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
|
// Copyright (c) 1999 Utrecht University (The Netherlands),
// ETH Zurich (Switzerland), Freie Universitaet Berlin (Germany),
// INRIA Sophia-Antipolis (France), Martin-Luther-University Halle-Wittenberg
// (Germany), Max-Planck-Institute Saarbruecken (Germany), RISC Linz (Austria),
// and Tel-Aviv University (Israel). All rights reserved.
//
// This file is part of CGAL (www.cgal.org); 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; version 2.1 of the License.
// See the file LICENSE.LGPL distributed with CGAL.
//
// Licensees holding a valid commercial license may use this file in
// accordance with the commercial license agreement provided with the software.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
//
// $URL: svn+ssh://scm.gforge.inria.fr/svn/cgal/branches/CGAL-3.2-branch/Kernel_23/include/CGAL/functions_on_enums.h $
// $Id: functions_on_enums.h 28567 2006-02-16 14:30:13Z lsaboret $
//
//
// Author(s) : Andreas Fabri
// Stefan Schirra
#ifndef CGAL_FUNCTIONS_ON_ENUMS_H
#define CGAL_FUNCTIONS_ON_ENUMS_H
#include <CGAL/enum.h>
#include <CGAL/Kernel/Same_uncertainty.h>
CGAL_BEGIN_NAMESPACE
template <class T>
inline
T
opposite(const T& t)
{ return -t; }
inline
Sign
opposite(Sign o)
{ return static_cast<Sign>( - static_cast<int>(o)); }
inline
Comparison_result
opposite(Comparison_result o)
{ return static_cast<Comparison_result>( - static_cast<int>(o)); }
inline
Oriented_side
opposite(Oriented_side os)
{ return static_cast<Oriented_side>( - static_cast<int>(os)); }
inline
Bounded_side
opposite(Bounded_side bs)
{ return static_cast<Bounded_side>( - static_cast<int>(bs)); }
inline
Angle
opposite(Angle a)
{ return static_cast<Angle>( - static_cast<int>(a)); }
#ifdef CGAL_CFG_MATCHING_BUG_5
template < typename T, typename U >
inline
T enum_cast_bug(const U& u, const T*)
{ return static_cast<T>(u); }
template < typename T, typename U >
inline
typename Same_uncertainty<T,U>::type enum_cast(const U& u)
{ return enum_cast_bug(u, (const T*)0); }
#else
template < typename T, typename U >
inline
T enum_cast(const U& u)
{ return static_cast<T>(u); }
#endif
CGAL_END_NAMESPACE
#endif // CGAL_FUNCTIONS_ON_ENUMS_H
|
