/*
 * tools/lib/hash.h
 *
 * Copyright (C) 2001 Sistina Software
 *
 * This LVM 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.
 *
 * This LVM 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 this LVM library; if not, write to the Free
 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
 * MA 02111-1307, USA
 */

#ifndef HASH_H
#define HASH_H

extern unsigned char hash_nums[256];

static inline unsigned hash(const char *str)
{
	unsigned long int h = 0, g;
	while (*str) {
		h <<= 4;
		h += hash_nums[(int) *str++];
		g = h & ((unsigned long) 0xf << 16u);
		if (g) {
			h ^= g >> 16u;
			h ^= g >> 5u;
		}
	}
	return h;
};

#endif