/usr/include/dolfin/fem/Assembler.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 | // Copyright (C) 2007-2011 Anders Logg
//
// 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/>.
//
// Modified by Garth N. Wells, 2007-2008.
// Modified by Ola Skavhaug, 2008.
//
// First added: 2007-01-17
// Last changed: 2011-09-29
#ifndef __ASSEMBLER_H
#define __ASSEMBLER_H
#include <vector>
#include <dolfin/common/types.h>
namespace dolfin
{
// Forward declarations
class GenericTensor;
class Form;
class SubDomain;
class UFC;
template<typename T> class MeshFunction;
/// This class provides automated assembly of linear systems, or
/// more generally, assembly of a sparse tensor from a given
/// variational form.
///
/// Subdomains for cells and facets may be specified in a number of
/// different ways:
///
/// 1. By explicitly passing _MeshFunction_ (as pointers) to the
/// assemble functions
///
/// 2. By assigning subdomain indicators specified by _MeshFunction_
/// to the _Form_ being assembled:
///
/// .. code-block:: c++
///
/// form.dx = cell_domains
/// form.ds = exterior_facet_domains
/// form.dS = interior_facet_domains
///
/// 3. By markers stored as part of the _Mesh_ (in _MeshDomains_)
///
/// 4. By specifying a _SubDomain_ which specifies the domain numbered
/// as 0 (with the rest treated as domain number 1)
///
/// Note that (1) overrides (2), which overrides (3).
class Assembler
{
public:
/// Assemble tensor from given form
///
/// *Arguments*
/// A (_GenericTensor_)
/// The tensor to assemble.
/// a (_Form_)
/// The form to assemble the tensor from.
/// reset_sparsity (bool)
/// Optional argument: Default value is true.
/// This controls whether the sparsity pattern of the
/// given tensor is reset prior to assembly.
/// add_values (bool)
/// Optional argument: Default value is false.
/// This controls whether values are added to the given
/// tensor or if it is zeroed prior to assembly.
/// finalize_tensor (bool)
/// Optional argument: Default value is true.
/// This controls whether the assembler finalizes the
/// given tensor after assembly is completed by calling
/// A.apply().
static void assemble(GenericTensor& A,
const Form& a,
bool reset_sparsity=true,
bool add_values=false,
bool finalize_tensor=true);
/// Assemble tensor from given form on subdomain
///
/// *Arguments*
/// A (_GenericTensor_)
/// The tensor to assemble.
/// a (_Form_)
/// The form to assemble the tensor from.
/// sub_domain (_SubDomain_)
/// The subdomain to assemble on.
/// reset_sparsity (bool)
/// Optional argument: Default value is true.
/// This controls whether the sparsity pattern of the
/// given tensor is reset prior to assembly.
/// add_values (bool)
/// Optional argument: Default value is false.
/// This controls whether values are added to the given
/// tensor or if it is zeroed prior to assembly.
/// finalize_tensor (bool)
/// Optional argument: Default value is true.
/// This controls whether the assembler finalizes the
/// given tensor after assembly is completed by calling
/// A.apply().
static void assemble(GenericTensor& A,
const Form& a,
const SubDomain& sub_domain,
bool reset_sparsity=true,
bool add_values=false,
bool finalize_tensor=true);
/// Assemble tensor from given form on subdomains
///
/// *Arguments*
/// A (_GenericTensor_)
/// The tensor to assemble.
/// a (_Form_)
/// The form to assemble the tensor from.
/// cell_domains (_MeshFunction_ <uint>)
/// Cell domains.
/// exterior_facet_domains (_MeshFunction_ <uint>)
/// The exterior facet domains.
/// interior_facet_domains (_MeshFunction_ <uint>)
/// The interior facet domains.
/// reset_sparsity (bool)
/// Optional argument: Default value is true.
/// This controls whether the sparsity pattern of the
/// given tensor is reset prior to assembly.
/// add_values (bool)
/// Optional argument: Default value is false.
/// This controls whether values are added to the given
/// tensor or if it is zeroed prior to assembly.
/// finalize_tensor (bool)
/// Optional argument: Default value is true.
/// This controls whether the assembler finalizes the
/// given tensor after assembly is completed by calling
/// A.apply().
static void assemble(GenericTensor& A,
const Form& a,
const MeshFunction<uint>* cell_domains,
const MeshFunction<uint>* exterior_facet_domains,
const MeshFunction<uint>* interior_facet_domains,
bool reset_sparsity=true,
bool add_values=false,
bool finalize_tensor=true);
/// Assemble tensor from given form over cells. This function is
/// provided for users who wish to build a customized assembler.
static void assemble_cells(GenericTensor& A,
const Form& a,
UFC& ufc,
const MeshFunction<uint>* domains,
std::vector<double>* values);
/// Assemble tensor from given form over exterior facets. This
/// function is provided for users who wish to build a customized
/// assembler.
static void assemble_exterior_facets(GenericTensor& A,
const Form& a,
UFC& ufc,
const MeshFunction<uint>* domains,
std::vector<double>* values);
/// Assemble tensor from given form over interior facets. This
/// function is provided for users who wish to build a customized
/// assembler.
static void assemble_interior_facets(GenericTensor& A,
const Form& a,
UFC& ufc,
const MeshFunction<uint>* domains,
std::vector<double>* values);
};
}
#endif
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