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Conference papers

Comparison between binary64 and decimal64 floating-point numbers

Abstract : We introduce an algorithm that allows one to quickly compare a binary64 floating-point (FP) number and a decimal64 FP number, assuming the "binary encoding" of the decimal formats specified by the IEEE 754-2008 standard for FP arithmetic is used. It is a two-step algorithm: a first pass, based on the exponents only, makes it possible to quickly eliminate most cases, then when the first pass does not suffice, a more accurate second pass is required. We provide an implementation of several variants of our algorithm, and compare them.
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Contributor : Marc Mezzarobba Connect in order to contact the contributor
Submitted on : Monday, February 11, 2013 - 1:31:03 PM
Last modification on : Monday, May 16, 2022 - 4:58:02 PM
Long-term archiving on: : Saturday, April 1, 2017 - 10:00:11 PM


  • HAL Id : ensl-00737881, version 3


Nicolas Brisebarre, Marc Mezzarobba, Jean-Michel Muller, Christoph Lauter. Comparison between binary64 and decimal64 floating-point numbers. 21st IEEE Symposium on Computer Arithmetic, Apr 2013, Austin, TX, United States. pp.8. ⟨ensl-00737881v3⟩



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