Developer Guide and Reference

  • 2021.2
  • 04/07/2021
  • Public Content
  • Download as PDF

Clear MMX™ State Operator

Empty the MMX™ registers and clear the MMX state. Read the guidelines for using the EMMS instruction intrinsic.
void empty(void);
Corresponding intrinsic:

Product and Performance Information


Performance varies by use, configuration and other factors. Learn more at