You can download here a small program to do nonlinear fits (polynomial, exponential, logarithmic, power, sinusoidal regressions).
Source (gzipped tar file, Unix)
Zipped executable (Windows)
I wrote it several years ago without having previously studied any serious mathematical regression theory, so it really doesn't work very well. Hopefully someone will find it useful.
Copyright Yann OLLIVIER 1996-1999
This software may be freely distributed as is, including this whole notice.
It may be modified, but any modification should include this whole notice as is and a description of the changes made.
This software may not be sold.
This software or any modified version of it may be freely used in free programs. The program should include a copy of this whole notice. If you want to use it in a program you sell, contact me
This software comes with absolutely no warranty.