std::chrono(3cxx) std::chrono(3cxx)
NAME
std::chrono - ISO C++ 2011 namespace for date and time utilities.
SYNOPSIS
Classes
struct duration
chrono::duration represents a distance between two points in time
struct duration_values
duration_values
struct steady_clock
Monotonic clock.
struct system_clock
System clock.
struct time_point
chrono::time_point represents a point in time as measured by a
clock
struct treat_as_floating_point
treat_as_floating_point
Typedefs
using high_resolution_clock = system_clock
Highest-resolution clock.
using hours = duration< int64_t, ratio< 3600 > >
hours
using microseconds = duration< int64_t, micro >
microseconds
using milliseconds = duration< int64_t, milli >
milliseconds
using minutes = duration< int64_t, ratio< 60 > >
minutes
using nanoseconds = duration< int64_t, nano >
nanoseconds
using seconds = duration< int64_t >
seconds
Functions
template<typename _Rep , typename _Period > constexpr enable_if_t<
numeric_limits< _Rep >::is_signed, duration< _Rep, _Period > > abs
(duration< _Rep, _Period > __d)
template<typename _ToDur , typename _Rep , typename _Period > constexpr
__enable_if_is_duration< _ToDur > ceil (const duration< _Rep,
_Period > &__d)
template<typename _ToDur , typename _Clock , typename _Dur > constexpr
enable_if_t< __is_duration< _ToDur >::value, time_point< _Clock,
_ToDur > > ceil (const time_point< _Clock, _Dur > &__tp)
template<typename _ToDur , typename _Rep , typename _Period > constexpr
__enable_if_is_duration< _ToDur > duration_cast (const duration<
_Rep, _Period > &__d)
duration_cast
template<typename _ToDur , typename _Rep , typename _Period > constexpr
__enable_if_is_duration< _ToDur > floor (const duration< _Rep,
_Period > &__d)
template<typename _ToDur , typename _Clock , typename _Dur > constexpr
enable_if_t< __is_duration< _ToDur >::value, time_point< _Clock,
_ToDur > > floor (const time_point< _Clock, _Dur > &__tp)
template<typename _ToDur , typename _Rep , typename _Period > constexpr
enable_if_t< __and_< __is_duration< _ToDur >, __not_<
treat_as_floating_point< typename _ToDur::rep > > >::value, _ToDur
> round (const duration< _Rep, _Period > &__d)
template<typename _ToDur , typename _Clock , typename _Dur > constexpr
enable_if_t< __and_< __is_duration< _ToDur >, __not_<
treat_as_floating_point< typename _ToDur::rep > > >::value,
time_point< _Clock, _ToDur > > round (const time_point< _Clock,
_Dur > &__tp)
template<typename _ToDur , typename _Clock , typename _Dur > constexpr
enable_if< __is_duration< _ToDur >::value, time_point< _Clock,
_ToDur > >::type time_point_cast (const time_point< _Clock, _Dur >
&__t)
time_point_cast
template<typename _Rep1 , typename _Period1 , typename _Rep2 ,
typename _Period2 > constexpr common_type< duration< _Rep1,
_Period1 >, duration< _Rep2, _Period2 > >::type operator-
(const duration< _Rep1, _Period1 > &__lhs, const duration<
_Rep2, _Period2 > &__rhs)
The difference between two durations.
template<typename _Rep1 , typename _Rep2 , typename _Period >
constexpr duration< __common_rep_t< _Rep2, _Rep1 >, _Period >
operator* (const _Rep1 &__s, const duration< _Rep2, _Period >
&__d)
template<typename _Rep1 , typename _Period , typename _Rep2 >
constexpr duration< __common_rep_t< _Rep1,
__disable_if_is_duration< _Rep2 > >, _Period > operator/ (const
duration< _Rep1, _Period > &__d, const _Rep2 &__s)
template<typename _Rep1 , typename _Period1 , typename _Rep2 ,
typename _Period2 > constexpr common_type< _Rep1, _Rep2 >::type
operator/ (const duration< _Rep1, _Period1 > &__lhs, const
duration< _Rep2, _Period2 > &__rhs)
template<typename _Rep1 , typename _Period , typename _Rep2 >
constexpr duration< __common_rep_t< _Rep1,
__disable_if_is_duration< _Rep2 > >, _Period > operator% (const
duration< _Rep1, _Period > &__d, const _Rep2 &__s)
template<typename _Rep1 , typename _Period1 , typename _Rep2 ,
typename _Period2 > constexpr common_type< duration< _Rep1,
_Period1 >, duration< _Rep2, _Period2 > >::type operator%
(const duration< _Rep1, _Period1 > &__lhs, const duration<
_Rep2, _Period2 > &__rhs)
template<typename _Rep1 , typename _Period1 , typename _Rep2 ,
typename _Period2 > constexpr bool operator< (const duration<
_Rep1, _Period1 > &__lhs, const duration< _Rep2, _Period2 >
&__rhs)
template<typename _Rep1 , typename _Period1 , typename _Rep2 ,
typename _Period2 > constexpr bool operator!= (const duration<
_Rep1, _Period1 > &__lhs, const duration< _Rep2, _Period2 >
&__rhs)
template<typename _Rep1 , typename _Period1 , typename _Rep2 ,
typename _Period2 > constexpr bool operator<= (const duration<
_Rep1, _Period1 > &__lhs, const duration< _Rep2, _Period2 >
&__rhs)
template<typename _Rep1 , typename _Period1 , typename _Rep2 ,
typename _Period2 > constexpr bool operator> (const duration<
_Rep1, _Period1 > &__lhs, const duration< _Rep2, _Period2 >
&__rhs)
template<typename _Rep1 , typename _Period1 , typename _Rep2 ,
typename _Period2 > constexpr bool operator>= (const duration<
_Rep1, _Period1 > &__lhs, const duration< _Rep2, _Period2 >
&__rhs)
template<typename _Rep1 , typename _Period1 , typename _Clock ,
typename _Dur2 > constexpr time_point< _Clock, typename
common_type< duration< _Rep1, _Period1 >, _Dur2 >::type >
operator+ (const duration< _Rep1, _Period1 > &__lhs, const
time_point< _Clock, _Dur2 > &__rhs)
Adjust a time point forwards by the given duration.
template<typename _Clock , typename _Dur1 , typename _Rep2 ,
typename _Period2 > constexpr time_point< _Clock, typename
common_type< _Dur1, duration< _Rep2, _Period2 > >::type >
operator- (const time_point< _Clock, _Dur1 > &__lhs, const
duration< _Rep2, _Period2 > &__rhs)
Adjust a time point backwards by the given duration.
template<typename _Clock , typename _Dur1 , typename _Dur2 >
constexpr common_type< _Dur1, _Dur2 >::type operator- (const
time_point< _Clock, _Dur1 > &__lhs, const time_point< _Clock,
_Dur2 > &__rhs)
The difference between two time points (as a duration)
template<typename _Clock , typename _Dur1 , typename _Dur2 >
constexpr bool operator!= (const time_point< _Clock, _Dur1 >
&__lhs, const time_point< _Clock, _Dur2 > &__rhs)
template<typename _Clock , typename _Dur1 , typename _Dur2 >
constexpr bool operator< (const time_point< _Clock, _Dur1 >
&__lhs, const time_point< _Clock, _Dur2 > &__rhs)
template<typename _Clock , typename _Dur1 , typename _Dur2 >
constexpr bool operator<= (const time_point< _Clock, _Dur1 >
&__lhs, const time_point< _Clock, _Dur2 > &__rhs)
template<typename _Clock , typename _Dur1 , typename _Dur2 >
constexpr bool operator> (const time_point< _Clock, _Dur1 >
&__lhs, const time_point< _Clock, _Dur2 > &__rhs)
template<typename _Clock , typename _Dur1 , typename _Dur2 >
constexpr bool operator>= (const time_point< _Clock, _Dur1 >
&__lhs, const time_point< _Clock, _Dur2 > &__rhs)
Variables
template<typename _Rep > constexpr bool treat_as_floating_point_v
Detailed Description
ISO C++ 2011 namespace for date and time utilities.
Author
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libstdc++ Tue Apr 22 2025 std::chrono(3cxx)
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