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glibc  2.9
hash-string.h
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00001 /* Implements a string hashing function.
00002    Copyright (C) 1995, 1997, 1998, 2000, 2003 Free Software Foundation, Inc.
00003    This file is part of the GNU C Library.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 /* @@ end of prolog @@ */
00021 
00022 #ifndef PARAMS
00023 # if __STDC__ || defined __GNUC__ || defined __SUNPRO_C || defined __cplusplus || __PROTOTYPES
00024 #  define PARAMS(Args) Args
00025 # else
00026 #  define PARAMS(Args) ()
00027 # endif
00028 #endif
00029 
00030 /* We assume to have `unsigned long int' value with at least 32 bits.  */
00031 #define HASHWORDBITS 32
00032 
00033 
00034 /* Defines the so called `hashpjw' function by P.J. Weinberger
00035    [see Aho/Sethi/Ullman, COMPILERS: Principles, Techniques and Tools,
00036    1986, 1987 Bell Telephone Laboratories, Inc.]  */
00037 extern unsigned long int __hash_string PARAMS ((const char *__str_param))
00038      attribute_hidden;