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Teko_StaticLSCStrategy.hpp
00001 /*
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00006 //      Teko: A package for block and physics based preconditioning
00007 //                  Copyright 2010 Sandia Corporation 
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00045 */
00046 
00047 #ifndef __Teko_StaticLSCStrategy_hpp__
00048 #define __Teko_StaticLSCStrategy_hpp__
00049 
00050 #include "Teko_LSCStrategy.hpp"
00051 
00052 namespace Teko {
00053 namespace NS {
00054 
00055 class LSCPrecondState; // forward declaration
00056 
00057 // constant, not very flexible strategy for driving LSCPreconditioenrFactory
00058 class StaticLSCStrategy : public LSCStrategy {
00059 public:
00060 
00061    // Staiblized constructor
00062    StaticLSCStrategy(const LinearOp & invF,
00063                      const LinearOp & invBQBtmC,
00064                      const LinearOp & invD,
00065                      const LinearOp & invMass);
00066  
00067    // Stable constructor
00068    StaticLSCStrategy(const LinearOp & invF,
00069                      const LinearOp & invBQBtmC,
00070                      const LinearOp & invMass);
00071 
00079    virtual void buildState(BlockedLinearOp & A,BlockPreconditionerState & state) const {}
00080 
00089    virtual LinearOp getInvF(const BlockedLinearOp & A,BlockPreconditionerState & state) const
00090    { return invF_; }
00091 
00100    virtual LinearOp getInvBQBt(const BlockedLinearOp & A,BlockPreconditionerState & state) const
00101    { return invBQBtmC_; }
00102 
00111    virtual LinearOp getInvBHBt(const BlockedLinearOp & A,BlockPreconditionerState & state) const
00112    { return invBQBtmC_; }
00113 
00122    virtual LinearOp getOuterStabilization(const BlockedLinearOp & A,BlockPreconditionerState & state) const
00123    { return invD_; }
00124 
00125    virtual LinearOp getInnerStabilization(const BlockedLinearOp & A,BlockPreconditionerState & state) const
00126    { return Teuchos::null; }
00127 
00136    virtual LinearOp getInvMass(const BlockedLinearOp & A,BlockPreconditionerState & state) const
00137    { return invMass_; }
00138 
00147    virtual LinearOp getHScaling(const BlockedLinearOp & A,BlockPreconditionerState & state) const
00148    { return invMass_; }
00149 
00156    virtual bool useFullLDU() const { return false; }
00157 
00163    virtual void setSymmetric(bool isSymmetric) { }
00164 
00165 protected:
00166    // protected memebers
00167    LinearOp invF_;
00168    LinearOp invBQBtmC_;
00169    LinearOp invD_;
00170    LinearOp invMass_;
00171 };
00172 
00173 } // end namespace NS
00174 } // end namespace Teko
00175 
00176 #endif
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