Function std::intrinsics::atomic_umin

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

🔬 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

使用无符号比较，使用当前值的最小值。

通过将 Ordering::SeqCst 传递为 order，可以通过 fetch_min 方法在 atomic 无符号整数类型上使用此内联函数的稳定版本。 例如， AtomicU32::fetch_min.