_mm512_mask_max_epu64
Classification
AVX-512, Special Math Functions, CPUID Test: AVX512F
Header File
Instruction
VPMAXUQ zmm {k}, zmm, zmm
Synopsis
_mm512_mask_max_epu64(__m512i src, __mmask8 k, __m512i a, __m512i b);
Description
Compare packed unsigned 64-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 7
i := j*64
IF k[j]
dst[i+63:i] := MAX(a[i+63:i], b[i+63:i])
ELSE
dst[i+63:i] := src[i+63:i]
FI
ENDFOR
dst[MAX:512] := 0