Netlib
Netlib is a numerical software library with approximately 50
megabytes of code. The routines, mostly in Fortran, are generally
of high quality (many were developed at U.S. national labs or by
professional numerical analysts). The popularity of Netlib is
attested by the number of times it has been contacted -- at last
count, nearly 23 million times.
Packages include Linpack, Eispack, and their successor, Lapack
(including a pre-release version in C), fftpack, the Harwell
sparse matrix routines, Hompack, Lanczos, and Minpack. There are
many other more specialized libraries. There is also code from
various texts (but not Numerical Recipes), and code from the ACM
Transactions on Mathematical Software (more than 500 different
routines here alone). There are also many directories organized
not by package, but by subject (each entry is code by different
authors). Finally, there are various tools for Fortran and C
users.
In all, there are nearly 150 directories covering nearly every
imaginable area in numerical computation. Any user of numerical
methods would be well advised to be familiar with it.
Netlib is available via e-mail, ftp, and the web. Introductory
material on Netlib can be found in the first entries of the web, and
ftp interfaces. For an e-mail introduction, write "send index" in
the body of a message addressed to one of the sites listed below,
and in return you will receive general directions.
You can search the contents of Netlib via e-mail (the method is
explained in the e-mail directions) and via the web interface. The
latter is more flexible, but you must carefully read the
directions.
Mail Site: netlib@ornl.gov http://www.netlib.org/
