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The file CLAD2 documents CLAS3 in the style of the other SVDPACK files
and is derived from the LAD2 documentation file.  This software 
computes the SVD of a sparse COMPLEX HERMITIAN matrix.

Please review this file before using the "clas3.f" Fortran 77 program.
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Here are the other files/directories included in this tar file:

clas3.f    (contains main program and all subroutines)
CLAI1      (input parameter file required by CLAS3)
CLAI7      (sample 627 by 627 complex sparse matrix for CLAS3)
CLAD2      (CLAS3 documentation file; derived from LAD2 in SVDPACK)
CLAO2      (sample ASCII output of one run of CLAS3)
CLAO3      (sample binary output file comparable to LAO3 for LAS2)
makefile   (typing "make" should create the "clas3.x" executable
README     (this file)

Users are strongly urged to review the LAS2 documentation on computing
the SVD of the matrix A using the Lanczos algorithm on A'A, where '
denotes matrix transposition.  This software, in turn, solves eigensystems
of the form A^HA, where ^H denotes the hermitian transpose of a complex
(sparse) matrix A.  LAS2 and CLAS3 are both Fortran 77 programs contained
in the SVDPACK software collection.

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M.W. Berry and M. Liang
Dept. of Computer Science
University of Tennessee, Knoxville
Knoxville, TN 37996-1301

Email Contact: berry@cs.utk.edu
Date of Release: 8-03-99
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