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
|
// This file is part of ff3d - http://www.freefem.org/ff3d
// Copyright (C) 2001, 2002, 2003 Stphane Del Pino
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2, or (at your option)
// any later version.
// This program 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 General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software Foundation,
// Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
// $Id: ScalarFunctionConstant.hpp,v 1.3 2006/10/28 12:26:54 delpinux Exp $
#ifndef SCALAR_FUNCTION_CONSTANT_HPP
#define SCALAR_FUNCTION_CONSTANT_HPP
#include <Types.hpp>
#include <ScalarFunctionBase.hpp>
/**
* @file ScalarFunctionConstant.hpp
* @author Stephane Del Pino
* @date Thu Jul 20 00:54:54 2006
*
* @brief constant function
*
*/
class ScalarFunctionConstant
: public ScalarFunctionBase
{
private:
const real_t __value; /**< function value */
protected:
/**
* Writes the function to a stream
*
* @param os the output stream
*
* @return os
*/
std::ostream& __put(std::ostream& os) const
{
os << __value;
return os;
}
public:
/**
* Evaluates the function at position @f$ X @f$
*
* @return __value
*/
real_t operator()(const TinyVector<3, real_t>& X) const
{
return __value;
}
/**
* Checks if the function can be simplified
*
* @return true
*/
bool canBeSimplified() const
{
return true;
}
/**
* Constructor
*
* @param value constant value
*/
ScalarFunctionConstant(const real_t& value)
: ScalarFunctionBase(ScalarFunctionBase::constant),
__value(value)
{
;
}
/**
* Destructor
*
*/
~ScalarFunctionConstant()
{
;
}
};
#endif // SCALAR_FUNCTION_CONSTANT_HPP
|
