Function _mm512_mask_mulhrs_epi16
#[target_feature(enable = "avx512bw")]
pub fn _mm512_mask_mulhrs_epi16(src: __m512i, k: __mmask32, a: __m512i, b: __m512i) -> __m512iMultiply packed signed 16-bit integers in a and b, producing intermediate signed 32-bit integers. Truncate each intermediate integer to the 18 most significant bits, round by adding 1, and store bits [16:1] to dst using writemask k (elements are copied from src when the corresponding mask bit is not set).