26 Numerics library [numerics]

26.5 Bit manipulation [bit]

26.5.2 Header <bit> synopsis [bit.syn]

namespace std { // [bit.cast], bit_­cast template<class To, class From> constexpr To bit_cast(const From& from) noexcept; // [bit.pow.two], integral powers of 2 template<class T> constexpr bool has_single_bit(T x) noexcept; template<class T> constexpr T bit_ceil(T x); template<class T> constexpr T bit_floor(T x) noexcept; template<class T> constexpr T bit_width(T x) noexcept; // [bit.rotate], rotating template<class T> [[nodiscard]] constexpr T rotl(T x, int s) noexcept; template<class T> [[nodiscard]] constexpr T rotr(T x, int s) noexcept; // [bit.count], counting template<class T> constexpr int countl_zero(T x) noexcept; template<class T> constexpr int countl_one(T x) noexcept; template<class T> constexpr int countr_zero(T x) noexcept; template<class T> constexpr int countr_one(T x) noexcept; template<class T> constexpr int popcount(T x) noexcept; // [bit.endian], endian enum class endian { little = see below, big = see below, native = see below }; }