std::bitset<N>::flip
From cppreference.com
C++
Feature test macros (C++20)
Concepts library (C++20)
Metaprogramming library (C++11)
Ranges library (C++20)
Filesystem library (C++17)
Concurrency support library (C++11)
Execution control library (C++26)
Utilities library
Relational operators (deprecated in C++20)
Integer comparison functions
Swap and type operations
Common vocabulary types
(constexpr since C++23)
Type support (basic types, RTTI)
Library feature-test macros (C++20)
(C++11)
(C++20)
(C++26)
(C++20)
Coroutine support (C++20)
Contract support (C++26)
(C++20)(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)(C++20)(C++20)
(C++20)(C++20)(C++20)
General utilities
(C++20)(C++20)(C++20)
(C++20)(C++20)(C++20)
(C++20)
bitset& flip();
(1)
(noexcept since C++11) (constexpr since C++23)
bitset& flip( std::size_t pos );
(2)
(constexpr 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.
[edit] Parameters
pos
-
the position of the bit to flip
[edit] Return value
*this
[edit] Exceptions
[edit] Example
Run this code
#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:
0000 0001 0101 1010
[edit] Defect reports
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
DR | Applied to | Behavior as published | Correct behavior |
---|---|---|---|
LWG 2250 | C++98 | the behavior was undefined if pos does not correspond to a valid bit position |
always throws an exception in this case |