core::intrinsics::atomic_cxchgweak_rel

pub unsafe extern "rust-intrinsic" fn atomic_cxchgweak_rel<T>(dst: *mut T, old: T, src: T) -> (T, bool)

Unstable (core_intrinsics)

: intrinsics are unlikely to ever be stabilized, instead they should be used through stabilized interfaces in the rest of the standard library