1/*	$NetBSD$	*/
2
3/*
4 * Copyright (c) 1983, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *	This product includes software developed by the University of
18 *	California, Berkeley and its contributors.
19 * 4. Neither the name of the University nor the names of its contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36#if defined(LIBC_SCCS) && !defined(lint)
37static const char sccsid[] = "@(#)inet_makeaddr.c	8.1 (Berkeley) 6/4/93";
38#endif /* LIBC_SCCS and not lint */
39
40#include "port_before.h"
41
42#include <sys/param.h>
43#include <netinet/in.h>
44#include <arpa/inet.h>
45
46#include "port_after.h"
47
48/*%
49 * Formulate an Internet address from network + host.  Used in
50 * building addresses stored in the ifnet structure.
51 */
52struct in_addr
53inet_makeaddr(net, host)
54	u_long net, host;
55{
56	struct in_addr a;
57
58	if (net < 128U)
59		a.s_addr = (net << IN_CLASSA_NSHIFT) | (host & IN_CLASSA_HOST);
60	else if (net < 65536U)
61		a.s_addr = (net << IN_CLASSB_NSHIFT) | (host & IN_CLASSB_HOST);
62	else if (net < 16777216L)
63		a.s_addr = (net << IN_CLASSC_NSHIFT) | (host & IN_CLASSC_HOST);
64	else
65		a.s_addr = net | host;
66	a.s_addr = htonl(a.s_addr);
67	return (a);
68}
69
70/*! \file */
71