1 // Pair implementation -*- C++ -*-
3 // Copyright (C) 2001 Free Software Foundation, Inc.
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)
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.
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,
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.
33 * Hewlett-Packard Company
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.
44 * Copyright (c) 1996,1997
45 * Silicon Graphics Computer Systems, Inc.
47 * Permission to use, copy, modify, distribute and sell this software
48 * and its documentation for any purpose is hereby granted without fee,
49 * provided that the above copyright notice appear in all copies and
50 * that both that copyright notice and this permission notice appear
51 * in supporting documentation. Silicon Graphics makes no
52 * representations about the suitability of this software for any
53 * purpose. It is provided "as is" without express or implied warranty.
56 /* NOTE: This is an internal header file, included by other STL headers.
57 * You should not attempt to use it directly.
60 #ifndef __SGI_STL_INTERNAL_PAIR_H
61 #define __SGI_STL_INTERNAL_PAIR_H
66 template <class _T1, class _T2>
68 typedef _T1 first_type;
69 typedef _T2 second_type;
73 #ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
74 //265. std::pair::pair() effects overly restrictive
75 pair() : first(), second() {}
77 pair() : first(_T1()), second(_T2()) {}
79 pair(const _T1& __a, const _T2& __b) : first(__a), second(__b) {}
81 template <class _U1, class _U2>
82 pair(const pair<_U1, _U2>& __p) : first(__p.first), second(__p.second) {}
85 template <class _T1, class _T2>
86 inline bool operator==(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
88 return __x.first == __y.first && __x.second == __y.second;
91 template <class _T1, class _T2>
92 inline bool operator<(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
94 return __x.first < __y.first ||
95 (!(__y.first < __x.first) && __x.second < __y.second);
98 template <class _T1, class _T2>
99 inline bool operator!=(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y) {
100 return !(__x == __y);
103 template <class _T1, class _T2>
104 inline bool operator>(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y) {
108 template <class _T1, class _T2>
109 inline bool operator<=(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y) {
113 template <class _T1, class _T2>
114 inline bool operator>=(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y) {
118 template <class _T1, class _T2>
119 #ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
120 //181. make_pair() unintended behavior
121 inline pair<_T1, _T2> make_pair(_T1 __x, _T2 __y)
123 inline pair<_T1, _T2> make_pair(const _T1& __x, const _T2& __y)
126 return pair<_T1, _T2>(__x, __y);
131 #endif /* __SGI_STL_INTERNAL_PAIR_H */