The prototypes for MMX™ technology intrinsics are in the mmintrin.h header file.
For detailed information about an intrinsic, click on the name of the intrinsic in the following table.
| Intrinsic Name | Operation | Corresponding MMX Instruction |
|---|---|---|
| _mm_add_pi8 | Addition | PADDB |
| _mm_add_pi16 | Addition | PADDW |
| _mm_add_pi32 | Addition | PADDD |
| _mm_adds_pi8 | Addition | PADDSB |
| _mm_adds_pi16 | Addition | PADDSW |
| _mm_adds_pu8 | Addition | PADDUSB |
| _mm_adds_pu16 | Addition | PADDUSW |
| _mm_sub_pi8 | Subtraction | PSUBB |
| _mm_sub_pi16 | Subtraction | PSUBW |
| _mm_sub_pi32 | Subtraction | PSUBD |
| _mm_subs_pi8 | Subtraction | PSUBSB |
| _mm_subs_pi16 | Subtraction | PSUBSW |
| _mm_subs_pu8 | Subtraction | PSUBUSB |
| _mm_subs_pu16 | Subtraction | PSUBUSW |
| _mm_madd_pi16 | Multiply and add | PMADDWD |
| _mm_mulhi_pi16 | Multiplication | PMULHW |
| _mm_mullo_pi16 | Multiplication | PMULLW |
__m64 _mm_add_pi8(__m64 m1, __m64 m2)
Add the eight 8-bit values in m1 to the eight 8-bit values in m2.
__m64 _mm_add_pi16(__m64 m1, __m64 m2)
Add the four 16-bit values in m1 to the four 16-bit values in m2.
__m64 _mm_add_pi32(__m64 m1, __m64 m2)
Add the two 32-bit values in m1 to the two 32-bit values in m2.
__m64 _mm_adds_pi8(__m64 m1, __m64 m2)
Add the eight signed 8-bit values in m1 to the eight signed 8-bit values in m2 using saturating arithmetic.
__m64 _mm_adds_pi16(__m64 m1, __m64 m2)
Add the four signed 16-bit values in m1 to the four signed 16-bit values in m2 using saturating arithmetic.
__m64 _mm_adds_pu8(__m64 m1, __m64 m2)
Add the eight unsigned 8-bit values in m1 to the eight unsigned 8-bit values in m2 and using saturating arithmetic.
__m64 _mm_adds_pu16(__m64 m1, __m64 m2)
Add the four unsigned 16-bit values in m1 to the four unsigned 16-bit values in m2 using saturating arithmetic.
__m64 _mm_sub_pi8(__m64 m1, __m64 m2)
Subtract the eight 8-bit values in m2 from the eight 8-bit values in m1.
__m64 _mm_sub_pi16(__m64 m1, __m64 m2)
Subtract the four 16-bit values in m2 from the four 16-bit values in m1.
__m64 _mm_sub_pi32(__m64 m1, __m64 m2)
Subtract the two 32-bit values in m2 from the two 32-bit values in m1.
__m64 _mm_subs_pi8(__m64 m1, __m64 m2)
Subtract the eight signed 8-bit values in m2 from the eight signed 8-bit values in m1 using saturating arithmetic.
__m64 _mm_subs_pi16(__m64 m1, __m64 m2)
Subtract the four signed 16-bit values in m2 from the four signed 16-bit values in m1 using saturating arithmetic.
__m64 _mm_subs_pu8(__m64 m1, __m64 m2)
Subtract the eight unsigned 8-bit values in m2 from the eight unsigned 8-bit values in m1 using saturating arithmetic.
__m64 _mm_subs_pu16(__m64 m1, __m64 m2)
Subtract the four unsigned 16-bit values in m2 from the four unsigned 16-bit values in m1 using saturating arithmetic.
__m64 _mm_madd_pi16(__m64 m1, __m64 m2)
Multiply four 16-bit values in m1 by four 16-bit values in m2 producing four 32-bit intermediate results, which are then summed by pairs to produce two 32-bit results.
__m64 _mm_mulhi_pi16(__m64 m1, __m64 m2)
Multiply four signed 16-bit values in m1 by four signed 16-bit values in m2 and produce the high 16 bits of the four results.
__m64 _mm_mullo_pi16(__m64 m1, __m64 m2)
Multiply four 16-bit values in m1 by four 16-bit values in m2 and produce the low 16 bits of the four results.