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- 1.1
- date 88.11.21.09.09.53; author mendel; state Exp;
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- @Formed from net.c of src/lib/old/net.c.
- @
-
-
-
- 1.1
- log
- @Initial revision
- @
- text
- @/*
- * Net_InetAddrNetNum.c --
- *
- * Return the network part of an internet address.
- *
- * Copyright 1987 Regents of the University of California
- * All rights reserved.
- * Permission to use, copy, modify, and distribute this
- * software and its documentation for any purpose and without
- * fee is hereby granted, provided that the above copyright
- * notice appear in all copies. The University of California
- * makes no representations about the suitability of this
- * software for any purpose. It is provided "as is" without
- * express or implied warranty.
- */
-
- #ifndef lint
- static char rcsid[] = "$Header: net.c,v 2.0 87/08/11 09:34:20 brent Exp $ SPRITE (Berkeley)";
- #endif not lint
-
-
- #include "sprite.h"
- #include "net.h"
-
- /*
- *----------------------------------------------------------------------
- *
- * Net_InetAddrNetNum --
- *
- * Return the network portion of an internet address.
- * Handles class A/B/C network #'s.
- *
- * Results:
- * The network number of an IP address.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- unsigned int
- Net_InetAddrNetNum(addr)
- Net_InetAddress addr;
- {
- register Net_InetAddress i = Net_NetToHostInt(addr);
-
- if (NET_INET_CLASS_A_ADDR(i)) {
- return (((i) & NET_INET_CLASS_A_NET_MASK) >> NET_INET_CLASS_A_SHIFT);
- } else if (NET_INET_CLASS_B_ADDR(i)) {
- return (((i) & NET_INET_CLASS_B_NET_MASK) >> NET_INET_CLASS_B_SHIFT);
- } else {
- return (((i) & NET_INET_CLASS_C_NET_MASK) >> NET_INET_CLASS_C_SHIFT);
- }
- }
-
- @
-