SKYPACK Copyright (c) 2007, The Regents of the University of California,
through Lawrence Berkeley National Laboratory (subject to receipt of any
required approvals from the U.S. Dept. of Energy). All rights reserved.

If you have questions about your rights to use or distribute this 
software, please contact Berkeley Lab's Technology Transfer Department 
at TTD@lbl.gov.

NOTICE. This software was developed under partial funding from the U.S. 
Department of Energy.  As such, the U.S. Government has been granted 
for itself and others acting on its behalf a paid-up, nonexclusive, 
irrevocable, worldwide license in the Software to reproduce, prepare 
derivative works, and perform publicly and display publicly. Beginning
five (5) years after the date permission to assert copyright is 
obtained from the U.S. Department of Energy, and subject to any 
subsequent five (5) year renewals, the U.S. Government is granted for
itself and others acting on its behalf a paid-up, nonexclusive, 
irrevocable, worldwide license in the Software to reproduce, prepare 
derivative works, distribute copies to the public, perform publicly 
and display publicly, and to permit others to do so.

## 01/22/2000 ##########################################################
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#  The directory skypack                                               #
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   The current directory is organized as follows:

   README  : this file.
   cleaner : script file to perform cleaning operations.
   creator : script file to generate the library libskypack.a.
   doc     : contains documentation on SKYPACK.
   drv     : contains driver models and simple problems.
   etc     : contains BLAS kernels.
   lib     : reserved for libskypack.a.
   src     : contains the subprograms of SKYPACK.
   sys     : contains system dependencies.


Purpose
-------

   The SKYPACK package corresponds to a set of subprograms written in
   standard Fortran 77 intended for linear algebra operations with 
   real symmetric matrices stored in skyline form.

Conditions of use
-----------------

   SKYPACK has been developed by Osni A. Marques as a research tool for
   the scientific community. It comes with no guarantee that it is free
   of error or suitable for a particular application. Therefore, no
   guarantee is given on the results obtained, whose interpretation
   is left to the user. However, comments or reported problems may 
   be sent to:

          osni@nersc.gov

Creating libskypack.a
---------------------

   The (csh shell) script file `creator' provided in this directory is 
   intended for the generation of the library libskypack.a (which will 
   be placed in the subdirectory lib). The command

          creator -h 

   displays the options and machines currently supported by the script.
   For other platforms, `creator' should be modified accordingly and 
   system dependencies given in the subdirectory sys (see the README 
   file in that subdirectory for details). Moreover, `creator' relies 
   upon the proper definition by the user of paths and options for 
   the Fortran compiler. 

BLAS Kernels
------------

   A set of BLAS (basic linear algebra subroutines) kernels is used by 
   libskypack.a and should be made available when linking the package 
   to a calling program. If no library with such kernels is available, 
   the user can include the needed files (which are available in the 
   subdirectory etc) by specifying the appropriate option for the
   script `creator'.

Releases
--------

   12/95: 
        . double precision version
   05/96:
        . single precision version
        . improved scripts
   09/98:
        . correction in xSCAL argument (subroutine MTRXYS)

end of README ##########################################################
