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1 | // std::rel_ops implementation -*- C++ -*- |
2 | ||
ffe94f83 | 3 | // Copyright (C) 2001, 2002 Free Software Foundation, Inc. |
42526146 PE |
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 | |
8 | // Free Software Foundation; either version 2, or (at your option) | |
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 | ||
16 | // You should have received a copy of the GNU General Public License along | |
17 | // with this library; see the file COPYING. If not, write to the Free | |
18 | // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, | |
19 | // USA. | |
20 | ||
21 | // As a special exception, you may use this file as part of a free software | |
22 | // library without restriction. Specifically, if other files instantiate | |
23 | // templates or use macros or inline functions from this file, or you compile | |
24 | // this file and link it with other files to produce an executable, this | |
25 | // file does not by itself cause the resulting executable to be covered by | |
26 | // the GNU General Public License. This exception does not however | |
27 | // invalidate any other reasons why the executable file might be covered by | |
28 | // the GNU General Public License. | |
29 | ||
725dc051 BK |
30 | /* |
31 | * | |
32 | * Copyright (c) 1994 | |
33 | * Hewlett-Packard Company | |
34 | * | |
35 | * Permission to use, copy, modify, distribute and sell this software | |
36 | * and its documentation for any purpose is hereby granted without fee, | |
37 | * provided that the above copyright notice appear in all copies and | |
38 | * that both that copyright notice and this permission notice appear | |
39 | * in supporting documentation. Hewlett-Packard Company makes no | |
40 | * representations about the suitability of this software for any | |
41 | * purpose. It is provided "as is" without express or implied warranty. | |
42 | * | |
43 | * Copyright (c) 1996,1997 | |
44 | * Silicon Graphics | |
45 | * | |
46 | * Permission to use, copy, modify, distribute and sell this software | |
47 | * and its documentation for any purpose is hereby granted without fee, | |
48 | * provided that the above copyright notice appear in all copies and | |
49 | * that both that copyright notice and this permission notice appear | |
50 | * in supporting documentation. Silicon Graphics makes no | |
51 | * representations about the suitability of this software for any | |
52 | * purpose. It is provided "as is" without express or implied warranty. | |
53 | * | |
54 | */ | |
55 | ||
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56 | /** @file stl_relops.h |
57 | * This is an internal header file, included by other library headers. | |
58 | * You should not attempt to use it directly. | |
ffe94f83 | 59 | * |
04b7c941 | 60 | * @if maint |
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61 | * Inclusion of this file has been removed from |
62 | * all of the other STL headers for safety reasons, except std_utility.h. | |
63 | * For more information, see the thread of about twenty messages starting | |
64 | * with http://gcc.gnu.org/ml/libstdc++/2001-01/msg00223.html , or the | |
65 | * FAQ at http://gcc.gnu.org/onlinedocs/libstdc++/faq/index.html#4_4 . | |
66 | * | |
67 | * Short summary: the rel_ops operators should be avoided for the present. | |
04b7c941 | 68 | * @endif |
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69 | */ |
70 | ||
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71 | #ifndef _CPP_BITS_STL_RELOPS_H |
72 | #define _CPP_BITS_STL_RELOPS_H 1 | |
73 | ||
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74 | namespace std |
75 | { | |
76 | namespace rel_ops | |
77 | { | |
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78 | /** @namespace std::rel_ops |
79 | * @brief The generated relational operators are sequestered here. | |
80 | */ | |
81 | ||
82 | /** | |
83 | * @brief Defines @c != for arbitrary types, in terms of @c ==. | |
84 | * @param x A thing. | |
85 | * @param y Another thing. | |
86 | * @return x != y | |
87 | * | |
88 | * This function uses @c == to determine its result. | |
89 | */ | |
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90 | template <class _Tp> |
91 | inline bool operator!=(const _Tp& __x, const _Tp& __y) { | |
92 | return !(__x == __y); | |
93 | } | |
94 | ||
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95 | /** |
96 | * @brief Defines @c > for arbitrary types, in terms of @c <. | |
97 | * @param x A thing. | |
98 | * @param y Another thing. | |
99 | * @return x > y | |
100 | * | |
101 | * This function uses @c < to determine its result. | |
102 | */ | |
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103 | template <class _Tp> |
104 | inline bool operator>(const _Tp& __x, const _Tp& __y) { | |
105 | return __y < __x; | |
106 | } | |
107 | ||
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108 | /** |
109 | * @brief Defines @c <= for arbitrary types, in terms of @c <. | |
110 | * @param x A thing. | |
111 | * @param y Another thing. | |
112 | * @return x <= y | |
113 | * | |
114 | * This function uses @c < to determine its result. | |
115 | */ | |
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116 | template <class _Tp> |
117 | inline bool operator<=(const _Tp& __x, const _Tp& __y) { | |
118 | return !(__y < __x); | |
119 | } | |
120 | ||
ffe94f83 PE |
121 | /** |
122 | * @brief Defines @c >= for arbitrary types, in terms of @c <. | |
123 | * @param x A thing. | |
124 | * @param y Another thing. | |
125 | * @return x >= y | |
126 | * | |
127 | * This function uses @c < to determine its result. | |
128 | */ | |
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129 | template <class _Tp> |
130 | inline bool operator>=(const _Tp& __x, const _Tp& __y) { | |
131 | return !(__x < __y); | |
132 | } | |
133 | ||
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134 | } // namespace rel_ops |
135 | } // namespace std | |
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136 | |
137 | #endif /* _CPP_BITS_STL_RELOPS_H */ |