README
1*======================================================================
2*
3* DISCLAIMER
4*
5* This material was prepared as an account of work sponsored by an
6* agency of the United States Government. Neither the United States
7* Government nor the United States Department of Energy, nor Battelle,
8* nor any of their employees, MAKES ANY WARRANTY, EXPRESS OR IMPLIED, OR
9* ASSUMES ANY LEGAL LIABILITY OR RESPONSIBILITY FOR THE ACCURACY,
10* COMPLETENESS, OR USEFULNESS OF ANY INFORMATION, APPARATUS, PRODUCT,
11* SOFTWARE, OR PROCESS DISCLOSED, OR REPRESENTS THAT ITS USE WOULD NOT
12* INFRINGE PRIVATELY OWNED RIGHTS.
13*
14* ACKNOWLEDGMENT
15*
16* This software and its documentation were produced with Government
17* support under Contract Number DE-AC06-76RLO-1830 awarded by the United
18* States Department of Energy. The Government retains a paid-up
19* non-exclusive, irrevocable worldwide license to reproduce, prepare
20* derivative works, perform publicly and display publicly by or for the
21* Government, including the right to distribute to other Government
22* contractors.
23*
24*======================================================================
25*
26* -- PEIGS routine (version 2.1) --
27* Pacific Northwest Laboratory
28* July 28, 1995
29*
30*======================================================================
31
32
33README file for PeIGS.
34
35The package, PeIGS, is a collection of linear algebra programs for
36solving the general and standard symmetric eigensystem problem. It is
37being developed at Department of Energy's Pacific Northwest National Laboratory
38operated by Battelle Memorial Institute and is in the Public Domain. The
39authors are David Elwood, George Fann, and Richard Littlefield.
40
41There is a separate test directory "test_la" which performs a suite of
42tests comparing the accuracy of this code with serial versions of
43LAPACK and LINPACK. This test suite also contains test codes for
44random distribution of data.
45
46For installation instructions please read the file "INSTALL."
47
48The source code are contained in the directory "src/#" where #
49is the programming language.
50
51This is the top level directory for the general eigensystem solver Ax
52= \lambda B x for a symmetric matrix A and a symmetric positive
53definite matrix B.
54
55The documentation is contained in ./doc/peigs.texi. This is a file
56which can be converted to a dvi file using texi2dvi, a GNU product.
57It is also readable as on-line documentation using emacs using the
58texi mode.
59
60This is a very brief summary of what is contained in src/c The user is
61advised to look at peigs.texi before installation.
62