Intel® C++ Compiler 16.0 User and Reference Guide
These Intel® Streaming SIMD Extensions (Intel® SSE4) DWORD multiply intrinsics are designed to aid vectorization. They enable four simultaneous 32-bit by 32-bit multiplies. The prototypes for these intrinsics are in the smmintrin.h file.
|
Intrinsic Syntax |
Operation |
Corresponding
|
|---|---|---|
|
__m128i _mm_mul_epi32( __m128i a, __m128i b) |
Packed integer 32-bit multiplication of two low pairs of operands producing two 64-bit results |
PMULDQ |
|
__m128i _mm_mullo_epi32( __m128i a, __m128i b) |
Packed integer 32-bit multiplication with truncation of upper halves of results |
PMULLD |