They are at
http://www.piclist.com/faq
under Routines, Math, Basic Math, Square root.

Please let me know if anything is missing from that page.

---
James Newton mailto:jamesnewton@geocities.com 1-619-652-0593
http://techref.massmind.org NEW! FINALLY A REAL NAME!
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-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Scott Dattalo
Sent: Tuesday, March 07, 2000 19:51
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: RMS Measurement again


On Tue, 7 Mar 2000, Sean Breheny wrote:

> Also, integer square root routines are very east to write. Two common
algos
> are Newton's method applied to the equation x^2-y=0 to solve for x given
y,
> and the CORDIC square root method. Both should be only about 100 lines or
> so in PIC assembly.

Those may be easy to write, but they're slow. This one was hard to write
but it's fast:

http://www.dattalo.com/technical/software/pic/picsqrt.html

(There are actually two there). Andy David has versions for taking the
square of numbers bigger than 16-bits, but I don't have those readily
available.

Scott