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PreconditionerLinearWithLowEnergy.h
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1 ///////////////////////////////////////////////////////////////////////////////
2 //
3 // File Preconditioner.h
4 //
5 // For more information, please see: http://www.nektar.info
6 //
7 // The MIT License
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9 // Copyright (c) 2006 Division of Applied Mathematics, Brown University (USA),
10 // Department of Aeronautics, Imperial College London (UK), and Scientific
11 // Computing and Imaging Institute, University of Utah (USA).
12 //
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31 //
32 // Description: Preconditioner header
33 //
34 ///////////////////////////////////////////////////////////////////////////////
35 #ifndef NEKTAR_LIB_MULTIREGIONS_PRECONDITIONERLINEARWITHLOWENERGY_H
36 #define NEKTAR_LIB_MULTIREGIONS_PRECONDITIONERLINEARWITHLOWENERGY_H
41 
42 namespace Nektar
43 {
44  namespace MultiRegions
45  {
47  typedef boost::shared_ptr<PreconditionerLinearWithLowEnergy> PreconditionerLinearWithLowEnergySharedPtr;
48 
50  {
51  public:
52  /// Creates an instance of this class
54  const boost::shared_ptr<GlobalLinSys> &plinsys,
55  const boost::shared_ptr<AssemblyMap>
56  &pLocToGloMap)
57  {
59  p->InitObject();
60  return p;
61  }
62 
63  /// Name of class
64  static std::string className;
65 
67  const boost::shared_ptr<GlobalLinSys> &plinsys,
68  const AssemblyMapSharedPtr &pLocToGloMap);
69 
72 
73  protected:
74  //const boost::weak_ptr<GlobalLinSys> m_linsys;
75 
78 
79  private:
80 
81  virtual void v_InitObject();
82 
83  virtual void v_DoTransformToLowEnergy(
84  Array<OneD, NekDouble>& pInOut,
85  int offset);
86 
87  virtual void v_DoTransformFromLowEnergy(
88  Array<OneD, NekDouble>& pInput);
89 
90  virtual DNekScalMatSharedPtr
91  v_TransformedSchurCompl(int offset, const boost::shared_ptr<DNekScalMat > &loc_mat);
92 
93  virtual void v_DoPreconditioner(
94  const Array<OneD, NekDouble>& pInput,
95  Array<OneD, NekDouble>& pOutput);
96 
97  virtual void v_BuildPreconditioner();
98 
99  };
100  }
101 }
102 
103 #endif