_mm256_maskz_unpackhi_pd
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512F
Header File
immintrin.h
Instruction
VUNPCKHPD ymm {z}, ymm, ymm
Synopsis
 _mm256_maskz_unpackhi_pd(__mmask8 k, __m256d a, __m256d b);
Description
Unpack and interleave double-precision (64-bit) floating-point elements from the high half of each 128-bit lane in "a" and "b", and store the results in "dst" using zeromask "k" (elements are zeroed out when the corresponding mask bit is not set).
Operation
DEFINE INTERLEAVE_HIGH_QWORDS(src1[127:0], src2[127:0]) {
	dst[63:0] := src1[127:64] 
	dst[127:64] := src2[127:64] 
	RETURN dst[127:0]
}
tmp_dst[127:0] := INTERLEAVE_HIGH_QWORDS(a[127:0], b[127:0])
tmp_dst[255:128] := INTERLEAVE_HIGH_QWORDS(a[255:128], b[255:128])
FOR j := 0 to 3
	i := j*64
	IF k[j]
		dst[i+63:i] := tmp_dst[i+63:i]
	ELSE
		dst[i+63:i] := 0
	FI
ENDFOR
dst[MAX:256] := 0