Provides the Bessel functions J,Y,I and K of integer order and for real arguments. Also handles the beta function, the incomplete beta function, associated Legendre polynomials, and spherical harmonics.
Provides an environment for non-linear chi-square and/or least-square fitting and it gives access to the goodness-of-fit, to the covariance matrix and to confidence limits. The fit functions can be archived and maintained in a catalog and the results can be plotted in several ways. Does not auto-attach, so you must manually do a :0:768 ATTACH.
Provides routines for non-linear chi-square fitting, which are based on the Levenberg-Marquardt algorithm. Does not auto-attach, so you must manually do a :0:768 ATTACH. This old version is kept because of its reduced memory requirements.