_mm512_mask_extractf32x8_ps
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512DQ
Header File
Instruction
VEXTRACTF32X8 ymm {k}, zmm, imm8
Synopsis
_mm512_mask_extractf32x8_ps(__m256 src, __mmask8 k, __m512 a, int imm8);
Description
Extract 256 bits (composed of 8 packed single-precision (32-bit) floating-point elements) from "a", selected with "imm8", and store the results in "dst" using writemask "k" (elements are copied from "src" when the corresponding mask bit is not set).
Operation
CASE imm8[0] OF
0: tmp[255:0] := a[255:0]
1: tmp[255:0] := a[511:256]
ESAC
FOR j := 0 to 7
i := j*32
IF k[j]
dst[i+31:i] := tmp[i+31:i]
ELSE
dst[i+31:i] := src[i+31:i]
FI
ENDFOR
dst[MAX:256] := 0