mp_units::isnan

Synopses

template<
    auto R,
    typename Rep>
requires requires(Rep v) { isnan(v); } || requires(Rep v) { std::isnan(v); }
[[nodiscard]]
constexpr
bool
isnan(quantity<R, Rep> const& a) noexcept;

template<
    auto R,
    auto PO,
    typename Rep>
requires requires(quantity<R, Rep> q) { isnan(q); }
[[nodiscard]]
constexpr
bool
isnan(quantity_point<R, PO, Rep> const& a) noexcept;

Return Value

• bool: Whether the quantity is a NaN or not.
• bool: Whether the quantity point is a NaN or not.

Parameters