| Identifiant de l'article : |
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ensl-00463353, version 2 |
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| Domaine : |
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Informatique/Autre
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| Titre : |
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Implementing decimal floating-point arithmetic through binary: some suggestions |
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| Auteur(s) : |
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Nicolas Brisebarre1, 2, Milos Ercegovac3, Nicolas Louvet1, 2, Erik Martin-Dorel1, 2, Jean-Michel Muller1, 2, Adrien Panhaleux1, 2 |
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| Laboratoire : |
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| 1 : |
Inria Grenoble Rhône-Alpes / LIP Laboratoire de l'Informatique du Parallélisme - ARENAIRE |
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| 2 : |
LIP - Laboratoire de l'Informatique du Parallélisme |
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| 3 : |
Digital Arithmetic and Reconfigurable Architecture Laboratory |
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| Équipe de recherche : |
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[ARENAIRE - Arithmétique des ordinateurs] |
| Résumé : |
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We propose several algorithms and provide some related results that make it possible to implement decimal floating-point arithmetic on a processor that does not have decimal operators, using the available binary floating-point functions. In this preliminary study, we focus on round-to-nearest mode only. We show that several functions in decimal32 and decimal64 arithmetic can be implemented using binary64 and binary128 floating-point arithmetic, respectively. Specifically, we discuss the decimal square root and some transcendental functions. We also consider radix conversion algorithms. |
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Langue du texte
intégral : |
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Anglais |
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| Mots-clés : |
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Floating-point arithmetic – Decimal floating-point arithmetic – Square root – Transcendental functions – Radix conversion. |
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| Classification : |
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ACM B.2.4; G.1.0 |
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