标准库标头 <stdbit.h> (C++26)

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<any> (C++17)
<bitset>
<bit> (C++20)
<charconv> (C++17)
<expected> (C++23)
<format> (C++20)
<functional>
<optional> (C++17)
<stdbit.h> (C++26)
<tuple> (C++11)
<typeindex> (C++11)
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<variant> (C++17)
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本标头原属于 C 标准库（<stdbit.h>）。

这个 C 兼容性标头是通用工具库的一部分，特别是，它提供了几个用于访问、操纵和处理单独的位和位序列的函数模板。标量类型的字节序（端序）可以用 __STDC_ENDIAN_NATIVE__ 设施检查。

未指明 <stdbit.h> 是否提供命名空间 std 中的任何声明。


本节未完成
原因：add descriptors for functions and constants

目录

函数

常量

[编辑] 概要

#define __STDC_VERSION_STDBIT_H__ 202311L
 
#define __STDC_ENDIAN_BIG__    /* 见描述 */
#define __STDC_ENDIAN_LITTLE__ /* 见描述 */
#define __STDC_ENDIAN_NATIVE__ /* 见描述 */
 
unsigned int stdc_leading_zeros_uc(unsigned char value);
unsigned int stdc_leading_zeros_us(unsigned short value);
unsigned int stdc_leading_zeros_ui(unsigned int value);
unsigned int stdc_leading_zeros_ul(unsigned long int value);
unsigned int stdc_leading_zeros_ull(unsigned long long int value);
template<class T>
/* 见描述 */ stdc_leading_zeros(T value);
 
unsigned int stdc_leading_ones_uc(unsigned char value);
unsigned int stdc_leading_ones_us(unsigned short value);
unsigned int stdc_leading_ones_ui(unsigned int value);
unsigned int stdc_leading_ones_ul(unsigned long int value);
unsigned int stdc_leading_ones_ull(unsigned long long int value);
template<class T>
/* 见描述 */ stdc_leading_ones(T value);
 
unsigned int stdc_trailing_zeros_uc(unsigned char value);
unsigned int stdc_trailing_zeros_us(unsigned short value);
unsigned int stdc_trailing_zeros_ui(unsigned int value);
unsigned int stdc_trailing_zeros_ul(unsigned long int value);
unsigned int stdc_trailing_zeros_ull(unsigned long long int value);
template<class T>
/* 见描述 */ stdc_trailing_zeros(T value);
 
unsigned int stdc_trailing_ones_uc(unsigned char value);
unsigned int stdc_trailing_ones_us(unsigned short value);
unsigned int stdc_trailing_ones_ui(unsigned int value);
unsigned int stdc_trailing_ones_ul(unsigned long int value);
unsigned int stdc_trailing_ones_ull(unsigned long long int value);
template<class T>
/* 见描述 */ stdc_trailing_ones(T value);
 
unsigned int stdc_first_leading_zero_uc(unsigned char value);
unsigned int stdc_first_leading_zero_us(unsigned short value);
unsigned int stdc_first_leading_zero_ui(unsigned int value);
unsigned int stdc_first_leading_zero_ul(unsigned long int value);
unsigned int stdc_first_leading_zero_ull(unsigned long long int value);
template<class T>
/* 见描述 */ stdc_first_leading_zero(T value);
 
unsigned int stdc_first_leading_one_uc(unsigned char value);
unsigned int stdc_first_leading_one_us(unsigned short value);
unsigned int stdc_first_leading_one_ui(unsigned int value);
unsigned int stdc_first_leading_one_ul(unsigned long int value);
unsigned int stdc_first_leading_one_ull(unsigned long long int value);
template<class T>
/* 见描述 */ stdc_first_leading_one(T value);
 
unsigned int stdc_first_trailing_zero_uc(unsigned char value);
unsigned int stdc_first_trailing_zero_us(unsigned short value);
unsigned int stdc_first_trailing_zero_ui(unsigned int value);
unsigned int stdc_first_trailing_zero_ul(unsigned long int value);
unsigned int stdc_first_trailing_zero_ull(unsigned long long int value);
template<class T>
/* 见描述 */ stdc_first_trailing_zero(T value);
 
unsigned int stdc_first_trailing_one_uc(unsigned char value);
unsigned int stdc_first_trailing_one_us(unsigned short value);
unsigned int stdc_first_trailing_one_ui(unsigned int value);
unsigned int stdc_first_trailing_one_ul(unsigned long int value);
unsigned int stdc_first_trailing_one_ull(unsigned long long int value);
template<class T>
/* 见描述 */ stdc_first_trailing_one(T value);
 
unsigned int stdc_count_zeros_uc(unsigned char value);
unsigned int stdc_count_zeros_us(unsigned short value);
unsigned int stdc_count_zeros_ui(unsigned int value);
unsigned int stdc_count_zeros_ul(unsigned long int value);
unsigned int stdc_count_zeros_ull(unsigned long long int value);
template<class T>
/* 见描述 */ stdc_count_zeros(T value);
 
unsigned int stdc_count_ones_uc(unsigned char value);
unsigned int stdc_count_ones_us(unsigned short value);
unsigned int stdc_count_ones_ui(unsigned int value);
unsigned int stdc_count_ones_ul(unsigned long int value);
unsigned int stdc_count_ones_ull(unsigned long long int value);
template<class T>
/* 见描述 */ stdc_count_ones(T value);
 
bool stdc_has_single_bit_uc(unsigned char value);
bool stdc_has_single_bit_us(unsigned short value);
bool stdc_has_single_bit_ui(unsigned int value);
bool stdc_has_single_bit_ul(unsigned long int value);
bool stdc_has_single_bit_ull(unsigned long long int value);
template<class T>
bool stdc_has_single_bit(T value);
 
unsigned int stdc_bit_width_uc(unsigned char value);
unsigned int stdc_bit_width_us(unsigned short value);
unsigned int stdc_bit_width_ui(unsigned int value);
unsigned int stdc_bit_width_ul(unsigned long int value);
unsigned int stdc_bit_width_ull(unsigned long long int value);
template<class T>
/* 见描述 */ stdc_bit_width(T value);
 
unsigned char          stdc_bit_floor_uc(unsigned char value);
unsigned short         stdc_bit_floor_us(unsigned short value);
unsigned int           stdc_bit_floor_ui(unsigned int value);
unsigned long int      stdc_bit_floor_ul(unsigned long int value);
unsigned long long int stdc_bit_floor_ull(unsigned long long int value);
template<class T>
T stdc_bit_floor(T value);
 
unsigned char          stdc_bit_ceil_uc(unsigned char value);
unsigned short         stdc_bit_ceil_us(unsigned short value);
unsigned int           stdc_bit_ceil_ui(unsigned int value);
unsigned long int      stdc_bit_ceil_ul(unsigned long int value);
unsigned long long int stdc_bit_ceil_ull(unsigned long long int value);
template<class T>
T stdc_bit_ceil(T value);

[编辑] 参阅

(C++20)
 位操纵函数[编辑]
来自“https://zh.cppreference.com/mwiki/index.php?title=cpp/header/stdbit.h&oldid=100895”