DerivativeGridFunction.hpp 1.49 KB
 Praetorius, Simon committed Dec 20, 2017 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 #pragma once #include #include namespace AMDiS { /** * \addtogroup OperatorTerms * @{ **/ /// \brief A Gridfunction that returns the derivative when calling localFunction template class DerivativeGridFunction { using GridFctRange = typename GridFct::Range; using GridFctDomain = typename GridFct::Domain; public: using Range = typename Dune::Functions::DefaultDerivativeTraits::Range; using Domain = GridFctDomain; using LocalFunction = std::decay_t()))>; using EntitySet = typename GridFct::EntitySet; public: explicit DerivativeGridFunction(GridFct const& gridFct) : gridFct_(gridFct) {} Range operator()(Domain const& x) const { error_exit("Not implemented"); return Range(0); } friend LocalFunction localFunction(DerivativeGridFunction const& gf) { msg("DerivativeGridFunction::localFunction()\n"); return derivative(gf.gridFct_); } EntitySet const& entitySet() const { return gridFct_.entitySet(); } private: GridFct gridFct_; }; /// Generator function for \ref DerivativeGridFunction expressions template auto makeDerivativeGridFunction(GridFct&& gridFct) { return DerivativeGridFunction>{std::forward(gridFct)}; } /** @} **/ } // end namespace AMDiS