DWORD Multiply Intrinsics

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 instrinsics are in the smmintrin.h file.

Intrinsic Syntax	Operation	Corresponding Intel® SSE4 Instruction
__m128i _mm_mul_epi32( __m128i a, __m128i b)	Packed integer 32-bit multiplication of 2 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