## Square Root mathMethods

One small (but slow) method of calculating SQRT(N):

```Number = N ; Number to take square root of
SQRT = 0
K=1

Do While Number > 0
Number = Number - K
SQRT = SQRT + 1
K = K + 2
End Do
```

Another fairly simple (but much faster) method of calculating sqrt(n): is the Newton method:

```        s(i+1) = { s(i)*s(i) + p }/{ 2*s(i) }
```
or in more detail
```Number = N ; input value
;-- we want to finish with s^2 approximately equal to N.
Do While (...?...)
s = ( s*s + N ) / ( 2 * s ) ; the average of "s" and "N/s".
End Do
```

The Newton method requires a 8-bit into 16-bit division algorithm.

For more theory see

If you want tested implementations for a particular processor, see:

 file: /Techref/method/math/sqrt.htm, 2KB, , updated: 2011/3/15 16:47, local time: 2018/9/24 17:22, TOP NEW HELP FIND:  54.92.190.11:LOG IN

 ©2018 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions?Please DO link to this page! Digg it! / MAKE! /  Square Roots

After you find an appropriate page, you are invited to your to this massmind site! (posts will be visible only to you before review) Just type in the box and press the Post button. (HTML welcomed, but not the <A tag: Instead, use the link box to link to another page. A tutorial is available Members can login to post directly, become page editors, and be credited for their posts.

Link? Put it here:
if you want a response, please enter your email address:
Attn spammers: All posts are reviewed before being made visible to anyone other than the poster.
 Did you find what you needed? "No. I'm looking for: " "No. Take me to the search page." "No. Take me to the top so I can drill down by catagory" "No. I'm willing to pay for help, please refer me to a qualified consultant" "No. But I'm interested. me at when this page is expanded."

 PICList 2018 contributors: o List host: MIT, Site host massmind.org, Top posters @20180924 RussellMc, Van Horn, David, Sean Breheny, David C Brown, Bob Blick, Isaac M. Bavaresco, Neil, Denny Esterline, Harold Hallikainen, John Gardner, * Page Editors: James Newton, David Cary, and YOU! * Roman Black of Black Robotics donates from sales of Linistep stepper controller kits. * Ashley Roll of Digital Nemesis donates from sales of RCL-1 RS232 to TTL converters. * Monthly Subscribers: Gregg Rew. on-going support is MOST appreciated! * Contributors: Richard Seriani, Sr.

.