_mm_maskz_max_epu64
Classification
AVX-512, Arithmetic, CPUID Test: AVX512F
Header File
Instruction
VPMAXUQ xmm {z}, xmm, xmm
Synopsis
_mm_maskz_max_epu64(__mmask8 k, __m128i a, __m128i b);
Description
Compare packed unsigned 64-bit integers in "a" and "b", and store packed maximum values in "dst" using zeromask "k" (elements are zeroed out when the corresponding mask bit is not set).
Operation
FOR j := 0 to 1
i := j*64
IF k[j]
dst[i+63:i] := MAX(a[i+63:i], b[i+63:i])
ELSE
dst[i+63:i] := 0
FI
ENDFOR
dst[MAX:128] := 0