00001 // std::rel_ops implementation -*- C++ -*- 00002 00003 // Copyright (C) 2001, 2002, 2004, 2005, 2008 Free Software Foundation, Inc. 00004 // 00005 // This file is part of the GNU ISO C++ Library. This library is free 00006 // software; you can redistribute it and/or modify it under the 00007 // terms of the GNU General Public License as published by the 00008 // Free Software Foundation; either version 3, or (at your option) 00009 // any later version. 00010 00011 // This library is distributed in the hope that it will be useful, 00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00014 // GNU General Public License for more details. 00015 00016 // Under Section 7 of GPL version 3, you are granted additional 00017 // permissions described in the GCC Runtime Library Exception, version 00018 // 3.1, as published by the, 2009 Free Software Foundation. 00019 00020 // You should have received a copy of the GNU General Public License and 00021 // a copy of the GCC Runtime Library Exception along with this program; 00022 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 00023 // <http://www.gnu.org/licenses/>. 00024 00025 /* 00026 * 00027 * Copyright (c) 1994 00028 * Hewlett-Packard Company 00029 * 00030 * Permission to use, copy, modify, distribute and sell this software 00031 * and its documentation for any purpose is hereby granted without fee, 00032 * provided that the above copyright notice appear in all copies and 00033 * that both that copyright notice and this permission notice appear 00034 * in supporting documentation. Hewlett-Packard Company makes no 00035 * representations about the suitability of this software for any 00036 * purpose. It is provided "as is" without express or implied warranty. 00037 * 00038 * Copyright (c) 1996,1997 00039 * Silicon Graphics 00040 * 00041 * Permission to use, copy, modify, distribute and sell this software 00042 * and its documentation for any purpose is hereby granted without fee, 00043 * provided that the above copyright notice appear in all copies and 00044 * that both that copyright notice and this permission notice appear 00045 * in supporting documentation. Silicon Graphics makes no 00046 * representations about the suitability of this software for any 00047 * purpose. It is provided "as is" without express or implied warranty. 00048 * 00049 */ 00050 00051 /** @file stl_relops.h 00052 * This is an internal header file, included by other library headers. 00053 * You should not attempt to use it directly. 00054 * 00055 * Inclusion of this file has been removed from 00056 * all of the other STL headers for safety reasons, except std_utility.h. 00057 * For more information, see the thread of about twenty messages starting 00058 * with http://gcc.gnu.org/ml/libstdc++/2001-01/msg00223.html, or 00059 * http://gcc.gnu.org/onlinedocs/libstdc++/faq.html#faq.ambiguous_overloads 00060 * 00061 * Short summary: the rel_ops operators should be avoided for the present. 00062 */ 00063 00064 #ifndef _STL_RELOPS_H 00065 #define _STL_RELOPS_H 1 00066 00067 _GLIBCXX_BEGIN_NAMESPACE(std) 00068 00069 namespace rel_ops 00070 { 00071 /** @namespace std::rel_ops 00072 * @brief The generated relational operators are sequestered here. 00073 */ 00074 00075 /** 00076 * @brief Defines @c != for arbitrary types, in terms of @c ==. 00077 * @param x A thing. 00078 * @param y Another thing. 00079 * @return x != y 00080 * 00081 * This function uses @c == to determine its result. 00082 */ 00083 template <class _Tp> 00084 inline bool 00085 operator!=(const _Tp& __x, const _Tp& __y) 00086 { return !(__x == __y); } 00087 00088 /** 00089 * @brief Defines @c > for arbitrary types, in terms of @c <. 00090 * @param x A thing. 00091 * @param y Another thing. 00092 * @return x > y 00093 * 00094 * This function uses @c < to determine its result. 00095 */ 00096 template <class _Tp> 00097 inline bool 00098 operator>(const _Tp& __x, const _Tp& __y) 00099 { return __y < __x; } 00100 00101 /** 00102 * @brief Defines @c <= for arbitrary types, in terms of @c <. 00103 * @param x A thing. 00104 * @param y Another thing. 00105 * @return x <= y 00106 * 00107 * This function uses @c < to determine its result. 00108 */ 00109 template <class _Tp> 00110 inline bool 00111 operator<=(const _Tp& __x, const _Tp& __y) 00112 { return !(__y < __x); } 00113 00114 /** 00115 * @brief Defines @c >= for arbitrary types, in terms of @c <. 00116 * @param x A thing. 00117 * @param y Another thing. 00118 * @return x >= y 00119 * 00120 * This function uses @c < to determine its result. 00121 */ 00122 template <class _Tp> 00123 inline bool 00124 operator>=(const _Tp& __x, const _Tp& __y) 00125 { return !(__x < __y); } 00126 00127 } // namespace rel_ops 00128 00129 _GLIBCXX_END_NAMESPACE 00130 00131 #endif /* _STL_RELOPS_H */