_mm_maskz_mullo_epi64
Classification
AVX-512, Arithmetic, CPUID Test: AVX512DQ
Header File
immintrin.h
Instruction
VPMULLQ xmm {z}, xmm, xmm
Synopsis
 _mm_maskz_mullo_epi64(__mmask8 k, __m128i a, __m128i b);
Description
Multiply the packed 64-bit integers in "a" and "b", producing intermediate 128-bit integers, and store the low 64 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 1
	i := j*64
	IF k[j]
		tmp[127:0] := a[i+63:i] * b[i+63:i]
		dst[i+63:i] := tmp[63:0]
	ELSE
		dst[i+63:i] := 0
	FI
ENDFOR
dst[MAX:128] := 0