DocumentCode
2532478
Title
Approximation of elementary functions using a weighted sum of bit-products
Author
Johansson, Kenny ; Gustafsson, Oscar ; Wanhammar, Lars
Author_Institution
Dept. of Electr. Eng., Linkoping Univ.
fYear
2006
fDate
21-24 May 2006
Lastpage
798
Abstract
In this work a novel approach for approximating elementary functions is presented. By rewriting the function as a sum of weighted bit-products an efficient implementation is obtained. For most functions a majority of the bit-products can be neglected and still obtain good accuracy. The method is suitable for high-speed implementation of fixed-point functions
Keywords
fixed point arithmetic; function approximation; polynomial approximation; elementary functions approximation; fixed-point function; weighted bit-product sum; Application software; Application specific integrated circuits; Convergence; Field programmable gate arrays; Frequency conversion; Hardware; Logic; Signal processing; Software algorithms; Table lookup;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on
Conference_Location
Island of Kos
Print_ISBN
0-7803-9389-9
Type
conf
DOI
10.1109/ISCAS.2006.1692705
Filename
1692705
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