_mm_mask_max_epu8
Classification
AVX-512, Arithmetic, CPUID Test: AVX512BW
Header File
immintrin.h
Instruction
VPMAXUB xmm {k}, xmm, xmm
Synopsis
 _mm_mask_max_epu8(__m128i src, __mmask16 k, __m128i a, __m128i b);
Description
Compare packed unsigned 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