std::atomic<T>::fetch_and

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atomic_fetch_andatomic_fetch_and_explicit (C++11)(C++11)
atomic_fetch_oratomic_fetch_or_explicit (C++11)(C++11)
atomic_fetch_xoratomic_fetch_xor_explicit (C++11)(C++11)
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member only of `atomic<Integral` `>` specializations
T fetch_and( T arg, std::memory_order order = std::memory_order_seq_cst ) noexcept ;	(1)	(since C++11)
T fetch_and( 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 AND 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)

(since C++20)

Parameters

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

Compiler support
Freestanding and hosted
Language
Standard library
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Feature test macros (C++20)
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Execution support library (C++26)
Technical specifications
Symbols index
External libraries

Member functions
atomic::atomic
atomic::operator=
atomic::is_lock_free
atomic::store
atomic::load
atomic::operator T
atomic::exchange
atomic::compare_exchange_strongatomic::compare_exchange_weak
atomic::wait (C++20)
atomic::notify_one (C++20)
atomic::notify_all (C++20)
Constants
atomic::is_always_lock_free (C++17)
Specialized member functions
Specialized for integral, floating-point (C++20) and pointer types
atomic::fetch_add
atomic::fetch_sub
atomic::operator+=atomic::operator-=
Specialized for integral and pointer types only
atomic::fetch_max (C++26)
atomic::fetch_min (C++26)
atomic::operator++atomic::operator++(int)atomic::operator--atomic::operator--(int)
Specialized for integral types only
atomic::fetch_and
atomic::fetch_or
atomic::fetch_xor
atomic::operator&=atomic::operator\|=atomic::operator^=

std::atomic<T>::fetch_and

Parameters

Return value

See also

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