CreateTridi.h

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// 
//                Amesos: Direct Sparse Solver Package
//                 Copyright (2004) Sandia Corporation
// 
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
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// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
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// This library is distributed in the hope that it will be useful, but
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//
//  CreateTridi populates an empty EpetraCrsMatrix with a tridiagonal with 
//  -1 on the off-diagonals and 2 on the diagonal.  
//
//  CreateTridiPlus creates the same matrix as CreateTridi except that it adds
//  -1 in the two off diagonal corners.
//
//  This code was plaguerized from epetra/example/petra_power_method/cxx_main.cpp
//  presumably written by Mike Heroux.
//
//  Adapted by Ken Stanley - Aug 2003 
//
#include "Epetra_CrsMatrix.h"

int CreateTridi(Epetra_CrsMatrix& A) ;

int CreateTridiPlus(Epetra_CrsMatrix& A) ;