mp_units::utility::operator-

Negates the wrapped value

Synopsis

Declared in <mp-units/utility/constrained.h>

[[nodiscard]]
constexpr
constrained<decltype(-std::declval<T>()), ErrorPolicy>
operator-(constrained const& x);

NOTE

This function is a hidden friend of constrained, declared only inside that class: it can be found only through argument-dependent lookup.

Return Value

the wrapped result of negating x

NOTE

The return value should not be discarded.

Parameters

NameDescription
xthe wrapped value to negate