2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
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11 * notice, this list of conditions and the following disclaimer in the
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13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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33 * $FreeBSD: src/lib/libc/net/inet_lnaof.c,v 1.2.6.1 2001/04/21 14:53:04 ume Exp $
34 * $DragonFly: src/lib/libc/net/inet_lnaof.c,v 1.3 2004/10/25 19:38:01 drhodus Exp $
36 * @(#)inet_lnaof.c 8.1 (Berkeley) 6/4/93
39 #include <sys/param.h>
40 #include <netinet/in.h>
41 #include <arpa/inet.h>
44 * Return the local network address portion of an
45 * internet address; handles class a/b/c network
52 in_addr_t i = ntohl(in.s_addr);
55 return ((i)&IN_CLASSA_HOST);
56 else if (IN_CLASSB(i))
57 return ((i)&IN_CLASSB_HOST);
59 return ((i)&IN_CLASSC_HOST);
63 * Weak aliases for applications that use certain private entry points,
64 * and fail to include <arpa/inet.h>.
67 __weak_reference(__inet_lnaof, inet_lnaof);