This tar file contains the Ferret external function "lanczos".  The four
files in this tar are:
 Makefile            The makefile used to compile and install the function
 lanczos.F90         The actual code for the function
 EF_Util_90.cmn      Ferret include file common blocks converted to F90 format
 EF_mem_subsc_90.cmn Another converted Ferret include file

The two EF... files should be placed in the user's ef_utility/ferret_cmn 
directory along with the standard F77 versions that come with Ferret.  The
remaining two files should go in a directory where the user has personal
Ferret external functions.  For example, I have a directory called
/y/ivor/ferr_extfcns that contains the necessary include files and heirarchy
assumed by the Ferret makefile.  Under this I placed a lanczos directory
for the lanczos program and makefile.  See the Ferret manual for more 
details about making external functions if needed.

As a side note, external functions are a new feature for Ferret in v5.0beta
and are not yet supported on some architectures such as SGI's.  This code
has only been tested on a DEC Alpha.

Any question can be directed to me, Bill Gustafson, at ivor@ucdavis.edu.

3-nov-1999
