Source code of Windows XP (NT5)
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/*++
Copyright (c) 1995 Microsoft Corporation
Module Name:
private\inc\ipcmp.h
Abstract: Compare utility functions for IP
Revision History:
Amritansh Raghav 6/16/95 Created
--*/
#ifndef __IPUTILS_H__
#define __IPUTILS_H__
//
// ULONG
// Cmp(DWORD dwFirst, DWORD dwSecond, ULONG lResult)
//
#define Cmp(dwFirst,dwSecond,lResult) ((ULONG)((lResult) = ((dwFirst) - (dwSecond))))
//
// LONG
// PortCmp(WORD wPort1, WORD wPort2, LONG lResult)
//
#define PortCmp(dwPort1, dwPort2,lResult) ((LONG)((lResult) = ((ntohs((WORD)dwPort1)) - (ntohs((WORD)dwPort2)))))
// The addresses are in Network order
//
// LONG
// InetCmp(DWORD IpAddr1, DWORD IpAddr2, LONG lResult)
//
#define InetCmp(dwIpAddr1,dwIpAddr2,res) \
((LONG)(((res) = (((dwIpAddr1) & 0x000000ff) - ((dwIpAddr2) & 0x000000ff))) ? (res) : \ (((res) = (((dwIpAddr1) & 0x0000ff00) - ((dwIpAddr2) & 0x0000ff00))) ? (res) : \ (((res) = (((dwIpAddr1) & 0x00ff0000) - ((dwIpAddr2) & 0x00ff0000))) ? (res) : \ ((res) = ((((dwIpAddr1) & 0xff000000)>>8) - (((dwIpAddr2) & 0xff000000)>>8)))))))
#endif // __IPUTILS_H__
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