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CreateTridi.h
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00001 // @HEADER
00002 // ***********************************************************************
00003 // 
00004 //                Amesos: Direct Sparse Solver Package
00005 //                 Copyright (2004) Sandia Corporation
00006 // 
00007 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
00008 // license for use of this work by or on behalf of the U.S. Government.
00009 // 
00010 // This library is free software; you can redistribute it and/or modify
00011 // it under the terms of the GNU Lesser General Public License as
00012 // published by the Free Software Foundation; either version 2.1 of the
00013 // License, or (at your option) any later version.
00014 //  
00015 // This library is distributed in the hope that it will be useful, but
00016 // WITHOUT ANY WARRANTY; without even the implied warranty of
00017 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00018 // Lesser General Public License for more details.
00019 //  
00020 // You should have received a copy of the GNU Lesser General Public
00021 // License along with this library; if not, write to the Free Software
00022 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
00023 // USA
00024 // Questions? Contact Michael A. Heroux (maherou@sandia.gov) 
00025 // 
00026 // ***********************************************************************
00027 // @HEADER
00028 
00029 //
00030 //  CreateTridi populates an empty EpetraCrsMatrix with a tridiagonal with 
00031 //  -1 on the off-diagonals and 2 on the diagonal.  
00032 //
00033 //  CreateTridiPlus creates the same matrix as CreateTridi except that it adds
00034 //  -1 in the two off diagonal corners.
00035 //
00036 //  This code was plaguerized from epetra/example/petra_power_method/cxx_main.cpp
00037 //  presumably written by Mike Heroux.
00038 //
00039 //  Adapted by Ken Stanley - Aug 2003 
00040 //
00041 #include "Epetra_CrsMatrix.h"
00042 
00043 int CreateTridi(Epetra_CrsMatrix& A) ;
00044 
00045 int CreateTridiPlus(Epetra_CrsMatrix& A) ;
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