Title :
Arithmetic unit for the computation of interval elementary functions
Author :
Hormigo, Javier ; Villalba, Julio ; Zapata, Emilio L.
Author_Institution :
Dept. of Comput. Archit., Malaga Univ., Spain
Abstract :
Interval arithmetic for elementary functions has been tackled by different researchers from a software point of view. In this paper, we present a hardware solution to efficiently support the computation of some classic elementary functions: sin, sinh, cos, cosh and exp, using an interval as input argument. To perform this, we carry out a modification of the classic CORDIC architecture with a moderate hardware increase. The total computation time for the evaluation of these functions over an argument interval is, in most of the interesting cases, just a few cycle times greater than the computation time of the corresponding point functions
Keywords :
digital arithmetic; classic CORDIC architecture; computation time; corresponding point functions; interval arithmetic; interval elementary functions; moderate hardware increase; Application software; Arithmetic; Computer architecture; Error correction; Hardware; Read only memory; Software tools; Vectors;
Conference_Titel :
EUROMICRO Conference, 1999. Proceedings. 25th
Conference_Location :
Milan
Print_ISBN :
0-7695-0321-7
DOI :
10.1109/EURMIC.1999.794447
