IntelliSense: identifier "IntersectAndPenetrateSegment" is undefined

How Would I Define this

Code (Not All Of the code)
Code:
*(DWORD*)ADDR_REMOTEKILL2 = ( (DWORD)IntersectAndPenetrateSegment ) - ( (DWORD)ADDR_REMOTEKILL2 + 0x4 );
 		VirtualProtect( (void*) ADDR_REMOTEKILL1, 5, dwOldVProtection, &dwOldVProtection);