FEApp_ExponentialSourceFunction.hpp

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00001 // $Id$ 
00002 // $Source$ 
00003 // @HEADER
00004 // ***********************************************************************
00005 // 
00006 //                           Sacado Package
00007 //                 Copyright (2006) Sandia Corporation
00008 // 
00009 // Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
00010 // the U.S. Government retains certain rights in this software.
00011 // 
00012 // This library is free software; you can redistribute it and/or modify
00013 // it under the terms of the GNU Lesser General Public License as
00014 // published by the Free Software Foundation; either version 2.1 of the
00015 // License, or (at your option) any later version.
00016 //  
00017 // This library is distributed in the hope that it will be useful, but
00018 // WITHOUT ANY WARRANTY; without even the implied warranty of
00019 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00020 // Lesser General Public License for more details.
00021 //  
00022 // You should have received a copy of the GNU Lesser General Public
00023 // License along with this library; if not, write to the Free Software
00024 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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00026 // Questions? Contact David M. Gay (dmgay@sandia.gov) or Eric T. Phipps
00027 // (etphipp@sandia.gov).
00028 // 
00029 // ***********************************************************************
00030 // @HEADER
00031 
00032 #ifndef FEAPP_EXPONENTIALSOURCEFUNCTION_HPP
00033 #define FEAPP_EXPONENTIALSOURCEFUNCTION_HPP
00034 
00035 #include "FEApp_AbstractSourceFunction.hpp"
00036 
00037 #include "Teuchos_RCP.hpp"
00038 #include "Sacado_ScalarParameterLibrary.hpp"
00039 #include "Sacado_ParameterRegistration.hpp"
00040 #include "Sacado_Traits.hpp"
00041 
00042 
00043 namespace FEApp {
00044 
00048   template <typename EvalT>
00049   class ExponentialSourceFunction : 
00050     public FEApp::AbstractSourceFunction<EvalT>,
00051     public Sacado::ParameterAccessor<EvalT, FEApp::EvaluationTraits> {
00052   public:
00053 
00055     typedef typename FEApp::AbstractSourceFunction<EvalT>::ScalarT ScalarT;
00056   
00058     ExponentialSourceFunction(
00059          const ScalarT& factor,
00060          const Teuchos::RCP<ParamLib>& paramLib) : 
00061       alpha(factor) 
00062     {
00063       // Add nonlinear factor to parameter library
00064       std::string name = "Exponential Source Function Nonlinear Factor";
00065       new Sacado::ParameterRegistration<EvalT, FEApp::EvaluationTraits>(name, this, paramLib);
00066     };
00067 
00068     // !Destructor
00069     virtual ~ExponentialSourceFunction() {};
00070 
00072     virtual void
00073     evaluate(const std::vector<ScalarT>& solution,
00074              std::vector<ScalarT>& value) const {
00075       for (unsigned int i=0; i<solution.size(); i++) {
00076         value[i] = alpha*std::exp(solution[i]);
00077       }
00078     };
00079 
00081     ScalarT& getValue(const std::string &n) {
00082       // For multiple parameters in the same file, can distinguish by string
00083       // if (n == "Exponential Source Function Nonlinear Factor") 
00084       return alpha;
00085     };
00086 
00087   private:
00088 
00090     ExponentialSourceFunction(const ExponentialSourceFunction&);
00091 
00093     ExponentialSourceFunction& operator=(const ExponentialSourceFunction&);
00094 
00095   protected:
00096   
00098     ScalarT alpha;
00099 
00100   };
00101 }
00102 
00103 #endif // FEAPP_CUBICSOURCEFUNCTION_HPP

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