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C++

function

std::bitset operators

member functions	bitset& operator&= (const bitset& rhs);bitset& operator\|= (const bitset& rhs);bitset& operator^= (const bitset& rhs);bitset& operator<<= (size_t pos);bitset& operator>>= (size_t pos);bitset operator~() const;bitset operator<<(size_t pos) const;bitset operator>>(size_t pos) const;bool operator== (const bitset& rhs) const;bool operator!= (const bitset& rhs) const;
non-member functions	template<size_t N> bitset<N> operator& (const bitset<N>& lhs, const bitset<N>& rhs);template<size_t N> bitset<N> operator\| (const bitset<N>& lhs, const bitset<N>& rhs);template<size_t N> bitset<N> operator^ (const bitset<N>& lhs, const bitset<N>& rhs);
iostream inserters/extractors	template<class charT, class traits, size_t N> basic_istream<charT, traits>& operator>> (basic_istream<charT,traits>& is, bitset<N>& rhs);template<class charT, class traits, size_t N> basic_ostream<charT, traits>& operator<< (basic_ostream<charT,traits>& os, const bitset<N>& rhs);

member functions

bitset& operator&= (const bitset& rhs);bitset& operator|= (const bitset& rhs);bitset& operator^= (const bitset& rhs);bitset& operator<<= (size_t pos);bitset& operator>>= (size_t pos);bitset operator~() const;bitset operator<<(size_t pos) const;bitset operator>>(size_t pos) const;bool operator== (const bitset& rhs) const;bool operator!= (const bitset& rhs) const;

non-member functions

template<size_t N>  bitset<N> operator& (const bitset<N>& lhs, const bitset<N>& rhs);template<size_t N>  bitset<N> operator| (const bitset<N>& lhs, const bitset<N>& rhs);template<size_t N>  bitset<N> operator^ (const bitset<N>& lhs, const bitset<N>& rhs);

iostream inserters/extractors

template<class charT, class traits, size_t N>  basic_istream<charT, traits>&    operator>> (basic_istream<charT,traits>& is, bitset<N>& rhs);template<class charT, class traits, size_t N>  basic_ostream<charT, traits>&    operator<< (basic_ostream<charT,traits>& os, const bitset<N>& rhs);

member functions	bitset& operator&= (const bitset& rhs) noexcept;bitset& operator\|= (const bitset& rhs) noexcept;bitset& operator^= (const bitset& rhs) noexcept;bitset& operator<<= (size_t pos) noexcept;bitset& operator>>= (size_t pos) noexcept;bitset operator~() const noexcept;bitset operator<<(size_t pos) const noexcept;bitset operator>>(size_t pos) const noexcept;bool operator== (const bitset& rhs) const noexcept;bool operator!= (const bitset& rhs) const noexcept;
non-member functions	template<size_t N> bitset<N> operator& (const bitset<N>& lhs, const bitset<N>& rhs) noexcept;template<size_t N> bitset<N> operator\| (const bitset<N>& lhs, const bitset<N>& rhs) noexcept;template<size_t N> bitset<N> operator^ (const bitset<N>& lhs, const bitset<N>& rhs) noexcept;
iostream inserters/extractors	template<class charT, class traits, size_t N> basic_istream<charT, traits>& operator>> (basic_istream<charT,traits>& is, bitset<N>& rhs);template<class charT, class traits, size_t N> basic_ostream<charT, traits>& operator<< (basic_ostream<charT,traits>& os, const bitset<N>& rhs);

member functions

bitset& operator&= (const bitset& rhs) noexcept;bitset& operator|= (const bitset& rhs) noexcept;bitset& operator^= (const bitset& rhs) noexcept;bitset& operator<<= (size_t pos) noexcept;bitset& operator>>= (size_t pos) noexcept;bitset operator~() const noexcept;bitset operator<<(size_t pos) const noexcept;bitset operator>>(size_t pos) const noexcept;bool operator== (const bitset& rhs) const noexcept;bool operator!= (const bitset& rhs) const noexcept;

non-member functions

template<size_t N>  bitset<N> operator& (const bitset<N>& lhs, const bitset<N>& rhs) noexcept;template<size_t N>  bitset<N> operator| (const bitset<N>& lhs, const bitset<N>& rhs) noexcept;template<size_t N>  bitset<N> operator^ (const bitset<N>& lhs, const bitset<N>& rhs) noexcept;

iostream inserters/extractors

template<class charT, class traits, size_t N>  basic_istream<charT, traits>&    operator>> (basic_istream<charT,traits>& is, bitset<N>& rhs);template<class charT, class traits, size_t N>  basic_ostream<charT, traits>&    operator<< (basic_ostream<charT,traits>& os, const bitset<N>& rhs);

Bitset operators

Performs the proper bitwise operation using the contents of the bitset.

Parameters

lhs: Left-hand side bitset object (for non-member functions).
rhs: Right-hand side bitset object.
Both the left-hand side and right-hand side bitset objects must have the same amount of bits (i.e., have the same class template parameter, N).
pos: Number of bit locations to be shifted.
is,os: basic_istream or basic_ostream object from which a bitset object is respectively extracted or inserted. The format in which bitsets are inserted/extracted is a sequence of (suitably widened) '0' and '1' characters.

Return value

If a reference: the left-hand side object (*this, is or os).
Otherwise: the result of the operation (either a bitset object, or true or false for the relational operators).

Example

// bitset operators
#include <iostream>       // std::cout
#include <string>         // std::string
#include <bitset>         // std::bitset
int main ()
{
  std::bitset<4> foo (std::string("1001"));
  std::bitset<4> bar (std::string("0011"));
  std::cout << (foo^=bar) << '\n';       // 1010 (XOR,assign)
  std::cout << (foo&=bar) << '\n';       // 0010 (AND,assign)
  std::cout << (foo|=bar) << '\n';       // 0011 (OR,assign)
  std::cout << (foo<<=2) << '\n';        // 1100 (SHL,assign)
  std::cout << (foo>>=1) << '\n';        // 0110 (SHR,assign)
  std::cout << (~bar) << '\n';           // 1100 (NOT)
  std::cout << (bar<<1) << '\n';         // 0110 (SHL)
  std::cout << (bar>>1) << '\n';         // 0001 (SHR)
  std::cout << (foo==bar) << '\n';       // false (0110==0011)
  std::cout << (foo!=bar) << '\n';       // true  (0110!=0011)
  std::cout << (foo&bar) << '\n';        // 0010
  std::cout << (foo|bar) << '\n';        // 0111
  std::cout << (foo^bar) << '\n';        // 0101
  return 0;
}

Output:

Data races

All bit position in the bitset objects involved in the operation are accessed, and -if in a compound assignment- also modified.

Exception safety

The stream inserter/extractors leave all objects in a valid state in case of exception (basic guarantee).
The other operations never throw exceptions (no-throw guarantee).

member classes

member functions

non-member specializations

std::bitset operators

Parameters

Return value

Example

Data races

Exception safety

See also