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Sprite 1984 - 1993
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Sprite 1984 - 1993.iso
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inet_makeaddr.c
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C/C++ Source or Header
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1988-06-20
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1KB
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39 lines
/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that this notice is preserved and that due credit is given
* to the University of California at Berkeley. The name of the University
* may not be used to endorse or promote products derived from this
* software without specific prior written permission. This software
* is provided ``as is'' without express or implied warranty.
*/
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)inet_makeaddr.c 5.2 (Berkeley) 3/7/88";
#endif /* LIBC_SCCS and not lint */
#include <sys/types.h>
#include <netinet/in.h>
/*
* Formulate an Internet address from network + host. Used in
* building addresses stored in the ifnet structure.
*/
struct in_addr
inet_makeaddr(net, host)
int net, host;
{
u_long addr;
if (net < 128)
addr = (net << IN_CLASSA_NSHIFT) | (host & IN_CLASSA_HOST);
else if (net < 65536)
addr = (net << IN_CLASSB_NSHIFT) | (host & IN_CLASSB_HOST);
else
addr = (net << IN_CLASSC_NSHIFT) | (host & IN_CLASSC_HOST);
addr = htonl(addr);
return (*(struct in_addr *)&addr);
}