atomic_fetch_or_explicit Function

Performs a bitwise or on a value and an existing value that is stored in an atomic object.

template <class T>
inline T atomic_fetch_or_explicit(
   volatile atomic<T>* Atom,
   T Value,
   memory_order Order); noexcept
template <class T>
inline T atomic_fetch_or_explicit(
   volatile atomic<T>* Atom,
   T Value,
   memory_order Order); noexcept

Parameters

• Atom
  A pointer to an atomic object that stores a value of type T.

• Value
  A value of type T.

• Order
  A memory_order.

Return Value

The value contained by the atomic object immediately before the operation was performed.

Remarks

The atomic_fetch_or_explicit function performs a read-modify-write operation to replace the stored value of Atom with a bitwise or of Value and the current value that is stored in Atom, within the memory_order constraints specified by Order.

Requirements

Header: atomic

Namespace: std

See Also

Reference

<atomic>

atomic Structure

atomic_fetch_or Function