Sync move-if-change from Gnulib, updating copyright

[thirdparty/glibc.git] / intl / hash-string.h

diff --git a/intl/hash-string.h b/intl/hash-string.h
index ef1f448d8654d194605a7af8320cd152d5b58508..98b71134c3714ebe4e723a5e29762809ccddbfd0 100644 (file)
--- a/intl/hash-string.h
+++ b/intl/hash-string.h
@@ -1,62 +1,35 @@
-/* hash-string - Implements a string hashing function.
-   Copyright (C) 1995 Free Software Foundation, Inc.
+/* Description of GNU message catalog format: string hashing function.
+   Copyright (C) 1995-2022 Free Software Foundation, Inc.
 
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
+   This program 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.
 
-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 General Public License for more details.
+   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 Lesser General Public License for more details.
 
-You should have received a copy of the GNU 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.  */
-
-#ifdef HAVE_VALUES_H
-# include <values.h>
-#endif
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* @@ end of prolog @@ */
 
-#ifndef PARAMS
-# if __STDC__
-#  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
 
 
+#ifndef _LIBC
+# ifdef IN_LIBINTL
+#  define __hash_string libintl_hash_string
+# else
+#  define __hash_string hash_string
+# endif
+#endif
+
 /* 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 hash_string PARAMS ((const char *__str_param));
-
-static inline unsigned long
-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) *str++;
-      g = hval & ((unsigned long) 0xf << (HASHWORDBITS - 4));
-      if (g != 0)
-       {
-         hval ^= g >> (HASHWORDBITS - 8);
-         hval ^= g;
-       }
-    }
-  return hval;
-}
+extern unsigned long int __hash_string (const char *str_param)
+     attribute_hidden;