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authorRoland McGrath <roland@gnu.org>1996-07-29 03:49:00 +0000
committerRoland McGrath <roland@gnu.org>1996-07-29 03:49:00 +0000
commitce7a5ef4bc04ee3ca9d2f42377ca6593d8492a52 (patch)
treeefbd26a9837de025fc405475655d24d83761cfee /locale/strlen-hash.h
parentcddcfecfd1a8f91ee1da1c0147a4f07aee1846a0 (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.h51
1 files changed, 51 insertions, 0 deletions
diff --git a/locale/strlen-hash.h b/locale/strlen-hash.h
new file mode 100644
index 0000000..dba56df
--- /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;
+}