_mm_mask_max_epi8
Classification
AVX-512, Arithmetic, CPUID Test: AVX512BW
Header File
Instruction
VPMAXSB xmm {k}, xmm, xmm
Synopsis
_mm_mask_max_epi8(__m128i src, __mmask16 k, __m128i a, __m128i b);
Description
Compare packed signed 8-bit integers in "a" and "b", and store packed maximum values in "dst" using writemask "k" (elements are copied from "src" when the corresponding mask bit is not set).
Operation
FOR j := 0 to 15
i := j*8
IF k[j]
dst[i+7:i] := MAX(a[i+7:i], b[i+7:i])
ELSE
dst[i+7:i] := src[i+7:i]
FI
ENDFOR
dst[MAX:128] := 0