Epetra_FastCrsMatrix.h

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#ifndef EPETRA_FASTCRSMATRIX_H
#define EPETRA_FASTCRSMATRIX_H
 
#include "Epetra_Operator.h"
#include "Epetra_CrsMatrix.h"
class Epetra_Vector;
class Epetra_MultiVector;
 
 
class Epetra_FastCrsOperator: public Epetra_CompObject, public virtual Epetra_Operator  {
 
 public:
 
 
  Epetra_FastCrsOperator(const Epetra_CrsMatrix & Matrix, bool UseFloats = false);
 
  virtual ~Epetra_FastCrsOperator();
 
 
  /* Updates the values only using a matrix that has exactly the same structure as
     the matrix used to construct this Epetra_FastCrsOperator object.
  */
  int UpdateValues(const Epetra_CrsMatrix & Matrix);
 
 
 
    char * Label() const {return(CrsMatrix_.Label());};
 
 
  int SetUseTranspose(bool UseTranspose) {return(CrsMatrix_.SetUseTranspose());};
 
  /* Returns the quantity \f$ \| A \|_\infty\f$ such that
     \f[\| A \|_\infty = \max_{1\lei\lem} \sum_{j=1}^n |a_{ij}| \f].
  */
  double NormInf() const {return(CrsMatrix_.NormInf());};
 
  const Epetra_Comm & Comm() const {return(CrsMatrix_.Comm());};
 
 
  int Apply(const Epetra_MultiVector& X, Epetra_MultiVector& Y) const;
 
 
  int ApplyInverse(const Epetra_MultiVector& X, Epetra_MultiVector& Y) const;
 
  bool HasNormInf() const {return(CrsMatrix_.HasNormInf());};
 
  bool UseTranspose() const {return(CrsMatrix_.UseTranspose());};
 
  const Epetra_Map & OperatorDomainMap() const {return(CrsMatrix_.OperatorDomainMap());};
 
  const Epetra_Map & OperatorRangeMap() const {return(CrsMatrix_.OperatorRangeMap());};
 
 
 
 protected:
  int Allocate(bool UseFloats);
  const Epetra_CrsMatrix & CrsMatrix_;
  int NumMyRows_;
  int NumMyNonzeros_;
  double *Values_;
  float * FloatValues_;
  int * Indices_;
  unsigned short * ShortIndices_;
 
  bool UsingFloats_;
  bool UsingShorts_;
  bool ValuesAllocated_;
 
 
  mutable Epetra_MultiVector * ImportVector_;
  mutable Epetra_MultiVector * ExportVector_;
 
};
#endif /* EPETRA_FASTCRSMATRIX_H */