Packed Blending Intrinsics

These Intel® Streaming SIMD Extensions 4 (Intel® SSE4) intrinsics pack multiple operations in a single instruction. Blending conditionally copies one field in the source onto the corresponding field in the destination. The prototypes for these intrinsics are in the smmintrin.h file.

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

#include <immintrin.h>

Intrinsic Syntax

Operation

Corresponding
Intel® SSE4 Instruction

__m128 _mm_blend_ps(__m128 v1, __m128 v2, const int mask)

Selects single precision float data from two sources using constant mask

BLENDPS

__m128d _mm_blend_pd(__m128d v1, __m128d v2, const int mask)

Selects double precision float data from two sources using constant mask

BLENDPD

__m128 _mm_blendv_ps(__m128 v1, __m128 v2, __m128 v3)

Selects single precision float data from two sources using variable mask

BLENDVPS

__m128d _mm_blendv_pd(__m128d v1, __m128d v2, __m128d v3)

Selects double precision float data from two sources using variable mask

BLENDVPD

__m128i _mm_blendv_epi8(__m128i v1, __m128i v2, __m128i mask)

Selects integer bytes from two sources using variable mask

PBLENDVB

__m128i _mm_blend_epi16(__m128i v1, __m128i v2, const int mask)

Selects integer words from two sources using constant mask

PBLENDW

Para obtener información más completa sobre las optimizaciones del compilador, consulte nuestro Aviso de optimización.