/usr/include/dolfin/function/CoefficientAssigner.h is in libdolfin-dev 1.4.0+dfsg-4.
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: 2008-10-28
// Last changed: 2009-10-04
#ifndef __COEFFICIENT_ASSIGNER_H
#define __COEFFICIENT_ASSIGNER_H
#include <cstddef>
namespace dolfin
{
class Form;
class GenericFunction;
/// This class is used for assignment of coefficients to
/// forms, which allows magic like
///
/// a.f = f
/// a.g = g
///
/// which will insert the coefficients f and g in the correct
/// positions in the list of coefficients for the form.
class CoefficientAssigner
{
public:
/// Create coefficient assigner for coefficient with given number
CoefficientAssigner(Form& form, std::size_t number);
/// Destructor
~CoefficientAssigner();
/// Assign coefficient
void operator= (const GenericFunction& coefficient);
private:
// The form
Form& _form;
// The number of the coefficient
std::size_t _number;
};
}
#endif
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