_mm256_mask_max_epi64
Classification
AVX-512, Arithmetic, CPUID Test: AVX512F
Header File
Instruction
VPMAXSQ ymm {k}, ymm, ymm
Synopsis
_mm256_mask_max_epi64(__m256i src, __mmask8 k, __m256i a, __m256i b);
Description
Compare packed signed 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 3
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:256] := 0