Error propagation and constrained fits are standard tasks in data analysis. An example for error propagation is the transformation from cartesian to polar coordinates, and an example for constrained fits are the application of energy and momentum conservation to particle reactions. The programs ERRPRP and APLCON allow to perform these tasks with a minimum amount of coding in given applications.
There are two source files (see below) one containing the specific subprograms and one containing some general matrix programs. The first file contains two example programs, which may be called in a main program:
The software can be freely used for research and education. We expect that all publications describing work using this software quote at least one reference.
Disclaimer: This software is provided without any expressed or implied warranty. In particular there is no warranty of any kind concerning the fitness of this software for any particular purpose.