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GlobalLinSysDirect.cpp
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2 //
3 // File GlobalLinSys.cpp
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9 // Copyright (c) 2006 Division of Applied Mathematics, Brown University (USA),
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31 //
32 // Description: GlobalLinSys definition
33 //
34 ///////////////////////////////////////////////////////////////////////////////
35 
37 
38 namespace Nektar
39 {
40  namespace MultiRegions
41  {
42  /**
43  * @class GlobalLinSysDirect
44  *
45  * Solves a linear system using direct methods.
46  */
47 
48 
49 // GlobalLinSysDirect::GlobalLinSysDirect(void)
50 // {
51 // }
52 
53  /// Constructor for full direct matrix solve.
55  const GlobalLinSysKey &pKey,
56  const boost::weak_ptr<ExpList> &pExp,
57  const boost::shared_ptr<AssemblyMap>
58  &pLocToGloMap)
59  : GlobalLinSys(pKey, pExp, pLocToGloMap)
60  {
61  }
62 
64  {
65  }
66 
67  /// Solve the linear system for given input and output vectors.
69  const int pNumRows,
70  const Array<OneD,const NekDouble> &pInput,
71  Array<OneD, NekDouble> &pOutput,
72  const AssemblyMapSharedPtr &pLocToGloMap,
73  const int pNumDir)
74  {
75  const int nHomDofs = pNumRows - pNumDir;
76 
77  DNekVec Vin (nHomDofs, pInput + pNumDir);
78 
79  Array<OneD, NekDouble> tmp = pOutput + pNumDir;
80  DNekVec Vout(nHomDofs, tmp, eWrapper);
81 
82  m_linSys->Solve(Vin, Vout);
83  }
84  }
85 }
boost::shared_ptr< AssemblyMap > AssemblyMapSharedPtr
Definition: AssemblyMap.h:53
DNekLinSysSharedPtr m_linSys
Basic linear system object.
virtual void v_SolveLinearSystem(const int pNumRows, const Array< OneD, const NekDouble > &pInput, Array< OneD, NekDouble > &pOutput, const AssemblyMapSharedPtr &locToGloMap, const int pNumDir)
Solve the linear system for given input and output vectors.
GlobalLinSysDirect(const GlobalLinSysKey &pKey, const boost::weak_ptr< ExpList > &pExp, const boost::shared_ptr< AssemblyMap > &pLocToGloMap)
Constructor for full direct matrix solve.
Describe a linear system.
A global linear system.
Definition: GlobalLinSys.h:74