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1// std::rel_ops implementation -*- C++ -*-
2
4312e020 3// Copyright (C) 2001, 2002, 2004, 2005, 2008 Free Software Foundation, Inc.
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4//
5// This file is part of the GNU ISO C++ Library. This library is free
6// software; you can redistribute it and/or modify it under the
7// terms of the GNU General Public License as published by the
748086b7 8// Free Software Foundation; either version 3, or (at your option)
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9// any later version.
10
11// This library is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14// GNU General Public License for more details.
15
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16// Under Section 7 of GPL version 3, you are granted additional
17// permissions described in the GCC Runtime Library Exception, version
18// 3.1, as published by the, 2009 Free Software Foundation.
42526146 19
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20// You should have received a copy of the GNU General Public License and
21// a copy of the GCC Runtime Library Exception along with this program;
22// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23// <http://www.gnu.org/licenses/>.
42526146 24
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25/*
26 *
27 * Copyright (c) 1994
28 * Hewlett-Packard Company
29 *
30 * Permission to use, copy, modify, distribute and sell this software
31 * and its documentation for any purpose is hereby granted without fee,
32 * provided that the above copyright notice appear in all copies and
33 * that both that copyright notice and this permission notice appear
34 * in supporting documentation. Hewlett-Packard Company makes no
35 * representations about the suitability of this software for any
36 * purpose. It is provided "as is" without express or implied warranty.
37 *
38 * Copyright (c) 1996,1997
39 * Silicon Graphics
40 *
41 * Permission to use, copy, modify, distribute and sell this software
42 * and its documentation for any purpose is hereby granted without fee,
43 * provided that the above copyright notice appear in all copies and
44 * that both that copyright notice and this permission notice appear
45 * in supporting documentation. Silicon Graphics makes no
46 * representations about the suitability of this software for any
47 * purpose. It is provided "as is" without express or implied warranty.
48 *
49 */
50
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51/** @file stl_relops.h
52 * This is an internal header file, included by other library headers.
53 * You should not attempt to use it directly.
ffe94f83 54 *
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55 * Inclusion of this file has been removed from
56 * all of the other STL headers for safety reasons, except std_utility.h.
57 * For more information, see the thread of about twenty messages starting
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58 * with http://gcc.gnu.org/ml/libstdc++/2001-01/msg00223.html, or
59 * http://gcc.gnu.org/onlinedocs/libstdc++/faq.html#faq.ambiguous_overloads
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60 *
61 * Short summary: the rel_ops operators should be avoided for the present.
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62 */
63
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64#ifndef _STL_RELOPS_H
65#define _STL_RELOPS_H 1
725dc051 66
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67_GLIBCXX_BEGIN_NAMESPACE(std)
68
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69 namespace rel_ops
70 {
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71 /** @namespace std::rel_ops
72 * @brief The generated relational operators are sequestered here.
73 */
ed6814f7 74
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75 /**
76 * @brief Defines @c != for arbitrary types, in terms of @c ==.
77 * @param x A thing.
78 * @param y Another thing.
79 * @return x != y
80 *
81 * This function uses @c == to determine its result.
82 */
83 template <class _Tp>
84 inline bool
85 operator!=(const _Tp& __x, const _Tp& __y)
86 { return !(__x == __y); }
ffe94f83 87
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88 /**
89 * @brief Defines @c > for arbitrary types, in terms of @c <.
90 * @param x A thing.
91 * @param y Another thing.
92 * @return x > y
93 *
94 * This function uses @c < to determine its result.
95 */
96 template <class _Tp>
97 inline bool
98 operator>(const _Tp& __x, const _Tp& __y)
99 { return __y < __x; }
725dc051 100
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101 /**
102 * @brief Defines @c <= for arbitrary types, in terms of @c <.
103 * @param x A thing.
104 * @param y Another thing.
105 * @return x <= y
106 *
107 * This function uses @c < to determine its result.
108 */
109 template <class _Tp>
110 inline bool
111 operator<=(const _Tp& __x, const _Tp& __y)
112 { return !(__y < __x); }
725dc051 113
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114 /**
115 * @brief Defines @c >= for arbitrary types, in terms of @c <.
116 * @param x A thing.
117 * @param y Another thing.
118 * @return x >= y
119 *
120 * This function uses @c < to determine its result.
121 */
122 template <class _Tp>
123 inline bool
124 operator>=(const _Tp& __x, const _Tp& __y)
125 { return !(__x < __y); }
725dc051 126
d53d7f6e 127 } // namespace rel_ops
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128
129_GLIBCXX_END_NAMESPACE
725dc051 130
3d7c150e 131#endif /* _STL_RELOPS_H */