Function core::arch::x86::_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. (
stdsimd
#48556)Available on (x86 or x86-64) and target feature
gfni,avx512bw,avx512vl
and x86 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.