Paper Info
Title
Interval Sine and Cosine Functions Computation Based on Variable-Precision CORDIC Algorithm
Abstract
In this paper we design a CORDIC architecture for variable-precision, and a new algorithmis proposed to per-orm the interval sine and cosine functions. This system allows us to specify the precision to perform the sine and cosine functions, and control the accuracy of the result, in such a way that recomputation of inaccurate results can be carried out with higher precision. An important reduction in the number of iterations is obtained by taking advantage of the differential angle, and the number of cycles per iteration is reduced by avoiding the additions of the leading all zero words. As a consequence, the computation time of the interval function evaluation obtained is close to that of a point function evaluation. The problem of the large table of angles and the scale factor compensation involved in a high precision CORDIC has been solved efficiently.
Year
DOI
Venue
1999
10.1109/ARITH.1999.762844
IEEE Symposium on Computer Arithmetic
Keywords
DocType
ISSN
computation time,interval sine,interval function evaluation,higher precision,important reduction,cosine function,differential angle,cosine functions computation,point function evaluation,high precision,cordic architecture,variable-precision cordic algorithm,computer architecture,arithmetic,reactive power,iterations,accuracy,hardware,polynomials,application software
Conference
1063-6889
ISBN
Citations 
PageRank 
0-7695-0116-8
5
0.50
References 
Authors
20
3
Name
Order
Citations
PageRank
J. Hormigo1181.37
Julio Villalba221923.56
E. L. Zapata339138.94