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author | Lorry Tar Creator <lorry-tar-importer@lorry> | 2015-11-09 05:12:59 +0000 |
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committer | Lorry Tar Creator <lorry-tar-importer@lorry> | 2015-11-09 05:12:59 +0000 |
commit | 26c046fbc57d53136b4fb3b5e0d18298318125d4 (patch) | |
tree | 0397d2184e7fba8a51f7fb9a6fc01a82d0748411 /nss/lib/dbm/src/h_log2.c | |
parent | c416b91e36567df4ec765a495c5a6ca6a1853f58 (diff) | |
download | nss-26c046fbc57d53136b4fb3b5e0d18298318125d4.tar.gz |
nss-3.21nss-3.21
Diffstat (limited to 'nss/lib/dbm/src/h_log2.c')
-rw-r--r-- | nss/lib/dbm/src/h_log2.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/nss/lib/dbm/src/h_log2.c b/nss/lib/dbm/src/h_log2.c new file mode 100644 index 0000000..9c8ea06 --- /dev/null +++ b/nss/lib/dbm/src/h_log2.c @@ -0,0 +1,52 @@ +/*- + * Copyright (c) 1990, 1993, 1994 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Margo Seltzer. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. ***REMOVED*** - see + * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)hash_log2.c 8.2 (Berkeley) 5/31/94"; +#endif /* LIBC_SCCS and not lint */ + +#include <stdio.h> +#ifndef macintosh +#include <sys/types.h> +#endif +#include "mcom_db.h" + +uint32 __log2(uint32 num) +{ + register uint32 i, limit; + + limit = 1; + for (i = 0; limit < num; limit = limit << 1, i++) {} + return (i); +} |