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

 

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Language support Type support (basic types, RTTI) Library feature-test macros (C++20) Dynamic memory management Program utilities Coroutine support (C++20) Variadic functions is_constant_evaluated (C++20) is_within_lifetime (C++26) initializer_list (C++11) source_location (C++20) Three-way comparison three_way_comparablethree_way_comparable_with (C++20)(C++20) strong_ordering (C++20) weak_ordering (C++20) partial_ordering (C++20) common_comparison_category (C++20) compare_three_way_result (C++20) compare_three_way (C++20) strong_order (C++20) weak_order (C++20) partial_order (C++20) compare_strong_order_fallback (C++20) compare_weak_order_fallback (C++20) compare_partial_order_fallback (C++20)   is_eqis_ltis_lteq (C++20)(C++20)(C++20)   is_neqis_gtis_gteq (C++20)(C++20)(C++20)

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std::bitset

Member types
bitset::reference
Member functions
bitset::bitset
bitset::operator==bitset::operator!= (until C++20)
Element access
bitset::operator[]
bitset::test
bitset::allbitset::anybitset::none (C++11)
bitset::count
Capacity
bitset::size
Modifiers
bitset::operator&=bitset::operator|=bitset::operator^=bitset::operator~
bitset::operator<<=bitset::operator>>=bitset::operator<<bitset::operator>>
bitset::set
bitset::reset
bitset::flip
Conversions
bitset::to_string
bitset::to_ulong
bitset::to_ullong (C++11)
Non-member functions
operator&operator|operator^	operator<<operator>>
Helper classes
std::hash (C++11)

 

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>>=operator<<operator>>

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