1 // std::rel_ops implementation -*- C++ -*- 2 3 // Copyright (C) 2001, 2002, 2004, 2005, 2008, 2010, 2011 4 // Free Software Foundation, Inc. 5 // 6 // This file is part of the GNU ISO C++ Library. This library is free 7 // software; you can redistribute it and/or modify it under the 8 // terms of the GNU General Public License as published by the 9 // Free Software Foundation; either version 3, or (at your option) 10 // any later version. 11 12 // This library is distributed in the hope that it will be useful, 13 // but WITHOUT ANY WARRANTY; without even the implied warranty of 14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 // GNU General Public License for more details. 16 17 // Under Section 7 of GPL version 3, you are granted additional 18 // permissions described in the GCC Runtime Library Exception, version 19 // 3.1, as published by the, 2009 Free Software Foundation. 20 21 // You should have received a copy of the GNU General Public License and 22 // a copy of the GCC Runtime Library Exception along with this program; 23 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 24 // <http://www.gnu.org/licenses/>. 25 26 /* 27 * 28 * Copyright (c) 1994 29 * Hewlett-Packard Company 30 * 31 * Permission to use, copy, modify, distribute and sell this software 32 * and its documentation for any purpose is hereby granted without fee, 33 * provided that the above copyright notice appear in all copies and 34 * that both that copyright notice and this permission notice appear 35 * in supporting documentation. Hewlett-Packard Company makes no 36 * representations about the suitability of this software for any 37 * purpose. It is provided "as is" without express or implied warranty. 38 * 39 * Copyright (c) 1996,1997 40 * Silicon Graphics 41 * 42 * Permission to use, copy, modify, distribute and sell this software 43 * and its documentation for any purpose is hereby granted without fee, 44 * provided that the above copyright notice appear in all copies and 45 * that both that copyright notice and this permission notice appear 46 * in supporting documentation. Silicon Graphics makes no 47 * representations about the suitability of this software for any 48 * purpose. It is provided "as is" without express or implied warranty. 49 * 50 */ 51 52 /** @file bits/stl_relops.h 53 * This is an internal header file, included by other library headers. 54 * Do not attempt to use it directly. @headername{utility} 55 * 56 * Inclusion of this file has been removed from 57 * all of the other STL headers for safety reasons, except std_utility.h. 58 * For more information, see the thread of about twenty messages starting 59 * with http://gcc.gnu.org/ml/libstdc++/2001-01/msg00223.html, or 60 * http://gcc.gnu.org/onlinedocs/libstdc++/faq.html#faq.ambiguous_overloads 61 * 62 * Short summary: the rel_ops operators should be avoided for the present. 63 */ 64 65 #ifndef _STL_RELOPS_H 66 #define _STL_RELOPS_H 1 67 68 namespace std _GLIBCXX_VISIBILITY(default) 69 { 70 namespace rel_ops 71 { 72 _GLIBCXX_BEGIN_NAMESPACE_VERSION 73 74 /** @namespace std::rel_ops 75 * @brief The generated relational operators are sequestered here. 76 */ 77 78 /** 79 * @brief Defines @c != for arbitrary types, in terms of @c ==. 80 * @param x A thing. 81 * @param y Another thing. 82 * @return x != y 83 * 84 * This function uses @c == to determine its result. 85 */ 86 template <class _Tp> 87 inline bool 88 operator!=(const _Tp& __x, const _Tp& __y) 89 { return !(__x == __y); } 90 91 /** 92 * @brief Defines @c > for arbitrary types, in terms of @c <. 93 * @param x A thing. 94 * @param y Another thing. 95 * @return x > y 96 * 97 * This function uses @c < to determine its result. 98 */ 99 template <class _Tp> 100 inline bool 101 operator>(const _Tp& __x, const _Tp& __y) 102 { return __y < __x; } 103 104 /** 105 * @brief Defines @c <= for arbitrary types, in terms of @c <. 106 * @param x A thing. 107 * @param y Another thing. 108 * @return x <= y 109 * 110 * This function uses @c < to determine its result. 111 */ 112 template <class _Tp> 113 inline bool 114 operator<=(const _Tp& __x, const _Tp& __y) 115 { return !(__y < __x); } 116 117 /** 118 * @brief Defines @c >= for arbitrary types, in terms of @c <. 119 * @param x A thing. 120 * @param y Another thing. 121 * @return x >= y 122 * 123 * This function uses @c < to determine its result. 124 */ 125 template <class _Tp> 126 inline bool 127 operator>=(const _Tp& __x, const _Tp& __y) 128 { return !(__x < __y); } 129 130 _GLIBCXX_END_NAMESPACE_VERSION 131 } // namespace rel_ops 132 133 } // namespace std 134 135 #endif /* _STL_RELOPS_H */ 136
