Intel® C++ Compiler Classic Developer Guide and Reference

ID 767249
Date 12/16/2022
Public

A newer version of this document is available. Customers should click here to go to the newest version.

Document Table of Contents

Intrinsics for MMX™ Technology

MMX™ technology is an extension to the Intel® architecture instruction set. The MMX™ instruction set adds 57 opcodes and a 64-bit quadword data type, and eight 64-bit registers. Each of the eight registers can be directly addressed using the register names MM0 to MM7.

The prototypes for MMX™ technology intrinsics are in the mmintrin.h header file.

To use these intrinsics, include the immintrin.h file as follows:

#include <immintrin.h>