A cool page is Paul Hsiehs' webpage. There you will find some good discussion on the trick used. http://www.azillionmonkeys.com/qed/asmexample.html http://www.a

A cool page is Paul Hsiehs' webpage. There you will find some good discussion on the trick used. http://www.azillionmonkeys.com/qed/asmexample.html http://www.azillionmonkeys.com/qed/asmexample.html Look for part 5: "A fast implementation of strlen()".