view lib/hash-pjw-bare.h @ 17364:7524d97ae56f

stdalign: port to stricter ISO C11 ISO C11 says that _Alignof's operand must be a parenthesized type. Problem reported by Eli Zaretskii in <http://lists.gnu.org/archive/html/emacs-devel/2013-03/msg00960.html>. * doc/posix-headers/stdalign.texi (stdalign.h): Document this. * m4/stdalign.m4 (gl_STDALIGN_H): Don't use _Alignof (expr).
author Paul Eggert <eggert@cs.ucla.edu>
date Fri, 29 Mar 2013 19:47:13 -0700
parents e542fd46ad6f
children 344018b6e5d7
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/* hash-pjw-bare.h -- declaration for a simple hash function
   Copyright (C) 2012-2013 Free Software Foundation, Inc.

   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 3 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#include <stddef.h>

/* Compute a hash code for a buffer starting at X and of size N,
   and return the hash code.  Note that unlike hash_pjw(), it does not
   return it modulo a table size.
   The result is platform dependent: it depends on the size of the 'size_t'
   type and on the signedness of the 'char' type.  */
extern size_t hash_pjw_bare (const void *x, size_t n) _GL_ATTRIBUTE_PURE;