lhs, const month_day_last& __rhs) noexcept
2087 { return !(__lhs == __rhs); }
2090 bool operator< (const month_day_last& __lhs, const month_day_last& __rhs) noexcept
2091 { return __lhs.month() < __rhs.month(); }
2094 bool operator> (const month_day_last& __lhs, const month_day_last& __rhs) noexcept
2095 { return __rhs < __lhs; }
2098 bool operator<=(const month_day_last& __lhs, const month_day_last& __rhs) noexcept
2099 { return !(__rhs < __lhs);}
2102 bool operator>=(const month_day_last& __lhs, const month_day_last& __rhs) noexcept
2103 { return !(__lhs < __rhs); }
2106 month_day_last operator/(const month& __lhs, last_spec) noexcept
2107 { return month_day_last{__lhs}; }
2110 month_day_last operator/(last_spec, const month& __rhs) noexcept
2111 { return month_day_last{__rhs}; }
2114 month_day_last operator/(int __lhs, last_spec) noexcept
2115 { return month_day_last{month(__lhs)}; }
2118 month_day_last operator/(last_spec, int __rhs) noexcept
2119 { return month_day_last{month(__rhs)}; }
2122 class month_weekday {
2125 chrono::weekday_indexed __wdi;
2127 month_weekday() = default;
2128 constexpr month_weekday(const chrono::month& __mval, const chrono::weekday_indexed& __wdival) noexcept
2129 : __m{__mval}, __wdi{__wdival} {}
2130 inline constexpr chrono::month month() const noexcept { return __m; }
2131 inline constexpr chrono::weekday_indexed weekday_indexed() const noexcept { return __wdi; }
2132 inline constexpr bool ok() const noexcept { return __m.ok() && __wdi.ok(); }
2136 bool operator==(const month_weekday& __lhs, const month_weekday& __rhs) noexcept
2137 { return __lhs.month() == __rhs.month() && __lhs.weekday_indexed() == __rhs.weekday_indexed(); }
2140 bool operator!=(const month_weekday& __lhs, const month_weekday& __rhs) noexcept
2141 { return !(__lhs == __rhs); }
2144 month_weekday operator/(const month& __lhs, const weekday_indexed& __rhs) noexcept
2145 { return month_weekday{__lhs, __rhs}; }
2148 month_weekday operator/(int __lhs, const weekday_indexed& __rhs) noexcept
2149 { return month_weekday{month(__lhs), __rhs}; }
2152 month_weekday operator/(const weekday_indexed& __lhs, const month& __rhs) noexcept
2153 { return month_weekday{__rhs, __lhs}; }
2156 month_weekday operator/(const weekday_indexed& __lhs, int __rhs) noexcept
2157 { return month_weekday{month(__rhs), __lhs}; }
2160 class month_weekday_last {
2162 chrono::weekday_last __wdl;
2164 constexpr month_weekday_last(const chrono::month& __mval, const chrono::weekday_last& __wdlval) noexcept
2165 : __m{__mval}, __wdl{__wdlval} {}
2166 inline constexpr chrono::month month() const noexcept { return __m; }
2167 inline constexpr chrono::weekday_last weekday_last() const noexcept { return __wdl; }
2168 inline constexpr bool ok() const noexcept { return __m.ok() && __wdl.ok(); }
2172 bool operator==(const month_weekday_last& __lhs, const month_weekday_last& __rhs) noexcept
2173 { return __lhs.month() == __rhs.month() && __lhs.weekday_last() == __rhs.weekday_last(); }
2176 bool operator!=(const month_weekday_last& __lhs, const month_weekday_last& __rhs) noexcept
2177 { return !(__lhs == __rhs); }
2181 month_weekday_last operator/(const month& __lhs, const weekday_last& __rhs) noexcept
2182 { return month_weekday_last{__lhs, __rhs}; }
2185 month_weekday_last operator/(int __lhs, const weekday_last& __rhs) noexcept
2186 { return month_weekday_last{month(__lhs), __rhs}; }
2189 month_weekday_last operator/(const weekday_last& __lhs, const month& __rhs) noexcept
2190 { return month_weekday_last{__rhs, __lhs}; }
2193 month_weekday_last operator/(const weekday_last& __lhs, int __rhs) noexcept
2194 { return month_weekday_last{month(__rhs), __lhs}; }
2201 year_month() = default;
2202 constexpr year_month(const chrono::year& __yval, const chrono::month& __mval) noexcept
2203 : __y{__yval}, __m{__mval} {}
2204 inline constexpr chrono::year year() const noexcept { return __y; }
2205 inline constexpr chrono::month month() const noexcept { return __m; }
2206 inline constexpr year_month& operator+=(const months& __dm) noexcept { this->__m += __dm; return *this; }
2207 inline constexpr year_month& operator-=(const months& __dm) noexcept { this->__m -= __dm; return *this; }
2208 inline constexpr year_month& operator+=(const years& __dy) noexcept { this->__y += __dy; return *this; }
2209 inline constexpr year_month& operator-=(const years& __dy) noexcept { this->__y -= __dy; return *this; }
2210 inline constexpr bool ok() const noexcept { return __y.ok() && __m.ok(); }
2214 year_month operator/(const year& __y, const month& __m) noexcept { return year_month{__y, __m}; }
2217 year_month operator/(const year& __y, int __m) noexcept { return year_month{__y, month(__m)}; }
2220 bool operator==(const year_month& __lhs, const year_month& __rhs) noexcept
2221 { return __lhs.year() == __rhs.year() && __lhs.month() == __rhs.month(); }
2224 bool operator!=(const year_month& __lhs, const year_month& __rhs) noexcept
2225 { return !(__lhs == __rhs); }
2228 bool operator< (const year_month& __lhs, const year_month& __rhs) noexcept
2229 { return __lhs.year() != __rhs.year() ? __lhs.year() < __rhs.year() : __lhs.month() < __rhs.month(); }
2232 bool operator> (const year_month& __lhs, const year_month& __rhs) noexcept
2233 { return __rhs < __lhs; }
2236 bool operator<=(const year_month& __lhs, const year_month& __rhs) noexcept
2237 { return !(__rhs < __lhs);}
2240 bool operator>=(const year_month& __lhs, const year_month& __rhs) noexcept
2241 { return !(__lhs < __rhs); }
2243 constexpr year_month operator+(const year_month& __lhs, const months& __rhs) noexcept
2245 int __dmi = static_cast<int>(static_cast<unsigned>(__lhs.month())) - 1 + __rhs.count();
2246 const int __dy = (__dmi >= 0 ? __dmi : __dmi-11) / 12;
2247 __dmi = __dmi - __dy * 12 + 1;
2248 return (__lhs.year() + years(__dy)) / month(static_cast<unsigned>(__dmi));
2251 constexpr year_month operator+(const months& __lhs, const year_month& __rhs) noexcept
2252 { return __rhs + __lhs; }
2254 constexpr year_month operator+(const year_month& __lhs, const years& __rhs) noexcept
2255 { return (__lhs.year() + __rhs) / __lhs.month(); }
2257 constexpr year_month operator+(const years& __lhs, const year_month& __rhs) noexcept
2258 { return __rhs + __lhs; }
2260 constexpr months operator-(const year_month& __lhs, const year_month& __rhs) noexcept
2261 { return (__lhs.year() - __rhs.year()) + months(static_cast<unsigned>(__lhs.month()) - static_cast<unsigned>(__rhs.month())); }
2263 constexpr year_month operator-(const year_month& __lhs, const months& __rhs) noexcept
2264 { return __lhs + -__rhs; }
2266 constexpr year_month operator-(const year_month& __lhs, const years& __rhs) noexcept
2267 { return __lhs + -__rhs; }
2269 class year_month_day_last;
2271 class year_month_day {
2277 year_month_day() = default;
2278 inline constexpr year_month_day(
2279 const chrono::year& __yval, const chrono::month& __mval, const chrono::day& __dval) noexcept
2280 : __y{__yval}, __m{__mval}, __d{__dval} {}
2281 constexpr year_month_day(const year_month_day_last& __ymdl) noexcept;
2282 inline constexpr year_month_day(const sys_days& __sysd) noexcept
2283 : year_month_day(__from_days(__sysd.time_since_epoch())) {}
2284 inline explicit constexpr year_month_day(const local_days& __locd) noexcept
2285 : year_month_day(__from_days(__locd.time_since_epoch())) {}
2287 constexpr year_month_day& operator+=(const months& __dm) noexcept;
2288 constexpr year_month_day& operator-=(const months& __dm) noexcept;
2289 constexpr year_month_day& operator+=(const years& __dy) noexcept;
2290 constexpr year_month_day& operator-=(const years& __dy) noexcept;
2292 inline constexpr chrono::year year() const noexcept { return __y; }
2293 inline constexpr chrono::month month() const noexcept { return __m; }
2294 inline constexpr chrono::day day() const noexcept { return __d; }
2295 inline constexpr operator sys_days() const noexcept { return sys_days{__to_days()}; }
2296 inline explicit constexpr operator local_days() const noexcept { return local_days{__to_days()}; }
2298 constexpr bool ok() const noexcept;
2300 static constexpr year_month_day __from_days(days __d) noexcept;
2301 constexpr days __to_days() const noexcept;
2305 // https://howardhinnant.github.io/date_algorithms.html#civil_from_days
2308 year_month_day::__from_days(days __d) noexcept
2310 static_assert(std::numeric_limits<unsigned>::digits >= 18, "");
2311 static_assert(std::numeric_limits<int>::digits >= 20 , "");
2312 const int __z = __d.count() + 719468;
2313 const int __era = (__z >= 0 ? __z : __z - 146096) / 146097;
2314 const unsigned __doe = static_cast<unsigned>(__z - __era * 146097); // [0, 146096]
2315 const unsigned __yoe = (__doe - __doe/1460 + __doe/36524 - __doe/146096) / 365; // [0, 399]
2316 const int __yr = static_cast<int>(__yoe) + __era * 400;
2317 const unsigned __doy = __doe - (365 * __yoe + __yoe/4 - __yoe/100); // [0, 365]
2318 const unsigned __mp = (5 * __doy + 2)/153; // [0, 11]
2319 const unsigned __dy = __doy - (153 * __mp + 2)/5 + 1; // [1, 31]
2320 const unsigned __mth = __mp + (__mp < 10 ? 3 : -9); // [1, 12]
2321 return year_month_day{chrono::year{__yr + (__mth <= 2)}, chrono::month{__mth}, chrono::day{__dy}};
2324 // https://howardhinnant.github.io/date_algorithms.html#days_from_civil
2325 inline constexpr days year_month_day::__to_days() const noexcept
2327 static_assert(std::numeric_limits<unsigned>::digits >= 18, "");
2328 static_assert(std::numeric_limits<int>::digits >= 20 , "");
2330 const int __yr = static_cast<int>(__y) - (__m <= February);
2331 const unsigned __mth = static_cast<unsigned>(__m);
2332 const unsigned __dy = static_cast<unsigned>(__d);
2334 const int __era = (__yr >= 0 ? __yr : __yr - 399) / 400;
2335 const unsigned __yoe = static_cast<unsigned>(__yr - __era * 400); // [0, 399]
2336 const unsigned __doy = (153 * (__mth + (__mth > 2 ? -3 : 9)) + 2) / 5 + __dy-1; // [0, 365]
2337 const unsigned __doe = __yoe * 365 + __yoe/4 - __yoe/100 + __doy; // [0, 146096]
2338 return days{__era * 146097 + static_cast<int>(__doe) - 719468};
2342 bool operator==(const year_month_day& __lhs, const year_month_day& __rhs) noexcept
2343 { return __lhs.year() == __rhs.year() && __lhs.month() == __rhs.month() && __lhs.day() == __rhs.day(); }
2346 bool operator!=(const year_month_day& __lhs, const year_month_day& __rhs) noexcept
2347 { return !(__lhs == __rhs); }
2350 bool operator< (const year_month_day& __lhs, const year_month_day& __rhs) noexcept
2352 if (__lhs.year() < __rhs.year()) return true;
2353 if (__lhs.year() > __rhs.year()) return false;
2354 if (__lhs.month() < __rhs.month()) return true;
2355 if (__lhs.month() > __rhs.month()) return false;
2356 return __lhs.day() < __rhs.day();
2360 bool operator> (const year_month_day& __lhs, const year_month_day& __rhs) noexcept
2361 { return __rhs < __lhs; }
2364 bool operator<=(const year_month_day& __lhs, const year_month_day& __rhs) noexcept
2365 { return !(__rhs < __lhs);}
2368 bool operator>=(const year_month_day& __lhs, const year_month_day& __rhs) noexcept
2369 { return !(__lhs < __rhs); }
2372 year_month_day operator/(const year_month& __lhs, const day& __rhs) noexcept
2373 { return year_month_day{__lhs.year(), __lhs.month(), __rhs}; }
2376 year_month_day operator/(const year_month& __lhs, int __rhs) noexcept
2377 { return __lhs / day(__rhs); }
2380 year_month_day operator/(const year& __lhs, const month_day& __rhs) noexcept
2381 { return __lhs / __rhs.month() / __rhs.day(); }
2384 year_month_day operator/(int __lhs, const month_day& __rhs) noexcept
2385 { return year(__lhs) / __rhs; }
2388 year_month_day operator/(const month_day& __lhs, const year& __rhs) noexcept
2389 { return __rhs / __lhs; }
2392 year_month_day operator/(const month_day& __lhs, int __rhs) noexcept
2393 { return year(__rhs) / __lhs; }
2397 year_month_day operator+(const year_month_day& __lhs, const months& __rhs) noexcept
2398 { return (__lhs.year()/__lhs.month() + __rhs)/__lhs.day(); }
2401 year_month_day operator+(const months& __lhs, const year_month_day& __rhs) noexcept
2402 { return __rhs + __lhs; }
2405 year_month_day operator-(const year_month_day& __lhs, const months& __rhs) noexcept
2406 { return __lhs + -__rhs; }
2409 year_month_day operator+(const year_month_day& __lhs, const years& __rhs) noexcept
2410 { return (__lhs.year() + __rhs) / __lhs.month() / __lhs.day(); }
2413 year_month_day operator+(const years& __lhs, const year_month_day& __rhs) noexcept
2414 { return __rhs + __lhs; }
2417 year_month_day operator-(const year_month_day& __lhs, const years& __rhs) noexcept
2418 { return __lhs + -__rhs; }
2420 inline constexpr year_month_day& year_month_day::operator+=(const months& __dm) noexcept { *this = *this + __dm; return *this; }
2421 inline constexpr year_month_day& year_month_day::operator-=(const months& __dm) noexcept { *this = *this - __dm; return *this; }
2422 inline constexpr year_month_day& year_month_day::operator+=(const years& __dy) noexcept { *this = *this + __dy; return *this; }
2423 inline constexpr year_month_day& year_month_day::operator-=(const years& __dy) noexcept { *this = *this - __dy; return *this; }
2425 class year_month_day_last {
2428 chrono::month_day_last __mdl;
2430 constexpr year_month_day_last(const year& __yval, const month_day_last& __mdlval) noexcept
2431 : __y{__yval}, __mdl{__mdlval} {}
2433 constexpr year_month_day_last& operator+=(const months& __m) noexcept;
2434 constexpr year_month_day_last& operator-=(const months& __m) noexcept;
2435 constexpr year_month_day_last& operator+=(const years& __y) noexcept;
2436 constexpr year_month_day_last& operator-=(const years& __y) noexcept;
2438 inline constexpr chrono::year year() const noexcept { return __y; }
2439 inline constexpr chrono::month month() const noexcept { return __mdl.month(); }
2440 inline constexpr chrono::month_day_last month_day_last() const noexcept { return __mdl; }
2441 constexpr chrono::day day() const noexcept;
2442 inline constexpr operator sys_days() const noexcept { return sys_days{year()/month()/day()}; }
2443 inline explicit constexpr operator local_days() const noexcept { return local_days{year()/month()/day()}; }
2444 inline constexpr bool ok() const noexcept { return __y.ok() && __mdl.ok(); }
2448 chrono::day year_month_day_last::day() const noexcept
2450 constexpr chrono::day __d[] =
2452 chrono::day(31), chrono::day(28), chrono::day(31),
2453 chrono::day(30), chrono::day(31), chrono::day(30),
2454 chrono::day(31), chrono::day(31), chrono::day(30),
2455 chrono::day(31), chrono::day(30), chrono::day(31)
2457 return month() != February || !__y.is_leap() ?
2458 __d[static_cast<unsigned>(month()) - 1] : chrono::day{29};
2462 bool operator==(const year_month_day_last& __lhs, const year_month_day_last& __rhs) noexcept
2463 { return __lhs.year() == __rhs.year() && __lhs.month_day_last() == __rhs.month_day_last(); }
2466 bool operator!=(const year_month_day_last& __lhs, const year_month_day_last& __rhs) noexcept
2467 { return !(__lhs == __rhs); }
2470 bool operator< (const year_month_day_last& __lhs, const year_month_day_last& __rhs) noexcept
2472 if (__lhs.year() < __rhs.year()) return true;
2473 if (__lhs.year() > __rhs.year()) return false;
2474 return __lhs.month_day_last() < __rhs.month_day_last();
2478 bool operator> (const year_month_day_last& __lhs, const year_month_day_last& __rhs) noexcept
2479 { return __rhs < __lhs; }
2482 bool operator<=(const year_month_day_last& __lhs, const year_month_day_last& __rhs) noexcept
2483 { return !(__rhs < __lhs);}
2486 bool operator>=(const year_month_day_last& __lhs, const year_month_day_last& __rhs) noexcept
2487 { return !(__lhs < __rhs); }
2489 inline constexpr year_month_day_last operator/(const year_month& __lhs, last_spec) noexcept
2490 { return year_month_day_last{__lhs.year(), month_day_last{__lhs.month()}}; }
2492 inline constexpr year_month_day_last operator/(const year& __lhs, const month_day_last& __rhs) noexcept
2493 { return year_month_day_last{__lhs, __rhs}; }
2495 inline constexpr year_month_day_last operator/(int __lhs, const month_day_last& __rhs) noexcept
2496 { return year_month_day_last{year{__lhs}, __rhs}; }
2498 inline constexpr year_month_day_last operator/(const month_day_last& __lhs, const year& __rhs) noexcept
2499 { return __rhs / __lhs; }
2501 inline constexpr year_month_day_last operator/(const month_day_last& __lhs, int __rhs) noexcept
2502 { return year{__rhs} / __lhs; }
2506 year_month_day_last operator+(const year_month_day_last& __lhs, const months& __rhs) noexcept
2507 { return (__lhs.year() / __lhs.month() + __rhs) / last; }
2510 year_month_day_last operator+(const months& __lhs, const year_month_day_last& __rhs) noexcept
2511 { return __rhs + __lhs; }
2514 year_month_day_last operator-(const year_month_day_last& __lhs, const months& __rhs) noexcept
2515 { return __lhs + (-__rhs); }
2518 year_month_day_last operator+(const year_month_day_last& __lhs, const years& __rhs) noexcept
2519 { return year_month_day_last{__lhs.year() + __rhs, __lhs.month_day_last()}; }
2522 year_month_day_last operator+(const years& __lhs, const year_month_day_last& __rhs) noexcept
2523 { return __rhs + __lhs; }
2526 year_month_day_last operator-(const year_month_day_last& __lhs, const years& __rhs) noexcept
2527 { return __lhs + (-__rhs); }
2529 inline constexpr year_month_day_last& year_month_day_last::operator+=(const months& __dm) noexcept { *this = *this + __dm; return *this; }
2530 inline constexpr year_month_day_last& year_month_day_last::operator-=(const months& __dm) noexcept { *this = *this - __dm; return *this; }
2531 inline constexpr year_month_day_last& year_month_day_last::operator+=(const years& __dy) noexcept { *this = *this + __dy; return *this; }
2532 inline constexpr year_month_day_last& year_month_day_last::operator-=(const years& __dy) noexcept { *this = *this - __dy; return *this; }
2534 inline constexpr year_month_day::year_month_day(const year_month_day_last& __ymdl) noexcept
2535 : __y{__ymdl.year()}, __m{__ymdl.month()}, __d{__ymdl.day()} {}
2537 inline constexpr bool year_month_day::ok() const noexcept
2539 if (!__y.ok() || !__m.ok()) return false;
2540 return chrono::day{1} <= __d && __d <= (__y / __m / last).day();
2543 class year_month_weekday {
2546 chrono::weekday_indexed __wdi;
2548 year_month_weekday() = default;
2549 constexpr year_month_weekday(const chrono::year& __yval, const chrono::month& __mval,
2550 const chrono::weekday_indexed& __wdival) noexcept
2551 : __y{__yval}, __m{__mval}, __wdi{__wdival} {}
2552 constexpr year_month_weekday(const sys_days& __sysd) noexcept
2553 : year_month_weekday(__from_days(__sysd.time_since_epoch())) {}
2554 inline explicit constexpr year_month_weekday(const local_days& __locd) noexcept
2555 : year_month_weekday(__from_days(__locd.time_since_epoch())) {}
2556 constexpr year_month_weekday& operator+=(const months& m) noexcept;
2557 constexpr year_month_weekday& operator-=(const months& m) noexcept;
2558 constexpr year_month_weekday& operator+=(const years& y) noexcept;
2559 constexpr year_month_weekday& operator-=(const years& y) noexcept;
2561 inline constexpr chrono::year year() const noexcept { return __y; }
2562 inline constexpr chrono::month month() const noexcept { return __m; }
2563 inline constexpr chrono::weekday weekday() const noexcept { return __wdi.weekday(); }
2564 inline constexpr unsigned index() const noexcept { return __wdi.index(); }
2565 inline constexpr chrono::weekday_indexed weekday_indexed() const noexcept { return __wdi; }
2567 inline constexpr operator sys_days() const noexcept { return sys_days{__to_days()}; }
2568 inline explicit constexpr operator local_days() const noexcept { return local_days{__to_days()}; }
2569 inline constexpr bool ok() const noexcept
2571 if (!__y.ok() || !__m.ok() || !__wdi.ok()) return false;
2572 if (__wdi.index() <= 4) return true;
2573 auto __nth_weekday_day =
2575 chrono::weekday{static_cast<sys_days>(__y / __m / 1)} +
2576 days{(__wdi.index() - 1) * 7 + 1};
2577 return static_cast<unsigned>(__nth_weekday_day.count()) <=
2578 static_cast<unsigned>((__y / __m / last).day());
2581 static constexpr year_month_weekday __from_days(days __d) noexcept;
2582 constexpr days __to_days() const noexcept;
2586 year_month_weekday year_month_weekday::__from_days(days __d) noexcept
2588 const sys_days __sysd{__d};
2589 const chrono::weekday __wd = chrono::weekday(__sysd);
2590 const year_month_day __ymd = year_month_day(__sysd);
2591 return year_month_weekday{__ymd.year(), __ymd.month(),
2592 __wd[(static_cast<unsigned>(__ymd.day())-1)/7+1]};
2596 days year_month_weekday::__to_days() const noexcept
2598 const sys_days __sysd = sys_days(__y/__m/1);
2599 return (__sysd + (__wdi.weekday() - chrono::weekday(__sysd) + days{(__wdi.index()-1)*7}))
2600 .time_since_epoch();
2604 bool operator==(const year_month_weekday& __lhs, const year_month_weekday& __rhs) noexcept
2605 { return __lhs.year() == __rhs.year() && __lhs.month() == __rhs.month() && __lhs.weekday_indexed() == __rhs.weekday_indexed(); }
2608 bool operator!=(const year_month_weekday& __lhs, const year_month_weekday& __rhs) noexcept
2609 { return !(__lhs == __rhs); }
2612 year_month_weekday operator/(const year_month& __lhs, const weekday_indexed& __rhs) noexcept
2613 { return year_month_weekday{__lhs.year(), __lhs.month(), __rhs}; }
2616 year_month_weekday operator/(const year& __lhs, const month_weekday& __rhs) noexcept
2617 { return year_month_weekday{__lhs, __rhs.month(), __rhs.weekday_indexed()}; }
2620 year_month_weekday operator/(int __lhs, const month_weekday& __rhs) noexcept
2621 { return year(__lhs) / __rhs; }
2624 year_month_weekday operator/(const month_weekday& __lhs, const year& __rhs) noexcept
2625 { return __rhs / __lhs; }
2628 year_month_weekday operator/(const month_weekday& __lhs, int __rhs) noexcept
2629 { return year(__rhs) / __lhs; }
2633 year_month_weekday operator+(const year_month_weekday& __lhs, const months& __rhs) noexcept
2634 { return (__lhs.year() / __lhs.month() + __rhs) / __lhs.weekday_indexed(); }
2637 year_month_weekday operator+(const months& __lhs, const year_month_weekday& __rhs) noexcept
2638 { return __rhs + __lhs; }
2641 year_month_weekday operator-(const year_month_weekday& __lhs, const months& __rhs) noexcept
2642 { return __lhs + (-__rhs); }
2645 year_month_weekday operator+(const year_month_weekday& __lhs, const years& __rhs) noexcept
2646 { return year_month_weekday{__lhs.year() + __rhs, __lhs.month(), __lhs.weekday_indexed()}; }
2649 year_month_weekday operator+(const years& __lhs, const year_month_weekday& __rhs) noexcept
2650 { return __rhs + __lhs; }
2653 year_month_weekday operator-(const year_month_weekday& __lhs, const years& __rhs) noexcept
2654 { return __lhs + (-__rhs); }
2657 inline constexpr year_month_weekday& year_month_weekday::operator+=(const months& __dm) noexcept { *this = *this + __dm; return *this; }
2658 inline constexpr year_month_weekday& year_month_weekday::operator-=(const months& __dm) noexcept { *this = *this - __dm; return *this; }
2659 inline constexpr year_month_weekday& year_month_weekday::operator+=(const years& __dy) noexcept { *this = *this + __dy; return *this; }
2660 inline constexpr year_month_weekday& year_month_weekday::operator-=(const years& __dy) noexcept { *this = *this - __dy; return *this; }
2662 class year_month_weekday_last {
2666 chrono::weekday_last __wdl;
2668 constexpr year_month_weekday_last(const chrono::year& __yval, const chrono::month& __mval,
2669 const chrono::weekday_last& __wdlval) noexcept
2670 : __y{__yval}, __m{__mval}, __wdl{__wdlval} {}
2671 constexpr year_month_weekday_last& operator+=(const months& __dm) noexcept;
2672 constexpr year_month_weekday_last& operator-=(const months& __dm) noexcept;
2673 constexpr year_month_weekday_last& operator+=(const years& __dy) noexcept;
2674 constexpr year_month_weekday_last& operator-=(const years& __dy) noexcept;
2676 inline constexpr chrono::year year() const noexcept { return __y; }
2677 inline constexpr chrono::month month() const noexcept { return __m; }
2678 inline constexpr chrono::weekday weekday() const noexcept { return __wdl.weekday(); }
2679 inline constexpr chrono::weekday_last weekday_last() const noexcept { return __wdl; }
2680 inline constexpr operator sys_days() const noexcept { return sys_days{__to_days()}; }
2681 inline explicit constexpr operator local_days() const noexcept { return local_days{__to_days()}; }
2682 inline constexpr bool ok() const noexcept { return __y.ok() && __m.ok() && __wdl.ok(); }
2684 constexpr days __to_days() const noexcept;
2689 days year_month_weekday_last::__to_days() const noexcept
2691 const sys_days __last = sys_days{__y/__m/last};
2692 return (__last - (chrono::weekday{__last} - __wdl.weekday())).time_since_epoch();
2697 bool operator==(const year_month_weekday_last& __lhs, const year_month_weekday_last& __rhs) noexcept
2698 { return __lhs.year() == __rhs.year() && __lhs.month() == __rhs.month() && __lhs.weekday_last() == __rhs.weekday_last(); }
2701 bool operator!=(const year_month_weekday_last& __lhs, const year_month_weekday_last& __rhs) noexcept
2702 { return !(__lhs == __rhs); }
2706 year_month_weekday_last operator/(const year_month& __lhs, const weekday_last& __rhs) noexcept
2707 { return year_month_weekday_last{__lhs.year(), __lhs.month(), __rhs}; }
2710 year_month_weekday_last operator/(const year& __lhs, const month_weekday_last& __rhs) noexcept
2711 { return year_month_weekday_last{__lhs, __rhs.month(), __rhs.weekday_last()}; }
2714 year_month_weekday_last operator/(int __lhs, const month_weekday_last& __rhs) noexcept
2715 { return year(__lhs) / __rhs; }
2718 year_month_weekday_last operator/(const month_weekday_last& __lhs, const year& __rhs) noexcept
2719 { return __rhs / __lhs; }
2722 year_month_weekday_last operator/(const month_weekday_last& __lhs, int __rhs) noexcept
2723 { return year(__rhs) / __lhs; }
2727 year_month_weekday_last operator+(const year_month_weekday_last& __lhs, const months& __rhs) noexcept
2728 { return (__lhs.year() / __lhs.month() + __rhs) / __lhs.weekday_last(); }
2731 year_month_weekday_last operator+(const months& __lhs, const year_month_weekday_last& __rhs) noexcept
2732 { return __rhs + __lhs; }
2735 year_month_weekday_last operator-(const year_month_weekday_last& __lhs, const months& __rhs) noexcept
2736 { return __lhs + (-__rhs); }
2739 year_month_weekday_last operator+(const year_month_weekday_last& __lhs, const years& __rhs) noexcept
2740 { return year_month_weekday_last{__lhs.year() + __rhs, __lhs.month(), __lhs.weekday_last()}; }
2743 year_month_weekday_last operator+(const years& __lhs, const year_month_weekday_last& __rhs) noexcept
2744 { return __rhs + __lhs; }
2747 year_month_weekday_last operator-(const year_month_weekday_last& __lhs, const years& __rhs) noexcept
2748 { return __lhs + (-__rhs); }
2750 inline constexpr year_month_weekday_last& year_month_weekday_last::operator+=(const months& __dm) noexcept { *this = *this + __dm; return *this; }
2751 inline constexpr year_month_weekday_last& year_month_weekday_last::operator-=(const months& __dm) noexcept { *this = *this - __dm; return *this; }
2752 inline constexpr year_month_weekday_last& year_month_weekday_last::operator+=(const years& __dy) noexcept { *this = *this + __dy; return *this; }
2753 inline constexpr year_month_weekday_last& year_month_weekday_last::operator-=(const years& __dy) noexcept { *this = *this - __dy; return *this; }
2756 template <class _Duration>
2760 static_assert(__is_duration<_Duration>::value, "template parameter of hh_mm_ss must be a std::chrono::duration");
2761 using __CommonType = common_type_t<_Duration, chrono::seconds>;
2763 static constexpr uint64_t __pow10(unsigned __exp)
2766 for (unsigned __i = 0; __i < __exp; ++__i)
2771 static constexpr unsigned __width(uint64_t __n, uint64_t __d = 10, unsigned __w = 0)
2773 if (__n >= 2 && __d != 0 && __w < 19)
2774 return 1 + __width(__n, __d % __n * 10, __w+1);
2779 static unsigned constexpr fractional_width = __width(__CommonType::period::den) < 19 ?
2780 __width(__CommonType::period::den) : 6u;
2781 using precision = duration<typename __CommonType::rep, ratio<1, __pow10(fractional_width)>>;
2783 constexpr hh_mm_ss() noexcept : hh_mm_ss{_Duration::zero()} {}
2785 constexpr explicit hh_mm_ss(_Duration __d) noexcept :
2786 __is_neg(__d < _Duration(0)),
2787 __h(duration_cast<chrono::hours> (abs(__d))),
2788 __m(duration_cast<chrono::minutes>(abs(__d) - hours())),
2789 __s(duration_cast<chrono::seconds>(abs(__d) - hours() - minutes())),
2790 __f(duration_cast<precision> (abs(__d) - hours() - minutes() - seconds()))
2793 constexpr bool is_negative() const noexcept { return __is_neg; }
2794 constexpr chrono::hours hours() const noexcept { return __h; }
2795 constexpr chrono::minutes minutes() const noexcept { return __m; }
2796 constexpr chrono::seconds seconds() const noexcept { return __s; }
2797 constexpr precision subseconds() const noexcept { return __f; }
2799 constexpr precision to_duration() const noexcept
2801 auto __dur = __h + __m + __s + __f;
2802 return __is_neg ? -__dur : __dur;
2805 constexpr explicit operator precision() const noexcept { return to_duration(); }
2810 chrono::minutes __m;
2811 chrono::seconds __s;
2815 constexpr bool is_am(const hours& __h) noexcept { return __h >= hours( 0) && __h < hours(12); }
2816 constexpr bool is_pm(const hours& __h) noexcept { return __h >= hours(12) && __h < hours(24); }
2818 constexpr hours make12(const hours& __h) noexcept
2820 if (__h == hours( 0)) return hours(12);
2821 else if (__h <= hours(12)) return __h;
2822 else return __h - hours(12);
2825 constexpr hours make24(const hours& __h, bool __is_pm) noexcept
2828 return __h == hours(12) ? __h : __h + hours(12);
2830 return __h == hours(12) ? hours(0) : __h;
2833 #endif // _LIBCPP_STD_VER > 17
2836 #if _LIBCPP_STD_VER > 11
2837 // Suffixes for duration literals [time.duration.literals]
2838 inline namespace literals
2840 inline namespace chrono_literals
2843 constexpr chrono::hours operator""h(unsigned long long __h)
2845 return chrono::hours(static_cast<chrono::hours::rep>(__h));
2848 constexpr chrono::duration<long double, ratio<3600,1>> operator""h(long double __h)
2850 return chrono::duration<long double, ratio<3600,1>>(__h);
2854 constexpr chrono::minutes operator""min(unsigned long long __m)
2856 return chrono::minutes(static_cast<chrono::minutes::rep>(__m));
2859 constexpr chrono::duration<long double, ratio<60,1>> operator""min(long double __m)
2861 return chrono::duration<long double, ratio<60,1>> (__m);
2865 constexpr chrono::seconds operator""s(unsigned long long __s)
2867 return chrono::seconds(static_cast<chrono::seconds::rep>(__s));
2870 constexpr chrono::duration<long double> operator""s(long double __s)
2872 return chrono::duration<long double> (__s);
2876 constexpr chrono::milliseconds operator""ms(unsigned long long __ms)
2878 return chrono::milliseconds(static_cast<chrono::milliseconds::rep>(__ms));
2881 constexpr chrono::duration<long double, milli> operator""ms(long double __ms)
2883 return chrono::duration<long double, milli>(__ms);
2887 constexpr chrono::microseconds operator""us(unsigned long long __us)
2889 return chrono::microseconds(static_cast<chrono::microseconds::rep>(__us));
2892 constexpr chrono::duration<long double, micro> operator""us(long double __us)
2894 return chrono::duration<long double, micro> (__us);
2898 constexpr chrono::nanoseconds operator""ns(unsigned long long __ns)
2900 return chrono::nanoseconds(static_cast<chrono::nanoseconds::rep>(__ns));
2903 constexpr chrono::duration<long double, nano> operator""ns(long double __ns)
2905 return chrono::duration<long double, nano> (__ns);
2908 #if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CXX20_CHRONO_LITERALS)
2909 constexpr chrono::day operator ""d(unsigned long long __d) noexcept
2911 return chrono::day(static_cast<unsigned>(__d));
2914 constexpr chrono::year operator ""y(unsigned long long __y) noexcept
2916 return chrono::year(static_cast<int>(__y));
2921 namespace chrono { // hoist the literals into namespace std::chrono
2922 using namespace literals::chrono_literals;
2927 _LIBCPP_END_NAMESPACE_STD
2929 #ifndef _LIBCPP_CXX03_LANG
2930 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
2931 struct _FilesystemClock {
2932 #if !defined(_LIBCPP_HAS_NO_INT128)
2933 typedef __int128_t rep;
2934 typedef nano period;
2936 typedef long long rep;
2937 typedef nano period;
2940 typedef chrono::duration<rep, period> duration;
2941 typedef chrono::time_point<_FilesystemClock> time_point;
2943 _LIBCPP_EXPORTED_FROM_ABI
2944 static _LIBCPP_CONSTEXPR_AFTER_CXX11 const bool is_steady = false;
2946 _LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_FUNC_VIS static time_point now() noexcept;
2948 _LIBCPP_INLINE_VISIBILITY
2949 static time_t to_time_t(const time_point& __t) noexcept {
2950 typedef chrono::duration<rep> __secs;
2952 chrono::duration_cast<__secs>(__t.time_since_epoch()).count());
2955 _LIBCPP_INLINE_VISIBILITY
2956 static time_point from_time_t(time_t __t) noexcept {
2957 typedef chrono::duration<rep> __secs;
2958 return time_point(__secs(__t));
2961 _LIBCPP_END_NAMESPACE_FILESYSTEM
2962 #endif // !_LIBCPP_CXX03_LANG
2966 #endif // _LIBCPP_CHRONO