58 lines
1.5 KiB
C
Executable File
58 lines
1.5 KiB
C
Executable File
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
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/* All Rights Reserved */
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/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T */
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/* The copyright notice above does not evidence any */
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/* actual or intended publication of such source code. */
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#ident "@(#)inet_mkaddr.c 1.5 93/04/12 SMI" /* SVr4.0 1.1 */
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/*
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* +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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* PROPRIETARY NOTICE (Combined)
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*
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* This source code is unpublished proprietary information
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* constituting, or derived under license from AT&T's UNIX(r) System V.
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* In addition, portions of such source code were derived from Berkeley
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* 4.3 BSD under license from the Regents of the University of
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* California.
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*
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*
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*
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* Copyright Notice
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*
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* Notice of copyright on this source code product does not indicate
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* publication.
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*
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* (c) 1986,1987,1988.1989 Sun Microsystems, Inc
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* (c) 1983,1984,1985,1986,1987,1988,1989 AT&T.
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* All rights reserved.
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*
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*/
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#include <sys/types.h>
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#include <netinet/in.h>
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/*
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* Formulate an Internet address from network + host. Used in
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* building addresses stored in the ifnet structure.
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*/
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struct in_addr
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inet_makeaddr(net, host)
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u_long net, host;
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{
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u_long addr;
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if (net < 128)
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addr = (net << IN_CLASSA_NSHIFT) | (host & IN_CLASSA_HOST);
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else if (net < 65536)
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addr = (net << IN_CLASSB_NSHIFT) | (host & IN_CLASSB_HOST);
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else if (net < 16777216L)
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addr = (net << IN_CLASSC_NSHIFT) | (host & IN_CLASSC_HOST);
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else
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addr = net | host;
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addr = htonl(addr);
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return (*(struct in_addr *)&addr);
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}
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