1// -*- C++ -*-
2//===----------------------------------------------------------------------===//
3//
4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5// See https://llvm.org/LICENSE.txt for license information.
6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef _LIBCPP___CHRONO_DURATION_H
11#define _LIBCPP___CHRONO_DURATION_H
12
13#include <__compare/ordering.h>
14#include <__compare/three_way_comparable.h>
15#include <__config>
16#include <__type_traits/common_type.h>
17#include <__type_traits/enable_if.h>
18#include <__type_traits/is_convertible.h>
19#include <__type_traits/is_floating_point.h>
20#include <limits>
21#include <ratio>
22
23#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
24# pragma GCC system_header
25#endif
26
27_LIBCPP_PUSH_MACROS
28#include <__undef_macros>
29
30_LIBCPP_BEGIN_NAMESPACE_STD
31
32namespace chrono {
33
34template <class _Rep, class _Period = ratio<1> >
35class _LIBCPP_TEMPLATE_VIS duration;
36
37template <class _Tp>
38struct __is_duration : false_type {};
39
40template <class _Rep, class _Period>
41struct __is_duration<duration<_Rep, _Period> > : true_type {};
42
43template <class _Rep, class _Period>
44struct __is_duration<const duration<_Rep, _Period> > : true_type {};
45
46template <class _Rep, class _Period>
47struct __is_duration<volatile duration<_Rep, _Period> > : true_type {};
48
49template <class _Rep, class _Period>
50struct __is_duration<const volatile duration<_Rep, _Period> > : true_type {};
51
52} // namespace chrono
53
54template <class _Rep1, class _Period1, class _Rep2, class _Period2>
55struct _LIBCPP_TEMPLATE_VIS common_type<chrono::duration<_Rep1, _Period1>, chrono::duration<_Rep2, _Period2> > {
56 typedef chrono::duration<typename common_type<_Rep1, _Rep2>::type, typename __ratio_gcd<_Period1, _Period2>::type>
57 type;
58};
59
60namespace chrono {
61
62// duration_cast
63
64template <class _FromDuration,
65 class _ToDuration,
66 class _Period = typename ratio_divide<typename _FromDuration::period, typename _ToDuration::period>::type,
67 bool = _Period::num == 1,
68 bool = _Period::den == 1>
69struct __duration_cast;
70
71template <class _FromDuration, class _ToDuration, class _Period>
72struct __duration_cast<_FromDuration, _ToDuration, _Period, true, true> {
73 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _ToDuration operator()(const _FromDuration& __fd) const {
74 return _ToDuration(static_cast<typename _ToDuration::rep>(__fd.count()));
75 }
76};
77
78template <class _FromDuration, class _ToDuration, class _Period>
79struct __duration_cast<_FromDuration, _ToDuration, _Period, true, false> {
80 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _ToDuration operator()(const _FromDuration& __fd) const {
81 typedef typename common_type<typename _ToDuration::rep, typename _FromDuration::rep, intmax_t>::type _Ct;
82 return _ToDuration(
83 static_cast<typename _ToDuration::rep>(static_cast<_Ct>(__fd.count()) / static_cast<_Ct>(_Period::den)));
84 }
85};
86
87template <class _FromDuration, class _ToDuration, class _Period>
88struct __duration_cast<_FromDuration, _ToDuration, _Period, false, true> {
89 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _ToDuration operator()(const _FromDuration& __fd) const {
90 typedef typename common_type<typename _ToDuration::rep, typename _FromDuration::rep, intmax_t>::type _Ct;
91 return _ToDuration(
92 static_cast<typename _ToDuration::rep>(static_cast<_Ct>(__fd.count()) * static_cast<_Ct>(_Period::num)));
93 }
94};
95
96template <class _FromDuration, class _ToDuration, class _Period>
97struct __duration_cast<_FromDuration, _ToDuration, _Period, false, false> {
98 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _ToDuration operator()(const _FromDuration& __fd) const {
99 typedef typename common_type<typename _ToDuration::rep, typename _FromDuration::rep, intmax_t>::type _Ct;
100 return _ToDuration(static_cast<typename _ToDuration::rep>(
101 static_cast<_Ct>(__fd.count()) * static_cast<_Ct>(_Period::num) / static_cast<_Ct>(_Period::den)));
102 }
103};
104
105template <class _ToDuration, class _Rep, class _Period, __enable_if_t<__is_duration<_ToDuration>::value, int> = 0>
106inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _ToDuration duration_cast(const duration<_Rep, _Period>& __fd) {
107 return __duration_cast<duration<_Rep, _Period>, _ToDuration>()(__fd);
108}
109
110template <class _Rep>
111struct _LIBCPP_TEMPLATE_VIS treat_as_floating_point : is_floating_point<_Rep> {};
112
113#if _LIBCPP_STD_VER >= 17
114template <class _Rep>
115inline constexpr bool treat_as_floating_point_v = treat_as_floating_point<_Rep>::value;
116#endif
117
118template <class _Rep>
119struct _LIBCPP_TEMPLATE_VIS duration_values {
120public:
121 _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR _Rep zero() _NOEXCEPT { return _Rep(0); }
122 _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR _Rep max() _NOEXCEPT { return numeric_limits<_Rep>::max(); }
123 _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR _Rep min() _NOEXCEPT { return numeric_limits<_Rep>::lowest(); }
124};
125
126#if _LIBCPP_STD_VER >= 17
127template <class _ToDuration, class _Rep, class _Period, enable_if_t<__is_duration<_ToDuration>::value, int> = 0>
128inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _ToDuration floor(const duration<_Rep, _Period>& __d) {
129 _ToDuration __t = chrono::duration_cast<_ToDuration>(__d);
130 if (__t > __d)
131 __t = __t - _ToDuration{1};
132 return __t;
133}
134
135template <class _ToDuration, class _Rep, class _Period, enable_if_t<__is_duration<_ToDuration>::value, int> = 0>
136inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _ToDuration ceil(const duration<_Rep, _Period>& __d) {
137 _ToDuration __t = chrono::duration_cast<_ToDuration>(__d);
138 if (__t < __d)
139 __t = __t + _ToDuration{1};
140 return __t;
141}
142
143template <class _ToDuration, class _Rep, class _Period, enable_if_t<__is_duration<_ToDuration>::value, int> = 0>
144inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _ToDuration round(const duration<_Rep, _Period>& __d) {
145 _ToDuration __lower = chrono::floor<_ToDuration>(__d);
146 _ToDuration __upper = __lower + _ToDuration{1};
147 auto __lower_diff = __d - __lower;
148 auto __upper_diff = __upper - __d;
149 if (__lower_diff < __upper_diff)
150 return __lower;
151 if (__lower_diff > __upper_diff)
152 return __upper;
153 return __lower.count() & 1 ? __upper : __lower;
154}
155#endif
156
157// duration
158
159template <class _Rep, class _Period>
160class _LIBCPP_TEMPLATE_VIS duration {
161 static_assert(!__is_duration<_Rep>::value, "A duration representation can not be a duration");
162 static_assert(__is_ratio<_Period>::value, "Second template parameter of duration must be a std::ratio");
163 static_assert(_Period::num > 0, "duration period must be positive");
164
165 template <class _R1, class _R2>
166 struct __no_overflow {
167 private:
168 static const intmax_t __gcd_n1_n2 = __static_gcd<_R1::num, _R2::num>::value;
169 static const intmax_t __gcd_d1_d2 = __static_gcd<_R1::den, _R2::den>::value;
170 static const intmax_t __n1 = _R1::num / __gcd_n1_n2;
171 static const intmax_t __d1 = _R1::den / __gcd_d1_d2;
172 static const intmax_t __n2 = _R2::num / __gcd_n1_n2;
173 static const intmax_t __d2 = _R2::den / __gcd_d1_d2;
174 static const intmax_t max = -((intmax_t(1) << (sizeof(intmax_t) * CHAR_BIT - 1)) + 1);
175
176 template <intmax_t _Xp, intmax_t _Yp, bool __overflow>
177 struct __mul // __overflow == false
178 {
179 static const intmax_t value = _Xp * _Yp;
180 };
181
182 template <intmax_t _Xp, intmax_t _Yp>
183 struct __mul<_Xp, _Yp, true> {
184 static const intmax_t value = 1;
185 };
186
187 public:
188 static const bool value = (__n1 <= max / __d2) && (__n2 <= max / __d1);
189 typedef ratio<__mul<__n1, __d2, !value>::value, __mul<__n2, __d1, !value>::value> type;
190 };
191
192public:
193 typedef _Rep rep;
194 typedef typename _Period::type period;
195
196private:
197 rep __rep_;
198
199public:
200#ifndef _LIBCPP_CXX03_LANG
201 constexpr duration() = default;
202#else
203 _LIBCPP_HIDE_FROM_ABI duration() {}
204#endif
205
206 template <class _Rep2,
207 __enable_if_t<is_convertible<const _Rep2&, rep>::value &&
208 (treat_as_floating_point<rep>::value || !treat_as_floating_point<_Rep2>::value),
209 int> = 0>
210 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR explicit duration(const _Rep2& __r) : __rep_(__r) {}
211
212 // conversions
213 template <class _Rep2,
214 class _Period2,
215 __enable_if_t<__no_overflow<_Period2, period>::value && (treat_as_floating_point<rep>::value ||
216 (__no_overflow<_Period2, period>::type::den == 1 &&
217 !treat_as_floating_point<_Rep2>::value)),
218 int> = 0>
219 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR duration(const duration<_Rep2, _Period2>& __d)
220 : __rep_(chrono::duration_cast<duration>(__d).count()) {}
221
222 // observer
223
224 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR rep count() const { return __rep_; }
225
226 // arithmetic
227
228 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR typename common_type<duration>::type operator+() const {
229 return typename common_type<duration>::type(*this);
230 }
231 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR typename common_type<duration>::type operator-() const {
232 return typename common_type<duration>::type(-__rep_);
233 }
234 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 duration& operator++() {
235 ++__rep_;
236 return *this;
237 }
238 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 duration operator++(int) { return duration(__rep_++); }
239 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 duration& operator--() {
240 --__rep_;
241 return *this;
242 }
243 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 duration operator--(int) { return duration(__rep_--); }
244
245 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 duration& operator+=(const duration& __d) {
246 __rep_ += __d.count();
247 return *this;
248 }
249 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 duration& operator-=(const duration& __d) {
250 __rep_ -= __d.count();
251 return *this;
252 }
253
254 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 duration& operator*=(const rep& __rhs) {
255 __rep_ *= __rhs;
256 return *this;
257 }
258 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 duration& operator/=(const rep& __rhs) {
259 __rep_ /= __rhs;
260 return *this;
261 }
262 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 duration& operator%=(const rep& __rhs) {
263 __rep_ %= __rhs;
264 return *this;
265 }
266 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 duration& operator%=(const duration& __rhs) {
267 __rep_ %= __rhs.count();
268 return *this;
269 }
270
271 // special values
272
273 _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR duration zero() _NOEXCEPT {
274 return duration(duration_values<rep>::zero());
275 }
276 _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR duration min() _NOEXCEPT {
277 return duration(duration_values<rep>::min());
278 }
279 _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR duration max() _NOEXCEPT {
280 return duration(duration_values<rep>::max());
281 }
282};
283
284typedef duration<long long, nano> nanoseconds;
285typedef duration<long long, micro> microseconds;
286typedef duration<long long, milli> milliseconds;
287typedef duration<long long > seconds;
288typedef duration< long, ratio< 60> > minutes;
289typedef duration< long, ratio<3600> > hours;
290#if _LIBCPP_STD_VER >= 20
291typedef duration< int, ratio_multiply<ratio<24>, hours::period>> days;
292typedef duration< int, ratio_multiply<ratio<7>, days::period>> weeks;
293typedef duration< int, ratio_multiply<ratio<146097, 400>, days::period>> years;
294typedef duration< int, ratio_divide<years::period, ratio<12>>> months;
295#endif
296// Duration ==
297
298template <class _LhsDuration, class _RhsDuration>
299struct __duration_eq {
300 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool operator()(const _LhsDuration& __lhs, const _RhsDuration& __rhs) const {
301 typedef typename common_type<_LhsDuration, _RhsDuration>::type _Ct;
302 return _Ct(__lhs).count() == _Ct(__rhs).count();
303 }
304};
305
306template <class _LhsDuration>
307struct __duration_eq<_LhsDuration, _LhsDuration> {
308 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool operator()(const _LhsDuration& __lhs, const _LhsDuration& __rhs) const {
309 return __lhs.count() == __rhs.count();
310 }
311};
312
313template <class _Rep1, class _Period1, class _Rep2, class _Period2>
314inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool
315operator==(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) {
316 return __duration_eq<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >()(__lhs, __rhs);
317}
318
319#if _LIBCPP_STD_VER <= 17
320
321// Duration !=
322
323template <class _Rep1, class _Period1, class _Rep2, class _Period2>
324inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool
325operator!=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) {
326 return !(__lhs == __rhs);
327}
328
329#endif // _LIBCPP_STD_VER <= 17
330
331// Duration <
332
333template <class _LhsDuration, class _RhsDuration>
334struct __duration_lt {
335 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool operator()(const _LhsDuration& __lhs, const _RhsDuration& __rhs) const {
336 typedef typename common_type<_LhsDuration, _RhsDuration>::type _Ct;
337 return _Ct(__lhs).count() < _Ct(__rhs).count();
338 }
339};
340
341template <class _LhsDuration>
342struct __duration_lt<_LhsDuration, _LhsDuration> {
343 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool operator()(const _LhsDuration& __lhs, const _LhsDuration& __rhs) const {
344 return __lhs.count() < __rhs.count();
345 }
346};
347
348template <class _Rep1, class _Period1, class _Rep2, class _Period2>
349inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool
350operator<(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) {
351 return __duration_lt<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >()(__lhs, __rhs);
352}
353
354// Duration >
355
356template <class _Rep1, class _Period1, class _Rep2, class _Period2>
357inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool
358operator>(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) {
359 return __rhs < __lhs;
360}
361
362// Duration <=
363
364template <class _Rep1, class _Period1, class _Rep2, class _Period2>
365inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool
366operator<=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) {
367 return !(__rhs < __lhs);
368}
369
370// Duration >=
371
372template <class _Rep1, class _Period1, class _Rep2, class _Period2>
373inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR bool
374operator>=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) {
375 return !(__lhs < __rhs);
376}
377
378#if _LIBCPP_STD_VER >= 20
379
380template <class _Rep1, class _Period1, class _Rep2, class _Period2>
381 requires three_way_comparable<common_type_t<_Rep1, _Rep2>>
382_LIBCPP_HIDE_FROM_ABI constexpr auto
383operator<=>(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) {
384 using _Ct = common_type_t<duration<_Rep1, _Period1>, duration<_Rep2, _Period2>>;
385 return _Ct(__lhs).count() <=> _Ct(__rhs).count();
386}
387
388#endif // _LIBCPP_STD_VER >= 20
389
390// Duration +
391
392template <class _Rep1, class _Period1, class _Rep2, class _Period2>
393inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR
394typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type
395operator+(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) {
396 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Cd;
397 return _Cd(_Cd(__lhs).count() + _Cd(__rhs).count());
398}
399
400// Duration -
401
402template <class _Rep1, class _Period1, class _Rep2, class _Period2>
403inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR
404typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type
405operator-(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) {
406 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Cd;
407 return _Cd(_Cd(__lhs).count() - _Cd(__rhs).count());
408}
409
410// Duration *
411
412template <class _Rep1,
413 class _Period,
414 class _Rep2,
415 __enable_if_t<is_convertible<const _Rep2&, typename common_type<_Rep1, _Rep2>::type>::value, int> = 0>
416inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR duration<typename common_type<_Rep1, _Rep2>::type, _Period>
417operator*(const duration<_Rep1, _Period>& __d, const _Rep2& __s) {
418 typedef typename common_type<_Rep1, _Rep2>::type _Cr;
419 typedef duration<_Cr, _Period> _Cd;
420 return _Cd(_Cd(__d).count() * static_cast<_Cr>(__s));
421}
422
423template <class _Rep1,
424 class _Period,
425 class _Rep2,
426 __enable_if_t<is_convertible<const _Rep1&, typename common_type<_Rep1, _Rep2>::type>::value, int> = 0>
427inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR duration<typename common_type<_Rep1, _Rep2>::type, _Period>
428operator*(const _Rep1& __s, const duration<_Rep2, _Period>& __d) {
429 return __d * __s;
430}
431
432// Duration /
433
434template <class _Rep1,
435 class _Period,
436 class _Rep2,
437 __enable_if_t<!__is_duration<_Rep2>::value &&
438 is_convertible<const _Rep2&, typename common_type<_Rep1, _Rep2>::type>::value,
439 int> = 0>
440inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR duration<typename common_type<_Rep1, _Rep2>::type, _Period>
441operator/(const duration<_Rep1, _Period>& __d, const _Rep2& __s) {
442 typedef typename common_type<_Rep1, _Rep2>::type _Cr;
443 typedef duration<_Cr, _Period> _Cd;
444 return _Cd(_Cd(__d).count() / static_cast<_Cr>(__s));
445}
446
447template <class _Rep1, class _Period1, class _Rep2, class _Period2>
448inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR typename common_type<_Rep1, _Rep2>::type
449operator/(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) {
450 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Ct;
451 return _Ct(__lhs).count() / _Ct(__rhs).count();
452}
453
454// Duration %
455
456template <class _Rep1,
457 class _Period,
458 class _Rep2,
459 __enable_if_t<!__is_duration<_Rep2>::value &&
460 is_convertible<const _Rep2&, typename common_type<_Rep1, _Rep2>::type>::value,
461 int> = 0>
462inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR duration<typename common_type<_Rep1, _Rep2>::type, _Period>
463operator%(const duration<_Rep1, _Period>& __d, const _Rep2& __s) {
464 typedef typename common_type<_Rep1, _Rep2>::type _Cr;
465 typedef duration<_Cr, _Period> _Cd;
466 return _Cd(_Cd(__d).count() % static_cast<_Cr>(__s));
467}
468
469template <class _Rep1, class _Period1, class _Rep2, class _Period2>
470inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR
471typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type
472operator%(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) {
473 typedef typename common_type<_Rep1, _Rep2>::type _Cr;
474 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Cd;
475 return _Cd(static_cast<_Cr>(_Cd(__lhs).count()) % static_cast<_Cr>(_Cd(__rhs).count()));
476}
477
478} // namespace chrono
479
480#if _LIBCPP_STD_VER >= 14
481// Suffixes for duration literals [time.duration.literals]
482inline namespace literals {
483inline namespace chrono_literals {
484
485_LIBCPP_HIDE_FROM_ABI constexpr chrono::hours operator""h(unsigned long long __h) {
486 return chrono::hours(static_cast<chrono::hours::rep>(__h));
487}
488
489_LIBCPP_HIDE_FROM_ABI constexpr chrono::duration<long double, ratio<3600, 1>> operator""h(long double __h) {
490 return chrono::duration<long double, ratio<3600, 1>>(__h);
491}
492
493_LIBCPP_HIDE_FROM_ABI constexpr chrono::minutes operator""min(unsigned long long __m) {
494 return chrono::minutes(static_cast<chrono::minutes::rep>(__m));
495}
496
497_LIBCPP_HIDE_FROM_ABI constexpr chrono::duration<long double, ratio<60, 1>> operator""min(long double __m) {
498 return chrono::duration<long double, ratio<60, 1>>(__m);
499}
500
501_LIBCPP_HIDE_FROM_ABI constexpr chrono::seconds operator""s(unsigned long long __s) {
502 return chrono::seconds(static_cast<chrono::seconds::rep>(__s));
503}
504
505_LIBCPP_HIDE_FROM_ABI constexpr chrono::duration<long double> operator""s(long double __s) {
506 return chrono::duration<long double>(__s);
507}
508
509_LIBCPP_HIDE_FROM_ABI constexpr chrono::milliseconds operator""ms(unsigned long long __ms) {
510 return chrono::milliseconds(static_cast<chrono::milliseconds::rep>(__ms));
511}
512
513_LIBCPP_HIDE_FROM_ABI constexpr chrono::duration<long double, milli> operator""ms(long double __ms) {
514 return chrono::duration<long double, milli>(__ms);
515}
516
517_LIBCPP_HIDE_FROM_ABI constexpr chrono::microseconds operator""us(unsigned long long __us) {
518 return chrono::microseconds(static_cast<chrono::microseconds::rep>(__us));
519}
520
521_LIBCPP_HIDE_FROM_ABI constexpr chrono::duration<long double, micro> operator""us(long double __us) {
522 return chrono::duration<long double, micro>(__us);
523}
524
525_LIBCPP_HIDE_FROM_ABI constexpr chrono::nanoseconds operator""ns(unsigned long long __ns) {
526 return chrono::nanoseconds(static_cast<chrono::nanoseconds::rep>(__ns));
527}
528
529_LIBCPP_HIDE_FROM_ABI constexpr chrono::duration<long double, nano> operator""ns(long double __ns) {
530 return chrono::duration<long double, nano>(__ns);
531}
532
533} // namespace chrono_literals
534} // namespace literals
535
536namespace chrono { // hoist the literals into namespace std::chrono
537using namespace literals::chrono_literals;
538} // namespace chrono
539
540#endif // _LIBCPP_STD_VER >= 14
541
542_LIBCPP_END_NAMESPACE_STD
543
544_LIBCPP_POP_MACROS
545
546#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
547# include <type_traits>
548#endif
549
550#endif // _LIBCPP___CHRONO_DURATION_H
551