Defined in header
Atomically replaces the value pointed by
obj with the result of bitwise XOR between the old value of
arg. Returns the value
obj held previously.
The operation is performed as if the following is executed:
std::atomic<T> has no
fetch_xor member (this member is only provided for integral types), the program is ill-formed.
|obj||-||pointer to the atomic object to modify|
|arg||-||the value to bitwise XOR to the value stored in the atomic object|
|order||-||the memory synchronization ordering for this operation: all values are permitted.|
The value immediately preceding the effects of this function in the modification order of
|This section is incomplete|
Reason: no example
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
|DR||Applied to||Behavior as published||Correct behavior|
|P0558R1||C++11|| exact type match required because
| atomically performs bitwise XOR between the argument and the value of the atomic object and obtains the value held previously |
(public member function of
| replaces the atomic object with the result of bitwise OR with a non-atomic argument and obtains the previous value of the atomic |
| replaces the atomic object with the result of bitwise AND with a non-atomic argument and obtains the previous value of the atomic |