< cpp‎ | atomic‎ | atomic
(since C++11)
(member only of atomic<Integral> template specialization)
T fetch_and( T arg,
             std::memory_order order = std::memory_order_seq_cst );
T fetch_and( T arg,
             std::memory_order order = std::memory_order_seq_cst ) volatile;

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


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

Return value

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


noexcept specification:  

See also

replaces the atomic object with the result of logical AND with a non-atomic argument and obtains the previous value of the atomic
(function template)