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// ************************************************************************
//
// ShyLU: Hybrid preconditioner package
// Copyright 2012 Sandia Corporation
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
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// Questions? Contact Michael A. Heroux (maherou@sandia.gov)
//
// ************************************************************************
//@HEADER
#ifndef SHYLU_SYMBOLIC_H
#define SHYLU_SYMBOLIC_H
#include "Epetra_CrsMatrix.h"
#include "Epetra_Map.h"
#include "Epetra_MultiVector.h"
#include "Epetra_LinearProblem.h"
#include "Isorropia_EpetraProber.hpp"
//#include "EpetraExt_Transpose_RowMatrix.h"
#include <EpetraExt_Reindex_LinearProblem2.h>
#include "Ifpack_Preconditioner.h"
// This is NOT just the symbolic structure, needs a better name
typedef struct
{
Teuchos::RCP<Epetra_CrsMatrix> D; // D Matrix
//Teuchos::RCP<Epetra_CrsMatrix> DT; // D Transpose Matrix
//Teuchos::RCP<EpetraExt::RowMatrix_Transpose> transposer;
Teuchos::RCP<Epetra_CrsMatrix> C; // Column separator
Teuchos::RCP<Epetra_CrsMatrix> R; // Row separator
Teuchos::RCP<Epetra_CrsMatrix> G; // G Matrix (A22 block)
Teuchos::RCP<Epetra_LinearProblem> LP; // Local problem to solve D
Teuchos::RCP<Epetra_LinearProblem> OrigLP; // Local problem to solve D
Teuchos::RCP<EpetraExt::ViewTransform<Epetra_LinearProblem> > ReIdx_LP ;
Teuchos::RCP<Epetra_MultiVector> Dlhs;
Teuchos::RCP<Epetra_MultiVector> Drhs;
Teuchos::RCP<Epetra_MultiVector> Gvec;
Teuchos::RCP<Amesos_BaseSolver> Solver; // Local solver for D
Teuchos::RCP<Ifpack_Preconditioner> ifSolver; //Local incomplete preconditioner
Teuchos::RCP<Epetra_CrsGraph> Sg; // The approximate graph of S
// Graph(S) + few diagonals
Teuchos::RCP<Isorropia::Epetra::Prober> prober; // Prober for Sbar
} shylu_symbolic;
#endif // SHYLU_SYMBOLIC_H
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