1/*
2 *
3 * Copyright (c) 1994
4 * Hewlett-Packard Company
5 *
6 * Permission to use, copy, modify, distribute and sell this software
7 * and its documentation for any purpose is hereby granted without fee,
8 * provided that the above copyright notice appear in all copies and
9 * that both that copyright notice and this permission notice appear
10 * in supporting documentation.  Hewlett-Packard Company makes no
11 * representations about the suitability of this software for any
12 * purpose.  It is provided "as is" without express or implied warranty.
13 *
14 *
15 * Copyright (c) 1996,1997
16 * Silicon Graphics Computer Systems, Inc.
17 *
18 * Permission to use, copy, modify, distribute and sell this software
19 * and its documentation for any purpose is hereby granted without fee,
20 * provided that the above copyright notice appear in all copies and
21 * that both that copyright notice and this permission notice appear
22 * in supporting documentation.  Silicon Graphics makes no
23 * representations about the suitability of this software for any
24 * purpose.  It is provided "as is" without express or implied warranty.
25 */
26
27/* NOTE: This is an internal header file, included by other STL headers.
28 *   You should not attempt to use it directly.
29 */
30
31#ifndef __SGI_STL_INTERNAL_PAIR_H
32#define __SGI_STL_INTERNAL_PAIR_H
33
34__STL_BEGIN_NAMESPACE
35
36template <class _T1, class _T2>
37struct pair {
38  typedef _T1 first_type;
39  typedef _T2 second_type;
40
41  _T1 first;
42  _T2 second;
43  pair() : first(_T1()), second(_T2()) {}
44  pair(const _T1& __a, const _T2& __b) : first(__a), second(__b) {}
45
46#ifdef __STL_MEMBER_TEMPLATES
47  template <class _U1, class _U2>
48  pair(const pair<_U1, _U2>& __p) : first(__p.first), second(__p.second) {}
49#endif
50};
51
52template <class _T1, class _T2>
53inline bool operator==(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
54{
55  return __x.first == __y.first && __x.second == __y.second;
56}
57
58template <class _T1, class _T2>
59inline bool operator<(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
60{
61  return __x.first < __y.first ||
62         (!(__y.first < __x.first) && __x.second < __y.second);
63}
64
65template <class _T1, class _T2>
66inline pair<_T1, _T2> make_pair(const _T1& __x, const _T2& __y)
67{
68  return pair<_T1, _T2>(__x, __y);
69}
70
71__STL_END_NAMESPACE
72
73#endif /* __SGI_STL_INTERNAL_PAIR_H */
74
75// Local Variables:
76// mode:C++
77// End:
78