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Pré-Publication, Document De Travail Année : 2020

Elementary Functions and Approximate Computing

Résumé

We review some of the classical methods used for quickly obtaining low-precision approximations to the elementary functions. Then, for each of the three main classes of elementary function algorithms (shift-and-add algorithms, polynomial or rational approximations, table-based methods, bit-manipulation techniques), we examine what can be done for obtaining very fast estimates of a function, at the cost of a (controlled) loss in terms of accuracy.
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Dates et versions

hal-02517784 , version 1 (24-03-2020)
hal-02517784 , version 2 (29-04-2020)

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  • HAL Id : hal-02517784 , version 1

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Jean-Michel Muller. Elementary Functions and Approximate Computing. 2020. ⟨hal-02517784v1⟩
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