Better understanding numerical accuracy

Understanding how numerical accuracy impacts calculations is hard. Floating-point arithmetic is non intuitive and not easy to analyze. To help students, professors or any programmer understand more about numerical accuracy Numalis provides on this page a free, online, accuracy toolkit in the form of a small analyzer.

This analyzer allows you to write programs and discover their numerical accuracy. For a presentation on how to use this toolkit please watch the video below, and for a full documentation please read the documentation page first.
Do not hesitate to use the examples provided in the toolkit. If you have any question, please contact us through

To use the demonstrator, you need to create an account on our website Accordingly with the RGPD you have a right to know, correct and remove all the information provided. To learn more about the automatic treatment of data we perform please refer to the this page.

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