_mm_maskz_expand_pd
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512F
Header File
immintrin.h
Instruction
VEXPANDPD xmm {z}, xmm
Synopsis
 _mm_maskz_expand_pd(__mmask8 k, __m128d a);
Description
Load contiguous active double-precision (64-bit) floating-point elements from "a" (those with their respective bit set in mask "k"), and store the results in "dst" using zeromask "k" (elements are zeroed out when the corresponding mask bit is not set).
Operation
m := 0
FOR j := 0 to 1
	i := j*64
	IF k[j]
		dst[i+63:i] := a[m+63:m]
		m := m + 64
	ELSE
		dst[i+63:i] := 0
	FI
ENDFOR
dst[MAX:128] := 0