Function _mm512_mask_mulhrs_epi16 

pub fn _mm512_mask_mulhrs_epi16(
    src: __m512i,
    k: __mmask32,
    a: __m512i,
    b: __m512i,
) -> __m512i

Available on x86 and target feature avx512bw only.

Multiply 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).

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