Ifpack_RCMReordering.h

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

#include "Ifpack_ConfigDefs.h"
#include "Ifpack_Reordering.h"

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


class Ifpack_RCMReordering : public Ifpack_Reordering {

public:

  Ifpack_RCMReordering();

  Ifpack_RCMReordering(const Ifpack_RCMReordering& RHS);

  Ifpack_RCMReordering& operator=(const Ifpack_RCMReordering& RHS);

  virtual ~Ifpack_RCMReordering() {};
  
  virtual int SetParameter(const string Name, const int Value);

  virtual int SetParameter(const string Name, const double Value);
  
  virtual int SetParameters(Teuchos::ParameterList& List);

  virtual int Compute(const Ifpack_Graph& Graph);

  virtual int Compute(const Epetra_RowMatrix& Matrix);

  virtual bool IsComputed() const
  {
    return(IsComputed_);
  }

  virtual int Reorder(const int i) const;

  virtual int InvReorder(const int i) const;

  virtual int P(const Epetra_MultiVector& Xorig,
        Epetra_MultiVector& Xreord) const;

  virtual int Pinv(const Epetra_MultiVector& Xorig,
           Epetra_MultiVector& Xinvreord) const;

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

  virtual int NumMyRows() const 
  {
    return(NumMyRows_);
  }

  virtual int RootNode() const 
  {
    return(RootNode_);
  }

private:
  int RootNode_;
  int NumMyRows_;
  bool IsComputed_;
  std::vector<int> Reorder_;
  std::vector<int> InvReorder_;
}; 

#endif