==================
LAPACK README FILE
==================

[This is a modified version of the README distributed with the netlib
LAPACK distribution.]

LAPACK is a library of Fortran 77 subroutines for solving
the most commonly occurring problems in numerical linear algebra.
It is freely-available software, and is copyrighted.

LAPACK is available on netlib and can be obtained via the World Wide
Web and anonymous ftp.

   http://www.netlib.org/lapack/

CCP4 4.1 contains a subset of the netlib distribution of LAPACK version
3.0. It has the Fortran source for LAPACK (in the directory
$CCP4/lib/lapack/src); it also contains the Fortran77 reference
implementation of the Basic Linear Algebra Subprograms (the Level 1, 2,
and 3 BLAS) needed by LAPACK (in the directory $CCP4/lib/lapack/blas/src).
According to netlib, this code is intended for use only if there is no
other implementation of the BLAS already available on your machine; the
efficiency of LAPACK depends very much on the efficiency of the BLAS. 

The testing programs and timing programs are not included here. The
complete package, which includes test code and timing programs, can be
obtained from netlib (see URL above). 

The Third Edition of the LAPACK Users' Guide published by SIAM in Winter,
1999 gives a detailed description of the philosophy behind LAPACK as well
as an explanation of its usage.

The LAPACK Users' Guide can be purchased from:
SIAM; Customer Service; P.O. Box 7260;  Philadelphia, PA 19104; 
215-382-9800, FAX 215-386-7999. To order by email, send email to
service@siam.org.  The book is also available via SIAM's World Wide Web
URL at http://www.siam.org.  The ISBN number is 0-89871-447-8, and SIAM
order code is SE09.

To view an HTML version of the Users' Guide please refer to the URL

  http://www.netlib.org/lapack/lug/lapack_lug.html.

LAPACK has been thoroughly tested, on many different types of computers. 
The LAPACK project supports the package in the sense that reports of
errors or poor performance will gain immediate attention from the
developers. Such reports, descriptions of interesting applications, and
other comments should be sent by electronic mail to lapack@cs.utk.edu. 
HOWEVER please note that while CCP4 have not altered any of the LAPACK or
BLAS source code, the installation procedure differs in some aspects from
that recommended by netlib. So if you have problems it may be best to
contact ccp4@ccp4.ac.uk first.

A list of known problems, bugs, and compiler errors for LAPACK is
maintained on netlib.
  http://www.netlib.org/lapack/release_notes.html

To contact the LAPACK project directly:
LAPACK Project
c/o J.J. Dongarra
Computer Science Department
University of Tennessee
Knoxville, Tennessee 37996-1301
USA
Email: lapack@cs.utk.edu
