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Annotation of 43BSD/lib/libc/inet/inet_makeaddr.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1983 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  */
        !             6: 
        !             7: #if defined(LIBC_SCCS) && !defined(lint)
        !             8: static char sccsid[] = "@(#)inet_makeaddr.c    5.1 (Berkeley) 3/11/86";
        !             9: #endif LIBC_SCCS and not lint
        !            10: 
        !            11: #include <sys/types.h>
        !            12: #include <netinet/in.h>
        !            13: 
        !            14: /*
        !            15:  * Formulate an Internet address from network + host.  Used in
        !            16:  * building addresses stored in the ifnet structure.
        !            17:  */
        !            18: struct in_addr
        !            19: inet_makeaddr(net, host)
        !            20:        int net, host;
        !            21: {
        !            22:        u_long addr;
        !            23: 
        !            24:        if (net < 128)
        !            25:                addr = (net << IN_CLASSA_NSHIFT) | (host & IN_CLASSA_HOST);
        !            26:        else if (net < 65536)
        !            27:                addr = (net << IN_CLASSB_NSHIFT) | (host & IN_CLASSB_HOST);
        !            28:        else
        !            29:                addr = (net << IN_CLASSC_NSHIFT) | (host & IN_CLASSC_HOST);
        !            30:        addr = htonl(addr);
        !            31:        return (*(struct in_addr *)&addr);
        !            32: }

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