core::arch::x86_64

Function _mm_maskz_gf2p8mul_epi8

source 
pub unsafe fn _mm_maskz_gf2p8mul_epi8(
    k: __mmask16,
    a: __m128i,
    b: __m128i,
) -> __m128i
🔬This is a nightly-only experimental API. (stdarch_x86_avx512 #111137)
Available on (x86 or x86-64) and target feature gfni,avx512bw,avx512vl and x86-64 only.
Expand description

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 zeroed in the result if the corresponding mask bit is not set. Otherwise the computation result is written into the result.

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