mp_units::operator-

Subtraction operator

Synopsis

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

template<auto R1, auto PO1, typename Rep1, auto R2, typename Rep2>
  requires ReferenceOf<MP_UNITS_NTTP_HACK(decltype(R2)), get_quantity_spec(PO1)>
[[nodiscard]] constexpr QuantityPoint auto operator-(quantity_point<R1, PO1, Rep1> const& qp,
                                                     quantity<R2, Rep2> const& q)
  requires requires { qp.quantity_ref_from(PO1) - q; };

Note

This function is a hidden friend of quantity_point, declared inside an implementation-defined base class: it can be found only through argument-dependent lookup.

Return Value

Note

The return value should not be discarded.

Parameters

Name	Description
qp	The left operand
q	The right operand