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+/* hash-pjw.h -- declaration for a simple hash function
+ Copyright (C) 2001, 2003, 2009-2016 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 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#include <stddef.h>
+
+/* Compute a hash code for a NUL-terminated string starting at X,
+ and return the hash code modulo TABLESIZE.
+ 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 (void const *x, size_t tablesize) _GL_ATTRIBUTE_PURE;