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Variants

std::bitset<N>:: operator&=,|=,^=,~

From cppreference.net
C++
Utilities library
std::bitset
bitset & operator & = ( const bitset & other ) ;
(1) (noexcept since C++11)
(constexpr since C++23)
bitset & operator | = ( const bitset & other ) ;
(2) (noexcept since C++11)
(constexpr since C++23)
bitset & operator ^ = ( const bitset & other ) ;
(3) (noexcept since C++11)
(constexpr since C++23)
bitset operator~ ( ) const ;
(4) (noexcept since C++11)
(constexpr since C++23)

Performs binary AND, OR, XOR and NOT.

1) Sets the bits to the result of binary AND on corresponding pairs of bits of * this and other .
2) Sets the bits to the result of binary OR on corresponding pairs of bits of * this and other .
3) Sets the bits to the result of binary XOR on corresponding pairs of bits of * this and other .
4) Returns a temporary copy of * this with all bits flipped (binary NOT).

Note that &= , |= , and ^= are only defined for bitsets of the same size N .

Contents

Parameters

other - another bitset

Return value

1-3) * this
4) std:: bitset < N > ( * this ) . flip ( )

Example

Run this code 
#include <bitset>
#include <cstddef>
#include <iostream>
#include <string>
int main()
{
    const std::string pattern_str{"1001"};
    std::bitset<16> pattern{pattern_str}, dest;
    for (std::size_t i = dest.size() / pattern_str.size(); i != 0; --i)
    {
        dest <<= pattern_str.size();
        dest |= pattern;
        std::cout << dest << " (i = " << i << ")\n";
    }
    std::cout << ~dest << " (~dest)\n";
}

Output: 

0000000000001001 (i = 4)
0000000010011001 (i = 3)
0000100110011001 (i = 2)
1001100110011001 (i = 1)
0110011001100110 (~dest)

See also

performs binary shift left and shift right
(public member function)