diff options
Diffstat (limited to 'contrib/libstdc++/stl/stl_hash_fun.h')
-rw-r--r-- | contrib/libstdc++/stl/stl_hash_fun.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/contrib/libstdc++/stl/stl_hash_fun.h b/contrib/libstdc++/stl/stl_hash_fun.h new file mode 100644 index 0000000..3afa9dc --- /dev/null +++ b/contrib/libstdc++/stl/stl_hash_fun.h @@ -0,0 +1,93 @@ +/* + * 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. + * + */ + +/* NOTE: This is an internal header file, included by other STL headers. + * You should not attempt to use it directly. + */ + +#ifndef __SGI_STL_HASH_FUN_H +#define __SGI_STL_HASH_FUN_H + +#include <stddef.h> + +__STL_BEGIN_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); +} + +__STL_TEMPLATE_NULL struct hash<char*> +{ + size_t operator()(const char* s) const { return __stl_hash_string(s); } +}; + +__STL_TEMPLATE_NULL struct hash<const char*> +{ + size_t operator()(const char* s) const { return __stl_hash_string(s); } +}; + +__STL_TEMPLATE_NULL struct hash<char> { + size_t operator()(char x) const { return x; } +}; +__STL_TEMPLATE_NULL struct hash<unsigned char> { + size_t operator()(unsigned char x) const { return x; } +}; +__STL_TEMPLATE_NULL struct hash<signed char> { + size_t operator()(unsigned char x) const { return x; } +}; +__STL_TEMPLATE_NULL struct hash<short> { + size_t operator()(short x) const { return x; } +}; +__STL_TEMPLATE_NULL struct hash<unsigned short> { + size_t operator()(unsigned short x) const { return x; } +}; +__STL_TEMPLATE_NULL struct hash<int> { + size_t operator()(int x) const { return x; } +}; +__STL_TEMPLATE_NULL struct hash<unsigned int> { + size_t operator()(unsigned int x) const { return x; } +}; +__STL_TEMPLATE_NULL struct hash<long> { + size_t operator()(long x) const { return x; } +}; +__STL_TEMPLATE_NULL struct hash<unsigned long> { + size_t operator()(unsigned long x) const { return x; } +}; + +__STL_END_NAMESPACE + +#endif /* __SGI_STL_HASH_FUN_H */ + +// Local Variables: +// mode:C++ +// End: |