Here are some interesting links:<br>http://www.finesse.demon.co.uk/steven/sqrt.html<br>This is an ARM assembly fast integer square root thingy.

The same page also has C code.<br>This page contains code that I actually used myself once:<br>http://www.azillionmonkeys.com/qed/sqroot.html<br>BTW, I got to this pages using the following search string in google:<br>Integer Square Root Fast ARM<br>This search gives you a lot more matches that might also be of interest.<br>