_mm512_extractf64x2_pd
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512DQ
Header File
Instruction
VEXTRACTF64X2 xmm, zmm, imm8
Synopsis
_mm512_extractf64x2_pd(__m512d a, int imm8);
Description
Extract 128 bits (composed of 2 packed double-precision (64-bit) floating-point elements) from "a", selected with "imm8", and store the result in "dst".
Operation
CASE imm8[1:0] OF
0: dst[127:0] := a[127:0]
1: dst[127:0] := a[255:128]
2: dst[127:0] := a[383:256]
3: dst[127:0] := a[511:384]
ESAC
dst[MAX:128] := 0