Title :
(M, p, k)-Friendly Points: A Table-Based Method for Trigonometric Function Evaluation
Author :
Nicolas Brisebarre;Milo D. Ercegovac;Jean-Michel Muller
Author_Institution :
Lab. LIP, Ecole Normale Super. de Lyon, Lyon, France
fDate :
7/1/2012 12:00:00 AM
Abstract :
We present a new way of approximating the sine and cosine functions by a few table look-ups and additions. It consists in first reducing the input range to a very small interval by using rotations with "(M, p, k) friendly angles", proposed in this work, and then by using a bipartite table method ina small interval. An implementation of the method for 24-bit case is described and compared with CORDIC. Roughly, the proposed scheme offers a speedup of 2 compared with an unfolded double-rotation radix-2 CORDIC.
Keywords :
"Approximation methods","Electronic mail","Adders","Table lookup","Accuracy","Indexes","Conferences"
Conference_Titel :
Application-Specific Systems, Architectures and Processors (ASAP), 2012 IEEE 23rd International Conference on
Print_ISBN :
978-1-4673-2243-0
Electronic_ISBN :
2160-052X
DOI :
10.1109/ASAP.2012.17
