/usr/include/dolfin/fem/MultiMeshAssembler.h is in libdolfin-dev 2016.2.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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//
// 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: 2013-09-12
// Last changed: 2015-01-08
#ifndef __MultiMesh_ASSEMBLER_H
#define __MultiMesh_ASSEMBLER_H
#include "AssemblerBase.h"
#include "Assembler.h"
namespace dolfin
{
// Forward declarations
class GenericTensor;
class MultiMeshForm;
/// This class implements functionality for finite element assembly
/// over cut and composite finite element (MultiMesh) function spaces.
class MultiMeshAssembler : public AssemblerBase
{
public:
/// Constructor
MultiMeshAssembler();
/// Assemble tensor from given form
///
/// *Arguments*
/// A (_GenericTensor_)
/// The tensor to assemble.
/// a (_Form_)
/// The form to assemble the tensor from.
void assemble(GenericTensor& A, const MultiMeshForm& a);
/// extend_cut_cell_integration (bool)
/// Default value is false.
/// This controls whether the integration over cut cells
/// should extend to the part of cut cells covered by cells
/// from higher ranked meshes - thus including both the cut
/// cell part and the overlap part.
bool extend_cut_cell_integration;
private:
// Assemble over uncut cells
void _assemble_uncut_cells(GenericTensor& A, const MultiMeshForm& a);
// Assemble over cut cells
void _assemble_cut_cells(GenericTensor& A, const MultiMeshForm& a);
// Assemble over interface
void _assemble_interface(GenericTensor& A, const MultiMeshForm& a);
// Assemble over overlap
void _assemble_overlap(GenericTensor& A, const MultiMeshForm& a);
// Initialize global tensor
void _init_global_tensor(GenericTensor& A, const MultiMeshForm& a);
};
}
#endif
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