_mm_maskz_mullo_epi32
Classification
AVX-512, Arithmetic, CPUID Test: AVX512F
Header File
Instruction
VPMULLD xmm {z}, xmm, xmm
Synopsis
_mm_maskz_mullo_epi32(__mmask8 k, __m128i a, __m128i b);
Description
Multiply the packed 32-bit integers in "a" and "b", producing intermediate 64-bit integers, and store the low 32 bits of the intermediate integers in "dst" using zeromask "k" (elements are zeroed out when the corresponding mask bit is not set).
Operation
FOR j := 0 to 3
i := j*32
IF k[j]
tmp[63:0] := a[i+31:i] * b[i+31:i]
dst[i+31:i] := tmp[31:0]
ELSE
dst[i+31:i] := 0
FI
ENDFOR
dst[MAX:128] := 0