You can find here an easy-to-run example for developing a fitting program adapted to your needs. We present a very simple example of how to fit some pseudo-experimental points to a single Gaussian using several fitting algorithms in various platforms.
We have used some of the most popular fitting algorithms:
We implemented most of them under C, Fortran and the IDL computer languages. We have used the C and Fortran compilers from GNU in both UNIX and PC systems. For details about our PC installation, see the PCTools page. We have also implemented the Numerical Recipes LM algorith in IDL calling either a Fortran or a C function. We have compiled them under the UNIX and PC platforms.
Please note that this examples are "running examples", i.e., their goal is to provide with a working system to develop a fit program adapted to your needs. Therefore, the code may not be clean, nor the programming techniques are optimized. There are only examples.