std::chrono Namespace Reference
Utilities » Time

## Classes

class | duration
struct | duration_values
struct | steady_clock
struct | system_clock
class | time_point
struct | treat_as_floating_point

## Typedefs

using | days
using | file_clock
template<typename _Duration>
using | file_time
using | gps_seconds
template<typename _Duration>
using | gps_time
using | high_resolution_clock
using | hours
using | local_days
using | local_seconds
template<typename _Duration>
using | local_time
using | microseconds
using | milliseconds
using | minutes
using | months
using | nanoseconds
using | seconds
using | sys_days
using | sys_seconds
template<typename _Duration>
using | sys_time
using | tai_seconds
template<typename _Duration>
using | tai_time
using | utc_seconds
template<typename _Duration>
using | utc_time
using | weeks
using | 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)
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_t< __is_duration< _ToDur >::value, time_point< _Clock, _ToDur > > | time_point_cast (const time_point< _Clock, _Dur > &__t)
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
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
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 common_type< duration< _Rep1, _Period1 >, duration< _Rep2, _Period2 > >::type | operator+ (const duration< _Rep1, _Period1 > &__lhs, const duration< _Rep2, _Period2 > &__rhs)
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 _Period, typename _Rep2>
constexpr duration< __common_rep_t< _Rep1, _Rep2 >, _Period > | operator* (const duration< _Rep1, _Period > &__d, const _Rep2 &__s)
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 _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)
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)
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)
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)

## Detailed Description

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