ON HARDWARE FOR COMPUTING EXPONENTIAL AND TRIGONOMETRIC FUNCTIONS

Authors
KANTABUTRA V
Citation
V. Kantabutra, ON HARDWARE FOR COMPUTING EXPONENTIAL AND TRIGONOMETRIC FUNCTIONS, I.E.E.E. transactions on computers, 45(3), 1996, pp. 328-339
Citations number
32
Categorie Soggetti
Computer Sciences","Engineering, Eletrical & Electronic","Computer Science Hardware & Architecture
Journal title
I.E.E.E. transactions on computers → ACNP
ISSN journal
00189340
Volume
45
Issue
3
Year of publication
1996
Pages
328 - 339
Database
ISI
SICI code
0018-9340(1996)45:3<328:OHFCEA>2.0.ZU;2-W
Abstract
This paper presents new, fast hardware for computing the exponential f unction, sine, and cosine. The main new idea is to use low-precision a rithmetic components to approximate high precision computations, and t hen to correct very quickly the approximation error periodically so th at the effect is to get high precision computation at near low-precisi on speed. The algorithm used in the paper is a nontrivial modification of the well-known CORDIC algorithm, and might be applicable to the co mputation of other functions than the ones presented.