FILTLAN is a software library written in C/C++ for computing extreme
or interior eigenvalues of a symmetric matrix by a polynomial filtered
Lanczos procedure. The code for extreme eigenvalues by a standard
Lanczos procedure without restarting is also included. In both cases,
partial reorthogonalization is provided to improve efficiency.
The code was primarily written by Haw-ren Fang - a post-doctoral associate
in Yousef Saad's group. The technical reports listed below provide
details on the techniques used in the package. Online documentation
will be available soon.
The Filtered Lanczos Package
