NAME

std::bitset::flip - std::bitset::flip

Synopsis

bitset& flip(); (until C++11)
bitset& flip() noexcept; (since C++11)
(1) (until C++23)
constexpr bitset& flip() noexcept; (since C++23)
bitset& flip( std::size_t pos ); (2) (until C++23)
constexpr bitset& flip( std::size_t pos ); (since C++23)

Flips bits, i.e. changes true values to false and false values to true. Equivalent
to a logical NOT operation on part or all of the bitset.

1) Flips all bits (like operator~, but in-place)
2) Flips the bit at the position pos.

Parameters

pos - the position of the bit to flip

Return value

*this

Exceptions

2) throws std::out_of_range if pos does not correspond to a valid position within
the bitset.

Example

// Run this code

#include <iostream>
#include <bitset>

int main()
{
std::bitset<4> flops;

std::cout << flops << '\n'
<< flops.flip(0) << '\n'
<< flops.flip(2) << '\n'
<< flops.flip() << '\n';
}

Output:

0000
0001
0101
1010

See also

set sets bits to true or given value
(public member function)
reset sets bits to false
(public member function)
operator&=
operator|= performs binary AND, OR, XOR and NOT
operator^= (public member function)
operator~