Function std::intrinsics::atomic_umax_rel

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

🔬 This is a nightly-only experimental API. (core_intrinsics #0)

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