138 lines
4.7 KiB
C++
138 lines
4.7 KiB
C++
// std::rel_ops implementation -*- C++ -*-
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// Copyright (C) 2001, 2002, 2004 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 2, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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// As a special exception, you may use this file as part of a free software
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// library without restriction. Specifically, if other files instantiate
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// templates or use macros or inline functions from this file, or you compile
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// this file and link it with other files to produce an executable, this
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// file does not by itself cause the resulting executable to be covered by
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// the GNU General Public License. This exception does not however
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// invalidate any other reasons why the executable file might be covered by
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// the GNU General Public License.
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/*
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*
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* Copyright (c) 1994
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* Hewlett-Packard Company
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*
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* Permission to use, copy, modify, distribute and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation. Hewlett-Packard Company makes no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*
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* Copyright (c) 1996,1997
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* Silicon Graphics
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*
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* Permission to use, copy, modify, distribute and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation. Silicon Graphics makes no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*
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*/
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/** @file stl_relops.h
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* This is an internal header file, included by other library headers.
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* You should not attempt to use it directly.
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*
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* @if maint
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* Inclusion of this file has been removed from
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* all of the other STL headers for safety reasons, except std_utility.h.
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* For more information, see the thread of about twenty messages starting
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* with http://gcc.gnu.org/ml/libstdc++/2001-01/msg00223.html , or the
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* FAQ at http://gcc.gnu.org/onlinedocs/libstdc++/faq/index.html#4_4 .
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*
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* Short summary: the rel_ops operators should be avoided for the present.
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* @endif
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*/
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#ifndef _STL_RELOPS_H
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#define _STL_RELOPS_H 1
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namespace std
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{
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namespace rel_ops
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{
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/** @namespace std::rel_ops
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* @brief The generated relational operators are sequestered here.
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*/
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/**
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* @brief Defines @c != for arbitrary types, in terms of @c ==.
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* @param x A thing.
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* @param y Another thing.
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* @return x != y
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*
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* This function uses @c == to determine its result.
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*/
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template <class _Tp>
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inline bool
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operator!=(const _Tp& __x, const _Tp& __y)
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{ return !(__x == __y); }
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/**
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* @brief Defines @c > for arbitrary types, in terms of @c <.
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* @param x A thing.
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* @param y Another thing.
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* @return x > y
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*
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* This function uses @c < to determine its result.
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*/
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template <class _Tp>
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inline bool
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operator>(const _Tp& __x, const _Tp& __y)
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{ return __y < __x; }
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/**
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* @brief Defines @c <= for arbitrary types, in terms of @c <.
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* @param x A thing.
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* @param y Another thing.
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* @return x <= y
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*
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* This function uses @c < to determine its result.
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*/
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template <class _Tp>
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inline bool
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operator<=(const _Tp& __x, const _Tp& __y)
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{ return !(__y < __x); }
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/**
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* @brief Defines @c >= for arbitrary types, in terms of @c <.
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* @param x A thing.
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* @param y Another thing.
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* @return x >= y
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*
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* This function uses @c < to determine its result.
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*/
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template <class _Tp>
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inline bool
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operator>=(const _Tp& __x, const _Tp& __y)
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{ return !(__x < __y); }
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} // namespace rel_ops
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} // namespace std
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#endif /* _STL_RELOPS_H */
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