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author | Roland McGrath <roland@gnu.org> | 1996-07-29 03:49:00 +0000 |
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committer | Roland McGrath <roland@gnu.org> | 1996-07-29 03:49:00 +0000 |
commit | ce7a5ef4bc04ee3ca9d2f42377ca6593d8492a52 (patch) | |
tree | efbd26a9837de025fc405475655d24d83761cfee /locale/strlen-hash.h | |
parent | cddcfecfd1a8f91ee1da1c0147a4f07aee1846a0 (diff) | |
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Sun Jul 28 23:46:14 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* time/strftime.c (strftime: do_number): Initialize PRINTED to
MAXDIGITS in case P is null and so sprintf is never actually called.
Mon Jul 29 02:46:23 1996 Ulrich Drepper <drepper@cygnus.com>
Add support for the to-be-written internationalized regexp.
This code must be able to use collation symbols and collation
equivalent classes.
* locale/C-collate.c (_nl_C_LC_COLLATE_symbol_hash,
_nl_C_LC_COLLATE_symbol_strings, _nl_C_LC_COLLATE_symbol_classes):
New global variables for collation classes.
* locale/categories.def: Add new descriptions for collation symbols
and collation classes.
* locale/langinfo.h: Add constants for collation symbols and
collation classes.
* locale/lc-collate.c: Add new global variables for collation symbols
and collation classes.
(_nl_postload_collate): Initialize new variables.
* locale/programs/ld-collate.c: Add code to emit tables for
collation symbols and collation classes.
* locale/programs/locales.h: Change prototype for `collate_output'.
* locale/programs/locfile.c (write_all_categories): Call
`collate_output' with new argument.
* locale/localeinfo.h: Add declaration for new global vars.
(union locale_data_value): New member wstr for `wchar_t' strings.
* locale/programs/locale-spec.c: Handle `collate-classes'
keyword and print information about available collation classes.
* locale/strlen-hash.h: New file. Simple hashing function which
takes a string with known length.
* locale/Makefile (distribute): Add strlen-hash.h.
(locale-modules): New var. Additional files for `locale' program.
* locale/C-ctype.c: Rewrite to avoid using string for giving values
which are of type `u_int32_t'.
Correct entry for EOF in toupper and tolower tables.
* locale/loadlocale.c (_nl_load_locale): Add cast to prevent
warning.
* locale/programs/ld-ctype.c (ctype_output): Add code to make
sure that all tables in binary file are words aligned.
* locale/programs/locfile.c (write_locale_data): Correct handling
of LC_MESSAGES locale. Create directory if necessary.
* locale/setlocale.c (setlocale): Add cast to avoid warning.
* string/string.h: Add prototype for `__strndup'.
Wed Jul 24 19:10:00 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* wcsmbs/mbrtowc.c: Remove unused variable.
Sun Jul 28 22:40:25 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* sysdeps/unix/sysv/linux/configure.in (LIBC_LINUX_VERSION): Update to
2.0.10; some problems were reported with an earlier version, and this
one is known to work.
* sysdeps/generic/dl-sysdep.c (__libc_enable_secure): New variable.
* sysdeps/mach/hurd/dl-sysdep.c: Likewise.
Diffstat (limited to 'locale/strlen-hash.h')
-rw-r--r-- | locale/strlen-hash.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/locale/strlen-hash.h b/locale/strlen-hash.h new file mode 100644 index 0000000000..dba56dff21 --- /dev/null +++ b/locale/strlen-hash.h @@ -0,0 +1,51 @@ +/* strlen-hash - Implements hashing function for string with known length. +Copyright (C) 1996 Free Software Foundation, Inc. +Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ + +#include <sys/types.h> + +/* We assume to have `size_t' value with at least 32 bits. */ +#define HASHWORDBITS 32 + + +/* Defines the so called `hashpjw' function by P.J. Weinberger + [see Aho/Sethi/Ullman, COMPILERS: Principles, Techniques and Tools, + 1986, 1987 Bell Telephone Laboratories, Inc.] */ +static size_t hash_string (const char *__str_param, size_t __len); + +static inline size_t +hash_string (const char *str_param, size_t len) +{ + size_t hval, g; + const char *end_str = str_param + len; + + /* Compute the hash value for the given string. */ + hval = len; + while (str_param != end_str) + { + hval <<= 4; + hval += (size_t) *str_param++; + g = hval & ((size_t) 0xf << (HASHWORDBITS - 4)); + if (g != 0) + { + hval ^= g >> (HASHWORDBITS - 8); + hval ^= g; + } + } + return hval; +} |