4.3BSD - /usr/src/lib/libc/inet/inet_makeaddr.c

   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: }

Defined functions

Defined variables