Epetra_SLU.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.
// 
// 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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// You should have received a copy of the GNU Lesser General Public
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#ifndef _EPETRA_SLU_H_
#define _EPETRA_SLU_H_

class Epetra_LinearProblem;
class Epetra_CrsMatrix;
class Epetra_MultiVector;
class Epetra_CrsGraph;

class SLUData;


class Epetra_SLU
{

 public:



  Epetra_SLU( Epetra_LinearProblem * Problem,
              int fill_fac = -1,
              int panel_size = -1,
              int relax = -1 );


  ~Epetra_SLU();



  int Solve( bool Verbose = false,
             bool Equil = true,
             bool Factor = true,
             int perm_type = 2,
             double pivot_thresh = -1,
             bool Refact = true,
             bool Trans = false );

 private:

  void Copy();

  Epetra_CrsMatrix * A_;
  Epetra_MultiVector * X_;
  Epetra_MultiVector * B_;

  double * R_;
  double * C_;

  Epetra_CrsGraph * AG_;

  SLUData * data_;

  int * Indices_;
  double * Values_;

  int * TransNumNZ_;
  int TotNumNZ_;

  int ** TransIndices_;
  double ** TransValues_;

  int * RowIndices_;
  double * RowValues_;
  int * ColPointers_;

  int * perm_r_;
  int * perm_c_;

  int count_;

  int * etree_;

  double * ferr_;
  double * berr_;
};

#endif