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Function Approximation based on Estimated Arithmetic Operators

Arnaud Tisserand 1
1 CAIRN - Energy Efficient Computing ArchItectures with Embedded Reconfigurable Resources
Inria Rennes – Bretagne Atlantique , IRISA-D3 - ARCHITECTURE
Abstract : This article reports preliminary results on hardware operators for function evaluation with moderate average accuracy. The obtained operators provide a small average error on the input domain but a few large errors may occur for some very infrequent arguments. The proposed approximation method combines two methods: i) approximation using low-degree polynomials with small and sparse coefficients; ii) operators for addition based on estimated arithmetic and integer power operators (x^2, x^3) with reduced accuracy. Typical delay reduction is about 20-50% and 15-30% for silicon area reduction compared to previous results.
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Contributor : Arnaud Tisserand <>
Submitted on : Tuesday, January 12, 2010 - 6:34:59 PM
Last modification on : Tuesday, December 8, 2020 - 9:55:58 AM


  • HAL Id : inria-00446527, version 1


Arnaud Tisserand. Function Approximation based on Estimated Arithmetic Operators. 43th Asilomar Conference on Signals, Systems and Computers, Oct 2009, Pacific Grove, California, United States. ⟨inria-00446527⟩



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