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OS/2 Shareware BBS: 10 Tools
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stlpt453.zip
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STLport-4.5.3
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stlport
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stl
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_hash_fun.h
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C/C++ Source or Header
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2001-01-26
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3KB
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108 lines
/*
* 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_CSTDDEF
# include <cstddef>
# endif
_STLP_BEGIN_NAMESPACE
template <class _Key> struct hash { };
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_TEMPLATE_NULL struct hash<char*>
{
size_t operator()(const char* __s) const { _STLP_FIX_LITERAL_BUG(__s) return __stl_hash_string(__s); }
};
_STLP_TEMPLATE_NULL struct hash<const char*>
{
size_t operator()(const char* __s) const { _STLP_FIX_LITERAL_BUG(__s) return __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; }
};
#ifndef _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; }
};
_STLP_TEMPLATE_NULL struct hash<unsigned int> {
size_t operator()(unsigned int __x) const { return __x; }
};
_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()(long x) const { return x; }
};
_STLP_TEMPLATE_NULL struct hash<unsigned _STLP_LONG_LONG> {
size_t operator()(unsigned long x) const { return x; }
};
# endif
_STLP_END_NAMESPACE
#endif /* _STLP_HASH_FUN_H */
// Local Variables:
// mode:C++
// End: