Provides the C++20 <bit> header if it is not already available. More...

#include <climits>
#include <type_traits>
#include <cstddef>

Include dependency graph for bit:

This graph shows which files directly or indirectly include this file:

Namespaces
	std
	SeqAn specific customisations in the standard namespace.

Enumerations
enum class	std::endian { std::little = __ORDER_LITTLE_ENDIAN__ , std::big = __ORDER_BIG_ENDIAN__ , std::native = __BYTE_ORDER__ }
	Indicates the endianness of all scalar types. More...

Functions
template<class T >
constexpr T	std::bit_ceil (T x) noexcept
	Calculates the smallest integral power of two that is not smaller than x. More...

template<class T >
constexpr T	std::bit_width (T x) noexcept
	If x is not zero, calculates the number of bits needed to store the value x, that is, 1 + floor(log2(x)). If x is zero, returns zero. More...

template<class T >
constexpr int	std::countl_zero (T x) noexcept
	Returns the number of consecutive 0 bits in the value of x, starting from the most significant bit ("left"). More...

template<class T >
constexpr int	std::countr_zero (T x) noexcept
	Returns the number of consecutive 0 bits in the value of x, starting from the least significant bit ("right"). More...

template<class T >
constexpr bool	std::has_single_bit (T x) noexcept
	Checks if x is an integral power of two. More...

template<class T >
constexpr int	std::popcount (T x) noexcept
	Returns the number of 1 bits in the value of x. More...

Detailed Description

Provides the C++20 <bit> header if it is not already available.

Author: Enrico Seiler <enrico.seiler AT fu-berlin.de>; Marcel Ehrhardt <marcel.ehrhardt AT fu-berlin.de>

Namespaces