andre@3: /*-
andre@3:  * Copyright (c) 1990, 1993, 1994
andre@3:  *	The Regents of the University of California.  All rights reserved.
andre@3:  *
andre@3:  * This code is derived from software contributed to Berkeley by
andre@3:  * Margo Seltzer.
andre@3:  *
andre@3:  * Redistribution and use in source and binary forms, with or without
andre@3:  * modification, are permitted provided that the following conditions
andre@3:  * are met:
andre@3:  * 1. Redistributions of source code must retain the above copyright
andre@3:  *    notice, this list of conditions and the following disclaimer.
andre@3:  * 2. Redistributions in binary form must reproduce the above copyright
andre@3:  *    notice, this list of conditions and the following disclaimer in the
andre@3:  *    documentation and/or other materials provided with the distribution.
andre@3:  * 3. ***REMOVED*** - see 
andre@3:  *    ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change
andre@3:  * 4. Neither the name of the University nor the names of its contributors
andre@3:  *    may be used to endorse or promote products derived from this software
andre@3:  *    without specific prior written permission.
andre@3:  *
andre@3:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
andre@3:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
andre@3:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
andre@3:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
andre@3:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
andre@3:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
andre@3:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
andre@3:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
andre@3:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
andre@3:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
andre@3:  * SUCH DAMAGE.
andre@3:  */
andre@3: 
andre@3: #if defined(LIBC_SCCS) && !defined(lint)
andre@3: static char sccsid[] = "@(#)hash_log2.c	8.2 (Berkeley) 5/31/94";
andre@3: #endif /* LIBC_SCCS and not lint */
andre@3: 
andre@3: #include <stdio.h>
andre@3: #ifndef macintosh
andre@3: #include <sys/types.h>
andre@3: #endif
andre@3: #include "mcom_db.h"
andre@3: 
andre@3: uint32 __log2(uint32 num)
andre@3: {
andre@3: 	register uint32 i, limit;
andre@3: 
andre@3: 	limit = 1;
andre@3: 	for (i = 0; limit < num; limit = limit << 1, i++) {}
andre@3: 	return (i);
andre@3: }