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authorPatrick McHardy <kaber@trash.net>2011-07-22 16:44:20 +0200
committerPatrick McHardy <kaber@trash.net>2011-07-22 16:44:20 +0200
commit2b9be10b177024bd663bd5fce19ea0fb76260c27 (patch)
treef6c296350683ee94c120213bef57e14fd153b23a /utils/db1-ast/hash/hash_log2.c
parent916e420bf0c8db7a8cb1f60557cd2807652142cf (diff)
parent28da2a199d7e1624ac56ccb27d3671117f4e2717 (diff)
Merge branch 'master' of 192.168.0.100:/repos/git/asteriskHEADmaster
Diffstat (limited to 'utils/db1-ast/hash/hash_log2.c')
-rw-r--r--utils/db1-ast/hash/hash_log2.c56
1 files changed, 56 insertions, 0 deletions
diff --git a/utils/db1-ast/hash/hash_log2.c b/utils/db1-ast/hash/hash_log2.c
new file mode 100644
index 000000000..b86655d47
--- /dev/null
+++ b/utils/db1-ast/hash/hash_log2.c
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+/*-
+ * 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);
+}