Ifpack_Euclid.h

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

#include "Ifpack_ConfigDefs.h"
#ifdef HAVE_EUCLID

#include "Ifpack_Condest.h"
#include "Ifpack_ScalingType.h"
#include "Epetra_CompObject.h"
#include "Epetra_MultiVector.h"
#include "Epetra_Vector.h"
#include "Epetra_CrsGraph.h"
#include "Epetra_CrsMatrix.h"
#include "Epetra_BlockMap.h"
#include "Epetra_Map.h"
#include "Epetra_Object.h"
#include "Epetra_Comm.h"
#include "Epetra_CrsMatrix.h"
#include "Epetra_Time.h"
#include "Teuchos_RefCountPtr.hpp"
#include "Teuchos_ParameterList.hpp"
#include "Epetra_MpiComm.h"

#include "Mem_dh.h"
#include "io_dh.h"
#include "TimeLog_dh.h"
#include "Parser_dh.h"
#include "Euclid_dh.h"

namespace Teuchos {
  class ParameterList;
}


  //The other files that were modified for Trilinos are getRow.c, call_epetra.{cpp,h}.

class Ifpack_Euclid: public Epetra_Object, public Epetra_CompObject, public virtual Epetra_Operator {
      
  friend ostream& operator << (ostream& os, const Ifpack_Euclid& A);

public:
  // @{ Constructors and destructors.
  Ifpack_Euclid(Epetra_CrsMatrix* A);
  
  ~Ifpack_Euclid(){ Destroy();}

  // @}
  // @{ Construction methods
  
  int Initialize();
  
  bool IsInitialized() const{ return(IsInitialized_);}


  int Compute();

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



  int SetParameters(Teuchos::ParameterList& parameterlist);


  int SetParameter(string name, int Value);


  int SetParameter(string name, double Value);

  int SetUseTranspose(bool UseTranspose_in) {UseTranspose_ = UseTranspose_in; return(0);};
  // @}

  // @{ Mathematical functions.
  // Applies the matrix to X, returns the result in Y.
  int Apply(const Epetra_MultiVector& X, 
           Epetra_MultiVector& Y) const{ return(Multiply(false,X,Y));}


  int Multiply(bool Trans, const Epetra_MultiVector& X, Epetra_MultiVector& Y) const{ return A_->Multiply(Trans, X, Y); }


  int ApplyInverse(const Epetra_MultiVector& X, Epetra_MultiVector& Y) const;

  double Condest(const Ifpack_CondestType CT = Ifpack_Cheap,  const int MaxIters = 1550,
                 const double Tol = 1e-9, Epetra_RowMatrix* Matrix_in = 0);

  double Condest() const{ return(Condest_);}

  // @}
  // @{ Query methods
  
  const char* Label() const {return(Label_);}

  void SetLabel(const char* Label_in){ strcpy(Label_,Label_in);}
  
  const Epetra_Map &OperatorDomainMap() const{return A_->DomainMap();}

  const Epetra_Map &OperatorRangeMap() const{return A_->RangeMap();}

  double NormInf() const {return(0.0);};

  bool HasNormInf() const {return(false);};

  bool UseTranspose() const {return(UseTranspose_);};

  const Epetra_Comm & Comm() const{return(A_->Comm());};

  const Epetra_CrsMatrix& Matrix() const{ return(*A_);}

  virtual int NumInitialize() const{ return(NumInitialize_);}

  virtual int NumCompute() const{ return(NumCompute_);}

  virtual int NumApplyInverse() const{ return(NumApplyInverse_);}

  virtual double InitializeTime() const{ return(InitializeTime_);}

  virtual double ComputeTime() const{ return(ComputeTime_);}

  virtual double ApplyInverseTime() const{ return(ApplyInverseTime_);}

  virtual double InitializeFlops() const{ return(0.0);}

  virtual double ComputeFlops() const{ return(ComputeFlops_);}

  virtual double ApplyInverseFlops() const{ return(ApplyInverseFlops_);}

private:

  // @}
  // @{ Private methods

  Ifpack_Euclid(const Ifpack_Euclid& RHS) : Time_(RHS.Comm()){}

  Ifpack_Euclid& operator=(const Ifpack_Euclid& RHS){ return(*this);}

  void Destroy();

  MPI_Comm GetMpiComm() const{ return (dynamic_cast<const Epetra_MpiComm*>(&A_->Comm()))->GetMpiComm();}

  int CallEuclid(double *x, double *y) const;


  int Solve(bool Trans, const Epetra_MultiVector& X, Epetra_MultiVector& Y) const;

  int NumGlobalRows() const {return(A_->NumGlobalRows());};
  
  int NumGlobalCols() const {return(A_->NumGlobalCols());};
  
  int NumMyRows() const {return(A_->NumMyRows());};
  
  int NumMyCols() const {return(A_->NumMyCols());};
  
  // @}
  // @{ Internal data
  
  Teuchos::RefCountPtr<Epetra_CrsMatrix> A_;
  Teuchos::ParameterList List_;
  bool UseTranspose_;
  double Condest_;
  bool IsInitialized_;
  bool IsComputed_;
  char Label_[160];
  int NumInitialize_;
  int NumCompute_;
  mutable int NumApplyInverse_;
  double InitializeTime_;
  double ComputeTime_;
  mutable double ApplyInverseTime_;
  double ComputeFlops_;
  mutable double ApplyInverseFlops_;
  mutable Epetra_Time Time_;
  Euclid_dh eu;
  int SetLevel_;
  int SetBJ_;
  int SetStats_;
  int SetMem_;
  double SetSparse_;
  int SetRowScale_;
  double SetILUT_;
};

ostream& operator << (ostream& os, const Ifpack_Euclid& A);

#endif // HAVE_EUCLID
#endif /* IFPACK_EUCLID_H */