Provided by: librheolef-dev_5.93-2_amd64 bug


       form_element - bilinear form on a single element


       The  form_element class defines functions that compute a bilinear form defined between two
       polynomial basis on a single geometrical element. This bilinear form is represented  by  a

       The bilinear form is designated by a string, e.g. "mass", "grad_grad", ...  indicating the
       form. The form depends also of the geometrical element: triangle, square, tetrahedron (see
       .  geo_element internal}').


       The form_element class is managed by (see .  smart_pointer internal}').  This class uses a
       pointer on a pure virtual class form_element_rep while the effective code  refers  to  the
       specific concrete derived classes: mass, grad_grad, etc.


       class form_element : public smart_pointer<form_element_rep> {

       // typedefs:

           typedef size_t size_type;

       // allocators:

           form_element (std::string name = "");

       // modifier:

           void initialize (const space& X, const space& Y) const;

           //  optional, for scalar-weighted forms:
           void set_weight (const field& wh) const;

               //  for special forms for which coordinate-system specific weights (ie, cylindrical
               //  coordinates weights) should not be used:
               void set_use_coordinate_system_weight(bool use) const;

       // accessor:

           void operator() (const geo_element& K, ublas::matrix<Float>& m) const;
           const field& get_weight() const;