std::chrono - Man Page

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 days = duration< int64_t, ratio< 86400 > >
days
using file_clock = ::std::filesystem::__file_clock
template<typename _Duration > using file_time = time_point< file_clock, _Duration >
using gps_seconds = gps_time< seconds >
template<typename _Duration > using gps_time = time_point< gps_clock, _Duration >
using high_resolution_clock = system_clock
Highest-resolution clock.
using hours = duration< int64_t, ratio< 3600 > >
hours
using local_days = local_time< days >
using local_seconds = local_time< seconds >
template<typename _Duration > using local_time = time_point< local_t, _Duration >
using microseconds = duration< int64_t, micro >
microseconds
using milliseconds = duration< int64_t, milli >
milliseconds
using minutes = duration< int64_t, ratio< 60 > >
minutes
using months = duration< int64_t, ratio< 2629746 > >
months
using nanoseconds = duration< int64_t, nano >
nanoseconds
using seconds = duration< int64_t >
seconds
using sys_days = sys_time< days >
using sys_seconds = sys_time< seconds >
template<typename _Duration > using sys_time = time_point< system_clock, _Duration >
using tai_seconds = tai_time< seconds >
template<typename _Duration > using tai_time = time_point< tai_clock, _Duration >
using utc_seconds = utc_time< seconds >
template<typename _Duration > using utc_time = time_point< utc_clock, _Duration >
using weeks = duration< int64_t, ratio< 604800 > >
weeks
using years = duration< int64_t, ratio< 31556952 > >
years

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)
constexpr bool is_am (const hours &__h) noexcept
constexpr bool is_pm (const hours &__h) noexcept
constexpr hours make12 (const hours &__h) noexcept
constexpr hours make24 (const hours &__h, bool __is_pm) noexcept
template<typename _CharT , typename _Traits , typename _Rep , typename _Period > basic_ostream< _CharT, _Traits > & operator<< (std::basic_ostream< _CharT, _Traits > &__os, const duration< _Rep, _Period > &__d)
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

constexpr month April
constexpr month August
constexpr month December
constexpr month February
constexpr weekday Friday
template<typename _Tp > constexpr bool is_clock_v
template<> constexpr bool is_clock_v< file_clock >
template<> constexpr bool is_clock_v< gps_clock >
template<> constexpr bool is_clock_v< steady_clock >
template<> constexpr bool is_clock_v< system_clock >
template<> constexpr bool is_clock_v< tai_clock >
template<> constexpr bool is_clock_v< utc_clock >
constexpr month January
constexpr month July
constexpr month June
constexpr last_spec last
constexpr month March
constexpr month May
constexpr weekday Monday
constexpr month November
constexpr month October
template<typename _Tp > requires requires
constexpr weekday Saturday
constexpr month September
constexpr weekday Sunday
constexpr weekday Thursday
template<typename _Rep > constexpr bool treat_as_floating_point_v
constexpr weekday Tuesday
constexpr weekday Wednesday

Detailed Description

ISO C++ 2011 namespace for date and time utilities.

Author

Generated automatically by Doxygen for libstdc++ from the source code.

Info

Tue Jan 18 2022 libstdc++