std::atomic_ref<T>::fetch_max

value_type fetch_max( value_type arg,
                      std::memory_order order =
                          std::memory_order_seq_cst ) const noexcept;

Atomically replaces the current value of the referenced object with the result of std::max of the value and arg. That is, it performs atomic maximum operation. The operation is a read-modify-write operation. Memory is affected according to the value of order.

If T is a pointer type and the pointers point to different complete objects (or subobjects thereof), pointer comparison does not establish a strict weak ordering.

This overload participates in overload resolution only if std::is_const_v<T> is false.

Parameters

Return value

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

Notes

Example