Visible to Intel only — GUID: GUID-A4C2C93B-C306-49F5-B537-F3AD2349F0B7
Visible to Intel only — GUID: GUID-A4C2C93B-C306-49F5-B537-F3AD2349F0B7
Floating Point Dot Product Intrinsics
These Intel® Streaming SIMD Extensions (Intel® SSE4) intrinsics enable floating point single-precision and double-precision dot products. 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 |
Operation |
Corresponding |
---|---|---|
_mm_dp_pd |
Double-precision dot product |
DPPD |
_mm_dp_ps |
Single-precision dot product |
DPPS |
_mm_dp_pd
__m128d _mm_dp_pd( __m128d a, __m128d b, const int mask);
Calculates the dot product of double-precision packed values with mask-defined summing and zeroing of the parts of the result.
_mm_dp_ps
__m128 _mm_dp_ps( __m128 a, __m128 b, const int mask);
Calculates the dot product of single-precision packed values with mask-defined summing and zeroing of the parts of the result.