muu/bit.h file

Bit manipulation functions. C++20's <bit> with extra steps.

This header includes a number of others:

• bit_cast.h
• bit_ceil.h
• bit_fill.h
• bit_floor.h
• bit_pack.h
• countl.h
• countr.h
• popcount.h
• byte_reverse.h

Namespaces

namespace muu

The root namespace for all muu functions and types.

Functions

template <typename T>

auto bit_width(T val) -> T constexpr noexcept

Finds the smallest number of bits needed to represent the given value.

template <size_t Index, typename T>

auto byte_select(T val) -> uint8_t constexpr noexcept

Gets a specific byte from an integer.

template <typename T>

auto byte_select(T val, size_t index) -> uint8_t constexpr noexcept

Gets a specific byte from an integer.

template <size_t... ByteIndices, typename T>

auto swizzle(T val) -> auto constexpr noexcept

Select and re-pack arbitrary bytes from an integer.