_mm256_mask_max_epu8
Classification
AVX-512, Arithmetic, CPUID Test: AVX512BW
Header File
immintrin.h
Instruction
VPMAXUB ymm {k}, ymm, ymm
Synopsis
 _mm256_mask_max_epu8(__m256i src, __mmask32 k, __m256i a, __m256i 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 31
	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:256] := 0