Source: https://doc.qt.io/qt-6.11/qtwebengine-3rdparty-spl-sqrt-floor.html
/* * Written by Wilco Dijkstra, 1996. The following email exchange establishes the * license. * * From: Wilco Dijkstra <Wilco.Dijkstra@ntlworld.com> * Date: Fri, Jun 24, 2011 at 3:20 AM * Subject: Re: sqrt routine * To: Kevin Ma <kma@google.com> * 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: "Kevin Ma" <kma@google.com> * To: <Wilco.Dijkstra@ntlworld.com> * 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's any copyright information with your Successive * approximation routines, or if I can freely use it for any purpose. * Thanks. * Kevin * /
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