muu/popcount.h file

Contains the definitions of muu::popcount() and muu::has_single_bit().

Namespaces

namespace muu

The root namespace for all muu functions and types.

Functions

template <typename T>

auto has_single_bit(T val) -> bool constexpr noexcept

Checks if an integral value has only a single bit set.

template <typename T>

auto popcount(T val) -> int constexpr noexcept

Counts the number of set bits (the 'population count') of an unsigned integer.