Function `atomic_cxchg`

unsafe fn atomic_cxchg<T: Copy, ORD_SUCC: AtomicOrdering, ORD_FAIL: AtomicOrdering>(dst: *mut T, old: T, src: T) -> (T, bool)

Stores a value if the current value is the same as 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 compare_exchange method. For example, AtomicBool::compare_exchange.