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authorZack Weinberg <zack@gcc.gnu.org>2003-07-04 18:18:54 +0000
committerZack Weinberg <zack@gcc.gnu.org>2003-07-04 18:18:54 +0000
commit6eb95e99e7c021cbbfa1d54b1f0ea57d9d095a82 (patch)
treeb01fd4f285dcf287b34caf7b296d58a120edb505 /intl/hash-string.h
parent2f8058688a1a5bd6545e5249c013c10759b15758 (diff)
intl: New directory; see intl/ChangeLog for details.
top: * intl: New directory; see intl/ChangeLog for details. * ABOUT-NLS, config.rpath: Import from gettext 0.12.1. * Makefile.tpl: all-gcc depends on maybe-all-intl. * Makefile.in: Regenerate. config: * gettext.m4: New file - copy of gettext.m4 from binutils CVS, with added AC_ISC_POSIX macro from gcc/aclocal.m4. gcc: * ABOUT-NLS: Delete. * intl: Delete entire directory. * aclocal.m4: Include ../config/gettext.m4. Delete AC_ISC_POSIX, AM_LANGINFO_CODESET, jm_GLIBC21, AM_LC_MESSAGES, AM_PATH_PROG_WITH_TEST, AM_WITH_NLS, and AM_GNU_GETTEXT. * configure.in: Use CY_GNU_GETTEXT, not AM_GNU_GETTEXT. Remove intl/Makefile from all_outputs. * configure, config.in: Regenerate. * Makefile.in: Expunge all references to intl subdirectory. Add -I../intl to INCLUDES. * intl.h: Include libintl.h if and only if ENABLE_NLS is defined. intl: * Makefile.in: Remove unnecessary capabilities for installation, build of shared libraries, generation of distribution tarballs, etc. Fix all the places that rely on the parent directory. Don't generate libgnuintl.h from anything; do generate $(objdir)/libintl.h from libgnuintl.h if necessary. Adjust DEFS for use of config.h. * libgnuintl.h.in: Rename libgnuintl.h. * README: New file. * config.charset, ref-add.sin, ref-del.sin: Delete (unused). * COPYING.LIB-2.0, COPYING.LIB-2.1: Delete (redundant). * aclocal.m4: New; generated per instructions in gettext manual. * configure.in: New; written from scratch for this configuration. * configure, config.h.in: Generated. contrib: * gcc_update: Remove gcc/intl/plural.c from list. Add new generated files intl/plural.c, intl/configure, intl/config.h.in. From-SVN: r68928
Diffstat (limited to 'intl/hash-string.h')
-rw-r--r--intl/hash-string.h59
1 files changed, 59 insertions, 0 deletions
diff --git a/intl/hash-string.h b/intl/hash-string.h
new file mode 100644
index 00000000000..b267a87788f
--- /dev/null
+++ b/intl/hash-string.h
@@ -0,0 +1,59 @@
+/* Description of GNU message catalog format: string hashing function.
+ Copyright (C) 1995, 1997, 1998, 2000, 2001 Free Software Foundation, Inc.
+
+ This program 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, or (at your option)
+ any later version.
+
+ This program 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 this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+ USA. */
+
+/* @@ end of prolog @@ */
+
+#ifndef PARAMS
+# if __STDC__ || defined __GNUC__ || defined __SUNPRO_C || defined __cplusplus || __PROTOTYPES
+# define PARAMS(Args) Args
+# else
+# define PARAMS(Args) ()
+# endif
+#endif
+
+/* We assume to have `unsigned long int' 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 unsigned long int hash_string PARAMS ((const char *__str_param));
+
+static inline unsigned long int
+hash_string (str_param)
+ const char *str_param;
+{
+ unsigned long int hval, g;
+ const char *str = str_param;
+
+ /* Compute the hash value for the given string. */
+ hval = 0;
+ while (*str != '\0')
+ {
+ hval <<= 4;
+ hval += (unsigned long int) *str++;
+ g = hval & ((unsigned long int) 0xf << (HASHWORDBITS - 4));
+ if (g != 0)
+ {
+ hval ^= g >> (HASHWORDBITS - 8);
+ hval ^= g;
+ }
+ }
+ return hval;
+}