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Ifpack_RCMReordering.h
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42 
43 #ifndef IFPACK_RCMREORDERING_H
44 #define IFPACK_RCMREORDERING_H
45 
46 #include "Ifpack_ConfigDefs.h"
47 #include "Ifpack_Reordering.h"
48 
49 namespace Teuchos {
50  class ParameterList;
51 }
52 class Ifpack_Graph;
53 class Epetra_MultiVector;
54 class Epetra_RowMatrix;
55 
57 
59 
60 public:
61 
64 
67 
70 
72  virtual ~Ifpack_RCMReordering() {};
73 
75  virtual int SetParameter(const std::string Name, const int Value);
76 
78  virtual int SetParameter(const std::string Name, const double Value);
79 
81  virtual int SetParameters(Teuchos::ParameterList& List);
82 
84  virtual int Compute(const Ifpack_Graph& Graph);
85 
87  virtual int Compute(const Epetra_RowMatrix& Matrix);
88 
90  virtual bool IsComputed() const
91  {
92  return(IsComputed_);
93  }
94 
96  virtual int Reorder(const int i) const;
97 
99  virtual int InvReorder(const int i) const;
100 
102  virtual int P(const Epetra_MultiVector& Xorig,
103  Epetra_MultiVector& Xreord) const;
104 
106  virtual int Pinv(const Epetra_MultiVector& Xorig,
107  Epetra_MultiVector& Xinvreord) const;
108 
109 
111  virtual std::ostream& Print(std::ostream& os) const;
112 
114  virtual int NumMyRows() const
115  {
116  return(NumMyRows_);
117  }
118 
120  virtual int RootNode() const
121  {
122  return(RootNode_);
123  }
124 
125 private:
127  int RootNode_;
129  int NumMyRows_;
131  bool IsComputed_;
133  std::vector<int> Reorder_;
135  std::vector<int> InvReorder_;
136 };
137 
138 #endif
virtual bool IsComputed() const
Returns true is the reordering object has been successfully initialized, false otherwise.
virtual int Pinv(const Epetra_MultiVector &Xorig, Epetra_MultiVector &Xinvreord) const
Applies inverse reordering to multivector X, whose local length equals the number of local rows...
virtual int Compute(const Ifpack_Graph &Graph)
Computes all it is necessary to initialize the reordering object.
virtual int NumMyRows() const
Returns the number of local rows.
virtual int InvReorder(const int i) const
Returns the inverse reordered index of row i.
Ifpack_Reordering: basic class for reordering for a Ifpack_Graph object.
virtual int RootNode() const
Returns the root node.
Ifpack_RCMReordering: reverse Cuthill-McKee reordering.
virtual std::ostream & Print(std::ostream &os) const
Prints basic information on iostream. This function is used by operator&lt;&lt;.
virtual ~Ifpack_RCMReordering()
Destructor.
Ifpack_Graph: a pure virtual class that defines graphs for IFPACK.
Definition: Ifpack_Graph.h:61
virtual int SetParameters(Teuchos::ParameterList &List)
Sets all parameters.
virtual int Reorder(const int i) const
Returns the reordered index of row i.
virtual int SetParameter(const std::string Name, const int Value)
Sets integer parameters `Name&#39;.
Ifpack_RCMReordering & operator=(const Ifpack_RCMReordering &RHS)
Assignment operator.
virtual int P(const Epetra_MultiVector &Xorig, Epetra_MultiVector &Xreord) const
Applies reordering to multivector X, whose local length equals the number of local rows...
Ifpack_RCMReordering()
Constructor for Ifpack_Graph&#39;s.