dc::math Namespace Reference

Functions
template<typename T>
constexpr unsigned	msb_index (T x) noexcept

Function Documentation

msb_index()

template<typename T>

unsigned dc::math::msb_index ( T x )

constexprnoexcept

Definition at line 30 of file math.h.

                                                                 {
    static_assert(std::is_unsigned_v<T>, "DC_MATH_MSB_INDEX requires an unsigned integer type");
 
    if (x == 0) {
        return 0U;
    }
 
    constexpr unsigned bits = sizeof(T) * 8U;
    return bits - 1U - std::countl_zero(x);
}