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std::bitset<N>::flip

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

#include <bitset>
#include <iostream>
 
int main()
{
    std::bitset<4> flops;
 
    std::cout << flops << '\n'
              << flops.flip(0) << '\n'
              << flops.flip(2) << '\n'
              << flops.flip() << '\n';
}

Output:

set	sets bits to `true` or given value (public member function)
reset	sets bits to `false` (public member function)
operator&=operator\|=operator^=operator~	performs binary AND, OR, XOR and NOT (public member function)
flip	flips all the bits (public member function of `std::vector<bool,Allocator>`)

std::bitset<N>::flip

Parameters

Return value

Exceptions

Example

See also