C++ Coding Error

IntelliSense: identifier "IntersectAndPenetrateSegment" is undefined

How Would I Define this

Code (Not All Of the code)

Code:

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*(DWORD*)ADDR_REMOTEKILL2 = ( (DWORD)IntersectAndPenetrateSegment ) - ( (DWORD)ADDR_REMOTEKILL2 + 0x4 );
                VirtualProtect( (void*) ADDR_REMOTEKILL1, 5, dwOldVProtection, &dwOldVProtection);

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