Function std::intrinsics::atomic_umax_relaxed

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

🔬 This is a nightly-only experimental API.   (core_intrinsics)

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