Standard library header <bitset>

 

C++

Language

Standard Library Headers

Freestanding and hosted implementations

Named requirements

Language support library

Concepts library(C++20)

Diagnostics library

Utilities library

Strings library

Containers library

Iterators library

Ranges library(C++20)

Algorithms library

Numerics library

Localizations library

Input/output library

Filesystem library(C++17)

Regular expressions library(C++11)

Atomic operations library(C++11)

Thread support library(C++11)

Technical Specifications

 

Standard Library headers

Language Support
<cstddef> <cstdlib> <version> <limits> <climits>	<cfloat> <cstdint> <new> <typeinfo>	<source_location> <exception> <initializer_list> <compare>	<coroutine> <csignal> <csetjmp> <cstdarg>
Concepts
<concepts>
Diagnostics
<stdexcept>	<cassert>	<cerrno>	<system_error>
General utilities
<utility> <memory> <memory_resource> <scoped_allocator>	<bitset> <tuple> <optional> <any>	<variant> <type_traits> <ratio> <chrono>	<typeindex> <functional> <ctime>
Strings
<string> <string_view> <cstring>	<charconv> <format>	<cctype> <cwctype>	<cwchar> <cuchar>
Localization
<locale>	<codecvt>	<clocale>
Containers
<span> <array> <vector>	<deque> <forward_list> <list>	<map> <set> <queue>	<unordered_map> <unordered_set> <stack>
Iterators
<iterator>
Ranges
<ranges>
Algorithms
<algorithm>	<execution>
Numerics
<complex> <random>	<valarray> <numeric>	<bit> <numbers>	<cfenv> <cmath>
Input/Output
<iosfwd> <ios> <iomanip> <streambuf>	<istream> <ostream> <iostream>	<sstream> <fstream> <syncstream>	<cstdio> <cinttypes> <strstream>
Regular expressions
<regex>
Filesystem support
<filesystem>
Thread support
<thread> <atomic> <mutex>	<shared_mutex> <condition_variable> <future>	<stop_token> <semaphore>	<latch> <barrier>
C compatibility
<ciso646> <cstdalign>	<cstdbool> <ccomplex>	<ctgmath>

 

This header is part of the general utility library.

Includes
<string>	std::basic_string class template
<iosfwd>	Forward declarations of all classes in the input/output library
Classes
bitset	implements constant length bit array (class template)
std::hash<std::bitset> (C++11)	hash support for std::bitset (class template specialization)
Forward declarations
Defined in header <functional>
hash (C++11)	hash function object (class template)
Functions
operator&operator|operator^	performs binary logic operations on bitsets (function template)
operator<<operator>>	performs stream input and output of bitsets (function template)

Synopsis

#include <string>#include <iosfwd> // for istream, ostream   namespace std {template<size_t N>class bitset;   // bitset operatorstemplate<size_t N> bitset<N> operator&(const bitset<N>&, const bitset<N>&)noexcept;template<size_t N> bitset<N> operator|(const bitset<N>&, const bitset<N>&)noexcept;template<size_t N> bitset<N> operator^(const bitset<N>&, const bitset<N>&)noexcept;template<class CharT, class Traits, size_t N> basic_istream<CharT, Traits>& operator>>(basic_istream<CharT, Traits>& is, bitset<N>& x);template<class CharT, class Traits, size_t N> basic_ostream<CharT, Traits>& operator<<(basic_ostream<CharT, Traits>& os, const bitset<N>& x);}

Class template std::bitset

namespace std {template<size_t N>class bitset {public:// bit referenceclass reference {friendclass bitset; reference()noexcept;   public: reference(const reference&)=default; ~reference(); reference& operator=(bool x)noexcept;// for b[i] = x; reference& operator=(const reference&)noexcept;// for b[i] = b[j];bool operator~()constnoexcept;// flips the bit operator bool()constnoexcept;// for x = b[i]; reference& flip()noexcept;// for b[i].flip();};   // constructorsconstexpr bitset()noexcept;constexpr bitset(unsignedlonglong val)noexcept;template<class CharT, class Traits, class Allocator>explicit bitset(const basic_string<CharT, Traits, Allocator>& str, typename basic_string<CharT, Traits, Allocator>::size_type pos =0, typename basic_string<CharT, Traits, Allocator>::size_type n = basic_string<CharT, Traits, Allocator>::npos, CharT zero = CharT('0'), CharT one = CharT('1'));template<class CharT>explicit bitset(const charT* str, typename basic_string<CharT>::size_type n = basic_string<CharT>::npos, CharT zero = CharT('0'), CharT one = CharT('1'));   // bitset operations bitset<N>& operator&=(const bitset<N>& rhs)noexcept; bitset<N>& operator|=(const bitset<N>& rhs)noexcept; bitset<N>& operator^=(const bitset<N>& rhs)noexcept; bitset<N>& operator<<=(size_t pos)noexcept; bitset<N>& operator>>=(size_t pos)noexcept; bitset<N>& set()noexcept; bitset<N>& set(size_t pos, bool val =true); bitset<N>& reset()noexcept; bitset<N>& reset(size_t pos); bitset<N> operator~()constnoexcept; bitset<N>& flip()noexcept; bitset<N>& flip(size_t pos);   // element accessconstexprbool operator[](size_t pos)const;// for b[i]; reference operator[](size_t pos);// for b[i];   unsignedlong to_ulong()const;unsignedlonglong to_ullong()const;template<class CharT =char, class Traits = char_Traits<CharT>, class Allocator = allocator<CharT>> basic_string<CharT, Traits, Allocator> to_string(CharT zero = CharT('0'), CharT one = CharT('1'))const;   size_t count()constnoexcept;constexpr size_t size()constnoexcept;bool operator==(const bitset<N>& rhs)constnoexcept;bool test(size_t pos)const;bool all()constnoexcept;bool any()constnoexcept;bool none()constnoexcept; bitset<N> operator<<(size_t pos)constnoexcept; bitset<N> operator>>(size_t pos)constnoexcept;};   // hash supporttemplate<class T>struct hash;template<size_t N>struct hash<bitset<N>>;}