mirror of
https://github.com/reactos/reactos.git
synced 2024-09-18 08:42:34 +00:00
147 lines
4 KiB
C++
147 lines
4 KiB
C++
/*
|
|
* Copyright (c) 1996-1998
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
/* NOTE: This is an internal header file, included by other STL headers.
|
|
* You should not attempt to use it directly.
|
|
*/
|
|
|
|
#ifndef _STLP_HASH_FUN_H
|
|
#define _STLP_HASH_FUN_H
|
|
|
|
#ifndef _STLP_INTERNAL_CSTDDEF
|
|
# include <stl/_cstddef.h>
|
|
#endif
|
|
|
|
_STLP_BEGIN_NAMESPACE
|
|
|
|
template <class _Key> struct hash { };
|
|
|
|
_STLP_MOVE_TO_PRIV_NAMESPACE
|
|
|
|
inline size_t __stl_hash_string(const char* __s) {
|
|
_STLP_FIX_LITERAL_BUG(__s)
|
|
unsigned long __h = 0;
|
|
for ( ; *__s; ++__s)
|
|
__h = 5*__h + *__s;
|
|
|
|
return size_t(__h);
|
|
}
|
|
|
|
_STLP_MOVE_TO_STD_NAMESPACE
|
|
|
|
_STLP_TEMPLATE_NULL
|
|
struct hash<char*> {
|
|
size_t operator()(const char* __s) const {
|
|
_STLP_FIX_LITERAL_BUG(__s)
|
|
return _STLP_PRIV __stl_hash_string(__s);
|
|
}
|
|
};
|
|
|
|
_STLP_TEMPLATE_NULL
|
|
struct hash<const char*> {
|
|
size_t operator()(const char* __s) const {
|
|
_STLP_FIX_LITERAL_BUG(__s)
|
|
return _STLP_PRIV __stl_hash_string(__s);
|
|
}
|
|
};
|
|
|
|
_STLP_TEMPLATE_NULL struct hash<char> {
|
|
size_t operator()(char __x) const { return __x; }
|
|
};
|
|
_STLP_TEMPLATE_NULL struct hash<unsigned char> {
|
|
size_t operator()(unsigned char __x) const { return __x; }
|
|
};
|
|
#if !defined (_STLP_NO_SIGNED_BUILTINS)
|
|
_STLP_TEMPLATE_NULL struct hash<signed char> {
|
|
size_t operator()(unsigned char __x) const { return __x; }
|
|
};
|
|
#endif
|
|
_STLP_TEMPLATE_NULL struct hash<short> {
|
|
size_t operator()(short __x) const { return __x; }
|
|
};
|
|
_STLP_TEMPLATE_NULL struct hash<unsigned short> {
|
|
size_t operator()(unsigned short __x) const { return __x; }
|
|
};
|
|
_STLP_TEMPLATE_NULL struct hash<int> {
|
|
size_t operator()(int __x) const { return __x; }
|
|
};
|
|
|
|
#if !defined (_STLP_MSVC) || (_STLP_MSVC < 1300) || defined (_WIN64)
|
|
_STLP_TEMPLATE_NULL struct hash<unsigned int> {
|
|
size_t operator()(unsigned int __x) const { return __x; }
|
|
};
|
|
#else
|
|
/* MSVC .Net since 2002 has a 64 bits portability warning feature. typedef
|
|
* like size_t are tagged as potential 64 bits variables making them different from
|
|
* unsigned int. To avoid the warning when a hash container is instanciated with
|
|
* the size_t key we prefer to grant the size_t specialization rather than the
|
|
* unsigned int one.
|
|
*/
|
|
_STLP_TEMPLATE_NULL struct hash<size_t> {
|
|
size_t operator()(size_t __x) const { return __x; }
|
|
};
|
|
#endif
|
|
|
|
_STLP_TEMPLATE_NULL struct hash<long> {
|
|
size_t operator()(long __x) const { return __x; }
|
|
};
|
|
_STLP_TEMPLATE_NULL struct hash<unsigned long> {
|
|
size_t operator()(unsigned long __x) const { return __x; }
|
|
};
|
|
|
|
#if defined (_STLP_LONG_LONG)
|
|
_STLP_TEMPLATE_NULL struct hash<_STLP_LONG_LONG> {
|
|
size_t operator()(_STLP_LONG_LONG x) const { return (size_t)x; }
|
|
};
|
|
_STLP_TEMPLATE_NULL struct hash<unsigned _STLP_LONG_LONG> {
|
|
size_t operator()(unsigned _STLP_LONG_LONG x) const { return (size_t)x; }
|
|
};
|
|
#endif
|
|
|
|
_STLP_TEMPLATE_NULL
|
|
struct hash<void *>
|
|
{
|
|
union __vp {
|
|
size_t s;
|
|
void *p;
|
|
};
|
|
|
|
size_t operator()(void *__x) const
|
|
{
|
|
__vp vp;
|
|
vp.p = __x;
|
|
return vp.s;
|
|
}
|
|
};
|
|
|
|
_STLP_END_NAMESPACE
|
|
|
|
#endif /* _STLP_HASH_FUN_H */
|
|
|
|
// Local Variables:
|
|
// mode:C++
|
|
// End:
|