Function _mm_mask_gf2p8mul_epi8 

pub fn _mm_mask_gf2p8mul_epi8(
    src: __m128i,
    k: __mmask16,
    a: __m128i,
    b: __m128i,
) -> __m128i

Available on x86 and target feature gfni and target feature avx512bw and target feature avx512vl only.

Performs a multiplication in GF(2^8) on the packed bytes. The field is in polynomial representation with the reduction polynomial x^8 + x^4 + x^3 + x + 1.

Uses the writemask in k - elements are copied from src if the corresponding mask bit is not set. Otherwise the computation result is written into the result.

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