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