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Sprite 1984 - 1993
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Net_InetAddrHostNum.c
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C/C++ Source or Header
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1988-11-21
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/*
* Net_InetAddrHostNum.c --
*
* Extract the host 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: /sprite/src/lib/net/RCS/Net_InetAddrHostNum.c,v 1.1 88/11/21 09:10:12 mendel Exp $ SPRITE (Berkeley)";
#endif not lint
#include "sprite.h"
#include "net.h"
/*
*----------------------------------------------------------------------
*
* Net_InetAddrHostNum --
*
* Return the host portion of an Internet address.
* Handles class A/B/C network formats.
*
* Results:
* The host portion an IP address.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
unsigned int
Net_InetAddrHostNum(inetAddr)
Net_InetAddress inetAddr;
{
register Net_InetAddress i = Net_NetToHostInt(inetAddr);
if (NET_INET_CLASS_A_ADDR(i)) {
return((i) & NET_INET_CLASS_A_HOST_MASK);
} else if (NET_INET_CLASS_B_ADDR(i)) {
return((i) & NET_INET_CLASS_B_HOST_MASK);
} else {
return((i) & NET_INET_CLASS_C_HOST_MASK);
}
}