jam::units::space< Rep, Ratio > Class Template Reference

A count of storage units; Ratio measures one unit in bytes. Integer arithmetic and conversions terminate on overflow. Floating arithmetic follows its representation. Like chrono, integral destinations accept only lossless unit conversions implicitly; use space_cast, floor, ceil or round otherwise. There is no implicit conversion to an untyped count. More...

Public Types
using	rep = Rep
	Count representation.
using	ratio = typename Ratio::type

Public Member Functions
constexpr	space ()=default
	Default-initialize the representation, as with chrono durations.
template<class R> requires std::is_arithmetic_v<R> && (std::floating_point<Rep> || !std::floating_point<R>)
constexpr	space (R count) noexcept
	Explicitly construct from a count, without implicit float-to-integer loss.
template<class R, class P> requires (std::floating_point<Rep> || (!std::floating_point<R> && std::ratio_divide<P, ratio>::den == 1))
constexpr	space (space< R, P > other) noexcept
	Implicit conversion when the destination can express every source tick.
constexpr rep	count () const noexcept
	Retrieve the count in this unit explicitly.
constexpr space	operator+ () const noexcept
	Preserve the count.
constexpr space	operator- () const noexcept
	Negate the count; unrepresentable negation terminates.
constexpr space &	operator++ () noexcept
	Add one unit.
constexpr space	operator++ (int) noexcept
	Add one unit, returning the previous count.
constexpr space &	operator-- () noexcept
	Subtract one unit.
constexpr space	operator-- (int) noexcept
	Subtract one unit, returning the previous count.
constexpr space &	operator+= (space other) noexcept
	Add an exactly convertible amount.
constexpr space &	operator-= (space other) noexcept
	Subtract an exactly convertible amount.
constexpr space &	operator*= (rep scalar) noexcept
	Multiply by a scalar count.
constexpr space &	operator/= (rep scalar) noexcept
	Divide by a scalar count.
constexpr space &	operator%= (rep scalar) noexcept
	Remainder of an integral count divided by a scalar.
constexpr space &	operator%= (space other) noexcept
	Remainder after whole multiples of an amount.

Static Public Member Functions
static constexpr space	zero () noexcept
	Zero units.
static constexpr space	min () noexcept
	Least representable count.
static constexpr space	max () noexcept
	Greatest representable count.

Detailed Description

template<class Rep, class Ratio = std::ratio<1>>
class jam::units::space< Rep, Ratio >

A count of storage units; Ratio measures one unit in bytes. Integer arithmetic and conversions terminate on overflow. Floating arithmetic follows its representation. Like chrono, integral destinations accept only lossless unit conversions implicitly; use space_cast, floor, ceil or round otherwise. There is no implicit conversion to an untyped count.

Definition at line 82 of file units.ccm.

Member Typedef Documentation

ratio

template<class Rep, class Ratio = std::ratio<1>>

using jam::units::space< Rep, Ratio >::ratio = typename Ratio::type

Bytes per unit, in lowest terms.

Definition at line 89 of file units.ccm.

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

• units.ccm