Developer Guide and Reference

Contents

General Support Intrinsics (MMX™ technology)

This topic summarizes the MMX™ technology general support intrinsics.
To use these intrinsics, include the
immintrin.h
file as follows:
#include <immintrin.h>
Intrinsic Name
Operation
Corresponding
MMX™ Instruction
_mm_empty
Empty
MM
state
EMMS
_mm_cvtsi32_si64
Convert from
int
MOVD
_mm_cvtsi64_si32
Convert to
int
MOVD
_mm_cvtsi64_m64
Convert from __
int64
MOVQ
_mm_cvtm64_si64
Convert to __
int64
MOVQ
_mm_packs_pi16
Pack
PACKSSWB