_mm_mask_subs_epu8
Classification
AVX-512, Arithmetic, CPUID Test: AVX512BW
Header File
immintrin.h
Instruction
VPSUBUSB xmm {k}, xmm, xmm
Synopsis
 _mm_mask_subs_epu8(__m128i src, __mmask16 k, __m128i a, __m128i b);
Description
Subtract packed unsigned 8-bit integers in "b" from packed unsigned 8-bit integers in "a" using saturation, and store the results 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] := SaturateU8(a[i+7:i] - b[i+7:i])
	ELSE
		dst[i+7:i] := src[i+7:i]
	FI	
ENDFOR
dst[MAX:128] := 0