Flutterby™! : Floating Point & Quadratics

Next unread comment / Catchup all unread comments User Account Info | Logout | XML/Pilot/etc versions | Long version (with comments) | Weblog archives | Site Map | | Browse Topics

Floating Point & Quadratics

2024-06-13 23:50:11.700826+02 by Dan Lyke 0 comments

RT Robin Green @fatlimey@mastodon.gamedev.place

Fascinating paper on solving quadratics using floating point.

You may have heard the textbook equation has problems in floating point when b^2-4ac suffers cancellation, you may know the "citardauq" method (quadratic backwards), you may know how to use copysign(b), but the analysis doesn't stop there culminating with formal proofs by Boldo that only arrived in 2009.

Watch in horror are your favorite scientific libs stumble and fall, some even at the first hurdle.

https://cnrs.hal.science/hal-04116310/document

[ related topics: Children and growing up Movies Boats Birds ]

comments in ascending chronological order (reverse):

Comment policy

We will not edit your comments. However, we may delete your comments, or cause them to be hidden behind another link, if we feel they detract from the conversation. Commercial plugs are fine, if they are relevant to the conversation, and if you don't try to pretend to be a consumer. Annoying endorsements will be deleted if you're lucky, if you're not a whole bunch of people smarter and more articulate than you will ridicule you, and we will leave such ridicule in place.

Flutterby™ is a trademark claimed by

Dan Lyke
for the web publications at www.flutterby.com and www.flutterby.net.