Reference documentation for deal.II version 8.5.1
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#include <deal.II/base/function_lib.h>
Public Member Functions | |
virtual double | value (const Point< dim > &p, const unsigned int component=0) const |
virtual void | value_list (const std::vector< Point< dim > > &points, std::vector< double > &values, const unsigned int component=0) const |
virtual void | vector_value_list (const std::vector< Point< dim > > &points, std::vector< Vector< double > > &values) const |
virtual Tensor< 1, dim > | gradient (const Point< dim > &p, const unsigned int component=0) const |
virtual double | laplacian (const Point< dim > &p, const unsigned int component=0) const |
virtual void | laplacian_list (const std::vector< Point< dim > > &points, std::vector< double > &values, const unsigned int component=0) const |
Public Member Functions inherited from Function< dim > | |
Function (const unsigned int n_components=1, const double initial_time=0.0) | |
virtual | ~Function ()=0 |
Function & | operator= (const Function &f) |
virtual void | vector_value (const Point< dim > &p, Vector< double > &values) const |
virtual void | vector_values (const std::vector< Point< dim > > &points, std::vector< std::vector< double > > &values) const |
virtual void | vector_gradient (const Point< dim > &p, std::vector< Tensor< 1, dim, double > > &gradients) const |
virtual void | gradient_list (const std::vector< Point< dim > > &points, std::vector< Tensor< 1, dim, double > > &gradients, const unsigned int component=0) const |
virtual void | vector_gradients (const std::vector< Point< dim > > &points, std::vector< std::vector< Tensor< 1, dim, double > > > &gradients) const |
virtual void | vector_gradient_list (const std::vector< Point< dim > > &points, std::vector< std::vector< Tensor< 1, dim, double > > > &gradients) const |
virtual void | vector_laplacian (const Point< dim > &p, Vector< double > &values) const |
virtual void | vector_laplacian_list (const std::vector< Point< dim > > &points, std::vector< Vector< double > > &values) const |
virtual SymmetricTensor< 2, dim, double > | hessian (const Point< dim > &p, const unsigned int component=0) const |
virtual void | vector_hessian (const Point< dim > &p, std::vector< SymmetricTensor< 2, dim, double > > &values) const |
virtual void | hessian_list (const std::vector< Point< dim > > &points, std::vector< SymmetricTensor< 2, dim, double > > &values, const unsigned int component=0) const |
virtual void | vector_hessian_list (const std::vector< Point< dim > > &points, std::vector< std::vector< SymmetricTensor< 2, dim, double > > > &values) const |
std::size_t | memory_consumption () const |
Public Member Functions inherited from FunctionTime< Number > | |
FunctionTime (const Number initial_time=Number(0.0)) | |
virtual | ~FunctionTime () |
Number | get_time () const |
virtual void | set_time (const Number new_time) |
virtual void | advance_time (const Number delta_t) |
Public Member Functions inherited from Subscriptor | |
Subscriptor () | |
Subscriptor (const Subscriptor &) | |
Subscriptor (Subscriptor &&) | |
virtual | ~Subscriptor () |
Subscriptor & | operator= (const Subscriptor &) |
Subscriptor & | operator= (Subscriptor &&) |
void | subscribe (const char *identifier=0) const |
void | unsubscribe (const char *identifier=0) const |
unsigned int | n_subscriptions () const |
void | list_subscribers () const |
template<class Archive > | |
void | serialize (Archive &ar, const unsigned int version) |
Additional Inherited Members | |
Static Public Member Functions inherited from Subscriptor | |
static ::ExceptionBase & | ExcInUse (int arg1, char *arg2, std::string &arg3) |
static ::ExceptionBase & | ExcNoSubscriber (char *arg1, char *arg2) |
Public Attributes inherited from Function< dim > | |
const unsigned int | n_components |
Static Public Attributes inherited from Function< dim > | |
static const unsigned int | dimension |
The function xy
in 2d and 3d, not implemented in 1d. This function serves as an example for a vanishing Laplacian.
Definition at line 86 of file function_lib.h.
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virtual |
Return the value of the function at the given point. Unless there is only one component (i.e. the function is scalar), you should state the component you want to have evaluated; it defaults to zero, i.e. the first component.
Reimplemented from Function< dim >.
Definition at line 132 of file function_lib.cc.
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virtual |
Set values
to the point values of the specified component of the function at the points
. It is assumed that values
already has the right size, i.e. the same size as the points
array.
By default, this function repeatedly calls value() for each point separately, to fill the output array.
Reimplemented from Function< dim >.
Definition at line 143 of file function_lib.cc.
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virtual |
Set values
to the point values of the function at the points
. It is assumed that values
already has the right size, i.e. the same size as the points
array, and that all elements be vectors with the same number of components as this function has.
By default, this function repeatedly calls vector_value() for each point separately, to fill the output array.
Reimplemented from Function< dim >.
Definition at line 161 of file function_lib.cc.
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virtual |
Return the gradient of the specified component of the function at the given point.
Reimplemented from Function< dim >.
Definition at line 206 of file function_lib.cc.
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virtual |
Laplacian of the function at one point.
Reimplemented from Function< dim >.
Definition at line 180 of file function_lib.cc.
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virtual |
Laplacian of the function at multiple points.
Reimplemented from Function< dim >.
Definition at line 190 of file function_lib.cc.