usr/src/sys/netinet/in_local.c

/*      in_local.c      4.1     83/03/13        */

/*
 * Site specific Internet routines.
 */

#ifndef if_localmakeaddr
/*
 * Formulate an Internet address from network + host.  Handle
 * local subnet interpretation.  Used in building addresses
 * stored in the ifnet structure.
 */
struct in_addr
if_localmakeaddr(net, host)
        int net, host;
{
        u_long addr, subnet;

        subnet = net >> 24, net &= 0xffffff;
        if (net < 128)
                addr = (net << IN_CLASSA_NSHIFT) | host |
                  (subnet << IN_CLASSA_NSHIFT - 8);
        else if (net < 65536)
                addr = (net << IN_CLASSB_NSHIFT) | host |
                  (subnet << IN_CLASSB_NSHIFT - 8);
        else
                addr = (net << IN_CLASSC_NSHIFT) | host;
        addr = htonl(addr);
        return (*(struct in_addr *)&addr);
}
#endif