chrono

C++ time utilities. More...

Classes
struct	day
	The class day represents a day in a month. More...
struct	duration< Rep, Period >
	Class template etl::chrono::duration represents a time interval. More...
struct	duration_values< Rep >
	The etl::chrono::duration_values type defines three common durations. More...
struct	is_clock< typename >
	If T satisfies the Clock requirements, provides the member constant value equal true. For any other type, value is false. More...
struct	last_spec
	last_spec is an empty tag type that is used in conjunction with other calendar types to indicate the last thing in a sequence. More...
struct	local_t
	The class local_t is a pseudo-clock that is used as the first template argument to etl::chrono::time_point to indicate that the time point represents local time with respect of a not-yet-specified time zone. local_time supports streaming and the full set of time point arithmetic. More...
struct	month
	The class month represents a month in a year. More...
struct	month_day
struct	month_day_last
struct	month_weekday
struct	month_weekday_last
struct	system_clock
struct	time_point< Clock, Duration >
	Class template time_point represents a point in time. It is implemented as if it stores a value of type Duration indicating the time interval from the start of the Clock's epoch. More...
struct	treat_as_floating_point< Rep >
	The etl::chrono::treat_as_floating_point trait helps determine if a duration can be converted to another duration with a different tick period. More...
struct	weekday
struct	weekday_indexed
struct	weekday_last
struct	year_month
struct	year_month_day
struct	year_month_day_last
struct	year_month_weekday
struct	year_month_weekday_last

Typedefs
using	local_days = local_time<etl::chrono::days>
using	local_seconds = local_time<etl::chrono::seconds>
template<typename Duration>
using	local_time = etl::chrono::time_point<etl::chrono::local_t, Duration>

Functions
template<typename R, typename P> requires (numeric_limits<R>::is_signed)
constexpr auto	abs (duration< R, P > d) noexcept(is_arithmetic_v< R >) -> duration< R, P >
	Returns the absolute value of the duration d. Specifically, if d >= d.zero(), return d, otherwise return -d. The function does not participate in the overload resolution unless etl::numeric_limits<R>::is_signed is true.
template<typename To, typename Rep, typename Period> requires (detail::is_duration_v<To>)
constexpr auto	ceil (duration< Rep, Period > const &d) noexcept(is_arithmetic_v< Rep > and is_arithmetic_v< typename To::rep >) -> To
template<typename To, typename Clock, typename Duration> requires (detail::is_duration_v<To>)
constexpr auto	ceil (time_point< Clock, Duration > const &tp) -> time_point< Clock, To >
template<typename ToDur, typename Rep, typename Period>
constexpr auto	duration_cast (duration< Rep, Period > const &duration) noexcept(is_arithmetic_v< Rep > and is_arithmetic_v< typename ToDur::rep >) -> ToDur
	Converts a duration to a duration of different type ToDur.
template<typename To, typename Rep, typename Period> requires (detail::is_duration_v<To>)
constexpr auto	floor (duration< Rep, Period > const &d) noexcept(is_arithmetic_v< Rep > and is_arithmetic_v< typename To::rep >) -> To
	Returns the greatest duration t representable in ToDuration that is less or equal to d. The function does not participate in the overload resolution unless ToDuration is an instance of etl::chrono::duration.
template<typename To, typename Clock, typename Duration> requires (detail::is_duration_v<To>)
constexpr auto	floor (time_point< Clock, Duration > const &tp) -> time_point< Clock, To >
template<typename To, typename Rep, typename Period> requires (detail::is_duration_v<To>)
constexpr auto	round (duration< Rep, Period > const &dur) noexcept(is_arithmetic_v< Rep > and is_arithmetic_v< typename To::rep >) -> To
template<typename To, typename Clock, typename Duration> requires (detail::is_duration_v<To>)
constexpr auto	round (time_point< Clock, Duration > const &tp) -> time_point< Clock, To >
template<typename ToDuration, typename Clock, typename Duration> requires (detail::is_duration_v<ToDuration>)
constexpr auto	time_point_cast (time_point< Clock, Duration > const &tp) -> ToDuration

Variables
template<typename T>
constexpr bool	is_clock_v = is_clock<T>::value
constexpr auto	last = last_spec{}
template<typename Rep>
constexpr bool	treat_as_floating_point_v = treat_as_floating_point<Rep>::value

Detailed Description

C++ time utilities.

Typedef Documentation

local_days

using local_days = local_time<etl::chrono::days>

local_seconds

using local_seconds = local_time<etl::chrono::seconds>

local_time

template<typename Duration>

using local_time = etl::chrono::time_point<etl::chrono::local_t, Duration>

Function Documentation

abs()

template<typename R, typename P>
requires (numeric_limits<R>::is_signed)

auto abs ( duration< R, P > d ) -> duration<R, P>

constexprnoexcept

Returns the absolute value of the duration d. Specifically, if d >= d.zero(), return d, otherwise return -d. The function does not participate in the overload resolution unless etl::numeric_limits<R>::is_signed is true.

ceil() [1/2]

template<typename To, typename Rep, typename Period>
requires (detail::is_duration_v<To>)

auto ceil ( duration< Rep, Period > const & d ) -> To

nodiscardconstexprnoexcept

ceil() [2/2]

template<typename To, typename Clock, typename Duration>
requires (detail::is_duration_v<To>)

auto ceil ( time_point< Clock, Duration > const & tp ) -> time_point<Clock, To>

nodiscardconstexpr

duration_cast()

template<typename ToDur, typename Rep, typename Period>

auto duration_cast ( duration< Rep, Period > const & duration ) -> ToDur

related

Converts a duration to a duration of different type ToDur.

floor() [1/2]

template<typename To, typename Rep, typename Period>
requires (detail::is_duration_v<To>)

auto floor ( duration< Rep, Period > const & d ) -> To

nodiscardconstexprnoexcept

Returns the greatest duration t representable in ToDuration that is less or equal to d. The function does not participate in the overload resolution unless ToDuration is an instance of etl::chrono::duration.

floor() [2/2]

template<typename To, typename Clock, typename Duration>
requires (detail::is_duration_v<To>)

auto floor ( time_point< Clock, Duration > const & tp ) -> time_point<Clock, To>

nodiscardconstexpr

round() [1/2]

template<typename To, typename Rep, typename Period>
requires (detail::is_duration_v<To>)

auto round ( duration< Rep, Period > const & dur ) -> To

nodiscardconstexprnoexcept

round() [2/2]

template<typename To, typename Clock, typename Duration>
requires (detail::is_duration_v<To>)

auto round ( time_point< Clock, Duration > const & tp ) -> time_point<Clock, To>

nodiscardconstexpr

time_point_cast()

template<typename ToDuration, typename Clock, typename Duration>
requires (detail::is_duration_v<ToDuration>)

auto time_point_cast ( time_point< Clock, Duration > const & tp ) -> ToDuration

nodiscardconstexpr

Variable Documentation

is_clock_v

template<typename T>

bool is_clock_v = is_clock<T>::value

inlineconstexpr

last

auto last = last_spec{}

related

treat_as_floating_point_v

template<typename Rep>

bool treat_as_floating_point_v = treat_as_floating_point<Rep>::value

inlineconstexpr