std::atomic_ref<T>::fetch_max

Since C++26

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.

# Declarations

Provided only when T is an integral type other than cv bool or a pointer-to-object type

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

(since C++26)

# Parameters

arg: the other argument of std::max
order: memory order constraints to enforce

# Return value

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

# Notes

Feature-test macro Value Std Feature __cpp_lib_atomic_min_max 202403L (C++26) Atomic minimum/maximum

# Example

This section is incompleteReason: no example