/usr/include/dolfin/function/Constant.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 | // Copyright (C) 2006-2009 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 Martin Sandve Alnes, 2008.
// Modified by Garth N. Wells, 2008-2011.
//
// First added: 2006-02-09
// Last changed: 2011-05-15
#ifndef __CONSTANT_H
#define __CONSTANT_H
#include <vector>
#include "Expression.h"
namespace dolfin
{
class Mesh;
/// This class represents a constant-valued expression.
class Constant : public Expression
{
public:
/// Create scalar constant
///
/// *Arguments*
/// value (double)
/// The scalar to create a Constant object from.
///
/// *Example*
/// .. code-block:: c++
///
/// Constant c(1.0);
///
Constant(double value);
/// Create vector constant (dim = 2)
///
/// *Arguments*
/// value0 (double)
/// The first vector element.
/// value1 (double)
/// The second vector element.
///
/// *Example*
/// .. code-block:: c++
///
/// Constant B(0.0, 1.0);
///
Constant(double value0, double value1);
/// Create vector constant (dim = 3)
///
/// *Arguments*
/// value0 (double)
/// The first vector element.
/// value1 (double)
/// The second vector element.
/// value2 (double)
/// The third vector element.
///
/// *Example*
/// .. code-block:: c++
///
/// Constant T(0.0, 1.0, 0.0);
///
Constant(double value0, double value1, double value2);
/// Create vector-valued constant
///
/// *Arguments*
/// values (std::vector<double>)
/// Values to create a vector-valued constant from.
Constant(std::vector<double> values);
/// Create tensor-valued constant for flattened array of values
///
/// *Arguments*
/// value_shape (std::vector<uint>)
/// Shape of tensor.
/// values (std::vector<double>)
/// Values to create tensor-valued constant from.
Constant(std::vector<uint> value_shape,
std::vector<double> values);
/// Copy constructor
///
/// *Arguments*
/// constant (_Constant_)
/// Object to be copied.
Constant(const Constant& constant);
/// Destructor
~Constant();
/// Assignment operator
///
/// *Arguments*
/// constant (_Constant_)
/// Another constant.
const Constant& operator= (const Constant& constant);
/// Assignment operator
///
/// *Arguments*
/// constant (double)
/// Another constant.
const Constant& operator= (double constant);
/// Cast to double (for scalar constants)
///
/// *Returns*
/// double
/// The scalar value.
operator double() const;
//--- Implementation of Expression interface ---
void eval(Array<double>& values, const Array<double>& x) const;
private:
// Values of constant function
std::vector<double> _values;
};
}
#endif
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