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Teko_EpetraHelpers.hpp
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46 
47 #ifndef __Teko_EpetraHelpers_hpp__
48 #define __Teko_EpetraHelpers_hpp__
49 
50 // stl includes
51 #include <string>
52 
53 // Epetra includes
54 #include "Epetra_Operator.h"
55 #include "Epetra_CrsMatrix.h"
56 #include "Epetra_MultiVector.h"
57 
58 // Teuchos includes
59 #include "Teuchos_RCP.hpp"
60 
61 // Thyra includes
62 #include "Thyra_VectorBase.hpp"
63 #include "Thyra_DefaultSpmdMultiVector.hpp"
64 
65 namespace Teko {
66 
67 namespace Epetra {
68 
78 void fillDefaultSpmdMultiVector(Teuchos::RCP<Thyra::DefaultSpmdMultiVector<double> > & spmdMV,
79  Teuchos::RCP<Epetra_MultiVector> & epetraMV);
80 
91 const Teuchos::RCP<const Thyra::LinearOpBase<double> > thyraDiagOp(const Teuchos::RCP<const Epetra_Vector> & ev,
92  const Epetra_Map & map,const std::string & lbl="ANYM");
93 
104 const Teuchos::RCP<Thyra::LinearOpBase<double> > thyraDiagOp(const Teuchos::RCP<Epetra_Vector> & ev,
105  const Epetra_Map & map,const std::string & lbl="ANYM");
106 
116 void identityRowIndices(const Epetra_Map & rowMap, const Epetra_CrsMatrix & mat,std::vector<int> & outIndices);
117 
128 void zeroMultiVectorRowIndices(Epetra_MultiVector & mv,const std::vector<int> & zeroIndices);
129 
133 class ZeroedOperator : public Epetra_Operator {
134 public:
144  ZeroedOperator(const std::vector<int> & zeroIndices,const Teuchos::RCP<const Epetra_Operator> & op);
145 
147 
148 
150  virtual ~ZeroedOperator() {}
151 
153  int SetUseTranspose(bool /* useTranspose */ ) { return -1;}
154 
156  int Apply(const Epetra_MultiVector& X, Epetra_MultiVector& Y) const;
157 
159  int ApplyInverse(const Epetra_MultiVector& /* X */, Epetra_MultiVector& /* Y */) const
160  { return -1; }
161 
163  double NormInf() const { return -1.0; }
164 
166  const char* Label() const
167  {return ("zeroed( "+std::string(epetraOp_->Label())+" )").c_str(); }
168 
170  bool UseTranspose() const {return false;}
171 
173  bool HasNormInf() const {return false;}
174 
176  const Epetra_Comm & Comm() const {return epetraOp_->Comm(); }
177 
179  const Epetra_Map& OperatorDomainMap() const {return epetraOp_->OperatorDomainMap(); }
180 
182  const Epetra_Map& OperatorRangeMap() const {return epetraOp_->OperatorRangeMap(); }
183 
185 
186 protected:
187  std::vector<int> zeroIndices_;
188  const Teuchos::RCP<const Epetra_Operator> epetraOp_;
189 };
190 
191 } // end namespace Epetra
192 } // end namespace Teko
193 
194 #endif
int SetUseTranspose(bool)
Can&#39;t transpose a ZeroedOperator.
int ApplyInverse(const Epetra_MultiVector &, Epetra_MultiVector &) const
Can&#39;t call ApplyInverse on a zeroed operator.
ZeroedOperator(const std::vector< int > &zeroIndices, const Teuchos::RCP< const Epetra_Operator > &op)
Constructor for a ZeroedOperator.
int Apply(const Epetra_MultiVector &X, Epetra_MultiVector &Y) const
Perform a matrix-vector product with certain rows zeroed out.
virtual ~ZeroedOperator()
Do nothing destructor.