/usr/include/dolfin/fem/FiniteElement.h is in libdolfin1.0-dev 1.0.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 | // Copyright (C) 2008-20011 Anders Logg and Garth N. Wells
//
// This file is part of DOLFIN.
//
// DOLFIN is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// DOLFIN is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with DOLFIN. If not, see <http://www.gnu.org/licenses/>.
//
// First added: 2008-09-11
// Last changed: 2011-04-13
#ifndef __FINITE_ELEMENT_H
#define __FINITE_ELEMENT_H
#include <vector>
#include <boost/shared_ptr.hpp>
#include <dolfin/common/types.h>
#include "UFCCell.h"
namespace dolfin
{
/// This is a wrapper for a UFC finite element (ufc::finite_element).
class FiniteElement
{
public:
/// Create finite element from UFC finite element (data may be shared)
FiniteElement(boost::shared_ptr<const ufc::finite_element> element);
/// Destructor
~FiniteElement() {}
//--- Direct wrappers for ufc::finite_element ---
/// Return a string identifying the finite element
std::string signature() const
{
dolfin_assert(_ufc_element);
return _ufc_element->signature();
}
/// Return the cell shape
ufc::shape cell_shape() const
{
dolfin_assert(_ufc_element);
return _ufc_element->cell_shape();
}
// Return the topological dimension of the cell shape
uint topological_dimension() const
{
dolfin_assert(_ufc_element);
return _ufc_element->topological_dimension();
}
// Return the geometric dimension of the cell shape
virtual unsigned int geometric_dimension() const
{
dolfin_assert(_ufc_element);
return _ufc_element->geometric_dimension();
}
/// Return the dimension of the finite element function space
uint space_dimension() const
{
dolfin_assert(_ufc_element);
return _ufc_element->space_dimension();
}
/// Return the rank of the value space
uint value_rank() const
{
dolfin_assert(_ufc_element);
return _ufc_element->value_rank();
}
/// Return the dimension of the value space for axis i
uint value_dimension(uint i) const
{
dolfin_assert(_ufc_element);
return _ufc_element->value_dimension(i);
}
/// Evaluate basis function i at given point in cell
void evaluate_basis(uint i, double* values, const double* x,
const ufc::cell& cell) const
{
dolfin_assert(_ufc_element);
_ufc_element->evaluate_basis(i, values, x, cell);
}
/// Evaluate all basis functions at given point in cell
void evaluate_basis_all(double* values,
const double* coordinates,
const ufc::cell& c) const
{
dolfin_assert(_ufc_element);
_ufc_element->evaluate_basis_all(values, coordinates, c);
}
/// Evaluate order n derivatives of basis function i at given point in cell
void evaluate_basis_derivatives(unsigned int i,
unsigned int n,
double* values,
const double* x,
const ufc::cell& cell) const
{
dolfin_assert(_ufc_element);
_ufc_element->evaluate_basis_derivatives(i, n, values, x, cell);
}
/// Evaluate order n derivatives of all basis functions at given point in cell
void evaluate_basis_derivatives_all(unsigned int n,
double* values,
const double* coordinates,
const ufc::cell& c) const
{
dolfin_assert(_ufc_element);
_ufc_element->evaluate_basis_derivatives_all(n, values, coordinates, c);
}
/// Evaluate linear functional for dof i on the function f
double evaluate_dof(uint i,
const ufc::function& function,
const ufc::cell& cell) const
{
dolfin_assert(_ufc_element);
return _ufc_element->evaluate_dof(i, function, cell);
}
/// Evaluate linear functionals for all dofs on the function f
void evaluate_dofs(double* values,
const ufc::function& f,
const ufc::cell& c) const
{
dolfin_assert(_ufc_element);
_ufc_element->evaluate_dofs(values, f, c);
}
/// Interpolate vertex values from dof values
void interpolate_vertex_values(double* vertex_values,
double* coefficients,
const ufc::cell& cell) const
{
dolfin_assert(_ufc_element);
_ufc_element->interpolate_vertex_values(vertex_values, coefficients, cell);
}
/// Map coordinate xhat from reference cell to coordinate x in cell
void map_from_reference_cell(double* x,
const double* xhat,
const ufc::cell& c) const
{
dolfin_assert(_ufc_element);
_ufc_element->map_from_reference_cell(x, xhat, c);
}
/// Map from coordinate x in cell to coordinate xhat in reference cell
void map_to_reference_cell(double* xhat,
const double* x,
const ufc::cell& c) const
{
dolfin_assert(_ufc_element);
_ufc_element->map_to_reference_cell(xhat, x, c);
}
/// Return the number of sub elements (for a mixed element)
uint num_sub_elements() const
{
dolfin_assert(_ufc_element);
return _ufc_element->num_sub_elements();
}
//--- DOLFIN-specific extensions of the interface ---
/// Return simple hash of the signature string
uint hash() const
{ return _hash; }
/// Evaluate basis function i at given point in cell
void evaluate_basis(uint i, double* values, const double* x,
const Cell& cell) const
{
dolfin_assert(_ufc_element);
UFCCell ufc_cell(cell, false);
_ufc_element->evaluate_basis(i, values, x, ufc_cell);
}
/// Evaluate all basis functions at given point in cell
void evaluate_basis_all(double* values, const double* coordinates,
const Cell& cell) const
{
dolfin_assert(_ufc_element);
UFCCell ufc_cell(cell, false);
_ufc_element->evaluate_basis_all(values, coordinates, ufc_cell);
}
/// Create a new finite element for sub element i (for a mixed element)
boost::shared_ptr<const FiniteElement> create_sub_element(uint i) const
{
dolfin_assert(_ufc_element);
boost::shared_ptr<const ufc::finite_element> ufc_element(_ufc_element->create_sub_element(i));
boost::shared_ptr<const FiniteElement> element(new const FiniteElement(ufc_element));
return element;
}
/// Create a new class instance
boost::shared_ptr<const FiniteElement> create() const
{
dolfin_assert(_ufc_element);
boost::shared_ptr<const ufc::finite_element> ufc_element(_ufc_element->create());
return boost::shared_ptr<const FiniteElement>(new FiniteElement(ufc_element));
}
/// Extract sub finite element for component
boost::shared_ptr<const FiniteElement> extract_sub_element(const std::vector<uint>& component) const;
private:
// Recursively extract sub finite element
static boost::shared_ptr<const FiniteElement> extract_sub_element(const FiniteElement& finite_element,
const std::vector<uint>& component);
// UFC finite element
boost::shared_ptr<const ufc::finite_element> _ufc_element;
// Simple hash of the signature string
uint _hash;
};
}
#endif
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