Forward declaration of duration class template. More...

Public Types
using	period = Period
	The period type representing the tick period in seconds.

using	rep = Rep
	The arithmetic type representing the number of ticks.

Public Member Functions
constexpr	duration () noexcept(is_nothrow_default_constructible_v< rep >)
	Default constructor Initializes the duration with a zero tick count.

template<typename Rep2, typename Period2, arene::base::constraints< enable_if_t< is_convertible_v< Rep2 const &, rep > >, enable_if_t< chrono_detail::check_conversion_overflow< Period2, period >::value >, enable_if_t< treat_as_floating_point_v< rep >\|\|(ratio_divide< Period2, period >::den==1 &&!treat_as_floating_point_v< Rep2 >)>>
constexpr	duration (duration< Rep2, Period2 > const &other) noexcept(noexcept(duration_cast< duration >(std::declval< duration< Rep2, Period2 > const & >()).count()) &&//is_nothrow_constructible_v< rep, >)
	Constructor from another duration type.

template<typename Rep2, arene::base::constraints< enable_if_t< is_convertible_v< Rep2 const &, rep > >, enable_if_t< treat_as_floating_point_v< rep >\|\|!treat_as_floating_point_v< Rep2 > > > = nullptr>
constexpr	duration (Rep2 const &rep_in) noexcept(is_nothrow_copy_constructible_v< rep > &&is_nothrow_constructible_v< rep, Rep2 const & >)
	Constructor from a representation value.

constexpr auto	count () const noexcept(is_nothrow_copy_constructible_v< rep >) -> rep
	Returns the tick count.

constexpr auto	operator%= (duration const &rhs) noexcept(noexcept(declval< rep & >() %=rhs.count())) -> duration &
	Compound modulo assignment operator with duration.

constexpr auto	operator%= (rep const &rhs) noexcept(noexcept(declval< rep & >() %=rhs)) -> duration &
	Compound modulo assignment operator with scalar.

constexpr auto	operator= (rep const &rhs) noexcept(noexcept(declval< rep & >() =rhs)) -> duration &
	Compound multiplication assignment operator.

constexpr auto	operator+ () const noexcept(is_nothrow_copy_constructible_v< duration >) -> duration
	Unary plus operator.

constexpr auto	operator++ () noexcept(noexcept(++declval< rep & >())) -> duration &
	Pre-increment operator.

constexpr auto	operator++ (int) noexcept(is_nothrow_copy_constructible_v< duration > &&noexcept(++declval< rep & >())) -> duration
	Post-increment operator.

constexpr auto	operator+= (duration const &rhs) noexcept(noexcept(declval< rep & >()+=rhs.count())) -> duration &
	Compound addition assignment operator.

constexpr auto	operator- () const noexcept(is_nothrow_constructible_v< duration, rep >) -> duration
	Unary minus operator.

constexpr auto	operator-- () noexcept(noexcept(--declval< rep & >())) -> duration &
	Pre-decrement operator.

constexpr auto	operator-- (int) noexcept(is_nothrow_copy_constructible_v< duration > &&noexcept(--declval< rep & >())) -> duration
	Post-decrement operator.

constexpr auto	operator-= (duration const &rhs) noexcept(noexcept(declval< rep & >() -=rhs.count())) -> duration &
	Compound subtraction assignment operator.

constexpr auto	operator/= (rep const &rhs) noexcept(noexcept(declval< rep & >()/=rhs)) -> duration &
	Compound division assignment operator.

Static Public Member Functions
static constexpr auto	max () noexcept(noexcept(duration(duration_values< rep >::max()))) -> duration
	Get a maximally positive duration.

static constexpr auto	min () noexcept(noexcept(duration(duration_values< rep >::min()))) -> duration
	Get a minimally positive duration (for signed representations, a maximally negative duration)

static constexpr auto	zero () noexcept(noexcept(duration(duration_values< rep >::zero()))) -> duration
	Get a duration of length zero, corresponding to no time passing.

Detailed Description

template<typename Rep, typename Period>
class std::chrono::duration< Rep, Period >

Forward declaration of duration class template.

A time interval represented as a count of ticks of a given period.

The duration class template represents a time interval. It consists of a count of ticks of type Rep and a tick period, where the tick period is a compile-time rational fraction representing the number of seconds from one tick to the next.

Template Parameters

Rep	An arithmetic type or a class emulating an arithmetic type, representing the type of the tick count. Must not be a specialization of duration.
Period	A specialization of std::ratio, representing the tick period in seconds. Must be positive. Defaults to std::ratio<1> (1 second).

Member Typedef Documentation

◆ period

template<typename Rep, typename Period>

using std::chrono::duration< Rep, Period >::period = Period

The period type representing the tick period in seconds.

◆ rep

template<typename Rep, typename Period>

using std::chrono::duration< Rep, Period >::rep = Rep

The arithmetic type representing the number of ticks.

Constructor & Destructor Documentation

◆ duration() [1/3]

template<typename Rep, typename Period>

std::chrono::duration< Rep, Period >::duration ( )

inlineconstexprnoexcept

Default constructor Initializes the duration with a zero tick count.

◆ duration() [2/3]

template<typename Rep, typename Period>

template<typename Rep2, arene::base::constraints< enable_if_t< is_convertible_v< Rep2 const &, rep > >, enable_if_t< treat_as_floating_point_v< rep >||!treat_as_floating_point_v< Rep2 > > > = nullptr>

std::chrono::duration< Rep, Period >::duration ( Rep2 const & rep_in )

inlineexplicitconstexprnoexcept

Constructor from a representation value.

Template Parameters

Rep2	The type of the input representation value, must be convertible to Rep

Parameters

rep_in The tick count value to initialize the duration with

◆ duration() [3/3]

template<typename Rep, typename Period>

template<typename Rep2, typename Period2, arene::base::constraints< enable_if_t< is_convertible_v< Rep2 const &, rep > >, enable_if_t< chrono_detail::check_conversion_overflow< Period2, period >::value >, enable_if_t< treat_as_floating_point_v< rep >||(ratio_divide< Period2, period >::den==1 &&!treat_as_floating_point_v< Rep2 >)>>

std::chrono::duration< Rep, Period >::duration ( duration< Rep2, Period2 > const & other )

inlineconstexprnoexcept

Constructor from another duration type.

Template Parameters

Rep2	The representation type of the source duration
Period2	The period type of the source duration

Parameters

other The source duration to convert from

Note: The standard specifies that "This constructor shall not participate in overload resolution unless no overflow is induced in the conversion". It is unclear what overflow should be checked, and different standard library implementations take different approaches. This implementation aims for compatibility with the approaches taken by libc++ and libstdc++.

Member Function Documentation

◆ count()

template<typename Rep, typename Period>

auto std::chrono::duration< Rep, Period >::count ( ) const -> rep

inlineconstexprnoexcept

Returns the tick count.

Returns: The tick count as a value of type rep

◆ max()

template<typename Rep, typename Period>

static constexpr auto std::chrono::duration< Rep, Period >::max ( ) -> duration

inlinestaticconstexprnoexcept

Get a maximally positive duration.

Returns: A maximal duration

◆ min()

template<typename Rep, typename Period>

static constexpr auto std::chrono::duration< Rep, Period >::min ( ) -> duration

inlinestaticconstexprnoexcept

Get a minimally positive duration (for signed representations, a maximally negative duration)

Returns: A minimal duration

◆ operator%=() [1/2]

template<typename Rep, typename Period>

auto std::chrono::duration< Rep, Period >::operator%= ( duration< Rep, Period > const & rhs ) -> duration&

inlineconstexprnoexcept

Compound modulo assignment operator with duration.

Parameters

rhs	The duration to compute modulo with

Returns: Reference to this duration after modulo operation

◆ operator%=() [2/2]

template<typename Rep, typename Period>

auto std::chrono::duration< Rep, Period >::operator%= ( rep const & rhs ) -> duration&

inlineconstexprnoexcept

Compound modulo assignment operator with scalar.

Parameters

rhs	The scalar to compute modulo with

Returns: Reference to this duration after modulo operation

◆ operator*=()

template<typename Rep, typename Period>

auto std::chrono::duration< Rep, Period >::operator*= ( rep const & rhs ) -> duration&

inlineconstexprnoexcept

Compound multiplication assignment operator.

Parameters

rhs	The scalar to multiply by

Returns: Reference to this duration after multiplication

◆ operator+()

template<typename Rep, typename Period>

auto std::chrono::duration< Rep, Period >::operator+ ( ) const -> duration

inlineconstexprnoexcept

Unary plus operator.

Returns: A copy of this duration

◆ operator++() [1/2]

template<typename Rep, typename Period>

auto std::chrono::duration< Rep, Period >::operator++ ( ) -> duration&

inlineconstexprnoexcept

Pre-increment operator.

Returns: Reference to this duration after incrementing

◆ operator++() [2/2]

template<typename Rep, typename Period>

auto std::chrono::duration< Rep, Period >::operator++ ( int ) -> duration

inlineconstexprnoexcept

Post-increment operator.

Returns: Copy of this duration before incrementing

◆ operator+=()

template<typename Rep, typename Period>

auto std::chrono::duration< Rep, Period >::operator+= ( duration< Rep, Period > const & rhs ) -> duration&

inlineconstexprnoexcept

Compound addition assignment operator.

Parameters

rhs	The duration to add

Returns: Reference to this duration after addition

◆ operator-()

template<typename Rep, typename Period>

auto std::chrono::duration< Rep, Period >::operator- ( ) const -> duration

inlineconstexprnoexcept

Unary minus operator.

Returns: A duration with negated representation

◆ operator--() [1/2]

template<typename Rep, typename Period>

auto std::chrono::duration< Rep, Period >::operator-- ( ) -> duration&

inlineconstexprnoexcept

Pre-decrement operator.

Returns: Reference to this duration after decrementing

◆ operator--() [2/2]

template<typename Rep, typename Period>

auto std::chrono::duration< Rep, Period >::operator-- ( int ) -> duration

inlineconstexprnoexcept

Post-decrement operator.

Returns: Copy of this duration before decrementing

◆ operator-=()

template<typename Rep, typename Period>

auto std::chrono::duration< Rep, Period >::operator-= ( duration< Rep, Period > const & rhs ) -> duration&

inlineconstexprnoexcept

Compound subtraction assignment operator.

Parameters

rhs	The duration to subtract

Returns: Reference to this duration after subtraction

◆ operator/=()

template<typename Rep, typename Period>

auto std::chrono::duration< Rep, Period >::operator/= ( rep const & rhs ) -> duration&

inlineconstexprnoexcept

Compound division assignment operator.

Parameters

rhs	The scalar to divide by

Returns: Reference to this duration after division

◆ zero()

template<typename Rep, typename Period>

static constexpr auto std::chrono::duration< Rep, Period >::zero ( ) -> duration

inlinestaticconstexprnoexcept

Get a duration of length zero, corresponding to no time passing.

Returns: A duration of length zero

The documentation for this class was generated from the following file:

stdlib/include/stdlib_detail/duration.hpp

Public Types

Public Member Functions

Static Public Member Functions

Detailed Description

Member Typedef Documentation

◆ period

◆ rep

Constructor & Destructor Documentation

◆ duration() [1/3]

◆ duration() [2/3]

◆ duration() [3/3]

Member Function Documentation

◆ count()

◆ max()

◆ min()

◆ operator%=() [1/2]

◆ operator%=() [2/2]

◆ operator*=()

◆ operator+()

◆ operator++() [1/2]

◆ operator++() [2/2]

◆ operator+=()

◆ operator-()

◆ operator--() [1/2]

◆ operator--() [2/2]

◆ operator-=()

◆ operator/=()

◆ zero()