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std::atomic<T>::fetch_xor

From cppreference.com
< cpp‎ | atomic‎ | atomic
 
 
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member only of atomic<Integral > specializations
T fetch_xor( T arg, std::memory_order order =
                        std::memory_order_seq_cst ) noexcept;
(1) (since C++11)
T fetch_xor( T arg, std::memory_order order =
                        std::memory_order_seq_cst ) volatile noexcept;
(2) (since C++11)

Atomically replaces the current value with the result of bitwise XOR of the value and arg. The operation is read-modify-write operation. Memory is affected according to the value of order.

It is deprecated if std::atomic<T>::is_always_lock_free is false and overload (2) participates in overload resolution.

(since C++20)

[edit] Parameters

arg - the other argument of bitwise XOR
order - memory order constraints to enforce

[edit] Return value

The value immediately preceding the effects of this function in the modification order of *this.

[edit] See also

replaces the atomic object with the result of bitwise XOR with a non-atomic argument and obtains the previous value of the atomic
(function template) [edit]