29 #ifndef _GLIBCXX_CHRONO 30 #define _GLIBCXX_CHRONO 1 32 #pragma GCC system_header 34 #if __cplusplus < 201103L 44 #ifdef _GLIBCXX_USE_C99_STDINT_TR1 46 namespace std _GLIBCXX_VISIBILITY(default)
61 _GLIBCXX_BEGIN_NAMESPACE_VERSION
63 template<
typename _Rep,
typename _Period = ratio<1>>
66 template<
typename _Clock,
typename _Dur =
typename _Clock::duration>
69 _GLIBCXX_END_NAMESPACE_VERSION
72 _GLIBCXX_BEGIN_NAMESPACE_VERSION
76 template<
typename _CT,
typename _Period1,
typename _Period2>
77 struct __duration_common_type_wrapper
80 typedef __static_gcd<_Period1::num, _Period2::num> __gcd_num;
81 typedef __static_gcd<_Period1::den, _Period2::den> __gcd_den;
82 typedef typename _CT::type __cr;
83 typedef ratio<__gcd_num::value,
84 (_Period1::den / __gcd_den::value) * _Period2::den> __r;
86 typedef __success_type<chrono::duration<__cr, __r>> type;
89 template<
typename _Period1,
typename _Period2>
90 struct __duration_common_type_wrapper<__failure_type, _Period1, _Period2>
91 {
typedef __failure_type type; };
93 template<
typename _Rep1,
typename _Period1,
typename _Rep2,
typename _Period2>
94 struct common_type<chrono::duration<_Rep1, _Period1>,
96 :
public __duration_common_type_wrapper<typename __member_type_wrapper<
97 common_type<_Rep1, _Rep2>>::type, _Period1, _Period2>::type
102 template<
typename _CT,
typename _Clock>
103 struct __timepoint_common_type_wrapper
105 typedef __success_type<chrono::time_point<_Clock, typename _CT::type>>
109 template<
typename _Clock>
110 struct __timepoint_common_type_wrapper<__failure_type, _Clock>
111 {
typedef __failure_type type; };
113 template<
typename _Clock,
typename _Duration1,
typename _Duration2>
114 struct common_type<chrono::
time_point<_Clock, _Duration1>,
116 :
public __timepoint_common_type_wrapper<typename __member_type_wrapper<
117 common_type<_Duration1, _Duration2>>::type, _Clock>::type
120 _GLIBCXX_END_NAMESPACE_VERSION
124 _GLIBCXX_BEGIN_NAMESPACE_VERSION
127 template<
typename _ToDur,
typename _CF,
typename _CR,
128 bool _NumIsOne =
false,
bool _DenIsOne =
false>
129 struct __duration_cast_impl
131 template<
typename _Rep,
typename _Period>
132 static constexpr _ToDur
133 __cast(
const duration<_Rep, _Period>& __d)
135 typedef typename _ToDur::rep __to_rep;
136 return _ToDur(static_cast<__to_rep>(static_cast<_CR>(__d.count())
137 * static_cast<_CR>(_CF::num)
138 /
static_cast<_CR
>(_CF::den)));
142 template<
typename _ToDur,
typename _CF,
typename _CR>
143 struct __duration_cast_impl<_ToDur, _CF, _CR, true, true>
145 template<
typename _Rep,
typename _Period>
146 static constexpr _ToDur
147 __cast(
const duration<_Rep, _Period>& __d)
149 typedef typename _ToDur::rep __to_rep;
150 return _ToDur(static_cast<__to_rep>(__d.count()));
154 template<
typename _ToDur,
typename _CF,
typename _CR>
155 struct __duration_cast_impl<_ToDur, _CF, _CR, true, false>
157 template<
typename _Rep,
typename _Period>
158 static constexpr _ToDur
159 __cast(
const duration<_Rep, _Period>& __d)
161 typedef typename _ToDur::rep __to_rep;
162 return _ToDur(static_cast<__to_rep>(
163 static_cast<_CR>(__d.count()) / static_cast<_CR>(_CF::den)));
167 template<
typename _ToDur,
typename _CF,
typename _CR>
168 struct __duration_cast_impl<_ToDur, _CF, _CR, false, true>
170 template<
typename _Rep,
typename _Period>
171 static constexpr _ToDur
172 __cast(
const duration<_Rep, _Period>& __d)
174 typedef typename _ToDur::rep __to_rep;
175 return _ToDur(static_cast<__to_rep>(
176 static_cast<_CR>(__d.count()) * static_cast<_CR>(_CF::num)));
180 template<
typename _Tp>
185 template<
typename _Rep,
typename _Period>
186 struct __is_duration<duration<_Rep, _Period>>
191 template<
typename _ToDur,
typename _Rep,
typename _Period>
192 constexpr
typename enable_if<__is_duration<_ToDur>::value,
196 typedef typename _ToDur::period __to_period;
197 typedef typename _ToDur::rep __to_rep;
199 typedef typename common_type<__to_rep, _Rep, intmax_t>::type
201 typedef __duration_cast_impl<_ToDur, __cf, __cr,
202 __cf::num == 1, __cf::den == 1> __dc;
203 return __dc::__cast(__d);
207 template<
typename _Rep>
212 #if __cplusplus > 201402L 213 template <
typename _Rep>
214 inline constexpr
bool treat_as_floating_point_v =
218 #if __cplusplus >= 201703L 219 # define __cpp_lib_chrono 201611 221 template<
typename _ToDur,
typename _Rep,
typename _Period>
222 constexpr enable_if_t<__is_duration<_ToDur>::value, _ToDur>
227 return __to - _ToDur{1};
231 template<
typename _ToDur,
typename _Rep,
typename _Period>
232 constexpr enable_if_t<__is_duration<_ToDur>::value, _ToDur>
237 return __to + _ToDur{1};
241 template <
typename _ToDur,
typename _Rep,
typename _Period>
242 constexpr enable_if_t<
243 __and_<__is_duration<_ToDur>,
244 __not_<treat_as_floating_point<typename _ToDur::rep>>>::value,
248 _ToDur __t0 = chrono::floor<_ToDur>(__d);
249 _ToDur __t1 = __t0 + _ToDur{1};
250 auto __diff0 = __d - __t0;
251 auto __diff1 = __t1 - __d;
252 if (__diff0 == __diff1)
254 if (__t0.count() & 1)
258 else if (__diff0 < __diff1)
263 template<
typename _Rep,
typename _Period>
268 if (__d >= __d.zero())
275 template<
typename _Rep>
278 static constexpr _Rep
282 static constexpr _Rep
286 static constexpr _Rep
291 template<
typename _Tp>
296 template<
intmax_t _Num,
intmax_t _Den>
297 struct __is_ratio<ratio<_Num, _Den>>
302 template<
typename _Rep,
typename _Period>
306 typedef _Period period;
308 static_assert(!__is_duration<_Rep>::value,
"rep cannot be a duration");
309 static_assert(__is_ratio<_Period>::value,
310 "period must be a specialization of ratio");
311 static_assert(_Period::num > 0,
"period must be positive");
321 template<
typename _Rep2,
typename =
typename 322 enable_if<is_convertible<_Rep2, rep>::value
325 constexpr
explicit duration(
const _Rep2& __rep)
326 : __r(static_cast<rep>(__rep)) { }
328 template<
typename _Rep2,
typename _Period2,
typename =
typename 329 enable_if<treat_as_floating_point<rep>::value
333 : __r(duration_cast<duration>(__d).count()) { }
389 operator*=(
const rep& __rhs)
396 operator/=(
const rep& __rhs)
403 template<
typename _Rep2 = rep>
405 typename enable_if<!treat_as_floating_point<_Rep2>::value,
407 operator%=(
const rep& __rhs)
413 template<
typename _Rep2 = rep>
415 typename enable_if<!treat_as_floating_point<_Rep2>::value,
440 template<
typename _Rep1,
typename _Period1,
441 typename _Rep2,
typename _Period2>
442 constexpr
typename common_type<duration<_Rep1, _Period1>,
449 typedef typename common_type<__dur1,__dur2>::type __cd;
450 return __cd(__cd(__lhs).count() + __cd(__rhs).count());
453 template<
typename _Rep1,
typename _Period1,
454 typename _Rep2,
typename _Period2>
455 constexpr
typename common_type<duration<_Rep1, _Period1>,
462 typedef typename common_type<__dur1,__dur2>::type __cd;
463 return __cd(__cd(__lhs).count() - __cd(__rhs).count());
466 template<
typename _Rep1,
typename _Rep2,
bool =
467 is_convertible<_Rep2,
468 typename common_type<_Rep1, _Rep2>::type>::value>
469 struct __common_rep_type { };
471 template<
typename _Rep1,
typename _Rep2>
472 struct __common_rep_type<_Rep1, _Rep2, true>
473 {
typedef typename common_type<_Rep1, _Rep2>::type type; };
475 template<
typename _Rep1,
typename _Period,
typename _Rep2>
482 return __cd(__cd(__d).count() * __s);
485 template<
typename _Rep1,
typename _Rep2,
typename _Period>
489 {
return __d * __s; }
491 template<
typename _Rep1,
typename _Period,
typename _Rep2>
492 constexpr
duration<
typename __common_rep_type<_Rep1,
typename 493 enable_if<!__is_duration<_Rep2>::value, _Rep2>::type>::type, _Period>
498 return __cd(__cd(__d).count() / __s);
501 template<
typename _Rep1,
typename _Period1,
502 typename _Rep2,
typename _Period2>
503 constexpr
typename common_type<_Rep1, _Rep2>::type
509 typedef typename common_type<__dur1,__dur2>::type __cd;
510 return __cd(__lhs).count() / __cd(__rhs).count();
514 template<
typename _Rep1,
typename _Period,
typename _Rep2>
515 constexpr
duration<
typename __common_rep_type<_Rep1,
typename 516 enable_if<!__is_duration<_Rep2>::value, _Rep2>::type>::type, _Period>
521 return __cd(__cd(__d).count() % __s);
524 template<
typename _Rep1,
typename _Period1,
525 typename _Rep2,
typename _Period2>
526 constexpr
typename common_type<duration<_Rep1, _Period1>,
533 typedef typename common_type<__dur1,__dur2>::type __cd;
534 return __cd(__cd(__lhs).count() % __cd(__rhs).count());
538 template<
typename _Rep1,
typename _Period1,
539 typename _Rep2,
typename _Period2>
546 typedef typename common_type<__dur1,__dur2>::type __ct;
547 return __ct(__lhs).count() == __ct(__rhs).count();
550 template<
typename _Rep1,
typename _Period1,
551 typename _Rep2,
typename _Period2>
553 operator<(const duration<_Rep1, _Period1>& __lhs,
558 typedef typename common_type<__dur1,__dur2>::type __ct;
559 return __ct(__lhs).count() < __ct(__rhs).count();
562 template<
typename _Rep1,
typename _Period1,
563 typename _Rep2,
typename _Period2>
567 {
return !(__lhs == __rhs); }
569 template<
typename _Rep1,
typename _Period1,
570 typename _Rep2,
typename _Period2>
572 operator<=(const duration<_Rep1, _Period1>& __lhs,
574 {
return !(__rhs < __lhs); }
576 template<
typename _Rep1,
typename _Period1,
577 typename _Rep2,
typename _Period2>
581 {
return __rhs < __lhs; }
583 template<
typename _Rep1,
typename _Period1,
584 typename _Rep2,
typename _Period2>
588 {
return !(__lhs < __rhs); }
609 template<
typename _Clock,
typename _Dur>
612 typedef _Clock clock;
614 typedef typename duration::rep rep;
615 typedef typename duration::period period;
617 constexpr
time_point() : __d(duration::zero())
620 constexpr
explicit time_point(
const duration& __dur)
625 template<
typename _Dur2,
626 typename = _Require<is_convertible<_Dur2, _Dur>>>
628 : __d(__t.time_since_epoch())
633 time_since_epoch()
const 637 _GLIBCXX17_CONSTEXPR time_point&
638 operator+=(
const duration& __dur)
644 _GLIBCXX17_CONSTEXPR time_point&
645 operator-=(
const duration& __dur)
652 static constexpr time_point
654 {
return time_point(duration::min()); }
656 static constexpr time_point
658 {
return time_point(duration::max()); }
665 template<
typename _ToDur,
typename _Clock,
typename _Dur>
666 constexpr
typename enable_if<__is_duration<_ToDur>::value,
671 return __time_point(duration_cast<_ToDur>(__t.time_since_epoch()));
674 #if __cplusplus > 201402L 675 template<
typename _ToDur,
typename _Clock,
typename _Dur>
681 chrono::floor<_ToDur>(__tp.time_since_epoch())};
684 template<
typename _ToDur,
typename _Clock,
typename _Dur>
690 chrono::ceil<_ToDur>(__tp.time_since_epoch())};
693 template<
typename _ToDur,
typename _Clock,
typename _Dur>
694 constexpr enable_if_t<
695 __and_<__is_duration<_ToDur>,
696 __not_<treat_as_floating_point<typename _ToDur::rep>>>::value,
701 chrono::round<_ToDur>(__tp.time_since_epoch())};
705 template<
typename _Clock,
typename _Dur1,
706 typename _Rep2,
typename _Period2>
708 typename common_type<_Dur1, duration<_Rep2, _Period2>>::type>
713 typedef typename common_type<_Dur1,__dur2>::type __ct;
715 return __time_point(__lhs.time_since_epoch() + __rhs);
718 template<
typename _Rep1,
typename _Period1,
719 typename _Clock,
typename _Dur2>
721 typename common_type<duration<_Rep1, _Period1>, _Dur2>::type>
726 typedef typename common_type<__dur1,_Dur2>::type __ct;
728 return __time_point(__rhs.time_since_epoch() + __lhs);
731 template<
typename _Clock,
typename _Dur1,
732 typename _Rep2,
typename _Period2>
734 typename common_type<_Dur1, duration<_Rep2, _Period2>>::type>
739 typedef typename common_type<_Dur1,__dur2>::type __ct;
741 return __time_point(__lhs.time_since_epoch() -__rhs);
744 template<
typename _Clock,
typename _Dur1,
typename _Dur2>
745 constexpr
typename common_type<_Dur1, _Dur2>::type
748 {
return __lhs.time_since_epoch() - __rhs.time_since_epoch(); }
750 template<
typename _Clock,
typename _Dur1,
typename _Dur2>
754 {
return __lhs.time_since_epoch() == __rhs.time_since_epoch(); }
756 template<
typename _Clock,
typename _Dur1,
typename _Dur2>
760 {
return !(__lhs == __rhs); }
762 template<
typename _Clock,
typename _Dur1,
typename _Dur2>
764 operator<(const time_point<_Clock, _Dur1>& __lhs,
766 {
return __lhs.time_since_epoch() < __rhs.time_since_epoch(); }
768 template<
typename _Clock,
typename _Dur1,
typename _Dur2>
770 operator<=(const time_point<_Clock, _Dur1>& __lhs,
772 {
return !(__rhs < __lhs); }
774 template<
typename _Clock,
typename _Dur1,
typename _Dur2>
778 {
return __rhs < __lhs; }
780 template<
typename _Clock,
typename _Dur1,
typename _Dur2>
784 {
return !(__lhs < __rhs); }
805 inline namespace _V2 {
815 typedef duration::rep rep;
816 typedef duration::period period;
820 < system_clock::duration::zero(),
821 "a clock's minimum duration cannot be less than its epoch");
823 static constexpr
bool is_steady =
false;
830 to_time_t(
const time_point& __t) noexcept
832 return std::time_t(duration_cast<chrono::seconds>
833 (__t.time_since_epoch()).count());
837 from_time_t(std::time_t __t) noexcept
854 typedef duration::rep rep;
855 typedef duration::period period;
858 static constexpr
bool is_steady =
true;
876 _GLIBCXX_END_NAMESPACE_VERSION
879 #if __cplusplus > 201103L 881 #define __cpp_lib_chrono_udls 201304 883 inline namespace literals
885 inline namespace chrono_literals
887 _GLIBCXX_BEGIN_NAMESPACE_VERSION
889 template<
typename _Rep,
unsigned long long _Val>
890 struct _Checked_integral_constant
893 static_assert(_Checked_integral_constant::value >= 0
894 && _Checked_integral_constant::value == _Val,
895 "literal value cannot be represented by duration type");
898 template<
typename _Dur,
char... _Digits>
899 constexpr _Dur __check_overflow()
901 using _Val = __parse_int::_Parse_int<_Digits...>;
902 using _Rep =
typename _Dur::rep;
905 using _CheckedVal = _Checked_integral_constant<_Rep, _Val::value>;
906 return _Dur{_CheckedVal::value};
910 operator""h(
long double __hours)
913 template <
char... _Digits>
919 operator""min(
long double __mins)
922 template <
char... _Digits>
928 operator""s(
long double __secs)
931 template <
char... _Digits>
937 operator""ms(
long double __msecs)
940 template <
char... _Digits>
946 operator""us(
long double __usecs)
949 template <
char... _Digits>
955 operator""ns(
long double __nsecs)
958 template <
char... _Digits>
963 _GLIBCXX_END_NAMESPACE_VERSION
969 _GLIBCXX_BEGIN_NAMESPACE_VERSION
971 using namespace literals::chrono_literals;
973 _GLIBCXX_END_NAMESPACE_VERSION
976 #endif // __cplusplus > 201103L 981 #endif //_GLIBCXX_USE_C99_STDINT_TR1 985 #endif //_GLIBCXX_CHRONO
duration< int64_t, micro > microseconds
microseconds
static constexpr _Tp lowest() noexcept
duration< int64_t > seconds
seconds
static constexpr _Tp max() noexcept
constexpr enable_if< __is_duration< _ToDur >::value, _ToDur >::type duration_cast(const duration< _Rep, _Period > &__d)
duration_cast
ISO C++ entities toplevel namespace is std.
_GLIBCXX14_CONSTEXPR const _Tp & min(const _Tp &, const _Tp &)
This does what you think it does.
duration< int64_t, milli > milliseconds
milliseconds
typename __ratio_divide< _R1, _R2 >::type ratio_divide
ratio_divide
_Tp abs(const complex< _Tp > &)
Return magnitude of z.
Provides compile-time rational arithmetic.
duration< int64_t, ratio< 60 > > minutes
minutes
duration< int64_t, nano > nanoseconds
nanoseconds
duration< int64_t, ratio< 3600 > > hours
hours
constexpr enable_if< __is_duration< _ToDur >::value, time_point< _Clock, _ToDur > >::type time_point_cast(const time_point< _Clock, _Dur > &__t)
time_point_cast
_GLIBCXX14_CONSTEXPR const _Tp & max(const _Tp &, const _Tp &)
This does what you think it does.