Function `atomic_xchg`

unsafe fn atomic_xchg<T: Copy, ORD: AtomicOrdering>(dst: *mut T, src: T) -> T

Stores the value at the specified memory location, returning the old value. T must be an integer or pointer type.

The stabilized version of this intrinsic is available on the atomic types via the swap method. For example, AtomicBool::swap.