Function core::arch::wasm32::u16x8_extmul_low_u8x16

pub fn u16x8_extmul_low_u8x16(a: v128, b: v128) -> v128

This is supported on WebAssembly and target feature simd128 only.

逐行整数扩展乘法产生比输入宽两倍的结果。

相当于 i16x8_mul(i16x8_extend_low_u8x16(a), i16x8_extend_low_u8x16(b))