diff options
author | russell <russell@f38db490-d61c-443f-a65b-d21fe96a405b> | 2009-01-16 15:51:43 +0000 |
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committer | russell <russell@f38db490-d61c-443f-a65b-d21fe96a405b> | 2009-01-16 15:51:43 +0000 |
commit | 52acc4c45786fc04da9536c2801eb2b483cc2009 (patch) | |
tree | 3e0b68760b7b6d49c72de4fd5b747ed4d5726ad3 /main/db1-ast/hash/hash_log2.c | |
parent | 5d9d64e584ec5220835eb10a124b555d449fa3d3 (diff) | |
parent | caebf8461f9849f484eb5bbd649880e457c20e31 (diff) |
Creating tag for the release of asterisk-1.4.23-rc4
git-svn-id: http://svn.digium.com/svn/asterisk/tags/1.4.23-rc4@168755 f38db490-d61c-443f-a65b-d21fe96a405b
Diffstat (limited to 'main/db1-ast/hash/hash_log2.c')
-rw-r--r-- | main/db1-ast/hash/hash_log2.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/main/db1-ast/hash/hash_log2.c b/main/db1-ast/hash/hash_log2.c new file mode 100644 index 000000000..b86655d47 --- /dev/null +++ b/main/db1-ast/hash/hash_log2.c @@ -0,0 +1,56 @@ +/*- + * 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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 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 <sys/types.h> + +#include "../include/db.h" + +u_int32_t __hash_log2 __P((u_int32_t)); + +u_int32_t +__hash_log2(num) + u_int32_t num; +{ + register u_int32_t i, limit; + + limit = 1; + for (i = 0; limit < num; limit = limit << 1, i++); + return (i); +} |