Function core::arch::wasm64::u16x8_sub_sat

pub fn u16x8_sub_sat(a: v128, b: v128) -> v128

Available on target_family="wasm" and target feature simd128 and WebAssembly only.

减去两个 128 位 vectors，就好像它们是两个包装的八个 16 位无符号整数，溢出时饱和到 0.