glibc/locale/hashval.h

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Update. 2002-04-18 Ulrich Drepper <drepper@redhat.com> * locale/programs/locfile.c (to_archive): New variable. To collect data which has to be added to the locale archive. (write_all_categories): Take new third parameter with locale name. Unless no_archive flag set add new locale data to the archive (write_locale_data): Unless no-archive flag set store generated data in to_archive data structure instead of generation output file. Add new parameter with locale category index. * locale/programs/locfile.h: Add new parameters in declaractions of write_all_categories and write_locale_data. * locale/programs/localedef.c: Recognize --no-archive, --list-archive, --add-to-archive, and --delete-from-archive options. Pass extra parameter to write_all_categories. * locale/programs/localedef.h: Add prototypes for functions in locarchive.c. * locale/locarchive.h: New file. * locale/programs/locarchive.c: New file. * locale/Makefile (distribute): Add programs/locarchive.c and locarchive.h. (localedef-modules): Add md5 and locarchive. Add vpath to crypt subdir for md5.c. * locale/programs/ld-address.c: Pass locale category ID as new second parameter to write_locale_data. * locale/programs/ld-collate.c: Likewise. * locale/programs/ld-ctype.c: Likewise. * locale/programs/ld-identification.c: Likewise. * locale/programs/ld-measurement.c: Likewise. * locale/programs/ld-messages.c: Likewise. * locale/programs/ld-monetary.c: Likewise. * locale/programs/ld-name.c: Likewise. * locale/programs/ld-numeric.c: Likewise. * locale/programs/ld-paper.c: Likewise. * locale/programs/ld-telephone.c: Likewise. * locale/programs/ld-time.c: Likewise. * locale/simple-hash.c: Move compute_hashval function from here... * locale/hashval.h: ...to here. New file. * locale/simple-hash.h: Add prototype for compute_hashval. * include/libintl.h: Minor cleanups. * elf/reldep7.c: New file. * elf/reldep7mod1.c: New file. * elf/reldep7mod2.c: New file. * elf/Makefile: Add rules to build and run reldep7.
2002-04-18 08:08:23 +00:00
/* Implement simple hashing table with string based keys.
Copyright (C) 1994-1997, 2000, 2001, 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, October 1994.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
unsigned long
compute_hashval (key, keylen)
const void *key;
size_t keylen;
{
size_t cnt;
unsigned long int hval;
/* Compute the hash value for the given string. The algorithm
is taken from [Aho,Sethi,Ullman], modified to reduce the number of
collisions for short strings with very varied bit patterns.
See http://www.clisp.org/haible/hashfunc.html. */
cnt = 0;
hval = keylen;
while (cnt < keylen)
{
hval = (hval << 9) | (hval >> (LONGBITS - 9));
hval += (unsigned long int) *(((char *) key) + cnt++);
}
return hval != 0 ? hval : ~((unsigned long) 0);
}