std::bitset::operator&=,|=,^=,~(3)

NAME
std::bitset::operator&=,|=,^=,~ - std::bitset::operator&=,|=,^=,~

Synopsis
   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.

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
   operator<<=
   operator>>= performs binary shift left and shift right
   operator<< (public member function)
   operator>>