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
394    typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type
395    operator+(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
404    typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type
405    operator-(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<_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<_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<_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<_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
471    typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type
472    operator%(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