std::bitset::set - cppreference.com (original) (raw)
| bitset& set(); | (1) | (noexcept since C++11) (constexpr since C++23) |
|---|---|---|
| bitset& set( std::size_t pos, bool value = true ); | (2) | (constexpr since C++23) |
Sets all bits to true or sets one bit to specified value.
Sets all bits to true.
Sets the bit at position pos to the value value.
[edit] Parameters
| pos | - | the position (counting from 0, i.e. from least significant to most significant) of the bit to set |
|---|---|---|
| value | - | the value to set the bit to |
[edit] Return value
*this
[edit] Exceptions
- Throws std::out_of_range if pos does not correspond to a valid bit position.
[edit] Example
Output:
00000000 11111111 00000000 10101010
[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 186 | C++98 | the type of value was int | corrected to bool |
| 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 false (public member function) [edit] | | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | | toggles the values of bits (public member function) [edit] |