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>>