usr/src/lib/libc/net/inet_makeaddr.c

/*      inet_makeaddr.c 4.3     82/11/14        */

#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;
        else if (net < 65536)
                addr = (net << IN_CLASSB_NSHIFT) | host;
        else
                addr = (net << IN_CLASSC_NSHIFT) | host;
        addr = htonl(addr);
        return (*(struct in_addr *)&addr);
}