Subtracts a non-integral constrained value from a safe_int
Declared in <mp-units/utility/safe_int.h>
template<
typename U,
typename CP>
requires (!std::integral<U>)
[[nodiscard]]
constexpr
constrained<decltype(std::declval<T>() - std::declval<U>()), CP>
operator-(
safe_int lhs,
constrained<U, CP> const& rhs);This function is a hidden friend of safe_int, declared only inside that class: it can be found only through argument-dependent lookup.
the wrapped difference of the underlying values
The return value should not be discarded.
| Name | Description |
|---|---|
| lhs | the safe_int to subtract from |
| rhs | the constrained value to subtract |