summaryrefslogtreecommitdiffstats
path: root/Source/kwsys/hash_fun.hxx.in
blob: 8626c2aa2a19712bea58e63b6e5b781ccd372c22 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
   file Copyright.txt or https://cmake.org/licensing#kwsys for details.  */
/*
 * Copyright (c) 1996
 * Silicon Graphics Computer Systems, Inc.
 *
 * Permission to use, copy, modify, distribute and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.  Silicon Graphics makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 *
 *
 * Copyright (c) 1994
 * Hewlett-Packard Company
 *
 * Permission to use, copy, modify, distribute and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.  Hewlett-Packard Company makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 *
 */
#ifndef @KWSYS_NAMESPACE@_hash_fun_hxx
#define @KWSYS_NAMESPACE@_hash_fun_hxx

#include <@KWSYS_NAMESPACE@/Configure.hxx>

#include <stddef.h> // size_t
#include <string>

namespace @KWSYS_NAMESPACE@ {

template <class _Key>
struct hash
{
};

inline size_t _stl_hash_string(const char* __s)
{
  unsigned long __h = 0;
  for (; *__s; ++__s)
    __h = 5 * __h + *__s;

  return size_t(__h);
}

template <>
struct hash<char*>
{
  size_t operator()(const char* __s) const { return _stl_hash_string(__s); }
};

template <>
struct hash<const char*>
{
  size_t operator()(const char* __s) const { return _stl_hash_string(__s); }
};

template <>
struct hash<std::string>
{
  size_t operator()(const std::string& __s) const
  {
    return _stl_hash_string(__s.c_str());
  }
};

#if !defined(__BORLANDC__)
template <>
struct hash<const std::string>
{
  size_t operator()(const std::string& __s) const
  {
    return _stl_hash_string(__s.c_str());
  }
};
#endif

template <>
struct hash<char>
{
  size_t operator()(char __x) const { return __x; }
};

template <>
struct hash<unsigned char>
{
  size_t operator()(unsigned char __x) const { return __x; }
};

template <>
struct hash<signed char>
{
  size_t operator()(unsigned char __x) const { return __x; }
};

template <>
struct hash<short>
{
  size_t operator()(short __x) const { return __x; }
};

template <>
struct hash<unsigned short>
{
  size_t operator()(unsigned short __x) const { return __x; }
};

template <>
struct hash<int>
{
  size_t operator()(int __x) const { return __x; }
};

template <>
struct hash<unsigned int>
{
  size_t operator()(unsigned int __x) const { return __x; }
};

template <>
struct hash<long>
{
  size_t operator()(long __x) const { return __x; }
};

template <>
struct hash<unsigned long>
{
  size_t operator()(unsigned long __x) const { return __x; }
};

// use long long or __int64
#if @KWSYS_USE_LONG_LONG@
template <>
struct hash<long long>
{
  size_t operator()(long long __x) const { return __x; }
};

template <>
struct hash<unsigned long long>
{
  size_t operator()(unsigned long long __x) const { return __x; }
};
#elif @KWSYS_USE___INT64@
template <>
struct hash<__int64>
{
  size_t operator()(__int64 __x) const { return __x; }
};
template <>
struct hash<unsigned __int64>
{
  size_t operator()(unsigned __int64 __x) const { return __x; }
};
#endif // use long long or __int64

} // namespace @KWSYS_NAMESPACE@

#endif