Intrinsics for FP Pack and Unpack Operations

The prototypes for Intel® Advanced Vector Extensions 512 (Intel® AVX-512) intrinsics are located in the zmmintrin.h header file.

To use these intrinsics, include the immintrin.h file as follows:

#include <immintrin.h>


Intrinsic Name

Operation

Corresponding
Intel® AVX-512 Instruction

_mm512_unpackhi_pd, _mm512_mask_unpackhi_pd, _mm512_maskz_unpackhi_pd

Unpacks and interleaves high packed float64 values.

VPUNPCKHPD

_mm512_unpackhi_ps, _mm512_mask_unpackhi_ps, _mm512_maskz_unpackhi_ps

Unpacks and interleaves high packed float32 values.

VPUNPCKHPS

_mm512_unpacklo_pd, _mm512_mask_unpacklo_pd, _mm512_maskz_unpacklo_pd

Unpacks and interleaves low packed float64 values.

VPUNPCKLPD

_mm512_unpacklo_ps, _mm512_mask_unpacklo_ps, _mm512_maskz_unpacklo_ps

Unpacks and interleaves low packed float32 values.

VPUNPCKLPS


variable definition
k

writemask used as a selector

a

first source vector element

b

second source vector element

src

source element to use based on writemask result


_mm512_unpackhi_pd

extern __m512d __cdecl _mm512_unpackhi_pd(__m512d a, __m512d b);

Unpacks and interleaves float64 elements from the high half of each 128-bit lane in a and b, and stores the result.



_mm512_mask_unpackhi_pd

extern __m512d __cdecl _mm512_mask_unpackhi_pd(__m512d src, __mmask8 k, __m512d a, __m512d b);

Unpacks and interleaves float64 elements from the high half of each 128-bit lane in a and b, and stores the result using writemask k (elements are copied from src when the corresponding mask bit is not set).



_mm512_maskz_unpackhi_pd

extern __m512d __cdecl _mm512_maskz_unpackhi_pd(__mmask8 k, __m512d a, __m512d b);

Unpacks and interleaves float64 elements from the high half of each 128-bit lane in a and b, and stores the result using zeromask k (elements are zeroed out when the corresponding mask bit is not set).



_mm512_unpackhi_ps

extern __m512 __cdecl _mm512_unpackhi_ps(__m512 a, __m512 b);

Unpacks and interleaves float32 elements from the high half of each 128-bit lane in a and b, and stores the result.



_mm512_mask_unpackhi_ps

extern __m512 __cdecl _mm512_mask_unpackhi_ps(__m512 src, __mmask16 k, __m512 a, __m512 b);

Unpacks and interleaves float32 elements from the high half of each 128-bit lane in a and b, and stores the result using writemask k (elements are copied from src when the corresponding mask bit is not set).



_mm512_maskz_unpackhi_ps

extern __m512 __cdecl _mm512_maskz_unpackhi_ps(__mmask16 k, __m512 a, __m512 b);

Unpacks and interleaves float32 elements from the high half of each 128-bit lane in a and b, and stores the result using zeromask k (elements are zeroed out when the corresponding mask bit is not set).



_mm512_unpacklo_pd

extern __m512d __cdecl _mm512_unpacklo_pd(__m512d a, __m512d b);

Unpacks and interleaves float64 elements from the low half of each 128-bit lane in a and b, and stores the result.



_mm512_mask_unpacklo_pd

extern __m512d __cdecl _mm512_mask_unpacklo_pd(__m512d src, __mmask8 k, __m512d a, __m512d b);

Unpacks and interleaves float64 elements from the low half of each 128-bit lane in a and b, and stores the result using writemask k (elements are copied from src when the corresponding mask bit is not set).



_mm512_maskz_unpacklo_pd

extern __m512d __cdecl _mm512_maskz_unpacklo_pd(__mmask8 k, __m512d a, __m512d b);

Unpacks and interleaves float64 elements from the low half of each 128-bit lane in a and b, and stores the result using zeromask k (elements are zeroed out when the corresponding mask bit is not set).



_mm512_unpacklo_ps

extern __m512 __cdecl _mm512_unpacklo_ps(__m512 a, __m512 b);

Unpacks and interleaves float32 elements from the low half of each 128-bit lane in a and b, and stores the result.



_mm512_mask_unpacklo_ps

extern __m512 __cdecl _mm512_mask_unpacklo_ps(__m512 src, __mmask16 k, __m512 a, __m512 b);

Unpacks and interleaves float32 elements from the low half of each 128-bit lane in a and b, and stores the result using writemask k (elements are copied from src when the corresponding mask bit is not set).



_mm512_maskz_unpacklo_ps

extern __m512 __cdecl _mm512_maskz_unpacklo_ps(__mmask16 k, __m512 a, __m512 b);

Unpacks and interleaves float32 elements from the low half of each 128-bit lane in a and b, and stores the result using zeromask k (elements are zeroed out when the corresponding mask bit is not set).



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