Function i64x2_extmul_low_i32x4

pub fn i64x2_extmul_low_i32x4(a: v128, b: v128) -> v128

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

Lane-wise integer extended multiplication producing twice wider result than the inputs.

Equivalent of i64x2_mul(i64x2_extend_low_i32x4_s(a), i64x2_extend_low_i32x4_s(b))