Epetra_LinearProblem.h

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//               Epetra: Linear Algebra Services Package
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#ifndef EPETRA_LINEARPROBLEM_H
#define EPETRA_LINEARPROBLEM_H

#include "Epetra_RowMatrix.h"
#include "Epetra_Operator.h"
#ifndef DOXYGEN_SHOULD_SKIP_THIS
enum ProblemDifficultyLevel {easy, moderate, hard, unsure};
#endif


class EPETRA_LIB_DLL_EXPORT Epetra_LinearProblem {

  public:


  Epetra_LinearProblem(void);


  Epetra_LinearProblem(Epetra_RowMatrix * A, Epetra_MultiVector * X,
       Epetra_MultiVector * B);


  Epetra_LinearProblem(Epetra_Operator * A, Epetra_MultiVector * X,
                       Epetra_MultiVector * B);

  Epetra_LinearProblem(const Epetra_LinearProblem& Problem);


  virtual ~Epetra_LinearProblem(void);




  int CheckInput() const;



  void AssertSymmetric(){OperatorSymmetric_ = true;};
#ifdef DOXYGEN_SHOULD_SKIP_THIS
  enum ProblemDifficultyLevel {easy, moderate, hard, unsure};
#endif

  void SetPDL(ProblemDifficultyLevel PDL) {PDL_ = PDL;};


  void SetOperator(Epetra_RowMatrix * A)
    { A_ = A; Operator_ = A; }


  void SetOperator(Epetra_Operator * A)
    { A_ = dynamic_cast<Epetra_RowMatrix *>(A); Operator_ = A; }


  void SetLHS(Epetra_MultiVector * X) {X_ = X;}


  void SetRHS(Epetra_MultiVector * B) {B_ = B;}



  int LeftScale(const Epetra_Vector & D);


  int RightScale(const Epetra_Vector & D);


  Epetra_Operator * GetOperator() const {return(Operator_);};
  Epetra_RowMatrix * GetMatrix() const {return(A_);};
  Epetra_MultiVector * GetLHS() const {return(X_);};
  Epetra_MultiVector * GetRHS() const {return(B_);};
  ProblemDifficultyLevel GetPDL() const {return(PDL_);};
  bool IsOperatorSymmetric() const {return(OperatorSymmetric_);};

 private:

  Epetra_Operator * Operator_;
  Epetra_RowMatrix * A_;
  Epetra_MultiVector * X_;
  Epetra_MultiVector * B_;

  bool OperatorSymmetric_;
  ProblemDifficultyLevel PDL_;
  bool LeftScaled_;
  bool RightScaled_;
  Epetra_Vector * LeftScaleVector_;
  Epetra_Vector * RightScaleVector_;
  Epetra_LinearProblem & operator=(const Epetra_LinearProblem& Problem);
};

#endif /* EPETRA_LINEARPROBLEM_H */