Epetra_VbrRowMatrix.h

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

#include "Epetra_BasicRowMatrix.h"
#include "Epetra_VbrMatrix.h"
#include "Epetra_Map.h"
#include "Epetra_Comm.h"
#include "Epetra_Vector.h"
#include "Epetra_MultiVector.h"


class Epetra_VbrRowMatrix: public Epetra_BasicRowMatrix {

 public:


  /* The constructor for this class requires a pointer to a fully constructed instance of an Epetra_VbrMatrix
     object.
     \param Matrix (In) Pointer to an existing Epetra_VbrMatrix. The input matrix must be retained by the user
     throughout the existance of the dependent Epetra_VbrRowmatrix object.
     \pre Matrix must have Matrix->Filled()==true.
  */
  Epetra_VbrRowMatrix(Epetra_VbrMatrix * Matrix): Epetra_BasicRowMatrix(Matrix->Comm()), matrix_(Matrix) {
  if (Matrix==0) throw Matrix->RowMatrixRowMap().ReportError("Input matrix must have called FillComplete()", -1);
  SetMaps(Matrix->RowMatrixRowMap(), Matrix->RowMatrixColMap(), Matrix->OperatorDomainMap(), Matrix->OperatorRangeMap());
  if (!Matrix->Filled()) throw Matrix->RowMatrixRowMap().ReportError("Input matrix must have called FillComplete()", -1);
  SetLabel("Epetra::VbrRowMatrix");
}

    virtual ~Epetra_VbrRowMatrix(){}


  /* Updates the matrix that the Epetra_VbrRowMatrix will use to satisfy the Epetra_RowMatrix functionality.
     \param Matrix (In) A pointer to an existing, fully constructed Epetra_VbrMatrix.
     \pre Matrix must have Matrix->Filled()==true.
  */
  int UpdateMatrix(Epetra_VbrMatrix * Matrix){
    if (Matrix ==0) {
      EPETRA_CHK_ERR(-1);
    }
    else matrix_ = Matrix;
    return(0);
  }




  int ExtractMyRowCopy(int MyRow, int Length, int & NumEntries, double *Values, int * Indices) const {

    EPETRA_CHK_ERR(matrix_->ExtractMyRowCopy(MyRow, Length, NumEntries, Values, Indices));
    return(0);
  }


    int ExtractMyEntryView(int CurEntry, double * &Value, int & RowIndex, int & ColIndex) {
      return(-1);
    }


    int ExtractMyEntryView(int CurEntry, double const * & Value, int & RowIndex, int & ColIndex) const {
      return(-1);
    }


    int NumMyRowEntries(int MyRow, int & NumEntries) const {
      EPETRA_CHK_ERR(matrix_->NumMyRowEntries(MyRow, NumEntries));
      return(0);
    }





    int RightScale(const Epetra_Vector& x){
      HaveNumericConstants_ = false;
      UpdateFlops(NumGlobalNonzeros());
      EPETRA_CHK_ERR(matrix_->RightScale(x));
      return(0);
    }


    int LeftScale(const Epetra_Vector& x){
      HaveNumericConstants_ = false;
      UpdateFlops(NumGlobalNonzeros());
      EPETRA_CHK_ERR(matrix_->LeftScale(x));
      return(0);
    }


    int Multiply(bool TransA, const Epetra_MultiVector& X, Epetra_MultiVector& Y) const{
      EPETRA_CHK_ERR(matrix_->Multiply(TransA, X, Y));
      return(0);
    }


    int Solve(bool Upper, bool Trans, bool UnitDiagonal,
              const Epetra_MultiVector& X,
              Epetra_MultiVector& Y) const {
      EPETRA_CHK_ERR(matrix_->Solve(Upper, Trans, UnitDiagonal, X, Y));
      return(0);
    }  //@}



 private:

    Epetra_VbrMatrix * matrix_;

};
#endif /* EPETRA_VBRROWMATRIX_H */