1 * Copyright (c) 1985, 1988 Regents of the University of California. 2 * All rights reserved. 3 * 4 * Redistribution and use in source and binary forms are permitted 5 * provided that this notice is preserved and that due credit is given 6 * to the University of California at Berkeley. The name of the University 7 * may not be used to endorse or promote products derived from this 8 * software without specific prior written permission. This software 9 * is provided ``as is'' without express or implied warranty. 10