mp_units::utility::operator-

Synopsis

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

template<typename U>
requires treat_as_floating_point<U>
[[nodiscard]]
constexpr
auto
operator-(
    safe_int lhs,
    U rhs)
requires requires { static_cast<U>(lhs.value_) - rhs; };

NOTE

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

Return Value

the difference between the wrapped value and rhs

NOTE

The return value should not be discarded.

Template Parameters

Name	Description
U	a floating-point-like type (`treat_as_floating_point<U>` is `true`)

Parameters

Name	Description
lhs	the `safe_int` operand
rhs	the floating-point value to subtract