mp_units::operator*

Multiplication operators

Synopses

Declared in <mp-units/framework/reference.h>

Multiplies a unit by a reference

[[nodiscard]]
consteval
/* implementation-defined */
operator*(
    U1 u1,
    reference r);
» more...

Multiplies a reference by a unit

[[nodiscard]]
consteval
/* implementation-defined */
operator*(
    reference r,
    U2 u2);
» more...

Multiplies two references

[[nodiscard]]
consteval
/* implementation-defined */
operator*(
    reference r1,
    reference<Q2, U2> r2);
» more...

Deleted overload rejecting reference * quantity in favor of quantity * reference

template<
    Reference R,
    typename Q>
requires Quantity<std::remove_cvref_t<Q>>
constexpr
auto
operator*(
    R r,
    Q&& q) = delete;
» more...

Deleted overload rejecting reference * representation in favor of representation * reference

template<
    Reference R,
    typename Rep>
requires RepresentationOf<std::remove_cvref_t<Rep>, get_quantity_spec(R{})>
constexpr
auto
operator*(
    R r,
    Rep&& rep) = delete;
» more...

Rebinds a quantity to a reference obtained by multiplying its own reference by R

template<
    typename FwdQ,
    Reference R,
    Quantity Q = std::remove_cvref_t<FwdQ>>
[[nodiscard]]
constexpr
Quantity auto
operator*(
    FwdQ&& q,
    R r);
» more...

Constructs a quantity from a representation value and a reference

template<
    typename FwdRep,
    Reference R,
    RepresentationOf<get_quantity_spec(R{})> Rep = std::remove_cvref_t<FwdRep>>
requires (!detail::OffsetUnit<decltype(get_unit(R{}))>)
[[nodiscard]]
constexpr
quantity<R{}, Rep>
operator*(
    FwdRep&& lhs,
    R r);
» more...

Deprecated constructor of a quantity from a representation value and an offset-unit reference

template<
    typename FwdRep,
    Reference R,
    RepresentationOf<get_quantity_spec(R{})> Rep = std::remove_cvref_t<FwdRep>>
requires detail::OffsetUnit<decltype(get_unit(R{}))>
[[deprecated("2.3.0: References using offset units (e.g., temperatures) should be constructed with the `delta` or `point` helpers")]]
constexpr
auto
operator*(
    FwdRep&& lhs,
    R r);
» more...

Return Value

  • a reference resulting from multiplying the quantity specification and the unit
  • a reference resulting from multiplying the quantity specifications and the units
  • quantity holding the same numerical value as q, with reference Q::reference * R{}
  • quantity of reference r holding the value of lhs

Parameters

NameDescription
u1the unit to multiply
rthe reference to multiply by
u2the unit to multiply by
r1the reference to multiply
r2the reference to multiply by
qquantity operand (unused)
reprepresentation operand (unused)
lhsrepresentation value to become the quantity's numerical value