1 * Copyright (c) 1980 Regents of the University of California. 2 * All rights reserved. 3 * 4 * Redistribution and use in source and binary forms are permitted provided 5 * that: (1) source distributions retain this entire copyright notice and 6 * comment, and (2) distributions including binaries display the following 7 * acknowledgement: ``This product includes software developed by the 8 * University of California, Berkeley and its contributors'' in the 9 * documentation or other materials provided with the distribution and in 10 * all advertising materials mentioning features or use of this software. 11 * Neither the name of the University nor the names of its contributors may 12 * be used to endorse or promote products derived from this software without 13 * specific prior written permission. 14 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 15 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 16 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 17