1 // std::rel_ops implementation -*- C++ -*- 2 3 // Copyright (C) 2001, 2002, 2004, 2005, 2008 Free Software Foundation, Inc. 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 3, 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 // 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. 19 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/>. 24 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 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. 54 * 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 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 60 * 61 * Short summary: the rel_ops operators should be avoided for the present. 62 */ 63 64 #ifndef _STL_RELOPS_H 65 #define _STL_RELOPS_H 1 66 67 _GLIBCXX_BEGIN_NAMESPACE(std) 68 69 namespace rel_ops 70 { 71 /** @namespace std::rel_ops 72 * @brief The generated relational operators are sequestered here. 73 */ 74 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); } 87 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; } 100 101 /** 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); } 113 114 /** 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); } 126 127 } // namespace rel_ops 128 129 _GLIBCXX_END_NAMESPACE 130 131 #endif /* _STL_RELOPS_H */ 132
