0393dfd6c2
* locale/programs/ld-collate.c (collate_finish): Use error_at_line instead of error_with_loc. * locale/weight.h: Use u_int32_t instead of u32_t. * string/strxfrm.c: Likewise. * string/strxfrm.c: Find weight.h in ../locale; don't #include "localeinfo.h". * string/strcoll.c: Likewise. * locale/programs/simple-hash.c, locale/programs/simple-hash.h, locale/programs/xmalloc.c, locale/programs/xstrdup.c: Helper functions for locale related programs. locale/programs/charmap.c, locale/programs/charset.c, locale/programs/charset.h, locale/programs/config.h, locale/programs/ctypedump.c, locale/programs/ld-collate.c, locale/programs/ld-ctype.c, locale/programs/ld-messages.c, locale/programs/ld-monetary.c, locale/programs/ld-numeric.c, locale/programs/ld-time.c, locale/programs/linereader.c, locale/programs/linereader.h, locale/programs/locale.c, locale/programs/localedef.c, locale/programs/locales.h, locale/programs/locfile-kw.gperf, locale/programs/locfile-kw.h, locale/programs/locfile-token.h, locale/programs/locfile.c, locale/programs/locfile.h, locale/programs/stringtrans.c, locale/programs/stringtrans.h: Implementation of locale related programs.
67 lines
1.9 KiB
C
67 lines
1.9 KiB
C
/* hash-string - Implements a string hashing function.
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Copyright (C) 1995 Free Software Foundation, Inc.
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This file is part of the GNU C Library. Its master source is NOT part of
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the C library, however. The master source lives in /gd/gnu/lib.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#ifdef HAVE_VALUES_H
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# include <values.h>
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#endif
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/* @@ end of prolog @@ */
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#ifndef PARAMS
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# if __STDC__
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# define PARAMS(Args) Args
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# else
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# define PARAMS(Args) ()
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# endif
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#endif
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/* We assume to have `unsigned long int' value with at least 32 bits. */
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#define HASHWORDBITS 32
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/* Defines the so called `hashpjw' function by P.J. Weinberger
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[see Aho/Sethi/Ullman, COMPILERS: Principles, Techniques and Tools,
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1986, 1987 Bell Telephone Laboratories, Inc.] */
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static unsigned long hash_string PARAMS ((const char *__str_param));
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static inline unsigned long
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hash_string (str_param)
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const char *str_param;
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{
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unsigned long int hval, g;
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const char *str = str_param;
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/* Compute the hash value for the given string. */
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hval = 0;
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while (*str != '\0')
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{
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hval <<= 4;
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hval += (unsigned long) *str++;
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g = hval & ((unsigned long) 0xf << (HASHWORDBITS - 4));
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if (g != 0)
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{
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hval ^= g >> (HASHWORDBITS - 8);
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hval ^= g;
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}
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}
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return hval;
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}
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