Oberon > Software > Misc

CORDIC algorithms

[ Description | Installation | Version log ]

Description

Current Version: CORDIC.Mod - 16 Jan, 2000

The CORDIC (= COordinate Rotation DIgital Computer) algorithm was developped by Jack E. Volder in 1959. Subsequently, the CORDIC scheme was extended by J. Walther in 1971 to other transcendental functions.

Details in: How Do Calculators Calculate? and The CORDIC Algorithm for Computing a Sine.

A pretty straightforward port to Oberon of the original C code published in Dr. Dobb's Journal, Issue ddj9010. The ddj version can be obtained using FTP from SIMTEL and other places.

The functions can be useful for real-time applications, as they do not use hardware floating-point support, and they deliver their results to a user-specified precision, in a guaranteed time-bound manner.

Requires: ETH Oberon Native.

Maintainer: Michael A. McGaw


Installation and usage

1. Download the module CORDIC.Mod and compile it.

2. Use Watson to obtain a list of available functions.


Version log

8.01.2001 First released
16.01.2001 Second release

16 Jan 2001 - Copyright © 2000 ETH Zürich. All rights reserved.
E-Mail: oberon@inf.ethz.ch
Homepage: http://www.ethoberon.ethz.ch/