_mm_mask_unpacklo_ps
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512F
Header File
Instruction
VUNPCKLPS xmm {k}, xmm, xmm
Synopsis
_mm_mask_unpacklo_ps(__m128 src, __mmask8 k, __m128 a, __m128 b);
Description
Unpack and interleave single-precision (32-bit) floating-point elements from the low half of "a" and "b", and store the results in "dst" using writemask "k" (elements are copied from "src" when the corresponding mask bit is not set).
Operation
DEFINE INTERLEAVE_DWORDS(src1[127:0], src2[127:0]) {
dst[31:0] := src1[31:0]
dst[63:32] := src2[31:0]
dst[95:64] := src1[63:32]
dst[127:96] := src2[63:32]
RETURN dst[127:0]
}
tmp_dst[127:0] := INTERLEAVE_DWORDS(a[127:0], b[127:0])
FOR j := 0 to 3
i := j*32
IF k[j]
dst[i+31:i] := tmp_dst[i+31:i]
ELSE
dst[i+31:i] := src[i+31:i]
FI
ENDFOR
dst[MAX:128] := 0