duration

Templates representing a time intervals.

Back to chrono

____________________________________________________________________________________________________

duration_values

STL equivalent: std::chrono::duration_values

template <typename TRep>

struct duration_values

ETL_NODISCARD static ETL_CONSTEXPR TRep zero() ETL_NOEXCEPT

Returns TRep(0)

______________________________________________

ETL_NODISCARD static ETL_CONSTEXPR14 TRep min() ETL_NOEXCEPT

Returns etl::numeric_limits<TRep>::min()

______________________________________________

ETL_NODISCARD static ETL_CONSTEXPR14 TRep max() ETL_NOEXCEPT

Returns etl::numeric_limits<TRep>::max()

____________________________________________________________________________________________________

duration

STL equivalent: std::chrono::duration

template <typename TRep, typename TPeriod = etl::ratio<1>>

class duration

______________________________________________

using rep = TRep

using period = typename TPeriod::type;

____________________________________________________________________________________________________

Construction

ETL_CONSTEXPR

duration()

ETL_NOEXCEPT

Default constructor.

______________________________________________

ETL_CONSTEXPR14

duration(const etl::chrono::duration<TRep, TPeriod>& other)

ETL_NOEXCEPT

______________________________________________

template <typename TRep2>

ETL_CONSTEXPR14

explicit duration(const TRep2& value)

ETL_NOEXCEPT

______________________________________________

template <typename TRep2, typename TPeriod2>

ETL_CONSTEXPR14

duration(const etl::chrono::duration<TRep2, TPeriod2>& other)

ETL_NOEXCEPT

Construct from another duration type.

Enabled if etl::ratio_divide<TPeriod2, TPeriod>::den == 1

____________________________________________________________________________________________________

Tests

ETL_NODISCARD

ETL_CONSTEXPR14

int compare(const time_point& other) const

ETL_NOEXCEPT

Compare day with another.

if time_point < other, returns -1

else if time_point > other, returns 1

else returns 0

____________________________________________________________________________________________________

Assignment

ETL_CONSTEXPR14

etl::chrono::duration<TRep, TPeriod> operator =(const etl::chrono::duration<TRep, TPeriod>& other)

ETL_NOEXCEPT

______________________________________________

template <typename TRep2, typename TPeriod2>

ETL_CONSTEXPR14

etl::chrono::duration<TRep, TPeriod> operator =(const etl::chrono::duration<TRep2, TPeriod2>& other)

ETL_NOEXCEPT

____________________________________________________________________________________________________

Convertion

ETL_CONSTEXPR14

TRep count() const

ETL_NOEXCEPT

Returns the duration count as a numeric.

______________________________________________

ETL_CONSTEXPR14

etl::common_type_t<duration> operator +() const

ETL_NOEXCEPT

Implements unary plus.

______________________________________________

ETL_CONSTEXPR14

etl::common_type_t<duration> operator -() const

ETL_NOEXCEPT

Implements unary minus.

______________________________________________

ETL_NODISCARD

ETL_CONSTEXPR14

etl::chrono::duration<TRep, TPeriod> absolute() const

ETL_NOEXCEPT

Returns the absolute value of the duration.

____________________________________________________________________________________________________

Constants

ETL_NODISCARD

static ETL_CONSTEXPR14 etl::chrono::duration<TRep, TPeriod> zero()

ETL_NOEXCEPT

Returns the duration zero value.

______________________________________________

ETL_NODISCARD

static ETL_CONSTEXPR14 etl::chrono::duration<TRep, TPeriod> min()

ETL_NOEXCEPT

Returns the minimum duration value.

______________________________________________

ETL_NODISCARD

static ETL_CONSTEXPR14 etl::chrono::duration<TRep, TPeriod> max()

ETL_NOEXCEPT

Returns the maximum duration value.

____________________________________________________________________________________________________

Increment/decrement

ETL_CONSTEXPR14

duration& operator ++()

ETL_NOEXCEPT

Pre-increments the duration count.

______________________________________________

ETL_CONSTEXPR14

duration operator ++(int)

ETL_NOEXCEPT

Post-increments the duration count.

______________________________________________

ETL_CONSTEXPR14

duration& operator --()

ETL_NOEXCEPT

Pre-decrements the duration count.

______________________________________________

ETL_CONSTEXPR14

duration operator --(int)

ETL_NOEXCEPT

Post-decrements the duration count.

____________________________________________________________________________________________________

Mathematical operators

ETL_CONSTEXPR14

duration& operator +=(const duration<TRep, TPeriod>& d)

ETL_NOEXCEPT

Adds duration d to this duration.

______________________________________________

ETL_CONSTEXPR14

duration& operator -=(const duration<TRep, TPeriod>& d)

ETL_NOEXCEPT

Subtracts duration d to this duration.

______________________________________________

ETL_CONSTEXPR14

duration& operator *=(const TRep& r)

ETL_NOEXCEPT

Multiplies this duration by r.

______________________________________________

ETL_CONSTEXPR14

duration& operator /=(const TRep& r)

ETL_NOEXCEPT

Divides this duration by r.

______________________________________________

ETL_CONSTEXPR14

duration& operator %=(const TRep& r)

ETL_NOEXCEPT

Sets this duration to the modulus of r.

______________________________________________

ETL_CONSTEXPR14

duration& operator %=(const duration<TRep, TPeriod>& d)

ETL_NOEXCEPT

Sets this duration to the modulus of duration d.

____________________________________________________________________________________________________

Comparison

template <typename TRep2, typename TPeriod2>

ETL_CONSTEXPR14

int compare(const duration<TRep2, TPeriod2>& other) const

ETL_NOEXCEPT

Compare duration with another.

If duration < other, returns -1

else if duration > other, returns 1

else returns 0

____________________________________________________________________________________________________

Non-member mathematical operators

template <typename TRep1, typename TPeriod1, typename TRep2, typename TPeriod2>

ETL_CONSTEXPR14

etl::common_type_t<etl::chrono::duration<TRep1, TPeriod1>,

etl::chrono::duration<TRep2, TPeriod2>>

operator +(const etl::chrono::duration<TRep1, TPeriod1>& lhs,

const etl::chrono::duration<TRep2, TPeriod2>& rhs)

ETL_NOEXCEPT

Operator +

______________________________________________

template <typename TRep1, typename TPeriod1, typename TRep2, typename TPeriod2>

ETL_CONSTEXPR14

etl::common_type_t<etl::chrono::duration<TRep1, TPeriod1>,

etl::chrono::duration<TRep2, TPeriod2> >::type

operator -(const etl::chrono::duration<TRep1, TPeriod1>& lhs,

const etl::chrono::duration<TRep2, TPeriod2>& rhs)

ETL_NOEXCEPT

Operator -

______________________________________________

template <typename TRep1, typename TPeriod1, typename TRep2>

ETL_CONSTEXPR14

etl::chrono::duration<etl::common_type_t<TRep1, TRep2>, TPeriod1>>

operator *(const etl::chrono::duration<TRep1, TPeriod1>& lhs,

const TRep2& rhs)

ETL_NOEXCEPT

Operator *

Enabled if TRep2 is not a specialization of etl::chrono::duration.

______________________________________________

template <typename TRep1, typename TRep2, typename TPeriod2>

ETL_CONSTEXPR14

etl::chrono::duration<etl::common_type_t<TRep1, TRep2>, TPeriod2>

operator *(const TRep1& lhs,

const etl::chrono::duration<TRep2, TPeriod2>& rhs)

ETL_NOEXCEPT

Operator *

______________________________________________

template <typename TRep1, typename TPeriod1, typename TRep2>

ETL_CONSTEXPR14

etl::common_type_t<TRep1, TRep2>, TPeriod1>

operator /(const etl::chrono::duration<TRep1, TPeriod1>& lhs,

const TRep2& rhs)

ETL_NOEXCEPT

Operator /

Enabled if TRep2 is not a specialization of etl::chrono::duration.

______________________________________________

template <typename TRep1, typename TPeriod1, typename TRep2, typename TPeriod2>

ETL_CONSTEXPR14

etl::common_type_t<TRep1, TRep2>

operator /(const etl::chrono::duration<TRep1, TPeriod1>& lhs,

const etl::chrono::duration<TRep2, TPeriod2>& rhs)

ETL_NOEXCEPT

Operator /

______________________________________________

template <typename TRep1, typename TPeriod1, typename TRep2>

ETL_CONSTEXPR14

etl::chrono::duration<etl::common_type_t<TRep1, TRep2>, TPeriod1>

operator %(const etl::chrono::duration<TRep1, TPeriod1>& lhs,

const TRep2& rhs)

ETL_NOEXCEPT

Operator %

______________________________________________

template <typename TRep1, typename TPeriod1, typename TRep2, typename TPeriod2>

ETL_CONSTEXPR14

etl::common_type_t<etl::chrono::duration<TRep1, TPeriod1>,

etl::chrono::duration<TRep2, TPeriod2>>

operator %(const etl::chrono::duration<TRep1, TPeriod1>& lhs,

const etl::chrono::duration<TRep2, TPeriod2>& rhs)

ETL_NOEXCEPT

Operator %

____________________________________________________________________________________________________

Non-member comparison operators

template <typename TRep1, typename TPeriod1, typename TRep2, typename TPeriod2>

ETL_CONSTEXPR14

bool operator ==(const etl::chrono::duration<TRep1, TPeriod1>& lhs,

const etl::chrono::duration<TRep2, TPeriod2>& rhs)

ETL_NOEXCEPT

Checks for equality.

______________________________________________

template <typename TRep1, typename TPeriod1, typename TRep2, typename TPeriod2>

ETL_CONSTEXPR14

bool operator !=(const etl::chrono::duration<TRep1, TPeriod1>& lhs,

const etl::chrono::duration<TRep2, TPeriod2>& rhs)

ETL_NOEXCEPT

Checks for inequality.

______________________________________________

template <typename TRep1, typename TPeriod1, typename TRep2, typename TPeriod2>

ETL_CONSTEXPR14

bool operator <(const etl::chrono::duration<TRep1, TPeriod1>& lhs,

const etl::chrono::duration<TRep2, TPeriod2>& rhs)

ETL_NOEXCEPT

Checks for less-than.

______________________________________________

template <typename TRep1, typename TPeriod1, typename TRep2, typename TPeriod2>

ETL_CONSTEXPR14

bool operator <=(const etl::chrono::duration<TRep1, TPeriod1>& lhs,

const etl::chrono::duration<TRep2, TPeriod2>& rhs)

ETL_NOEXCEPT

Checks for less-than-or-equal.

______________________________________________

template <typename TRep1, typename TPeriod1, typename TRep2, typename TPeriod2>

ETL_CONSTEXPR14

bool operator >(const etl::chrono::duration<TRep1, TPeriod1>& lhs,

const etl::chrono::duration<TRep2, TPeriod2>& rhs)

ETL_NOEXCEPT

Checks for greater-than.

______________________________________________

template <typename TRep1, typename TPeriod1, typename TRep2, typename TPeriod2>

ETL_CONSTEXPR14

bool operator >=(const etl::chrono::duration<TRep1, TPeriod1>& lhs,

const etl::chrono::duration<TRep2, TPeriod2>& rhs)

ETL_NOEXCEPT

Checks for greater-than-or-equal.

______________________________________________

template <typename TRep1, typename TPeriod1, typename TRep2, typename TPeriod2>

[[nodiscard]]

constexpr

auto operator <=>(const etl::chrono::duration<TRep1, TPeriod1>& lhs,

const etl::chrono::duration<TRep2, TPeriod2>& rhs)

noexcept

Spaceship operator.

C++20

____________________________________________________________________________________________________

common_type

template <typename TRep1, typename TPeriod1, typename TRep2, typename TPeriod2>

struct common_type<etl::chrono::duration<TRep1, TPeriod1>, etl::chrono::duration<TRep2, TPeriod2>>

etl::common_type specialisation for etl::duration.

____________________________________________________________________________________________________

Hash

template <typename TRep, typename TPeriod>

struct hash<etl::chrono::duration<TRep, TPeriod>>

____________________________________________________________________________________________________

Pre-defined duration types

etl::chrono::years

etl::chrono::months

etl::chrono::weeks

etl::chrono::days

etl::chrono::hours

etl::chrono::minutes

etl::chrono::seconds

etl::chrono::milliseconds

etl::chrono::microseconds

etl::chrono::nanoseconds

____________________________________________________________________________________________________

duration_cast

template <typename TToDuration, typename TRep, typename TPeriod>

ETL_CONSTEXPR14

TToDuration duration_cast(const etl::chrono::duration<TRep, TPeriod>& d)

ETL_NOEXCEPT

Converts from one duration type to another.

chrono.h