_mm_maskz_subs_epu8
Classification
AVX-512, Arithmetic, CPUID Test: AVX512BW
Header File
Instruction
VPSUBUSB xmm {z}, xmm, xmm
Synopsis
_mm_maskz_subs_epu8(__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 zeromask "k" (elements are zeroed out 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] := 0
FI
ENDFOR
dst[MAX:128] := 0