std::bitset::reset - cppreference.com (original) (raw)
| bitset& reset(); | (1) | (noexcept since C++11) (constexpr since C++23) |
|---|---|---|
| (2) | (constexpr since C++23) |
Sets bits to false.
Sets all bits to false
Sets the bit at position pos to false.
[edit] Parameters
| pos | - | the position of the bit to set |
|---|
[edit] Return value
*this
[edit] Exceptions
- Throws std::out_of_range if pos does not correspond to a valid bit position.
[edit] Example
#include #include int main() { std::bitset<8> b(42); std::cout << "Bitset is " << b << '\n'; b.reset(1); std::cout << "After b.reset(1): " << b << '\n'; b.reset(); std::cout << "After b.reset(): " << b << '\n'; }
Output:
Bitset is 00101010 After b.reset(1): 00101000 After b.reset(): 00000000
[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 doesnot correspond to a valid bit position | always throws anexception in this case |
[edit] See also
| | sets bits to true or given value (public member function) [edit] | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | | toggles the values of bits (public member function) [edit] |