Ifpack_Reordering.h

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//       Ifpack: Object-Oriented Algebraic Preconditioner Package
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#ifndef IFPACK_REORDERING_H
#define IFPACK_REORDERING_H

#include "Ifpack_ConfigDefs.h"

namespace Teuchos {
  class ParameterList;
}
class Epetra_MultiVector;
class Ifpack_Graph;
class Epetra_RowMatrix;


class Ifpack_Reordering {

public:

  virtual ~Ifpack_Reordering() {};

  virtual int SetParameter(const std::string Name, const int Value) = 0;

  virtual int SetParameter(const std::string Name, const double Value) = 0;

  virtual int SetParameters(Teuchos::ParameterList& List) = 0;

  virtual int Compute(const Ifpack_Graph& Graph) = 0;

  virtual int Compute(const Epetra_RowMatrix& Matrix) = 0;

  virtual bool IsComputed() const = 0;

  virtual int Reorder(const int i) const = 0;

  virtual int InvReorder(const int i) const = 0;

  virtual int P(const Epetra_MultiVector& Xorig,
                Epetra_MultiVector& X) const = 0;

  virtual int Pinv(const Epetra_MultiVector& Xorig,
                   Epetra_MultiVector& X) const = 0;

  virtual std::ostream& Print(std::ostream& os) const = 0;

};

inline std::ostream& operator<<(std::ostream& os, const Ifpack_Reordering& obj)
{
  return(obj.Print(os));
}

#endif