Function _mm512_maskz_gf2p8mul_epi8
#[target_feature(enable = "gfni", enable = "avx512bw", enable = "avx512f")]
pub fn _mm512_maskz_gf2p8mul_epi8(k: __mmask64, a: __m512i, b: __m512i) -> __m512iPerforms 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 zeroed in the result if the corresponding mask bit is not set. Otherwise the computation result is written into the result.