1// -*- C++ -*-
2//===---------------------------- chrono ----------------------------------===//
3//
4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5// See https://llvm.org/LICENSE.txt for license information.
6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef _LIBCPP_CHRONO
11#define _LIBCPP_CHRONO
12
13/*
14 chrono synopsis
15
16namespace std
17{
18namespace chrono
19{
20
21template <class ToDuration, class Rep, class Period>
22constexpr
23ToDuration
24duration_cast(const duration<Rep, Period>& fd);
25
26template <class Rep> struct treat_as_floating_point : is_floating_point<Rep> {};
27
28template <class Rep> inline constexpr bool treat_as_floating_point_v
29 = treat_as_floating_point<Rep>::value; // C++17
30
31template <class Rep>
32struct duration_values
33{
34public:
35 static constexpr Rep zero(); // noexcept in C++20
36 static constexpr Rep max(); // noexcept in C++20
37 static constexpr Rep min(); // noexcept in C++20
38};
39
40// duration
41
42template <class Rep, class Period = ratio<1>>
43class duration
44{
45 static_assert(!__is_duration<Rep>::value, "A duration representation can not be a duration");
46 static_assert(__is_ratio<Period>::value, "Second template parameter of duration must be a std::ratio");
47 static_assert(Period::num > 0, "duration period must be positive");
48public:
49 typedef Rep rep;
50 typedef typename _Period::type period;
51
52 constexpr duration() = default;
53 template <class Rep2>
54 constexpr explicit duration(const Rep2& r,
55 typename enable_if
56 <
57 is_convertible<Rep2, rep>::value &&
58 (treat_as_floating_point<rep>::value ||
59 !treat_as_floating_point<rep>::value && !treat_as_floating_point<Rep2>::value)
60 >::type* = 0);
61
62 // conversions
63 template <class Rep2, class Period2>
64 constexpr duration(const duration<Rep2, Period2>& d,
65 typename enable_if
66 <
67 treat_as_floating_point<rep>::value ||
68 ratio_divide<Period2, period>::type::den == 1
69 >::type* = 0);
70
71 // observer
72
73 constexpr rep count() const;
74
75 // arithmetic
76
77 constexpr common_type<duration>::type operator+() const;
78 constexpr common_type<duration>::type operator-() const;
79 constexpr duration& operator++(); // constexpr in C++17
80 constexpr duration operator++(int); // constexpr in C++17
81 constexpr duration& operator--(); // constexpr in C++17
82 constexpr duration operator--(int); // constexpr in C++17
83
84 constexpr duration& operator+=(const duration& d); // constexpr in C++17
85 constexpr duration& operator-=(const duration& d); // constexpr in C++17
86
87 duration& operator*=(const rep& rhs); // constexpr in C++17
88 duration& operator/=(const rep& rhs); // constexpr in C++17
89 duration& operator%=(const rep& rhs); // constexpr in C++17
90 duration& operator%=(const duration& rhs); // constexpr in C++17
91
92 // special values
93
94 static constexpr duration zero(); // noexcept in C++20
95 static constexpr duration min(); // noexcept in C++20
96 static constexpr duration max(); // noexcept in C++20
97};
98
99typedef duration<long long, nano> nanoseconds;
100typedef duration<long long, micro> microseconds;
101typedef duration<long long, milli> milliseconds;
102typedef duration<long long > seconds;
103typedef duration< long, ratio< 60> > minutes;
104typedef duration< long, ratio<3600> > hours;
105
106template <class Clock, class Duration = typename Clock::duration>
107class time_point
108{
109public:
110 typedef Clock clock;
111 typedef Duration duration;
112 typedef typename duration::rep rep;
113 typedef typename duration::period period;
114private:
115 duration d_; // exposition only
116
117public:
118 time_point(); // has value "epoch" // constexpr in C++14
119 explicit time_point(const duration& d); // same as time_point() + d // constexpr in C++14
120
121 // conversions
122 template <class Duration2>
123 time_point(const time_point<clock, Duration2>& t); // constexpr in C++14
124
125 // observer
126
127 duration time_since_epoch() const; // constexpr in C++14
128
129 // arithmetic
130
131 time_point& operator+=(const duration& d); // constexpr in C++17
132 time_point& operator-=(const duration& d); // constexpr in C++17
133
134 // special values
135
136 static constexpr time_point min(); // noexcept in C++20
137 static constexpr time_point max(); // noexcept in C++20
138};
139
140} // chrono
141
142// common_type traits
143template <class Rep1, class Period1, class Rep2, class Period2>
144 struct common_type<chrono::duration<Rep1, Period1>, chrono::duration<Rep2, Period2>>;
145
146template <class Clock, class Duration1, class Duration2>
147 struct common_type<chrono::time_point<Clock, Duration1>, chrono::time_point<Clock, Duration2>>;
148
149namespace chrono {
150
151
152template<class T> struct is_clock; // C++20
153template<class T> inline constexpr bool is_clock_v = is_clock<T>::value; // C++20
154
155
156// duration arithmetic
157template <class Rep1, class Period1, class Rep2, class Period2>
158 constexpr
159 typename common_type<duration<Rep1, Period1>, duration<Rep2, Period2>>::type
160 operator+(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
161template <class Rep1, class Period1, class Rep2, class Period2>
162 constexpr
163 typename common_type<duration<Rep1, Period1>, duration<Rep2, Period2>>::type
164 operator-(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
165template <class Rep1, class Period, class Rep2>
166 constexpr
167 duration<typename common_type<Rep1, Rep2>::type, Period>
168 operator*(const duration<Rep1, Period>& d, const Rep2& s);
169template <class Rep1, class Period, class Rep2>
170 constexpr
171 duration<typename common_type<Rep1, Rep2>::type, Period>
172 operator*(const Rep1& s, const duration<Rep2, Period>& d);
173template <class Rep1, class Period, class Rep2>
174 constexpr
175 duration<typename common_type<Rep1, Rep2>::type, Period>
176 operator/(const duration<Rep1, Period>& d, const Rep2& s);
177template <class Rep1, class Period1, class Rep2, class Period2>
178 constexpr
179 typename common_type<Rep1, Rep2>::type
180 operator/(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
181
182// duration comparisons
183template <class Rep1, class Period1, class Rep2, class Period2>
184 constexpr
185 bool operator==(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
186template <class Rep1, class Period1, class Rep2, class Period2>
187 constexpr
188 bool operator!=(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
189template <class Rep1, class Period1, class Rep2, class Period2>
190 constexpr
191 bool operator< (const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
192template <class Rep1, class Period1, class Rep2, class Period2>
193 constexpr
194 bool operator<=(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
195template <class Rep1, class Period1, class Rep2, class Period2>
196 constexpr
197 bool operator> (const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
198template <class Rep1, class Period1, class Rep2, class Period2>
199 constexpr
200 bool operator>=(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
201
202// duration_cast
203template <class ToDuration, class Rep, class Period>
204 ToDuration duration_cast(const duration<Rep, Period>& d);
205
206template <class ToDuration, class Rep, class Period>
207 constexpr ToDuration floor(const duration<Rep, Period>& d); // C++17
208template <class ToDuration, class Rep, class Period>
209 constexpr ToDuration ceil(const duration<Rep, Period>& d); // C++17
210template <class ToDuration, class Rep, class Period>
211 constexpr ToDuration round(const duration<Rep, Period>& d); // C++17
212
213// duration I/O is elsewhere
214
215// time_point arithmetic (all constexpr in C++14)
216template <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);
219template <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);
222template <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);
225template <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);
228
229// time_point comparisons (all constexpr in C++14)
230template <class Clock, class Duration1, class Duration2>
231 bool operator==(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
232template <class Clock, class Duration1, class Duration2>
233 bool operator!=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
234template <class Clock, class Duration1, class Duration2>
235 bool operator< (const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
236template <class Clock, class Duration1, class Duration2>
237 bool operator<=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
238template <class Clock, class Duration1, class Duration2>
239 bool operator> (const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
240template <class Clock, class Duration1, class Duration2>
241 bool operator>=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
242
243// time_point_cast (constexpr in C++14)
244
245template <class ToDuration, class Clock, class Duration>
246 time_point<Clock, ToDuration> time_point_cast(const time_point<Clock, Duration>& t);
247
248template <class ToDuration, class Clock, class Duration>
249 constexpr time_point<Clock, ToDuration>
250 floor(const time_point<Clock, Duration>& tp); // C++17
251
252template <class ToDuration, class Clock, class Duration>
253 constexpr time_point<Clock, ToDuration>
254 ceil(const time_point<Clock, Duration>& tp); // C++17
255
256template <class ToDuration, class Clock, class Duration>
257 constexpr time_point<Clock, ToDuration>
258 round(const time_point<Clock, Duration>& tp); // C++17
259
260template <class Rep, class Period>
261 constexpr duration<Rep, Period> abs(duration<Rep, Period> d); // C++17
262
263// Clocks
264
265class system_clock
266{
267public:
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
273
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;
277};
278
279template <class Duration>
280 using sys_time = time_point<system_clock, Duration>; // C++20
281using sys_seconds = sys_time<seconds>; // C++20
282using sys_days = sys_time<days>; // C++20
283
284class utc_clock; // C++20
285
286template <class Duration>
287 using utc_time = time_point<utc_clock, Duration>; // C++20
288using utc_seconds = utc_time<seconds>; // C++20
289
290class tai_clock; // C++20
291
292template <class Duration>
293 using tai_time = time_point<tai_clock, Duration>; // C++20
294using tai_seconds = tai_time<seconds>; // C++20
295
296class file_clock; // C++20
297
298template<class Duration>
299 using file_time = time_point<file_clock, Duration>; // C++20
300
301class steady_clock
302{
303public:
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
309
310 static time_point now() noexcept;
311};
312
313typedef steady_clock high_resolution_clock;
314
315// 25.7.8, local time // C++20
316struct local_t {};
317template<class Duration>
318 using local_time = time_point<local_t, Duration>;
319using local_seconds = local_time<seconds>;
320using local_days = local_time<days>;
321
322// 25.7.9, time_point conversions template<class DestClock, class SourceClock> // C++20
323struct clock_time_conversion;
324
325template<class DestClock, class SourceClock, class Duration>
326 auto clock_cast(const time_point<SourceClock, Duration>& t);
327
328// 25.8.2, class last_spec // C++20
329struct last_spec;
330
331// 25.8.3, class day // C++20
332
333class day;
334constexpr bool operator==(const day& x, const day& y) noexcept;
335constexpr bool operator!=(const day& x, const day& y) noexcept;
336constexpr bool operator< (const day& x, const day& y) noexcept;
337constexpr bool operator> (const day& x, const day& y) noexcept;
338constexpr bool operator<=(const day& x, const day& y) noexcept;
339constexpr bool operator>=(const day& x, const day& y) noexcept;
340constexpr day operator+(const day& x, const days& y) noexcept;
341constexpr day operator+(const days& x, const day& y) noexcept;
342constexpr day operator-(const day& x, const days& y) noexcept;
343constexpr days operator-(const day& x, const day& y) noexcept;
344
345// 25.8.4, class month // C++20
346class month;
347constexpr bool operator==(const month& x, const month& y) noexcept;
348constexpr bool operator!=(const month& x, const month& y) noexcept;
349constexpr bool operator< (const month& x, const month& y) noexcept;
350constexpr bool operator> (const month& x, const month& y) noexcept;
351constexpr bool operator<=(const month& x, const month& y) noexcept;
352constexpr bool operator>=(const month& x, const month& y) noexcept;
353constexpr month operator+(const month& x, const months& y) noexcept;
354constexpr month operator+(const months& x, const month& y) noexcept;
355constexpr month operator-(const month& x, const months& y) noexcept;
356constexpr months operator-(const month& x, const month& y) noexcept;
357
358// 25.8.5, class year // C++20
359class year;
360constexpr bool operator==(const year& x, const year& y) noexcept;
361constexpr bool operator!=(const year& x, const year& y) noexcept;
362constexpr bool operator< (const year& x, const year& y) noexcept;
363constexpr bool operator> (const year& x, const year& y) noexcept;
364constexpr bool operator<=(const year& x, const year& y) noexcept;
365constexpr bool operator>=(const year& x, const year& y) noexcept;
366constexpr year operator+(const year& x, const years& y) noexcept;
367constexpr year operator+(const years& x, const year& y) noexcept;
368constexpr year operator-(const year& x, const years& y) noexcept;
369constexpr years operator-(const year& x, const year& y) noexcept;
370
371// 25.8.6, class weekday // C++20
372class weekday;
373
374constexpr bool operator==(const weekday& x, const weekday& y) noexcept;
375constexpr bool operator!=(const weekday& x, const weekday& y) noexcept;
376constexpr weekday operator+(const weekday& x, const days& y) noexcept;
377constexpr weekday operator+(const days& x, const weekday& y) noexcept;
378constexpr weekday operator-(const weekday& x, const days& y) noexcept;
379constexpr days operator-(const weekday& x, const weekday& y) noexcept;
380
381// 25.8.7, class weekday_indexed // C++20
382
383class weekday_indexed;
384constexpr bool operator==(const weekday_indexed& x, const weekday_indexed& y) noexcept;
385constexpr bool operator!=(const weekday_indexed& x, const weekday_indexed& y) noexcept;
386
387// 25.8.8, class weekday_last // C++20
388class weekday_last;
389
390constexpr bool operator==(const weekday_last& x, const weekday_last& y) noexcept;
391constexpr bool operator!=(const weekday_last& x, const weekday_last& y) noexcept;
392
393// 25.8.9, class month_day // C++20
394class month_day;
395
396constexpr bool operator==(const month_day& x, const month_day& y) noexcept;
397constexpr bool operator!=(const month_day& x, const month_day& y) noexcept;
398constexpr bool operator< (const month_day& x, const month_day& y) noexcept;
399constexpr bool operator> (const month_day& x, const month_day& y) noexcept;
400constexpr bool operator<=(const month_day& x, const month_day& y) noexcept;
401constexpr bool operator>=(const month_day& x, const month_day& y) noexcept;
402
403
404// 25.8.10, class month_day_last // C++20
405class month_day_last;
406
407constexpr bool operator==(const month_day_last& x, const month_day_last& y) noexcept;
408constexpr bool operator!=(const month_day_last& x, const month_day_last& y) noexcept;
409constexpr bool operator< (const month_day_last& x, const month_day_last& y) noexcept;
410constexpr bool operator> (const month_day_last& x, const month_day_last& y) noexcept;
411constexpr bool operator<=(const month_day_last& x, const month_day_last& y) noexcept;
412constexpr bool operator>=(const month_day_last& x, const month_day_last& y) noexcept;
413
414// 25.8.11, class month_weekday // C++20
415class month_weekday;
416
417constexpr bool operator==(const month_weekday& x, const month_weekday& y) noexcept;
418constexpr bool operator!=(const month_weekday& x, const month_weekday& y) noexcept;
419
420// 25.8.12, class month_weekday_last // C++20
421class month_weekday_last;
422
423constexpr bool operator==(const month_weekday_last& x, const month_weekday_last& y) noexcept;
424constexpr bool operator!=(const month_weekday_last& x, const month_weekday_last& y) noexcept;
425
426
427// 25.8.13, class year_month // C++20
428class year_month;
429
430constexpr bool operator==(const year_month& x, const year_month& y) noexcept;
431constexpr bool operator!=(const year_month& x, const year_month& y) noexcept;
432constexpr bool operator< (const year_month& x, const year_month& y) noexcept;
433constexpr bool operator> (const year_month& x, const year_month& y) noexcept;
434constexpr bool operator<=(const year_month& x, const year_month& y) noexcept;
435constexpr bool operator>=(const year_month& x, const year_month& y) noexcept;
436
437constexpr year_month operator+(const year_month& ym, const months& dm) noexcept;
438constexpr year_month operator+(const months& dm, const year_month& ym) noexcept;
439constexpr year_month operator-(const year_month& ym, const months& dm) noexcept;
440constexpr months operator-(const year_month& x, const year_month& y) noexcept;
441constexpr year_month operator+(const year_month& ym, const years& dy) noexcept;
442constexpr year_month operator+(const years& dy, const year_month& ym) noexcept;
443constexpr year_month operator-(const year_month& ym, const years& dy) noexcept;
444
445// 25.8.14, class year_month_day class // C++20
446year_month_day;
447
448constexpr bool operator==(const year_month_day& x, const year_month_day& y) noexcept;
449constexpr bool operator!=(const year_month_day& x, const year_month_day& y) noexcept;
450constexpr bool operator< (const year_month_day& x, const year_month_day& y) noexcept;
451constexpr bool operator> (const year_month_day& x, const year_month_day& y) noexcept;
452constexpr bool operator<=(const year_month_day& x, const year_month_day& y) noexcept;
453constexpr bool operator>=(const year_month_day& x, const year_month_day& y) noexcept;
454
455constexpr year_month_day operator+(const year_month_day& ymd, const months& dm) noexcept;
456constexpr year_month_day operator+(const months& dm, const year_month_day& ymd) noexcept;
457constexpr year_month_day operator+(const year_month_day& ymd, const years& dy) noexcept;
458constexpr year_month_day operator+(const years& dy, const year_month_day& ymd) noexcept;
459constexpr year_month_day operator-(const year_month_day& ymd, const months& dm) noexcept;
460constexpr year_month_day operator-(const year_month_day& ymd, const years& dy) noexcept;
461
462
463// 25.8.15, class year_month_day_last // C++20
464class year_month_day_last;
465
466constexpr bool operator==(const year_month_day_last& x,
467 const year_month_day_last& y) noexcept;
468constexpr bool operator!=(const year_month_day_last& x,
469 const year_month_day_last& y) noexcept;
470constexpr bool operator< (const year_month_day_last& x,
471 const year_month_day_last& y) noexcept;
472constexpr bool operator> (const year_month_day_last& x,
473 const year_month_day_last& y) noexcept;
474constexpr bool operator<=(const year_month_day_last& x,
475 const year_month_day_last& y) noexcept;
476constexpr bool operator>=(const year_month_day_last& x,
477 const year_month_day_last& y) noexcept;
478
479constexpr year_month_day_last
480 operator+(const year_month_day_last& ymdl, const months& dm) noexcept;
481constexpr year_month_day_last
482 operator+(const months& dm, const year_month_day_last& ymdl) noexcept;
483constexpr year_month_day_last
484 operator+(const year_month_day_last& ymdl, const years& dy) noexcept;
485constexpr year_month_day_last
486 operator+(const years& dy, const year_month_day_last& ymdl) noexcept;
487constexpr year_month_day_last
488 operator-(const year_month_day_last& ymdl, const months& dm) noexcept;
489constexpr year_month_day_last
490 operator-(const year_month_day_last& ymdl, const years& dy) noexcept;
491
492// 25.8.16, class year_month_weekday // C++20
493class year_month_weekday;
494
495constexpr bool operator==(const year_month_weekday& x,
496 const year_month_weekday& y) noexcept;
497constexpr bool operator!=(const year_month_weekday& x,
498 const year_month_weekday& y) noexcept;
499
500constexpr year_month_weekday
501 operator+(const year_month_weekday& ymwd, const months& dm) noexcept;
502constexpr year_month_weekday
503 operator+(const months& dm, const year_month_weekday& ymwd) noexcept;
504constexpr year_month_weekday
505 operator+(const year_month_weekday& ymwd, const years& dy) noexcept;
506constexpr year_month_weekday
507 operator+(const years& dy, const year_month_weekday& ymwd) noexcept;
508constexpr year_month_weekday
509 operator-(const year_month_weekday& ymwd, const months& dm) noexcept;
510constexpr year_month_weekday
511 operator-(const year_month_weekday& ymwd, const years& dy) noexcept;
512
513// 25.8.17, class year_month_weekday_last // C++20
514class year_month_weekday_last;
515
516constexpr bool operator==(const year_month_weekday_last& x,
517 const year_month_weekday_last& y) noexcept;
518constexpr bool operator!=(const year_month_weekday_last& x,
519 const year_month_weekday_last& y) noexcept;
520constexpr year_month_weekday_last
521 operator+(const year_month_weekday_last& ymwdl, const months& dm) noexcept;
522constexpr year_month_weekday_last
523 operator+(const months& dm, const year_month_weekday_last& ymwdl) noexcept;
524constexpr year_month_weekday_last
525 operator+(const year_month_weekday_last& ymwdl, const years& dy) noexcept;
526constexpr year_month_weekday_last
527 operator+(const years& dy, const year_month_weekday_last& ymwdl) noexcept;
528constexpr year_month_weekday_last
529 operator-(const year_month_weekday_last& ymwdl, const months& dm) noexcept;
530constexpr year_month_weekday_last
531 operator-(const year_month_weekday_last& ymwdl, const years& dy) noexcept;
532
533// 25.8.18, civil calendar conventional syntax operators // C++20
534constexpr year_month
535 operator/(const year& y, const month& m) noexcept;
536constexpr year_month
537 operator/(const year& y, int m) noexcept;
538constexpr month_day
539 operator/(const month& m, const day& d) noexcept;
540constexpr month_day
541 operator/(const month& m, int d) noexcept;
542constexpr month_day
543 operator/(int m, const day& d) noexcept;
544constexpr month_day
545 operator/(const day& d, const month& m) noexcept;
546constexpr month_day
547 operator/(const day& d, int m) noexcept;
548constexpr month_day_last
549 operator/(const month& m, last_spec) noexcept;
550constexpr month_day_last
551 operator/(int m, last_spec) noexcept;
552constexpr month_day_last
553 operator/(last_spec, const month& m) noexcept;
554constexpr month_day_last
555 operator/(last_spec, int m) noexcept;
556constexpr month_weekday
557 operator/(const month& m, const weekday_indexed& wdi) noexcept;
558constexpr month_weekday
559 operator/(int m, const weekday_indexed& wdi) noexcept;
560constexpr month_weekday
561 operator/(const weekday_indexed& wdi, const month& m) noexcept;
562constexpr month_weekday
563 operator/(const weekday_indexed& wdi, int m) noexcept;
564constexpr month_weekday_last
565 operator/(const month& m, const weekday_last& wdl) noexcept;
566constexpr month_weekday_last
567 operator/(int m, const weekday_last& wdl) noexcept;
568constexpr month_weekday_last
569 operator/(const weekday_last& wdl, const month& m) noexcept;
570constexpr month_weekday_last
571 operator/(const weekday_last& wdl, int m) noexcept;
572constexpr year_month_day
573 operator/(const year_month& ym, const day& d) noexcept;
574constexpr year_month_day
575 operator/(const year_month& ym, int d) noexcept;
576constexpr year_month_day
577 operator/(const year& y, const month_day& md) noexcept;
578constexpr year_month_day
579 operator/(int y, const month_day& md) noexcept;
580constexpr year_month_day
581 operator/(const month_day& md, const year& y) noexcept;
582constexpr year_month_day
583 operator/(const month_day& md, int y) noexcept;
584constexpr year_month_day_last
585 operator/(const year_month& ym, last_spec) noexcept;
586constexpr year_month_day_last
587 operator/(const year& y, const month_day_last& mdl) noexcept;
588constexpr year_month_day_last
589 operator/(int y, const month_day_last& mdl) noexcept;
590constexpr year_month_day_last
591 operator/(const month_day_last& mdl, const year& y) noexcept;
592constexpr year_month_day_last
593 operator/(const month_day_last& mdl, int y) noexcept;
594constexpr year_month_weekday
595 operator/(const year_month& ym, const weekday_indexed& wdi) noexcept;
596constexpr year_month_weekday
597 operator/(const year& y, const month_weekday& mwd) noexcept;
598constexpr year_month_weekday
599 operator/(int y, const month_weekday& mwd) noexcept;
600constexpr year_month_weekday
601 operator/(const month_weekday& mwd, const year& y) noexcept;
602constexpr year_month_weekday
603 operator/(const month_weekday& mwd, int y) noexcept;
604constexpr year_month_weekday_last
605 operator/(const year_month& ym, const weekday_last& wdl) noexcept;
606constexpr year_month_weekday_last
607 operator/(const year& y, const month_weekday_last& mwdl) noexcept;
608constexpr year_month_weekday_last
609 operator/(int y, const month_weekday_last& mwdl) noexcept;
610constexpr year_month_weekday_last
611 operator/(const month_weekday_last& mwdl, const year& y) noexcept;
612constexpr year_month_weekday_last
613 operator/(const month_weekday_last& mwdl, int y) noexcept;
614
615// 25.9, class template time_of_day // C++20
616template<class Duration> class time_of_day;
617
618template<> class time_of_day<hours>;
619template<> class time_of_day<minutes>;
620template<> class time_of_day<seconds>;
621template<class Rep, class Period> class time_of_day<duration<Rep, Period>>;
622
623// 25.10.2, time zone database // C++20
624struct tzdb;
625class tzdb_list;
626
627// 25.10.2.3, time zone database access // C++20
628const tzdb& get_tzdb();
629tzdb_list& get_tzdb_list();
630const time_zone* locate_zone(string_view tz_name);
631const time_zone* current_zone();
632
633// 25.10.2.4, remote time zone database support // C++20
634const tzdb& reload_tzdb();
635string remote_version();
636
637// 25.10.3, exception classes // C++20
638class nonexistent_local_time;
639class ambiguous_local_time;
640
641// 25.10.4, information classes // C++20
642struct sys_info;
643struct local_info;
644
645// 25.10.5, class time_zone // C++20
646enum class choose {earliest, latest};
647class time_zone;
648bool operator==(const time_zone& x, const time_zone& y) noexcept;
649bool operator!=(const time_zone& x, const time_zone& y) noexcept;
650bool operator<(const time_zone& x, const time_zone& y) noexcept;
651bool operator>(const time_zone& x, const time_zone& y) noexcept;
652bool operator<=(const time_zone& x, const time_zone& y) noexcept;
653bool operator>=(const time_zone& x, const time_zone& y) noexcept;
654
655// 25.10.6, class template zoned_traits // C++20
656template<class T> struct zoned_traits;
657
658// 25.10.7, class template zoned_time // C++20
659template<class Duration, class TimeZonePtr = const time_zone*> class zoned_time;
660using zoned_seconds = zoned_time<seconds>;
661
662template<class Duration1, class Duration2, class TimeZonePtr>
663 bool operator==(const zoned_time<Duration1, TimeZonePtr>& x,
664 const zoned_time<Duration2, TimeZonePtr>& y);
665template<class Duration1, class Duration2, class TimeZonePtr>
666 bool operator!=(const zoned_time<Duration1, TimeZonePtr>& x,
667 const zoned_time<Duration2, TimeZonePtr>& y);
668
669// 25.10.8, leap second support // C++20
670class leap;
671
672bool operator==(const leap& x, const leap& y);
673bool operator!=(const leap& x, const leap& y);
674bool operator< (const leap& x, const leap& y);
675bool operator> (const leap& x, const leap& y);
676bool operator<=(const leap& x, const leap& y);
677bool operator>=(const leap& x, const leap& y);
678template<class Duration>
679 bool operator==(const leap& x, const sys_time<Duration>& y);
680template<class Duration>
681 bool operator==(const sys_time<Duration>& x, const leap& y);
682template<class Duration>
683 bool operator!=(const leap& x, const sys_time<Duration>& y);
684template<class Duration>
685 bool operator!=(const sys_time<Duration>& x, const leap& y);
686template<class Duration>
687 bool operator< (const leap& x, const sys_time<Duration>& y);
688template<class Duration>
689 bool operator< (const sys_time<Duration>& x, const leap& y);
690template<class Duration>
691 bool operator> (const leap& x, const sys_time<Duration>& y);
692template<class Duration>
693 bool operator> (const sys_time<Duration>& x, const leap& y);
694template<class Duration>
695 bool operator<=(const leap& x, const sys_time<Duration>& y);
696template<class Duration>
697 bool operator<=(const sys_time<Duration>& x, const leap& y);
698template<class Duration>
699 bool operator>=(const leap& x, const sys_time<Duration>& y);
700template<class Duration>
701 bool operator>=(const sys_time<Duration>& x, const leap& y);
702
703// 25.10.9, class link // C++20
704class link;
705bool operator==(const link& x, const link& y);
706bool operator!=(const link& x, const link& y);
707bool operator< (const link& x, const link& y);
708bool operator> (const link& x, const link& y);
709bool operator<=(const link& x, const link& y);
710bool operator>=(const link& x, const link& y);
711
712// 25.11, formatting // C++20
713template<class charT, class Streamable>
714 basic_string<charT>
715 format(const charT* fmt, const Streamable& s);
716
717template<class charT, class Streamable>
718 basic_string<charT>
719 format(const locale& loc, const charT* fmt, const Streamable& s);
720
721template<class charT, class traits, class Alloc, class Streamable>
722 basic_string<charT, traits, Alloc>
723 format(const basic_string<charT, traits, Alloc>& fmt, const Streamable& s);
724
725template<class charT, class traits, class Alloc, class Streamable>
726 basic_string<charT, traits, Alloc>
727 format(const locale& loc, const basic_string<charT, traits, Alloc>& fmt,
728 const Streamable& s);
729
730// 25.12, parsing // C++20
731template<class charT, class traits, class Alloc, class Parsable>
732unspecified
733 parse(const basic_string<charT, traits, Alloc>& format, Parsable& tp);
734
735template<class charT, class traits, class Alloc, class Parsable>
736unspecified
737 parse(const basic_string<charT, traits, Alloc>& format, Parsable& tp,
738 basic_string<charT, traits, Alloc>& abbrev);
739
740template<class charT, class traits, class Alloc, class Parsable>
741unspecified
742 parse(const basic_string<charT, traits, Alloc>& format, Parsable& tp,
743 minutes& offset);
744
745template<class charT, class traits, class Alloc, class Parsable>
746unspecified
747 parse(const basic_string<charT, traits, Alloc>& format, Parsable& tp,
748 basic_string<charT, traits, Alloc>& abbrev, minutes& offset);
749
750// calendrical constants
751inline constexpr last_spec last{}; // C++20
752inline constexpr chrono::weekday Sunday{0}; // C++20
753inline constexpr chrono::weekday Monday{1}; // C++20
754inline constexpr chrono::weekday Tuesday{2}; // C++20
755inline constexpr chrono::weekday Wednesday{3}; // C++20
756inline constexpr chrono::weekday Thursday{4}; // C++20
757inline constexpr chrono::weekday Friday{5}; // C++20
758inline constexpr chrono::weekday Saturday{6}; // C++20
759
760inline constexpr chrono::month January{1}; // C++20
761inline constexpr chrono::month February{2}; // C++20
762inline constexpr chrono::month March{3}; // C++20
763inline constexpr chrono::month April{4}; // C++20
764inline constexpr chrono::month May{5}; // C++20
765inline constexpr chrono::month June{6}; // C++20
766inline constexpr chrono::month July{7}; // C++20
767inline constexpr chrono::month August{8}; // C++20
768inline constexpr chrono::month September{9}; // C++20
769inline constexpr chrono::month October{10}; // C++20
770inline constexpr chrono::month November{11}; // C++20
771inline constexpr chrono::month December{12}; // C++20
772} // chrono
773
774inline namespace literals {
775 inline namespace chrono_literals {
776constexpr chrono::hours operator ""h(unsigned long long); // C++14
777constexpr chrono::duration<unspecified , ratio<3600,1>> operator ""h(long double); // C++14
778constexpr chrono::minutes operator ""min(unsigned long long); // C++14
779constexpr chrono::duration<unspecified , ratio<60,1>> operator ""min(long double); // C++14
780constexpr chrono::seconds operator ""s(unsigned long long); // C++14
781constexpr chrono::duration<unspecified > operator ""s(long double); // C++14
782constexpr chrono::milliseconds operator ""ms(unsigned long long); // C++14
783constexpr chrono::duration<unspecified , milli> operator ""ms(long double); // C++14
784constexpr chrono::microseconds operator ""us(unsigned long long); // C++14
785constexpr chrono::duration<unspecified , micro> operator ""us(long double); // C++14
786constexpr chrono::nanoseconds operator ""ns(unsigned long long); // C++14
787constexpr chrono::duration<unspecified , nano> operator ""ns(long double); // C++14
788constexpr chrono::day operator ""d(unsigned long long d) noexcept; // C++20
789constexpr chrono::year operator ""y(unsigned long long y) noexcept; // C++20
790} // chrono_literals
791} // literals
792
793} // std
794*/
795
796#include <__config>
797#include <ctime>
798#include <type_traits>
799#include <ratio>
800#include <limits>
801#include <version>
802
803#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
804#pragma GCC system_header
805#endif
806
807_LIBCPP_PUSH_MACROS
808#include <__undef_macros>
809
810#ifndef _LIBCPP_CXX03_LANG
811_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
812struct _FilesystemClock;
813_LIBCPP_END_NAMESPACE_FILESYSTEM
814#endif // !_LIBCPP_CXX03_LANG
815
816_LIBCPP_BEGIN_NAMESPACE_STD
817
818namespace chrono
819{
820
821template <class _Rep, class _Period = ratio<1> > class _LIBCPP_TEMPLATE_VIS duration;
822
823template <class _Tp>
824struct __is_duration : false_type {};
825
826template <class _Rep, class _Period>
827struct __is_duration<duration<_Rep, _Period> > : true_type {};
828
829template <class _Rep, class _Period>
830struct __is_duration<const duration<_Rep, _Period> > : true_type {};
831
832template <class _Rep, class _Period>
833struct __is_duration<volatile duration<_Rep, _Period> > : true_type {};
834
835template <class _Rep, class _Period>
836struct __is_duration<const volatile duration<_Rep, _Period> > : true_type {};
837
838} // chrono
839
840template <class _Rep1, class _Period1, class _Rep2, class _Period2>
841struct _LIBCPP_TEMPLATE_VIS common_type<chrono::duration<_Rep1, _Period1>,
842 chrono::duration<_Rep2, _Period2> >
843{
844 typedef chrono::duration<typename common_type<_Rep1, _Rep2>::type,
845 typename __ratio_gcd<_Period1, _Period2>::type> type;
846};
847
848namespace chrono {
849
850// duration_cast
851
852template <class _FromDuration, class _ToDuration,
853 class _Period = typename ratio_divide<typename _FromDuration::period, typename _ToDuration::period>::type,
854 bool = _Period::num == 1,
855 bool = _Period::den == 1>
856struct __duration_cast;
857
858template <class _FromDuration, class _ToDuration, class _Period>
859struct __duration_cast<_FromDuration, _ToDuration, _Period, true, true>
860{
861 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
862 _ToDuration operator()(const _FromDuration& __fd) const
863 {
864 return _ToDuration(static_cast<typename _ToDuration::rep>(__fd.count()));
865 }
866};
867
868template <class _FromDuration, class _ToDuration, class _Period>
869struct __duration_cast<_FromDuration, _ToDuration, _Period, true, false>
870{
871 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
872 _ToDuration operator()(const _FromDuration& __fd) const
873 {
874 typedef typename common_type<typename _ToDuration::rep, typename _FromDuration::rep, intmax_t>::type _Ct;
875 return _ToDuration(static_cast<typename _ToDuration::rep>(
876 static_cast<_Ct>(__fd.count()) / static_cast<_Ct>(_Period::den)));
877 }
878};
879
880template <class _FromDuration, class _ToDuration, class _Period>
881struct __duration_cast<_FromDuration, _ToDuration, _Period, false, true>
882{
883 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
884 _ToDuration operator()(const _FromDuration& __fd) const
885 {
886 typedef typename common_type<typename _ToDuration::rep, typename _FromDuration::rep, intmax_t>::type _Ct;
887 return _ToDuration(static_cast<typename _ToDuration::rep>(
888 static_cast<_Ct>(__fd.count()) * static_cast<_Ct>(_Period::num)));
889 }
890};
891
892template <class _FromDuration, class _ToDuration, class _Period>
893struct __duration_cast<_FromDuration, _ToDuration, _Period, false, false>
894{
895 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
896 _ToDuration operator()(const _FromDuration& __fd) const
897 {
898 typedef typename common_type<typename _ToDuration::rep, typename _FromDuration::rep, intmax_t>::type _Ct;
899 return _ToDuration(static_cast<typename _ToDuration::rep>(
900 static_cast<_Ct>(__fd.count()) * static_cast<_Ct>(_Period::num)
901 / static_cast<_Ct>(_Period::den)));
902 }
903};
904
905template <class _ToDuration, class _Rep, class _Period>
906inline _LIBCPP_INLINE_VISIBILITY
907_LIBCPP_CONSTEXPR
908typename enable_if
909<
910 __is_duration<_ToDuration>::value,
911 _ToDuration
912>::type
913duration_cast(const duration<_Rep, _Period>& __fd)
914{
915 return __duration_cast<duration<_Rep, _Period>, _ToDuration>()(__fd);
916}
917
918template <class _Rep>
919struct _LIBCPP_TEMPLATE_VIS treat_as_floating_point : is_floating_point<_Rep> {};
920
921#if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES)
922template <class _Rep>
923_LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool treat_as_floating_point_v
924 = treat_as_floating_point<_Rep>::value;
925#endif
926
927template <class _Rep>
928struct _LIBCPP_TEMPLATE_VIS duration_values
929{
930public:
931 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR _Rep zero() _NOEXCEPT {return _Rep(0);}
932 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR _Rep max() _NOEXCEPT {return numeric_limits<_Rep>::max();}
933 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR _Rep min() _NOEXCEPT {return numeric_limits<_Rep>::lowest();}
934};
935
936#if _LIBCPP_STD_VER > 14
937template <class _ToDuration, class _Rep, class _Period>
938inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
939typename enable_if
940<
941 __is_duration<_ToDuration>::value,
942 _ToDuration
943>::type
944floor(const duration<_Rep, _Period>& __d)
945{
946 _ToDuration __t = duration_cast<_ToDuration>(__d);
947 if (__t > __d)
948 __t = __t - _ToDuration{1};
949 return __t;
950}
951
952template <class _ToDuration, class _Rep, class _Period>
953inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
954typename enable_if
955<
956 __is_duration<_ToDuration>::value,
957 _ToDuration
958>::type
959ceil(const duration<_Rep, _Period>& __d)
960{
961 _ToDuration __t = duration_cast<_ToDuration>(__d);
962 if (__t < __d)
963 __t = __t + _ToDuration{1};
964 return __t;
965}
966
967template <class _ToDuration, class _Rep, class _Period>
968inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
969typename enable_if
970<
971 __is_duration<_ToDuration>::value,
972 _ToDuration
973>::type
974round(const duration<_Rep, _Period>& __d)
975{
976 _ToDuration __lower = floor<_ToDuration>(__d);
977 _ToDuration __upper = __lower + _ToDuration{1};
978 auto __lowerDiff = __d - __lower;
979 auto __upperDiff = __upper - __d;
980 if (__lowerDiff < __upperDiff)
981 return __lower;
982 if (__lowerDiff > __upperDiff)
983 return __upper;
984 return __lower.count() & 1 ? __upper : __lower;
985}
986#endif
987
988// duration
989
990template <class _Rep, class _Period>
991class _LIBCPP_TEMPLATE_VIS duration
992{
993 static_assert(!__is_duration<_Rep>::value, "A duration representation can not be a duration");
994 static_assert(__is_ratio<_Period>::value, "Second template parameter of duration must be a std::ratio");
995 static_assert(_Period::num > 0, "duration period must be positive");
996
997 template <class _R1, class _R2>
998 struct __no_overflow
999 {
1000 private:
1001 static const intmax_t __gcd_n1_n2 = __static_gcd<_R1::num, _R2::num>::value;
1002 static const intmax_t __gcd_d1_d2 = __static_gcd<_R1::den, _R2::den>::value;
1003 static const intmax_t __n1 = _R1::num / __gcd_n1_n2;
1004 static const intmax_t __d1 = _R1::den / __gcd_d1_d2;
1005 static const intmax_t __n2 = _R2::num / __gcd_n1_n2;
1006 static const intmax_t __d2 = _R2::den / __gcd_d1_d2;
1007 static const intmax_t max = -((intmax_t(1) << (sizeof(intmax_t) * CHAR_BIT - 1)) + 1);
1008
1009 template <intmax_t _Xp, intmax_t _Yp, bool __overflow>
1010 struct __mul // __overflow == false
1011 {
1012 static const intmax_t value = _Xp * _Yp;
1013 };
1014
1015 template <intmax_t _Xp, intmax_t _Yp>
1016 struct __mul<_Xp, _Yp, true>
1017 {
1018 static const intmax_t value = 1;
1019 };
1020
1021 public:
1022 static const bool value = (__n1 <= max / __d2) && (__n2 <= max / __d1);
1023 typedef ratio<__mul<__n1, __d2, !value>::value,
1024 __mul<__n2, __d1, !value>::value> type;
1025 };
1026
1027public:
1028 typedef _Rep rep;
1029 typedef typename _Period::type period;
1030private:
1031 rep __rep_;
1032public:
1033
1034 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1035#ifndef _LIBCPP_CXX03_LANG
1036 duration() = default;
1037#else
1038 duration() {}
1039#endif
1040
1041 template <class _Rep2>
1042 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1043 explicit duration(const _Rep2& __r,
1044 typename enable_if
1045 <
1046 is_convertible<_Rep2, rep>::value &&
1047 (treat_as_floating_point<rep>::value ||
1048 !treat_as_floating_point<_Rep2>::value)
1049 >::type* = 0)
1050 : __rep_(__r) {}
1051
1052 // conversions
1053 template <class _Rep2, class _Period2>
1054 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1055 duration(const duration<_Rep2, _Period2>& __d,
1056 typename enable_if
1057 <
1058 __no_overflow<_Period2, period>::value && (
1059 treat_as_floating_point<rep>::value ||
1060 (__no_overflow<_Period2, period>::type::den == 1 &&
1061 !treat_as_floating_point<_Rep2>::value))
1062 >::type* = 0)
1063 : __rep_(_VSTD::chrono::duration_cast<duration>(__d).count()) {}
1064
1065 // observer
1066
1067 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR rep count() const {return __rep_;}
1068
1069 // arithmetic
1070
1071 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR typename common_type<duration>::type operator+() const {return typename common_type<duration>::type(*this);}
1072 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR typename common_type<duration>::type operator-() const {return typename common_type<duration>::type(-__rep_);}
1073 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator++() {++__rep_; return *this;}
1074 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration operator++(int) {return duration(__rep_++);}
1075 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator--() {--__rep_; return *this;}
1076 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration operator--(int) {return duration(__rep_--);}
1077
1078 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator+=(const duration& __d) {__rep_ += __d.count(); return *this;}
1079 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator-=(const duration& __d) {__rep_ -= __d.count(); return *this;}
1080
1081 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator*=(const rep& rhs) {__rep_ *= rhs; return *this;}
1082 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator/=(const rep& rhs) {__rep_ /= rhs; return *this;}
1083 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator%=(const rep& rhs) {__rep_ %= rhs; return *this;}
1084 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 duration& operator%=(const duration& rhs) {__rep_ %= rhs.count(); return *this;}
1085
1086 // special values
1087
1088 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR duration zero() _NOEXCEPT {return duration(duration_values<rep>::zero());}
1089 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR duration min() _NOEXCEPT {return duration(duration_values<rep>::min());}
1090 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR duration max() _NOEXCEPT {return duration(duration_values<rep>::max());}
1091};
1092
1093typedef duration<long long, nano> nanoseconds;
1094typedef duration<long long, micro> microseconds;
1095typedef duration<long long, milli> milliseconds;
1096typedef duration<long long > seconds;
1097typedef duration< long, ratio< 60> > minutes;
1098typedef duration< long, ratio<3600> > hours;
1099#if _LIBCPP_STD_VER > 17
1100typedef duration< int, ratio_multiply<ratio<24>, hours::period>> days;
1101typedef duration< int, ratio_multiply<ratio<7>, days::period>> weeks;
1102typedef duration< int, ratio_multiply<ratio<146097, 400>, days::period>> years;
1103typedef duration< int, ratio_divide<years::period, ratio<12>>> months;
1104#endif
1105// Duration ==
1106
1107template <class _LhsDuration, class _RhsDuration>
1108struct __duration_eq
1109{
1110 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1111 bool operator()(const _LhsDuration& __lhs, const _RhsDuration& __rhs) const
1112 {
1113 typedef typename common_type<_LhsDuration, _RhsDuration>::type _Ct;
1114 return _Ct(__lhs).count() == _Ct(__rhs).count();
1115 }
1116};
1117
1118template <class _LhsDuration>
1119struct __duration_eq<_LhsDuration, _LhsDuration>
1120{
1121 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1122 bool operator()(const _LhsDuration& __lhs, const _LhsDuration& __rhs) const
1123 {return __lhs.count() == __rhs.count();}
1124};
1125
1126template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1127inline _LIBCPP_INLINE_VISIBILITY
1128_LIBCPP_CONSTEXPR
1129bool
1130operator==(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1131{
1132 return __duration_eq<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >()(__lhs, __rhs);
1133}
1134
1135// Duration !=
1136
1137template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1138inline _LIBCPP_INLINE_VISIBILITY
1139_LIBCPP_CONSTEXPR
1140bool
1141operator!=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1142{
1143 return !(__lhs == __rhs);
1144}
1145
1146// Duration <
1147
1148template <class _LhsDuration, class _RhsDuration>
1149struct __duration_lt
1150{
1151 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1152 bool operator()(const _LhsDuration& __lhs, const _RhsDuration& __rhs) const
1153 {
1154 typedef typename common_type<_LhsDuration, _RhsDuration>::type _Ct;
1155 return _Ct(__lhs).count() < _Ct(__rhs).count();
1156 }
1157};
1158
1159template <class _LhsDuration>
1160struct __duration_lt<_LhsDuration, _LhsDuration>
1161{
1162 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1163 bool operator()(const _LhsDuration& __lhs, const _LhsDuration& __rhs) const
1164 {return __lhs.count() < __rhs.count();}
1165};
1166
1167template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1168inline _LIBCPP_INLINE_VISIBILITY
1169_LIBCPP_CONSTEXPR
1170bool
1171operator< (const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1172{
1173 return __duration_lt<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >()(__lhs, __rhs);
1174}
1175
1176// Duration >
1177
1178template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1179inline _LIBCPP_INLINE_VISIBILITY
1180_LIBCPP_CONSTEXPR
1181bool
1182operator> (const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1183{
1184 return __rhs < __lhs;
1185}
1186
1187// Duration <=
1188
1189template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1190inline _LIBCPP_INLINE_VISIBILITY
1191_LIBCPP_CONSTEXPR
1192bool
1193operator<=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1194{
1195 return !(__rhs < __lhs);
1196}
1197
1198// Duration >=
1199
1200template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1201inline _LIBCPP_INLINE_VISIBILITY
1202_LIBCPP_CONSTEXPR
1203bool
1204operator>=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1205{
1206 return !(__lhs < __rhs);
1207}
1208
1209// Duration +
1210
1211template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1212inline _LIBCPP_INLINE_VISIBILITY
1213_LIBCPP_CONSTEXPR
1214typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type
1215operator+(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1216{
1217 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Cd;
1218 return _Cd(_Cd(__lhs).count() + _Cd(__rhs).count());
1219}
1220
1221// Duration -
1222
1223template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1224inline _LIBCPP_INLINE_VISIBILITY
1225_LIBCPP_CONSTEXPR
1226typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type
1227operator-(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1228{
1229 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Cd;
1230 return _Cd(_Cd(__lhs).count() - _Cd(__rhs).count());
1231}
1232
1233// Duration *
1234
1235template <class _Rep1, class _Period, class _Rep2>
1236inline _LIBCPP_INLINE_VISIBILITY
1237_LIBCPP_CONSTEXPR
1238typename enable_if
1239<
1240 is_convertible<_Rep2, typename common_type<_Rep1, _Rep2>::type>::value,
1241 duration<typename common_type<_Rep1, _Rep2>::type, _Period>
1242>::type
1243operator*(const duration<_Rep1, _Period>& __d, const _Rep2& __s)
1244{
1245 typedef typename common_type<_Rep1, _Rep2>::type _Cr;
1246 typedef duration<_Cr, _Period> _Cd;
1247 return _Cd(_Cd(__d).count() * static_cast<_Cr>(__s));
1248}
1249
1250template <class _Rep1, class _Period, class _Rep2>
1251inline _LIBCPP_INLINE_VISIBILITY
1252_LIBCPP_CONSTEXPR
1253typename enable_if
1254<
1255 is_convertible<_Rep1, typename common_type<_Rep1, _Rep2>::type>::value,
1256 duration<typename common_type<_Rep1, _Rep2>::type, _Period>
1257>::type
1258operator*(const _Rep1& __s, const duration<_Rep2, _Period>& __d)
1259{
1260 return __d * __s;
1261}
1262
1263// Duration /
1264
1265template <class _Rep1, class _Period, class _Rep2>
1266inline _LIBCPP_INLINE_VISIBILITY
1267_LIBCPP_CONSTEXPR
1268typename enable_if
1269<
1270 !__is_duration<_Rep2>::value &&
1271 is_convertible<_Rep2, typename common_type<_Rep1, _Rep2>::type>::value,
1272 duration<typename common_type<_Rep1, _Rep2>::type, _Period>
1273>::type
1274operator/(const duration<_Rep1, _Period>& __d, const _Rep2& __s)
1275{
1276 typedef typename common_type<_Rep1, _Rep2>::type _Cr;
1277 typedef duration<_Cr, _Period> _Cd;
1278 return _Cd(_Cd(__d).count() / static_cast<_Cr>(__s));
1279}
1280
1281template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1282inline _LIBCPP_INLINE_VISIBILITY
1283_LIBCPP_CONSTEXPR
1284typename common_type<_Rep1, _Rep2>::type
1285operator/(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1286{
1287 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Ct;
1288 return _Ct(__lhs).count() / _Ct(__rhs).count();
1289}
1290
1291// Duration %
1292
1293template <class _Rep1, class _Period, class _Rep2>
1294inline _LIBCPP_INLINE_VISIBILITY
1295_LIBCPP_CONSTEXPR
1296typename enable_if
1297<
1298 !__is_duration<_Rep2>::value &&
1299 is_convertible<_Rep2, typename common_type<_Rep1, _Rep2>::type>::value,
1300 duration<typename common_type<_Rep1, _Rep2>::type, _Period>
1301>::type
1302operator%(const duration<_Rep1, _Period>& __d, const _Rep2& __s)
1303{
1304 typedef typename common_type<_Rep1, _Rep2>::type _Cr;
1305 typedef duration<_Cr, _Period> _Cd;
1306 return _Cd(_Cd(__d).count() % static_cast<_Cr>(__s));
1307}
1308
1309template <class _Rep1, class _Period1, class _Rep2, class _Period2>
1310inline _LIBCPP_INLINE_VISIBILITY
1311_LIBCPP_CONSTEXPR
1312typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type
1313operator%(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1314{
1315 typedef typename common_type<_Rep1, _Rep2>::type _Cr;
1316 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Cd;
1317 return _Cd(static_cast<_Cr>(_Cd(__lhs).count()) % static_cast<_Cr>(_Cd(__rhs).count()));
1318}
1319
1320//////////////////////////////////////////////////////////
1321///////////////////// time_point /////////////////////////
1322//////////////////////////////////////////////////////////
1323
1324template <class _Clock, class _Duration = typename _Clock::duration>
1325class _LIBCPP_TEMPLATE_VIS time_point
1326{
1327 static_assert(__is_duration<_Duration>::value,
1328 "Second template parameter of time_point must be a std::chrono::duration");
1329public:
1330 typedef _Clock clock;
1331 typedef _Duration duration;
1332 typedef typename duration::rep rep;
1333 typedef typename duration::period period;
1334private:
1335 duration __d_;
1336
1337public:
1338 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 time_point() : __d_(duration::zero()) {}
1339 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 explicit time_point(const duration& __d) : __d_(__d) {}
1340
1341 // conversions
1342 template <class _Duration2>
1343 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1344 time_point(const time_point<clock, _Duration2>& t,
1345 typename enable_if
1346 <
1347 is_convertible<_Duration2, duration>::value
1348 >::type* = 0)
1349 : __d_(t.time_since_epoch()) {}
1350
1351 // observer
1352
1353 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 duration time_since_epoch() const {return __d_;}
1354
1355 // arithmetic
1356
1357 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 time_point& operator+=(const duration& __d) {__d_ += __d; return *this;}
1358 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 time_point& operator-=(const duration& __d) {__d_ -= __d; return *this;}
1359
1360 // special values
1361
1362 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR time_point min() _NOEXCEPT {return time_point(duration::min());}
1363 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR time_point max() _NOEXCEPT {return time_point(duration::max());}
1364};
1365
1366} // chrono
1367
1368template <class _Clock, class _Duration1, class _Duration2>
1369struct _LIBCPP_TEMPLATE_VIS common_type<chrono::time_point<_Clock, _Duration1>,
1370 chrono::time_point<_Clock, _Duration2> >
1371{
1372 typedef chrono::time_point<_Clock, typename common_type<_Duration1, _Duration2>::type> type;
1373};
1374
1375namespace chrono {
1376
1377template <class _ToDuration, class _Clock, class _Duration>
1378inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1379time_point<_Clock, _ToDuration>
1380time_point_cast(const time_point<_Clock, _Duration>& __t)
1381{
1382 return time_point<_Clock, _ToDuration>(_VSTD::chrono::duration_cast<_ToDuration>(__t.time_since_epoch()));
1383}
1384
1385#if _LIBCPP_STD_VER > 14
1386template <class _ToDuration, class _Clock, class _Duration>
1387inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1388typename enable_if
1389<
1390 __is_duration<_ToDuration>::value,
1391 time_point<_Clock, _ToDuration>
1392>::type
1393floor(const time_point<_Clock, _Duration>& __t)
1394{
1395 return time_point<_Clock, _ToDuration>{floor<_ToDuration>(__t.time_since_epoch())};
1396}
1397
1398template <class _ToDuration, class _Clock, class _Duration>
1399inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1400typename enable_if
1401<
1402 __is_duration<_ToDuration>::value,
1403 time_point<_Clock, _ToDuration>
1404>::type
1405ceil(const time_point<_Clock, _Duration>& __t)
1406{
1407 return time_point<_Clock, _ToDuration>{ceil<_ToDuration>(__t.time_since_epoch())};
1408}
1409
1410template <class _ToDuration, class _Clock, class _Duration>
1411inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1412typename enable_if
1413<
1414 __is_duration<_ToDuration>::value,
1415 time_point<_Clock, _ToDuration>
1416>::type
1417round(const time_point<_Clock, _Duration>& __t)
1418{
1419 return time_point<_Clock, _ToDuration>{round<_ToDuration>(__t.time_since_epoch())};
1420}
1421
1422template <class _Rep, class _Period>
1423inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1424typename enable_if
1425<
1426 numeric_limits<_Rep>::is_signed,
1427 duration<_Rep, _Period>
1428>::type
1429abs(duration<_Rep, _Period> __d)
1430{
1431 return __d >= __d.zero() ? __d : -__d;
1432}
1433#endif
1434
1435// time_point ==
1436
1437template <class _Clock, class _Duration1, class _Duration2>
1438inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1439bool
1440operator==(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs)
1441{
1442 return __lhs.time_since_epoch() == __rhs.time_since_epoch();
1443}
1444
1445// time_point !=
1446
1447template <class _Clock, class _Duration1, class _Duration2>
1448inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1449bool
1450operator!=(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs)
1451{
1452 return !(__lhs == __rhs);
1453}
1454
1455// time_point <
1456
1457template <class _Clock, class _Duration1, class _Duration2>
1458inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1459bool
1460operator<(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs)
1461{
1462 return __lhs.time_since_epoch() < __rhs.time_since_epoch();
1463}
1464
1465// time_point >
1466
1467template <class _Clock, class _Duration1, class _Duration2>
1468inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1469bool
1470operator>(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs)
1471{
1472 return __rhs < __lhs;
1473}
1474
1475// time_point <=
1476
1477template <class _Clock, class _Duration1, class _Duration2>
1478inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1479bool
1480operator<=(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs)
1481{
1482 return !(__rhs < __lhs);
1483}
1484
1485// time_point >=
1486
1487template <class _Clock, class _Duration1, class _Duration2>
1488inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1489bool
1490operator>=(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs)
1491{
1492 return !(__lhs < __rhs);
1493}
1494
1495// time_point operator+(time_point x, duration y);
1496
1497template <class _Clock, class _Duration1, class _Rep2, class _Period2>
1498inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1499time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type>
1500operator+(const time_point<_Clock, _Duration1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1501{
1502 typedef time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type> _Tr;
1503 return _Tr (__lhs.time_since_epoch() + __rhs);
1504}
1505
1506// time_point operator+(duration x, time_point y);
1507
1508template <class _Rep1, class _Period1, class _Clock, class _Duration2>
1509inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1510time_point<_Clock, typename common_type<duration<_Rep1, _Period1>, _Duration2>::type>
1511operator+(const duration<_Rep1, _Period1>& __lhs, const time_point<_Clock, _Duration2>& __rhs)
1512{
1513 return __rhs + __lhs;
1514}
1515
1516// time_point operator-(time_point x, duration y);
1517
1518template <class _Clock, class _Duration1, class _Rep2, class _Period2>
1519inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1520time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type>
1521operator-(const time_point<_Clock, _Duration1>& __lhs, const duration<_Rep2, _Period2>& __rhs)
1522{
1523 typedef time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type> _Ret;
1524 return _Ret(__lhs.time_since_epoch() -__rhs);
1525}
1526
1527// duration operator-(time_point x, time_point y);
1528
1529template <class _Clock, class _Duration1, class _Duration2>
1530inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1531typename common_type<_Duration1, _Duration2>::type
1532operator-(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs)
1533{
1534 return __lhs.time_since_epoch() - __rhs.time_since_epoch();
1535}
1536
1537//////////////////////////////////////////////////////////
1538/////////////////////// clocks ///////////////////////////
1539//////////////////////////////////////////////////////////
1540
1541class _LIBCPP_TYPE_VIS system_clock
1542{
1543public:
1544 typedef microseconds duration;
1545 typedef duration::rep rep;
1546 typedef duration::period period;
1547 typedef chrono::time_point<system_clock> time_point;
1548 static _LIBCPP_CONSTEXPR_AFTER_CXX11 const bool is_steady = false;
1549
1550 static time_point now() _NOEXCEPT;
1551 static time_t to_time_t (const time_point& __t) _NOEXCEPT;
1552 static time_point from_time_t(time_t __t) _NOEXCEPT;
1553};
1554
1555#ifndef _LIBCPP_HAS_NO_MONOTONIC_CLOCK
1556class _LIBCPP_TYPE_VIS steady_clock
1557{
1558public:
1559 typedef nanoseconds duration;
1560 typedef duration::rep rep;
1561 typedef duration::period period;
1562 typedef chrono::time_point<steady_clock, duration> time_point;
1563 static _LIBCPP_CONSTEXPR_AFTER_CXX11 const bool is_steady = true;
1564
1565 static time_point now() _NOEXCEPT;
1566};
1567
1568typedef steady_clock high_resolution_clock;
1569#else
1570typedef system_clock high_resolution_clock;
1571#endif
1572
1573#if _LIBCPP_STD_VER > 17
1574// [time.clock.file], type file_clock
1575using file_clock = _VSTD_FS::_FilesystemClock;
1576
1577template<class _Duration>
1578using file_time = time_point<file_clock, _Duration>;
1579
1580
1581template <class _Duration>
1582using sys_time = time_point<system_clock, _Duration>;
1583using sys_seconds = sys_time<seconds>;
1584using sys_days = sys_time<days>;
1585
1586struct local_t {};
1587template<class Duration>
1588using local_time = time_point<local_t, Duration>;
1589using local_seconds = local_time<seconds>;
1590using local_days = local_time<days>;
1591
1592
1593struct last_spec { explicit last_spec() = default; };
1594
1595class day {
1596private:
1597 unsigned char __d;
1598public:
1599 day() = default;
1600 explicit inline constexpr day(unsigned __val) noexcept : __d(static_cast<unsigned char>(__val)) {}
1601 inline constexpr day& operator++() noexcept { ++__d; return *this; }
1602 inline constexpr day operator++(int) noexcept { day __tmp = *this; ++(*this); return __tmp; }
1603 inline constexpr day& operator--() noexcept { --__d; return *this; }
1604 inline constexpr day operator--(int) noexcept { day __tmp = *this; --(*this); return __tmp; }
1605 constexpr day& operator+=(const days& __dd) noexcept;
1606 constexpr day& operator-=(const days& __dd) noexcept;
1607 explicit inline constexpr operator unsigned() const noexcept { return __d; }
1608 inline constexpr bool ok() const noexcept { return __d >= 1 && __d <= 31; }
1609 };
1610
1611
1612inline constexpr
1613bool operator==(const day& __lhs, const day& __rhs) noexcept
1614{ return static_cast<unsigned>(__lhs) == static_cast<unsigned>(__rhs); }
1615
1616inline constexpr
1617bool operator!=(const day& __lhs, const day& __rhs) noexcept
1618{ return !(__lhs == __rhs); }
1619
1620inline constexpr
1621bool operator< (const day& __lhs, const day& __rhs) noexcept
1622{ return static_cast<unsigned>(__lhs) < static_cast<unsigned>(__rhs); }
1623
1624inline constexpr
1625bool operator> (const day& __lhs, const day& __rhs) noexcept
1626{ return __rhs < __lhs; }
1627
1628inline constexpr
1629bool operator<=(const day& __lhs, const day& __rhs) noexcept
1630{ return !(__rhs < __lhs);}
1631
1632inline constexpr
1633bool operator>=(const day& __lhs, const day& __rhs) noexcept
1634{ return !(__lhs < __rhs); }
1635
1636inline constexpr
1637day operator+ (const day& __lhs, const days& __rhs) noexcept
1638{ return day(static_cast<unsigned>(__lhs) + __rhs.count()); }
1639
1640inline constexpr
1641day operator+ (const days& __lhs, const day& __rhs) noexcept
1642{ return __rhs + __lhs; }
1643
1644inline constexpr
1645day operator- (const day& __lhs, const days& __rhs) noexcept
1646{ return __lhs + -__rhs; }
1647
1648inline constexpr
1649days operator-(const day& __lhs, const day& __rhs) noexcept
1650{ return days(static_cast<int>(static_cast<unsigned>(__lhs)) -
1651 static_cast<int>(static_cast<unsigned>(__rhs))); }
1652
1653inline constexpr day& day::operator+=(const days& __dd) noexcept
1654{ *this = *this + __dd; return *this; }
1655
1656inline constexpr day& day::operator-=(const days& __dd) noexcept
1657{ *this = *this - __dd; return *this; }
1658
1659
1660class month {
1661private:
1662 unsigned char __m;
1663public:
1664 month() = default;
1665 explicit inline constexpr month(unsigned __val) noexcept : __m(static_cast<unsigned char>(__val)) {}
1666 inline constexpr month& operator++() noexcept { ++__m; return *this; }
1667 inline constexpr month operator++(int) noexcept { month __tmp = *this; ++(*this); return __tmp; }
1668 inline constexpr month& operator--() noexcept { --__m; return *this; }
1669 inline constexpr month operator--(int) noexcept { month __tmp = *this; --(*this); return __tmp; }
1670 constexpr month& operator+=(const months& __m1) noexcept;
1671 constexpr month& operator-=(const months& __m1) noexcept;
1672 explicit inline constexpr operator unsigned() const noexcept { return __m; }
1673 inline constexpr bool ok() const noexcept { return __m >= 1 && __m <= 12; }
1674};
1675
1676
1677inline constexpr
1678bool operator==(const month& __lhs, const month& __rhs) noexcept
1679{ return static_cast<unsigned>(__lhs) == static_cast<unsigned>(__rhs); }
1680
1681inline constexpr
1682bool operator!=(const month& __lhs, const month& __rhs) noexcept
1683{ return !(__lhs == __rhs); }
1684
1685inline constexpr
1686bool operator< (const month& __lhs, const month& __rhs) noexcept
1687{ return static_cast<unsigned>(__lhs) < static_cast<unsigned>(__rhs); }
1688
1689inline constexpr
1690bool operator> (const month& __lhs, const month& __rhs) noexcept
1691{ return __rhs < __lhs; }
1692
1693inline constexpr
1694bool operator<=(const month& __lhs, const month& __rhs) noexcept
1695{ return !(__rhs < __lhs); }
1696
1697inline constexpr
1698bool operator>=(const month& __lhs, const month& __rhs) noexcept
1699{ return !(__lhs < __rhs); }
1700
1701inline constexpr
1702month operator+ (const month& __lhs, const months& __rhs) noexcept
1703{
1704 auto const __mu = static_cast<long long>(static_cast<unsigned>(__lhs)) + (__rhs.count() - 1);
1705 auto const __yr = (__mu >= 0 ? __mu : __mu - 11) / 12;
1706 return month{static_cast<unsigned>(__mu - __yr * 12 + 1)};
1707}
1708
1709inline constexpr
1710month operator+ (const months& __lhs, const month& __rhs) noexcept
1711{ return __rhs + __lhs; }
1712
1713inline constexpr
1714month operator- (const month& __lhs, const months& __rhs) noexcept
1715{ return __lhs + -__rhs; }
1716
1717inline constexpr
1718months operator-(const month& __lhs, const month& __rhs) noexcept
1719{
1720 auto const __dm = static_cast<unsigned>(__lhs) - static_cast<unsigned>(__rhs);
1721 return months(__dm <= 11 ? __dm : __dm + 12);
1722}
1723
1724inline constexpr month& month::operator+=(const months& __dm) noexcept
1725{ *this = *this + __dm; return *this; }
1726
1727inline constexpr month& month::operator-=(const months& __dm) noexcept
1728{ *this = *this - __dm; return *this; }
1729
1730
1731class year {
1732private:
1733 short __y;
1734public:
1735 year() = default;
1736 explicit inline constexpr year(int __val) noexcept : __y(static_cast<short>(__val)) {}
1737
1738 inline constexpr year& operator++() noexcept { ++__y; return *this; }
1739 inline constexpr year operator++(int) noexcept { year __tmp = *this; ++(*this); return __tmp; }
1740 inline constexpr year& operator--() noexcept { --__y; return *this; }
1741 inline constexpr year operator--(int) noexcept { year __tmp = *this; --(*this); return __tmp; }
1742 constexpr year& operator+=(const years& __dy) noexcept;
1743 constexpr year& operator-=(const years& __dy) noexcept;
1744 inline constexpr year operator+() const noexcept { return *this; }
1745 inline constexpr year operator-() const noexcept { return year{-__y}; }
1746
1747 inline constexpr bool is_leap() const noexcept { return __y % 4 == 0 && (__y % 100 != 0 || __y % 400 == 0); }
1748 explicit inline constexpr operator int() const noexcept { return __y; }
1749 constexpr bool ok() const noexcept;
1750 static inline constexpr year min() noexcept { return year{-32767}; }
1751 static inline constexpr year max() noexcept { return year{ 32767}; }
1752};
1753
1754
1755inline constexpr
1756bool operator==(const year& __lhs, const year& __rhs) noexcept
1757{ return static_cast<int>(__lhs) == static_cast<int>(__rhs); }
1758
1759inline constexpr
1760bool operator!=(const year& __lhs, const year& __rhs) noexcept
1761{ return !(__lhs == __rhs); }
1762
1763inline constexpr
1764bool operator< (const year& __lhs, const year& __rhs) noexcept
1765{ return static_cast<int>(__lhs) < static_cast<int>(__rhs); }
1766
1767inline constexpr
1768bool operator> (const year& __lhs, const year& __rhs) noexcept
1769{ return __rhs < __lhs; }
1770
1771inline constexpr
1772bool operator<=(const year& __lhs, const year& __rhs) noexcept
1773{ return !(__rhs < __lhs); }
1774
1775inline constexpr
1776bool operator>=(const year& __lhs, const year& __rhs) noexcept
1777{ return !(__lhs < __rhs); }
1778
1779inline constexpr
1780year operator+ (const year& __lhs, const years& __rhs) noexcept
1781{ return year(static_cast<int>(__lhs) + __rhs.count()); }
1782
1783inline constexpr
1784year operator+ (const years& __lhs, const year& __rhs) noexcept
1785{ return __rhs + __lhs; }
1786
1787inline constexpr
1788year operator- (const year& __lhs, const years& __rhs) noexcept
1789{ return __lhs + -__rhs; }
1790
1791inline constexpr
1792years operator-(const year& __lhs, const year& __rhs) noexcept
1793{ return years{static_cast<int>(__lhs) - static_cast<int>(__rhs)}; }
1794
1795
1796inline constexpr year& year::operator+=(const years& __dy) noexcept
1797{ *this = *this + __dy; return *this; }
1798
1799inline constexpr year& year::operator-=(const years& __dy) noexcept
1800{ *this = *this - __dy; return *this; }
1801
1802inline constexpr bool year::ok() const noexcept
1803{ return static_cast<int>(min()) <= __y && __y <= static_cast<int>(max()); }
1804
1805class weekday_indexed;
1806class weekday_last;
1807
1808class weekday {
1809private:
1810 unsigned char __wd;
1811public:
1812 weekday() = default;
1813 inline explicit constexpr weekday(unsigned __val) noexcept : __wd(static_cast<unsigned char>(__val)) {}
1814 inline constexpr weekday(const sys_days& __sysd) noexcept
1815 : __wd(__weekday_from_days(__sysd.time_since_epoch().count())) {}
1816 inline explicit constexpr weekday(const local_days& __locd) noexcept
1817 : __wd(__weekday_from_days(__locd.time_since_epoch().count())) {}
1818
1819 inline constexpr weekday& operator++() noexcept { __wd = (__wd == 6 ? 0 : __wd + 1); return *this; }
1820 inline constexpr weekday operator++(int) noexcept { weekday __tmp = *this; ++(*this); return __tmp; }
1821 inline constexpr weekday& operator--() noexcept { __wd = (__wd == 0 ? 6 : __wd - 1); return *this; }
1822 inline constexpr weekday operator--(int) noexcept { weekday __tmp = *this; --(*this); return __tmp; }
1823 constexpr weekday& operator+=(const days& __dd) noexcept;
1824 constexpr weekday& operator-=(const days& __dd) noexcept;
1825 inline explicit constexpr operator unsigned() const noexcept { return __wd; }
1826 inline constexpr bool ok() const noexcept { return __wd <= 6; }
1827 constexpr weekday_indexed operator[](unsigned __index) const noexcept;
1828 constexpr weekday_last operator[](last_spec) const noexcept;
1829
1830 static constexpr unsigned char __weekday_from_days(int __days) noexcept;
1831};
1832
1833
1834// https://howardhinnant.github.io/date_algorithms.html#weekday_from_days
1835inline constexpr
1836unsigned char weekday::__weekday_from_days(int __days) noexcept
1837{
1838 return static_cast<unsigned char>(
1839 static_cast<unsigned>(__days >= -4 ? (__days+4) % 7 : (__days+5) % 7 + 6)
1840 );
1841}
1842
1843inline constexpr
1844bool operator==(const weekday& __lhs, const weekday& __rhs) noexcept
1845{ return static_cast<unsigned>(__lhs) == static_cast<unsigned>(__rhs); }
1846
1847inline constexpr
1848bool operator!=(const weekday& __lhs, const weekday& __rhs) noexcept
1849{ return !(__lhs == __rhs); }
1850
1851inline constexpr
1852bool operator< (const weekday& __lhs, const weekday& __rhs) noexcept
1853{ return static_cast<unsigned>(__lhs) < static_cast<unsigned>(__rhs); }
1854
1855inline constexpr
1856bool operator> (const weekday& __lhs, const weekday& __rhs) noexcept
1857{ return __rhs < __lhs; }
1858
1859inline constexpr
1860bool operator<=(const weekday& __lhs, const weekday& __rhs) noexcept
1861{ return !(__rhs < __lhs);}
1862
1863inline constexpr
1864bool operator>=(const weekday& __lhs, const weekday& __rhs) noexcept
1865{ return !(__lhs < __rhs); }
1866
1867constexpr weekday operator+(const weekday& __lhs, const days& __rhs) noexcept
1868{
1869 auto const __mu = static_cast<long long>(static_cast<unsigned>(__lhs)) + __rhs.count();
1870 auto const __yr = (__mu >= 0 ? __mu : __mu - 6) / 7;
1871 return weekday{static_cast<unsigned>(__mu - __yr * 7)};
1872}
1873
1874constexpr weekday operator+(const days& __lhs, const weekday& __rhs) noexcept
1875{ return __rhs + __lhs; }
1876
1877constexpr weekday operator-(const weekday& __lhs, const days& __rhs) noexcept
1878{ return __lhs + -__rhs; }
1879
1880constexpr days operator-(const weekday& __lhs, const weekday& __rhs) noexcept
1881{
1882 const int __wdu = static_cast<unsigned>(__lhs) - static_cast<unsigned>(__rhs);
1883 const int __wk = (__wdu >= 0 ? __wdu : __wdu-6) / 7;
1884 return days{__wdu - __wk * 7};
1885}
1886
1887inline constexpr weekday& weekday::operator+=(const days& __dd) noexcept
1888{ *this = *this + __dd; return *this; }
1889
1890inline constexpr weekday& weekday::operator-=(const days& __dd) noexcept
1891{ *this = *this - __dd; return *this; }
1892
1893
1894class weekday_indexed {
1895private:
1896 _VSTD::chrono::weekday __wd;
1897 unsigned char __idx;
1898public:
1899 weekday_indexed() = default;
1900 inline constexpr weekday_indexed(const _VSTD::chrono::weekday& __wdval, unsigned __idxval) noexcept
1901 : __wd{__wdval}, __idx(__idxval) {}
1902 inline constexpr _VSTD::chrono::weekday weekday() const noexcept { return __wd; }
1903 inline constexpr unsigned index() const noexcept { return __idx; }
1904 inline constexpr bool ok() const noexcept { return __wd.ok() && __idx >= 1 && __idx <= 5; }
1905};
1906
1907inline constexpr
1908bool operator==(const weekday_indexed& __lhs, const weekday_indexed& __rhs) noexcept
1909{ return __lhs.weekday() == __rhs.weekday() && __lhs.index() == __rhs.index(); }
1910
1911inline constexpr
1912bool operator!=(const weekday_indexed& __lhs, const weekday_indexed& __rhs) noexcept
1913{ return !(__lhs == __rhs); }
1914
1915
1916class weekday_last {
1917private:
1918 _VSTD::chrono::weekday __wd;
1919public:
1920 explicit constexpr weekday_last(const _VSTD::chrono::weekday& __val) noexcept
1921 : __wd{__val} {}
1922 constexpr _VSTD::chrono::weekday weekday() const noexcept { return __wd; }
1923 constexpr bool ok() const noexcept { return __wd.ok(); }
1924};
1925
1926inline constexpr
1927bool operator==(const weekday_last& __lhs, const weekday_last& __rhs) noexcept
1928{ return __lhs.weekday() == __rhs.weekday(); }
1929
1930inline constexpr
1931bool operator!=(const weekday_last& __lhs, const weekday_last& __rhs) noexcept
1932{ return !(__lhs == __rhs); }
1933
1934inline constexpr
1935weekday_indexed weekday::operator[](unsigned __index) const noexcept { return weekday_indexed{*this, __index}; }
1936
1937inline constexpr
1938weekday_last weekday::operator[](last_spec) const noexcept { return weekday_last{*this}; }
1939
1940
1941inline constexpr last_spec last{};
1942inline constexpr weekday Sunday{0};
1943inline constexpr weekday Monday{1};
1944inline constexpr weekday Tuesday{2};
1945inline constexpr weekday Wednesday{3};
1946inline constexpr weekday Thursday{4};
1947inline constexpr weekday Friday{5};
1948inline constexpr weekday Saturday{6};
1949
1950inline constexpr month January{1};
1951inline constexpr month February{2};
1952inline constexpr month March{3};
1953inline constexpr month April{4};
1954inline constexpr month May{5};
1955inline constexpr month June{6};
1956inline constexpr month July{7};
1957inline constexpr month August{8};
1958inline constexpr month September{9};
1959inline constexpr month October{10};
1960inline constexpr month November{11};
1961inline constexpr month December{12};
1962
1963
1964class month_day {
1965private:
1966 chrono::month __m;
1967 chrono::day __d;
1968public:
1969 month_day() = default;
1970 constexpr month_day(const chrono::month& __mval, const chrono::day& __dval) noexcept
1971 : __m{__mval}, __d{__dval} {}
1972 inline constexpr chrono::month month() const noexcept { return __m; }
1973 inline constexpr chrono::day day() const noexcept { return __d; }
1974 constexpr bool ok() const noexcept;
1975};
1976
1977inline constexpr
1978bool month_day::ok() const noexcept
1979{
1980 if (!__m.ok()) return false;
1981 const unsigned __dval = static_cast<unsigned>(__d);
1982 if (__dval < 1 || __dval > 31) return false;
1983 if (__dval <= 29) return true;
1984// Now we've got either 30 or 31
1985 const unsigned __mval = static_cast<unsigned>(__m);
1986 if (__mval == 2) return false;
1987 if (__mval == 4 || __mval == 6 || __mval == 9 || __mval == 11)
1988 return __dval == 30;
1989 return true;
1990}
1991
1992inline constexpr
1993bool operator==(const month_day& __lhs, const month_day& __rhs) noexcept
1994{ return __lhs.month() == __rhs.month() && __lhs.day() == __rhs.day(); }
1995
1996inline constexpr
1997bool operator!=(const month_day& __lhs, const month_day& __rhs) noexcept
1998{ return !(__lhs == __rhs); }
1999
2000inline constexpr
2001month_day operator/(const month& __lhs, const day& __rhs) noexcept
2002{ return month_day{__lhs, __rhs}; }
2003
2004constexpr
2005month_day operator/(const day& __lhs, const month& __rhs) noexcept
2006{ return __rhs / __lhs; }
2007
2008inline constexpr
2009month_day operator/(const month& __lhs, int __rhs) noexcept
2010{ return __lhs / day(__rhs); }
2011
2012constexpr
2013month_day operator/(int __lhs, const day& __rhs) noexcept
2014{ return month(__lhs) / __rhs; }
2015
2016constexpr
2017month_day operator/(const day& __lhs, int __rhs) noexcept
2018{ return month(__rhs) / __lhs; }
2019
2020
2021inline constexpr
2022bool operator< (const month_day& __lhs, const month_day& __rhs) noexcept
2023{ return __lhs.month() != __rhs.month() ? __lhs.month() < __rhs.month() : __lhs.day() < __rhs.day(); }
2024
2025inline constexpr
2026bool operator> (const month_day& __lhs, const month_day& __rhs) noexcept
2027{ return __rhs < __lhs; }
2028
2029inline constexpr
2030bool operator<=(const month_day& __lhs, const month_day& __rhs) noexcept
2031{ return !(__rhs < __lhs);}
2032
2033inline constexpr
2034bool operator>=(const month_day& __lhs, const month_day& __rhs) noexcept
2035{ return !(__lhs < __rhs); }
2036
2037
2038
2039class month_day_last {
2040private:
2041 chrono::month __m;
2042public:
2043 explicit constexpr month_day_last(const chrono::month& __val) noexcept
2044 : __m{__val} {}
2045 inline constexpr chrono::month month() const noexcept { return __m; }
2046 inline constexpr bool ok() const noexcept { return __m.ok(); }
2047};
2048
2049inline constexpr
2050bool operator==(const month_day_last& __lhs, const month_day_last& __rhs) noexcept
2051{ return __lhs.month() == __rhs.month(); }
2052
2053inline constexpr
2054bool operator!=(const month_day_last& __lhs, const month_day_last& __rhs) noexcept
2055{ return !(__lhs == __rhs); }
2056
2057inline constexpr
2058bool operator< (const month_day_last& __lhs, const month_day_last& __rhs) noexcept
2059{ return __lhs.month() < __rhs.month(); }
2060
2061inline constexpr
2062bool operator> (const month_day_last& __lhs, const month_day_last& __rhs) noexcept
2063{ return __rhs < __lhs; }
2064
2065inline constexpr
2066bool operator<=(const month_day_last& __lhs, const month_day_last& __rhs) noexcept
2067{ return !(__rhs < __lhs);}
2068
2069inline constexpr
2070bool operator>=(const month_day_last& __lhs, const month_day_last& __rhs) noexcept
2071{ return !(__lhs < __rhs); }
2072
2073inline constexpr
2074month_day_last operator/(const month& __lhs, last_spec) noexcept
2075{ return month_day_last{__lhs}; }
2076
2077inline constexpr
2078month_day_last operator/(last_spec, const month& __rhs) noexcept
2079{ return month_day_last{__rhs}; }
2080
2081inline constexpr
2082month_day_last operator/(int __lhs, last_spec) noexcept
2083{ return month_day_last{month(__lhs)}; }
2084
2085inline constexpr
2086month_day_last operator/(last_spec, int __rhs) noexcept
2087{ return month_day_last{month(__rhs)}; }
2088
2089
2090class month_weekday {
2091private:
2092 chrono::month __m;
2093 chrono::weekday_indexed __wdi;
2094public:
2095 month_weekday() = default;
2096 constexpr month_weekday(const chrono::month& __mval, const chrono::weekday_indexed& __wdival) noexcept
2097 : __m{__mval}, __wdi{__wdival} {}
2098 inline constexpr chrono::month month() const noexcept { return __m; }
2099 inline constexpr chrono::weekday_indexed weekday_indexed() const noexcept { return __wdi; }
2100 inline constexpr bool ok() const noexcept { return __m.ok() && __wdi.ok(); }
2101};
2102
2103inline constexpr
2104bool operator==(const month_weekday& __lhs, const month_weekday& __rhs) noexcept
2105{ return __lhs.month() == __rhs.month() && __lhs.weekday_indexed() == __rhs.weekday_indexed(); }
2106
2107inline constexpr
2108bool operator!=(const month_weekday& __lhs, const month_weekday& __rhs) noexcept
2109{ return !(__lhs == __rhs); }
2110
2111inline constexpr
2112month_weekday operator/(const month& __lhs, const weekday_indexed& __rhs) noexcept
2113{ return month_weekday{__lhs, __rhs}; }
2114
2115inline constexpr
2116month_weekday operator/(int __lhs, const weekday_indexed& __rhs) noexcept
2117{ return month_weekday{month(__lhs), __rhs}; }
2118
2119inline constexpr
2120month_weekday operator/(const weekday_indexed& __lhs, const month& __rhs) noexcept
2121{ return month_weekday{__rhs, __lhs}; }
2122
2123inline constexpr
2124month_weekday operator/(const weekday_indexed& __lhs, int __rhs) noexcept
2125{ return month_weekday{month(__rhs), __lhs}; }
2126
2127
2128class month_weekday_last {
2129 chrono::month __m;
2130 chrono::weekday_last __wdl;
2131 public:
2132 constexpr month_weekday_last(const chrono::month& __mval, const chrono::weekday_last& __wdlval) noexcept
2133 : __m{__mval}, __wdl{__wdlval} {}
2134 inline constexpr chrono::month month() const noexcept { return __m; }
2135 inline constexpr chrono::weekday_last weekday_last() const noexcept { return __wdl; }
2136 inline constexpr bool ok() const noexcept { return __m.ok() && __wdl.ok(); }
2137};
2138
2139inline constexpr
2140bool operator==(const month_weekday_last& __lhs, const month_weekday_last& __rhs) noexcept
2141{ return __lhs.month() == __rhs.month() && __lhs.weekday_last() == __rhs.weekday_last(); }
2142
2143inline constexpr
2144bool operator!=(const month_weekday_last& __lhs, const month_weekday_last& __rhs) noexcept
2145{ return !(__lhs == __rhs); }
2146
2147
2148inline constexpr
2149month_weekday_last operator/(const month& __lhs, const weekday_last& __rhs) noexcept
2150{ return month_weekday_last{__lhs, __rhs}; }
2151
2152inline constexpr
2153month_weekday_last operator/(int __lhs, const weekday_last& __rhs) noexcept
2154{ return month_weekday_last{month(__lhs), __rhs}; }
2155
2156inline constexpr
2157month_weekday_last operator/(const weekday_last& __lhs, const month& __rhs) noexcept
2158{ return month_weekday_last{__rhs, __lhs}; }
2159
2160inline constexpr
2161month_weekday_last operator/(const weekday_last& __lhs, int __rhs) noexcept
2162{ return month_weekday_last{month(__rhs), __lhs}; }
2163
2164
2165class year_month {
2166 chrono::year __y;
2167 chrono::month __m;
2168public:
2169 year_month() = default;
2170 constexpr year_month(const chrono::year& __yval, const chrono::month& __mval) noexcept
2171 : __y{__yval}, __m{__mval} {}
2172 inline constexpr chrono::year year() const noexcept { return __y; }
2173 inline constexpr chrono::month month() const noexcept { return __m; }
2174 inline constexpr year_month& operator+=(const months& __dm) noexcept { this->__m += __dm; return *this; }
2175 inline constexpr year_month& operator-=(const months& __dm) noexcept { this->__m -= __dm; return *this; }
2176 inline constexpr year_month& operator+=(const years& __dy) noexcept { this->__y += __dy; return *this; }
2177 inline constexpr year_month& operator-=(const years& __dy) noexcept { this->__y -= __dy; return *this; }
2178 inline constexpr bool ok() const noexcept { return __y.ok() && __m.ok(); }
2179};
2180
2181inline constexpr
2182year_month operator/(const year& __y, const month& __m) noexcept { return year_month{__y, __m}; }
2183
2184inline constexpr
2185year_month operator/(const year& __y, int __m) noexcept { return year_month{__y, month(__m)}; }
2186
2187inline constexpr
2188bool operator==(const year_month& __lhs, const year_month& __rhs) noexcept
2189{ return __lhs.year() == __rhs.year() && __lhs.month() == __rhs.month(); }
2190
2191inline constexpr
2192bool operator!=(const year_month& __lhs, const year_month& __rhs) noexcept
2193{ return !(__lhs == __rhs); }
2194
2195inline constexpr
2196bool operator< (const year_month& __lhs, const year_month& __rhs) noexcept
2197{ return __lhs.year() != __rhs.year() ? __lhs.year() < __rhs.year() : __lhs.month() < __rhs.month(); }
2198
2199inline constexpr
2200bool operator> (const year_month& __lhs, const year_month& __rhs) noexcept
2201{ return __rhs < __lhs; }
2202
2203inline constexpr
2204bool operator<=(const year_month& __lhs, const year_month& __rhs) noexcept
2205{ return !(__rhs < __lhs);}
2206
2207inline constexpr
2208bool operator>=(const year_month& __lhs, const year_month& __rhs) noexcept
2209{ return !(__lhs < __rhs); }
2210
2211constexpr year_month operator+(const year_month& __lhs, const months& __rhs) noexcept
2212{
2213 int __dmi = static_cast<int>(static_cast<unsigned>(__lhs.month())) - 1 + __rhs.count();
2214 const int __dy = (__dmi >= 0 ? __dmi : __dmi-11) / 12;
2215 __dmi = __dmi - __dy * 12 + 1;
2216 return (__lhs.year() + years(__dy)) / month(static_cast<unsigned>(__dmi));
2217}
2218
2219constexpr year_month operator+(const months& __lhs, const year_month& __rhs) noexcept
2220{ return __rhs + __lhs; }
2221
2222constexpr year_month operator+(const year_month& __lhs, const years& __rhs) noexcept
2223{ return (__lhs.year() + __rhs) / __lhs.month(); }
2224
2225constexpr year_month operator+(const years& __lhs, const year_month& __rhs) noexcept
2226{ return __rhs + __lhs; }
2227
2228constexpr months operator-(const year_month& __lhs, const year_month& __rhs) noexcept
2229{ return (__lhs.year() - __rhs.year()) + months(static_cast<unsigned>(__lhs.month()) - static_cast<unsigned>(__rhs.month())); }
2230
2231constexpr year_month operator-(const year_month& __lhs, const months& __rhs) noexcept
2232{ return __lhs + -__rhs; }
2233
2234constexpr year_month operator-(const year_month& __lhs, const years& __rhs) noexcept
2235{ return __lhs + -__rhs; }
2236
2237class year_month_day_last;
2238
2239class year_month_day {
2240private:
2241 chrono::year __y;
2242 chrono::month __m;
2243 chrono::day __d;
2244public:
2245 year_month_day() = default;
2246 inline constexpr year_month_day(
2247 const chrono::year& __yval, const chrono::month& __mval, const chrono::day& __dval) noexcept
2248 : __y{__yval}, __m{__mval}, __d{__dval} {}
2249 constexpr year_month_day(const year_month_day_last& __ymdl) noexcept;
2250 inline constexpr year_month_day(const sys_days& __sysd) noexcept
2251 : year_month_day(__from_days(__sysd.time_since_epoch())) {}
2252 inline explicit constexpr year_month_day(const local_days& __locd) noexcept
2253 : year_month_day(__from_days(__locd.time_since_epoch())) {}
2254
2255 constexpr year_month_day& operator+=(const months& __dm) noexcept;
2256 constexpr year_month_day& operator-=(const months& __dm) noexcept;
2257 constexpr year_month_day& operator+=(const years& __dy) noexcept;
2258 constexpr year_month_day& operator-=(const years& __dy) noexcept;
2259
2260 inline constexpr chrono::year year() const noexcept { return __y; }
2261 inline constexpr chrono::month month() const noexcept { return __m; }
2262 inline constexpr chrono::day day() const noexcept { return __d; }
2263 inline constexpr operator sys_days() const noexcept { return sys_days{__to_days()}; }
2264 inline explicit constexpr operator local_days() const noexcept { return local_days{__to_days()}; }
2265
2266 constexpr bool ok() const noexcept;
2267
2268 static constexpr year_month_day __from_days(days __d) noexcept;
2269 constexpr days __to_days() const noexcept;
2270};
2271
2272
2273// https://howardhinnant.github.io/date_algorithms.html#civil_from_days
2274inline constexpr
2275year_month_day
2276year_month_day::__from_days(days __d) noexcept
2277{
2278 static_assert(std::numeric_limits<unsigned>::digits >= 18, "");
2279 static_assert(std::numeric_limits<int>::digits >= 20 , "");
2280 const int __z = __d.count() + 719468;
2281 const int __era = (__z >= 0 ? __z : __z - 146096) / 146097;
2282 const unsigned __doe = static_cast<unsigned>(__z - __era * 146097); // [0, 146096]
2283 const unsigned __yoe = (__doe - __doe/1460 + __doe/36524 - __doe/146096) / 365; // [0, 399]
2284 const int __yr = static_cast<int>(__yoe) + __era * 400;
2285 const unsigned __doy = __doe - (365 * __yoe + __yoe/4 - __yoe/100); // [0, 365]
2286 const unsigned __mp = (5 * __doy + 2)/153; // [0, 11]
2287 const unsigned __dy = __doy - (153 * __mp + 2)/5 + 1; // [1, 31]
2288 const unsigned __mth = __mp + (__mp < 10 ? 3 : -9); // [1, 12]
2289 return year_month_day{chrono::year{__yr + (__mth <= 2)}, chrono::month{__mth}, chrono::day{__dy}};
2290}
2291
2292// https://howardhinnant.github.io/date_algorithms.html#days_from_civil
2293inline constexpr days year_month_day::__to_days() const noexcept
2294{
2295 static_assert(std::numeric_limits<unsigned>::digits >= 18, "");
2296 static_assert(std::numeric_limits<int>::digits >= 20 , "");
2297
2298 const int __yr = static_cast<int>(__y) - (__m <= February);
2299 const unsigned __mth = static_cast<unsigned>(__m);
2300 const unsigned __dy = static_cast<unsigned>(__d);
2301
2302 const int __era = (__yr >= 0 ? __yr : __yr - 399) / 400;
2303 const unsigned __yoe = static_cast<unsigned>(__yr - __era * 400); // [0, 399]
2304 const unsigned __doy = (153 * (__mth + (__mth > 2 ? -3 : 9)) + 2) / 5 + __dy-1; // [0, 365]
2305 const unsigned __doe = __yoe * 365 + __yoe/4 - __yoe/100 + __doy; // [0, 146096]
2306 return days{__era * 146097 + static_cast<int>(__doe) - 719468};
2307}
2308
2309inline constexpr
2310bool operator==(const year_month_day& __lhs, const year_month_day& __rhs) noexcept
2311{ return __lhs.year() == __rhs.year() && __lhs.month() == __rhs.month() && __lhs.day() == __rhs.day(); }
2312
2313inline constexpr
2314bool operator!=(const year_month_day& __lhs, const year_month_day& __rhs) noexcept
2315{ return !(__lhs == __rhs); }
2316
2317inline constexpr
2318bool operator< (const year_month_day& __lhs, const year_month_day& __rhs) noexcept
2319{
2320 if (__lhs.year() < __rhs.year()) return true;
2321 if (__lhs.year() > __rhs.year()) return false;
2322 if (__lhs.month() < __rhs.month()) return true;
2323 if (__lhs.month() > __rhs.month()) return false;
2324 return __lhs.day() < __rhs.day();
2325}
2326
2327inline constexpr
2328bool operator> (const year_month_day& __lhs, const year_month_day& __rhs) noexcept
2329{ return __rhs < __lhs; }
2330
2331inline constexpr
2332bool operator<=(const year_month_day& __lhs, const year_month_day& __rhs) noexcept
2333{ return !(__rhs < __lhs);}
2334
2335inline constexpr
2336bool operator>=(const year_month_day& __lhs, const year_month_day& __rhs) noexcept
2337{ return !(__lhs < __rhs); }
2338
2339inline constexpr
2340year_month_day operator/(const year_month& __lhs, const day& __rhs) noexcept
2341{ return year_month_day{__lhs.year(), __lhs.month(), __rhs}; }
2342
2343inline constexpr
2344year_month_day operator/(const year_month& __lhs, int __rhs) noexcept
2345{ return __lhs / day(__rhs); }
2346
2347inline constexpr
2348year_month_day operator/(const year& __lhs, const month_day& __rhs) noexcept
2349{ return __lhs / __rhs.month() / __rhs.day(); }
2350
2351inline constexpr
2352year_month_day operator/(int __lhs, const month_day& __rhs) noexcept
2353{ return year(__lhs) / __rhs; }
2354
2355inline constexpr
2356year_month_day operator/(const month_day& __lhs, const year& __rhs) noexcept
2357{ return __rhs / __lhs; }
2358
2359inline constexpr
2360year_month_day operator/(const month_day& __lhs, int __rhs) noexcept
2361{ return year(__rhs) / __lhs; }
2362
2363
2364inline constexpr
2365year_month_day operator+(const year_month_day& __lhs, const months& __rhs) noexcept
2366{ return (__lhs.year()/__lhs.month() + __rhs)/__lhs.day(); }
2367
2368inline constexpr
2369year_month_day operator+(const months& __lhs, const year_month_day& __rhs) noexcept
2370{ return __rhs + __lhs; }
2371
2372inline constexpr
2373year_month_day operator-(const year_month_day& __lhs, const months& __rhs) noexcept
2374{ return __lhs + -__rhs; }
2375
2376inline constexpr
2377year_month_day operator+(const year_month_day& __lhs, const years& __rhs) noexcept
2378{ return (__lhs.year() + __rhs) / __lhs.month() / __lhs.day(); }
2379
2380inline constexpr
2381year_month_day operator+(const years& __lhs, const year_month_day& __rhs) noexcept
2382{ return __rhs + __lhs; }
2383
2384inline constexpr
2385year_month_day operator-(const year_month_day& __lhs, const years& __rhs) noexcept
2386{ return __lhs + -__rhs; }
2387
2388inline constexpr year_month_day& year_month_day::operator+=(const months& __dm) noexcept { *this = *this + __dm; return *this; }
2389inline constexpr year_month_day& year_month_day::operator-=(const months& __dm) noexcept { *this = *this - __dm; return *this; }
2390inline constexpr year_month_day& year_month_day::operator+=(const years& __dy) noexcept { *this = *this + __dy; return *this; }
2391inline constexpr year_month_day& year_month_day::operator-=(const years& __dy) noexcept { *this = *this - __dy; return *this; }
2392
2393class year_month_day_last {
2394private:
2395 chrono::year __y;
2396 chrono::month_day_last __mdl;
2397public:
2398 constexpr year_month_day_last(const year& __yval, const month_day_last& __mdlval) noexcept
2399 : __y{__yval}, __mdl{__mdlval} {}
2400
2401 constexpr year_month_day_last& operator+=(const months& __m) noexcept;
2402 constexpr year_month_day_last& operator-=(const months& __m) noexcept;
2403 constexpr year_month_day_last& operator+=(const years& __y) noexcept;
2404 constexpr year_month_day_last& operator-=(const years& __y) noexcept;
2405
2406 inline constexpr chrono::year year() const noexcept { return __y; }
2407 inline constexpr chrono::month month() const noexcept { return __mdl.month(); }
2408 inline constexpr chrono::month_day_last month_day_last() const noexcept { return __mdl; }
2409 constexpr chrono::day day() const noexcept;
2410 inline constexpr operator sys_days() const noexcept { return sys_days{year()/month()/day()}; }
2411 inline explicit constexpr operator local_days() const noexcept { return local_days{year()/month()/day()}; }
2412 inline constexpr bool ok() const noexcept { return __y.ok() && __mdl.ok(); }
2413};
2414
2415inline constexpr
2416chrono::day year_month_day_last::day() const noexcept
2417{
2418 constexpr chrono::day __d[] =
2419 {
2420 chrono::day(31), chrono::day(28), chrono::day(31),
2421 chrono::day(30), chrono::day(31), chrono::day(30),
2422 chrono::day(31), chrono::day(31), chrono::day(30),
2423 chrono::day(31), chrono::day(30), chrono::day(31)
2424 };
2425 return month() != February || !__y.is_leap() ?
2426 __d[static_cast<unsigned>(month()) - 1] : chrono::day{29};
2427}
2428
2429inline constexpr
2430bool operator==(const year_month_day_last& __lhs, const year_month_day_last& __rhs) noexcept
2431{ return __lhs.year() == __rhs.year() && __lhs.month_day_last() == __rhs.month_day_last(); }
2432
2433inline constexpr
2434bool operator!=(const year_month_day_last& __lhs, const year_month_day_last& __rhs) noexcept
2435{ return !(__lhs == __rhs); }
2436
2437inline constexpr
2438bool operator< (const year_month_day_last& __lhs, const year_month_day_last& __rhs) noexcept
2439{
2440 if (__lhs.year() < __rhs.year()) return true;
2441 if (__lhs.year() > __rhs.year()) return false;
2442 return __lhs.month_day_last() < __rhs.month_day_last();
2443}
2444
2445inline constexpr
2446bool operator> (const year_month_day_last& __lhs, const year_month_day_last& __rhs) noexcept
2447{ return __rhs < __lhs; }
2448
2449inline constexpr
2450bool operator<=(const year_month_day_last& __lhs, const year_month_day_last& __rhs) noexcept
2451{ return !(__rhs < __lhs);}
2452
2453inline constexpr
2454bool operator>=(const year_month_day_last& __lhs, const year_month_day_last& __rhs) noexcept
2455{ return !(__lhs < __rhs); }
2456
2457inline constexpr year_month_day_last operator/(const year_month& __lhs, last_spec) noexcept
2458{ return year_month_day_last{__lhs.year(), month_day_last{__lhs.month()}}; }
2459
2460inline constexpr year_month_day_last operator/(const year& __lhs, const month_day_last& __rhs) noexcept
2461{ return year_month_day_last{__lhs, __rhs}; }
2462
2463inline constexpr year_month_day_last operator/(int __lhs, const month_day_last& __rhs) noexcept
2464{ return year_month_day_last{year{__lhs}, __rhs}; }
2465
2466inline constexpr year_month_day_last operator/(const month_day_last& __lhs, const year& __rhs) noexcept
2467{ return __rhs / __lhs; }
2468
2469inline constexpr year_month_day_last operator/(const month_day_last& __lhs, int __rhs) noexcept
2470{ return year{__rhs} / __lhs; }
2471
2472
2473inline constexpr
2474year_month_day_last operator+(const year_month_day_last& __lhs, const months& __rhs) noexcept
2475{ return (__lhs.year() / __lhs.month() + __rhs) / last; }
2476
2477inline constexpr
2478year_month_day_last operator+(const months& __lhs, const year_month_day_last& __rhs) noexcept
2479{ return __rhs + __lhs; }
2480
2481inline constexpr
2482year_month_day_last operator-(const year_month_day_last& __lhs, const months& __rhs) noexcept
2483{ return __lhs + (-__rhs); }
2484
2485inline constexpr
2486year_month_day_last operator+(const year_month_day_last& __lhs, const years& __rhs) noexcept
2487{ return year_month_day_last{__lhs.year() + __rhs, __lhs.month_day_last()}; }
2488
2489inline constexpr
2490year_month_day_last operator+(const years& __lhs, const year_month_day_last& __rhs) noexcept
2491{ return __rhs + __lhs; }
2492
2493inline constexpr
2494year_month_day_last operator-(const year_month_day_last& __lhs, const years& __rhs) noexcept
2495{ return __lhs + (-__rhs); }
2496
2497inline constexpr year_month_day_last& year_month_day_last::operator+=(const months& __dm) noexcept { *this = *this + __dm; return *this; }
2498inline constexpr year_month_day_last& year_month_day_last::operator-=(const months& __dm) noexcept { *this = *this - __dm; return *this; }
2499inline constexpr year_month_day_last& year_month_day_last::operator+=(const years& __dy) noexcept { *this = *this + __dy; return *this; }
2500inline constexpr year_month_day_last& year_month_day_last::operator-=(const years& __dy) noexcept { *this = *this - __dy; return *this; }
2501
2502inline constexpr year_month_day::year_month_day(const year_month_day_last& __ymdl) noexcept
2503 : __y{__ymdl.year()}, __m{__ymdl.month()}, __d{__ymdl.day()} {}
2504
2505inline constexpr bool year_month_day::ok() const noexcept
2506{
2507 if (!__y.ok() || !__m.ok()) return false;
2508 return chrono::day{1} <= __d && __d <= (__y / __m / last).day();
2509}
2510
2511class year_month_weekday {
2512 chrono::year __y;
2513 chrono::month __m;
2514 chrono::weekday_indexed __wdi;
2515public:
2516 year_month_weekday() = default;
2517 constexpr year_month_weekday(const chrono::year& __yval, const chrono::month& __mval,
2518 const chrono::weekday_indexed& __wdival) noexcept
2519 : __y{__yval}, __m{__mval}, __wdi{__wdival} {}
2520 constexpr year_month_weekday(const sys_days& __sysd) noexcept
2521 : year_month_weekday(__from_days(__sysd.time_since_epoch())) {}
2522 inline explicit constexpr year_month_weekday(const local_days& __locd) noexcept
2523 : year_month_weekday(__from_days(__locd.time_since_epoch())) {}
2524 constexpr year_month_weekday& operator+=(const months& m) noexcept;
2525 constexpr year_month_weekday& operator-=(const months& m) noexcept;
2526 constexpr year_month_weekday& operator+=(const years& y) noexcept;
2527 constexpr year_month_weekday& operator-=(const years& y) noexcept;
2528
2529 inline constexpr chrono::year year() const noexcept { return __y; }
2530 inline constexpr chrono::month month() const noexcept { return __m; }
2531 inline constexpr chrono::weekday weekday() const noexcept { return __wdi.weekday(); }
2532 inline constexpr unsigned index() const noexcept { return __wdi.index(); }
2533 inline constexpr chrono::weekday_indexed weekday_indexed() const noexcept { return __wdi; }
2534
2535 inline constexpr operator sys_days() const noexcept { return sys_days{__to_days()}; }
2536 inline explicit constexpr operator local_days() const noexcept { return local_days{__to_days()}; }
2537 inline constexpr bool ok() const noexcept
2538 {
2539 if (!__y.ok() || !__m.ok() || !__wdi.ok()) return false;
2540 // TODO: make sure it's a valid date
2541 return true;
2542 }
2543
2544 static constexpr year_month_weekday __from_days(days __d) noexcept;
2545 constexpr days __to_days() const noexcept;
2546};
2547
2548inline constexpr
2549year_month_weekday year_month_weekday::__from_days(days __d) noexcept
2550{
2551 const sys_days __sysd{__d};
2552 const chrono::weekday __wd = chrono::weekday(__sysd);
2553 const year_month_day __ymd = year_month_day(__sysd);
2554 return year_month_weekday{__ymd.year(), __ymd.month(),
2555 __wd[(static_cast<unsigned>(__ymd.day())-1)/7+1]};
2556}
2557
2558inline constexpr
2559days year_month_weekday::__to_days() const noexcept
2560{
2561 const sys_days __sysd = sys_days(__y/__m/1);
2562 return (__sysd + (__wdi.weekday() - chrono::weekday(__sysd) + days{(__wdi.index()-1)*7}))
2563 .time_since_epoch();
2564}
2565
2566inline constexpr
2567bool operator==(const year_month_weekday& __lhs, const year_month_weekday& __rhs) noexcept
2568{ return __lhs.year() == __rhs.year() && __lhs.month() == __rhs.month() && __lhs.weekday_indexed() == __rhs.weekday_indexed(); }
2569
2570inline constexpr
2571bool operator!=(const year_month_weekday& __lhs, const year_month_weekday& __rhs) noexcept
2572{ return !(__lhs == __rhs); }
2573
2574inline constexpr
2575year_month_weekday operator/(const year_month& __lhs, const weekday_indexed& __rhs) noexcept
2576{ return year_month_weekday{__lhs.year(), __lhs.month(), __rhs}; }
2577
2578inline constexpr
2579year_month_weekday operator/(const year& __lhs, const month_weekday& __rhs) noexcept
2580{ return year_month_weekday{__lhs, __rhs.month(), __rhs.weekday_indexed()}; }
2581
2582inline constexpr
2583year_month_weekday operator/(int __lhs, const month_weekday& __rhs) noexcept
2584{ return year(__lhs) / __rhs; }
2585
2586inline constexpr
2587year_month_weekday operator/(const month_weekday& __lhs, const year& __rhs) noexcept
2588{ return __rhs / __lhs; }
2589
2590inline constexpr
2591year_month_weekday operator/(const month_weekday& __lhs, int __rhs) noexcept
2592{ return year(__rhs) / __lhs; }
2593
2594
2595inline constexpr
2596year_month_weekday operator+(const year_month_weekday& __lhs, const months& __rhs) noexcept
2597{ return (__lhs.year() / __lhs.month() + __rhs) / __lhs.weekday_indexed(); }
2598
2599inline constexpr
2600year_month_weekday operator+(const months& __lhs, const year_month_weekday& __rhs) noexcept
2601{ return __rhs + __lhs; }
2602
2603inline constexpr
2604year_month_weekday operator-(const year_month_weekday& __lhs, const months& __rhs) noexcept
2605{ return __lhs + (-__rhs); }
2606
2607inline constexpr
2608year_month_weekday operator+(const year_month_weekday& __lhs, const years& __rhs) noexcept
2609{ return year_month_weekday{__lhs.year() + __rhs, __lhs.month(), __lhs.weekday_indexed()}; }
2610
2611inline constexpr
2612year_month_weekday operator+(const years& __lhs, const year_month_weekday& __rhs) noexcept
2613{ return __rhs + __lhs; }
2614
2615inline constexpr
2616year_month_weekday operator-(const year_month_weekday& __lhs, const years& __rhs) noexcept
2617{ return __lhs + (-__rhs); }
2618
2619
2620inline constexpr year_month_weekday& year_month_weekday::operator+=(const months& __dm) noexcept { *this = *this + __dm; return *this; }
2621inline constexpr year_month_weekday& year_month_weekday::operator-=(const months& __dm) noexcept { *this = *this - __dm; return *this; }
2622inline constexpr year_month_weekday& year_month_weekday::operator+=(const years& __dy) noexcept { *this = *this + __dy; return *this; }
2623inline constexpr year_month_weekday& year_month_weekday::operator-=(const years& __dy) noexcept { *this = *this - __dy; return *this; }
2624
2625class year_month_weekday_last {
2626private:
2627 chrono::year __y;
2628 chrono::month __m;
2629 chrono::weekday_last __wdl;
2630public:
2631 constexpr year_month_weekday_last(const chrono::year& __yval, const chrono::month& __mval,
2632 const chrono::weekday_last& __wdlval) noexcept
2633 : __y{__yval}, __m{__mval}, __wdl{__wdlval} {}
2634 constexpr year_month_weekday_last& operator+=(const months& __dm) noexcept;
2635 constexpr year_month_weekday_last& operator-=(const months& __dm) noexcept;
2636 constexpr year_month_weekday_last& operator+=(const years& __dy) noexcept;
2637 constexpr year_month_weekday_last& operator-=(const years& __dy) noexcept;
2638
2639 inline constexpr chrono::year year() const noexcept { return __y; }
2640 inline constexpr chrono::month month() const noexcept { return __m; }
2641 inline constexpr chrono::weekday weekday() const noexcept { return __wdl.weekday(); }
2642 inline constexpr chrono::weekday_last weekday_last() const noexcept { return __wdl; }
2643 inline constexpr operator sys_days() const noexcept { return sys_days{__to_days()}; }
2644 inline explicit constexpr operator local_days() const noexcept { return local_days{__to_days()}; }
2645 inline constexpr bool ok() const noexcept { return __y.ok() && __m.ok() && __wdl.ok(); }
2646
2647 constexpr days __to_days() const noexcept;
2648
2649};
2650
2651inline constexpr
2652days year_month_weekday_last::__to_days() const noexcept
2653{
2654 const sys_days __last = sys_days{__y/__m/last};
2655 return (__last - (chrono::weekday{__last} - __wdl.weekday())).time_since_epoch();
2656
2657}
2658
2659inline constexpr
2660bool operator==(const year_month_weekday_last& __lhs, const year_month_weekday_last& __rhs) noexcept
2661{ return __lhs.year() == __rhs.year() && __lhs.month() == __rhs.month() && __lhs.weekday_last() == __rhs.weekday_last(); }
2662
2663inline constexpr
2664bool operator!=(const year_month_weekday_last& __lhs, const year_month_weekday_last& __rhs) noexcept
2665{ return !(__lhs == __rhs); }
2666
2667
2668inline constexpr
2669year_month_weekday_last operator/(const year_month& __lhs, const weekday_last& __rhs) noexcept
2670{ return year_month_weekday_last{__lhs.year(), __lhs.month(), __rhs}; }
2671
2672inline constexpr
2673year_month_weekday_last operator/(const year& __lhs, const month_weekday_last& __rhs) noexcept
2674{ return year_month_weekday_last{__lhs, __rhs.month(), __rhs.weekday_last()}; }
2675
2676inline constexpr
2677year_month_weekday_last operator/(int __lhs, const month_weekday_last& __rhs) noexcept
2678{ return year(__lhs) / __rhs; }
2679
2680inline constexpr
2681year_month_weekday_last operator/(const month_weekday_last& __lhs, const year& __rhs) noexcept
2682{ return __rhs / __lhs; }
2683
2684inline constexpr
2685year_month_weekday_last operator/(const month_weekday_last& __lhs, int __rhs) noexcept
2686{ return year(__rhs) / __lhs; }
2687
2688
2689inline constexpr
2690year_month_weekday_last operator+(const year_month_weekday_last& __lhs, const months& __rhs) noexcept
2691{ return (__lhs.year() / __lhs.month() + __rhs) / __lhs.weekday_last(); }
2692
2693inline constexpr
2694year_month_weekday_last operator+(const months& __lhs, const year_month_weekday_last& __rhs) noexcept
2695{ return __rhs + __lhs; }
2696
2697inline constexpr
2698year_month_weekday_last operator-(const year_month_weekday_last& __lhs, const months& __rhs) noexcept
2699{ return __lhs + (-__rhs); }
2700
2701inline constexpr
2702year_month_weekday_last operator+(const year_month_weekday_last& __lhs, const years& __rhs) noexcept
2703{ return year_month_weekday_last{__lhs.year() + __rhs, __lhs.month(), __lhs.weekday_last()}; }
2704
2705inline constexpr
2706year_month_weekday_last operator+(const years& __lhs, const year_month_weekday_last& __rhs) noexcept
2707{ return __rhs + __lhs; }
2708
2709inline constexpr
2710year_month_weekday_last operator-(const year_month_weekday_last& __lhs, const years& __rhs) noexcept
2711{ return __lhs + (-__rhs); }
2712
2713inline constexpr year_month_weekday_last& year_month_weekday_last::operator+=(const months& __dm) noexcept { *this = *this + __dm; return *this; }
2714inline constexpr year_month_weekday_last& year_month_weekday_last::operator-=(const months& __dm) noexcept { *this = *this - __dm; return *this; }
2715inline constexpr year_month_weekday_last& year_month_weekday_last::operator+=(const years& __dy) noexcept { *this = *this + __dy; return *this; }
2716inline constexpr year_month_weekday_last& year_month_weekday_last::operator-=(const years& __dy) noexcept { *this = *this - __dy; return *this; }
2717
2718#endif // _LIBCPP_STD_VER > 17
2719} // chrono
2720
2721#if _LIBCPP_STD_VER > 11
2722// Suffixes for duration literals [time.duration.literals]
2723inline namespace literals
2724{
2725 inline namespace chrono_literals
2726 {
2727
2728 constexpr chrono::hours operator""h(unsigned long long __h)
2729 {
2730 return chrono::hours(static_cast<chrono::hours::rep>(__h));
2731 }
2732
2733 constexpr chrono::duration<long double, ratio<3600,1>> operator""h(long double __h)
2734 {
2735 return chrono::duration<long double, ratio<3600,1>>(__h);
2736 }
2737
2738
2739 constexpr chrono::minutes operator""min(unsigned long long __m)
2740 {
2741 return chrono::minutes(static_cast<chrono::minutes::rep>(__m));
2742 }
2743
2744 constexpr chrono::duration<long double, ratio<60,1>> operator""min(long double __m)
2745 {
2746 return chrono::duration<long double, ratio<60,1>> (__m);
2747 }
2748
2749
2750 constexpr chrono::seconds operator""s(unsigned long long __s)
2751 {
2752 return chrono::seconds(static_cast<chrono::seconds::rep>(__s));
2753 }
2754
2755 constexpr chrono::duration<long double> operator""s(long double __s)
2756 {
2757 return chrono::duration<long double> (__s);
2758 }
2759
2760
2761 constexpr chrono::milliseconds operator""ms(unsigned long long __ms)
2762 {
2763 return chrono::milliseconds(static_cast<chrono::milliseconds::rep>(__ms));
2764 }
2765
2766 constexpr chrono::duration<long double, milli> operator""ms(long double __ms)
2767 {
2768 return chrono::duration<long double, milli>(__ms);
2769 }
2770
2771
2772 constexpr chrono::microseconds operator""us(unsigned long long __us)
2773 {
2774 return chrono::microseconds(static_cast<chrono::microseconds::rep>(__us));
2775 }
2776
2777 constexpr chrono::duration<long double, micro> operator""us(long double __us)
2778 {
2779 return chrono::duration<long double, micro> (__us);
2780 }
2781
2782
2783 constexpr chrono::nanoseconds operator""ns(unsigned long long __ns)
2784 {
2785 return chrono::nanoseconds(static_cast<chrono::nanoseconds::rep>(__ns));
2786 }
2787
2788 constexpr chrono::duration<long double, nano> operator""ns(long double __ns)
2789 {
2790 return chrono::duration<long double, nano> (__ns);
2791 }
2792
2793#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CXX20_CHRONO_LITERALS)
2794 constexpr chrono::day operator ""d(unsigned long long __d) noexcept
2795 {
2796 return chrono::day(static_cast<unsigned>(__d));
2797 }
2798
2799 constexpr chrono::year operator ""y(unsigned long long __y) noexcept
2800 {
2801 return chrono::year(static_cast<int>(__y));
2802 }
2803#endif
2804}}
2805
2806namespace chrono { // hoist the literals into namespace std::chrono
2807 using namespace literals::chrono_literals;
2808}
2809
2810#endif
2811
2812_LIBCPP_END_NAMESPACE_STD
2813
2814#ifndef _LIBCPP_CXX03_LANG
2815_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
2816struct _FilesystemClock {
2817#if !defined(_LIBCPP_HAS_NO_INT128)
2818 typedef __int128_t rep;
2819 typedef nano period;
2820#else
2821 typedef long long rep;
2822 typedef nano period;
2823#endif
2824
2825 typedef chrono::duration<rep, period> duration;
2826 typedef chrono::time_point<_FilesystemClock> time_point;
2827
2828 static _LIBCPP_CONSTEXPR_AFTER_CXX11 const bool is_steady = false;
2829
2830 _LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_FUNC_VIS static time_point now() noexcept;
2831
2832 _LIBCPP_INLINE_VISIBILITY
2833 static time_t to_time_t(const time_point& __t) noexcept {
2834 typedef chrono::duration<rep> __secs;
2835 return time_t(
2836 chrono::duration_cast<__secs>(__t.time_since_epoch()).count());
2837 }
2838
2839 _LIBCPP_INLINE_VISIBILITY
2840 static time_point from_time_t(time_t __t) noexcept {
2841 typedef chrono::duration<rep> __secs;
2842 return time_point(__secs(__t));
2843 }
2844};
2845_LIBCPP_END_NAMESPACE_FILESYSTEM
2846#endif // !_LIBCPP_CXX03_LANG
2847
2848_LIBCPP_POP_MACROS
2849
2850#endif // _LIBCPP_CHRONO
2851