sql sqrt floor

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 /*
  * Written by Wilco Dijkstra, 1996. The following email exchange establishes the
  * license.
  *
  * From: Wilco Dijkstra &lt;Wilco.Dijkstra@ntlworld.com&gt;
  * Date: Fri, Jun 24, 2011 at 3:20 AM
  * Subject: Re: sqrt routine
  * To: Kevin Ma &lt;kma@google.com&gt;
  * Hi Kevin,
  * Thanks for asking. Those routines are public domain (originally posted to
  * comp.sys.arm a long time ago), so you can use them freely for any purpose.
  * Cheers,
  * Wilco
  *
  * ----- Original Message -----
  * From: &quot;Kevin Ma&quot; &lt;kma@google.com&gt;
  * To: &lt;Wilco.Dijkstra@ntlworld.com&gt;
  * Sent: Thursday, June 23, 2011 11:44 PM
  * Subject: Fwd: sqrt routine
  * Hi Wilco,
  * I saw your sqrt routine from several web sites, including
  * http://www.finesse.demon.co.uk/steven/sqrt.html.
  * Just wonder if there&#x27;s any copyright information with your Successive
  * approximation routines, or if I can freely use it for any purpose.
  * Thanks.
  * Kevin
  * /