pub unsafe fn _mm_mask_gf2p8mul_epi8(
    src: __m128i,
    k: u16,
    a: __m128i,
    b: __m128i
) -> __m128i
🔬 This is a nightly-only experimental API. (stdsimd)
This is supported on x86-64 and target feature avx512gfni,avx512bw,avx512vl 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 copied from src if the corresponding mask bit is not set. Otherwise the computation result is written into the result.

Intel’s documentation