Function core::arch::wasm32::i64x2_extmul_low_u32x4

pub fn i64x2_extmul_low_u32x4(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 i64x2_mul(i64x2_extend_low_i32x4_u(a), i64x2_extend_low_i32x4_u(b))