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comparison: security/nss/lib/dbm/src/h_log2.c
security/nss/lib/dbm/src/h_log2.c
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| -1:000000000000 | 0:b0d66b628f1e |
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| 1 /*- | |
| 2 * Copyright (c) 1990, 1993, 1994 | |
| 3 * The Regents of the University of California. All rights reserved. | |
| 4 * | |
| 5 * This code is derived from software contributed to Berkeley by | |
| 6 * Margo Seltzer. | |
| 7 * | |
| 8 * Redistribution and use in source and binary forms, with or without | |
| 9 * modification, are permitted provided that the following conditions | |
| 10 * are met: | |
| 11 * 1. Redistributions of source code must retain the above copyright | |
| 12 * notice, this list of conditions and the following disclaimer. | |
| 13 * 2. Redistributions in binary form must reproduce the above copyright | |
| 14 * notice, this list of conditions and the following disclaimer in the | |
| 15 * documentation and/or other materials provided with the distribution. | |
| 16 * 3. ***REMOVED*** - see | |
| 17 * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change | |
| 18 * 4. Neither the name of the University nor the names of its contributors | |
| 19 * may be used to endorse or promote products derived from this software | |
| 20 * without specific prior written permission. | |
| 21 * | |
| 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 32 * SUCH DAMAGE. | |
| 33 */ | |
| 34 | |
| 35 #if defined(LIBC_SCCS) && !defined(lint) | |
| 36 static char sccsid[] = "@(#)hash_log2.c 8.2 (Berkeley) 5/31/94"; | |
| 37 #endif /* LIBC_SCCS and not lint */ | |
| 38 | |
| 39 #include <stdio.h> | |
| 40 #ifndef macintosh | |
| 41 #include <sys/types.h> | |
| 42 #endif | |
| 43 #include "mcom_db.h" | |
| 44 | |
| 45 uint32 __log2(uint32 num) | |
| 46 { | |
| 47 register uint32 i, limit; | |
| 48 | |
| 49 limit = 1; | |
| 50 for (i = 0; limit < num; limit = limit << 1, i++) {} | |
| 51 return (i); | |
| 52 } |
