Reference documentation for deal.II version 9.3.0
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function_derivative.h
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15 
16 #ifndef dealii_function_derivative_h
17 #define dealii_function_derivative_h
18 
19 #include <deal.II/base/config.h>
20 
23 #include <deal.II/base/function.h>
24 
26 
27 
43 template <int dim>
45 {
46 public:
53  const Point<dim> & direction,
54  const double h = 1.e-6);
55 
69  const std::vector<Point<dim>> &direction,
70  const double h = 1.e-6);
71 
80  void
86  void
87  set_h(const double h);
88 
89  virtual double
90  value(const Point<dim> &p, const unsigned int component = 0) const override;
91 
92  virtual void
93  vector_value(const Point<dim> &p, Vector<double> &value) const override;
94 
95  virtual void
96  value_list(const std::vector<Point<dim>> &points,
97  std::vector<double> & values,
98  const unsigned int component = 0) const override;
99 
105  virtual std::size_t
106  memory_consumption() const override;
107 
108 private:
112  const Function<dim> &f;
113 
117  double h;
118 
123 
127  std::vector<Tensor<1, dim>> incr;
128 };
129 
131 
132 #endif
virtual double value(const Point< dim > &p, const unsigned int component=0) const override
SymmetricTensor< 2, dim, Number > e(const Tensor< 2, dim, Number > &F)
virtual void value_list(const std::vector< Point< dim >> &points, std::vector< double > &values, const unsigned int component=0) const override
void set_formula(typename AutoDerivativeFunction< dim >::DifferenceFormula formula=AutoDerivativeFunction< dim >::Euler)
virtual void vector_value(const Point< dim > &p, Vector< double > &value) const override
#define DEAL_II_NAMESPACE_CLOSE
Definition: config.h:395
FunctionDerivative(const Function< dim > &f, const Point< dim > &direction, const double h=1.e-6)
const Function< dim > & f
AutoDerivativeFunction< dim >::DifferenceFormula formula
std::vector< Tensor< 1, dim > > incr
#define DEAL_II_NAMESPACE_OPEN
Definition: config.h:394
virtual std::size_t memory_consumption() const override
void set_h(const double h)