char __fastcall ViXdvSetRequestedAPIsforDIF(int (__fastcall *a1)(__int64 *, __int64 (__fastcall **)())){
if( a1(&VfDifAPIThunkContextHead, ViUtilsForDIF) < 0 )
return 0;
ViSetRequestedAPIs((INT64)&VfRegularThunks);
ViSetRequestedOrderDependentAPIs();
ViSetRequestedAPIs((INT64)&VfPoolThunks);
ViSetRequestedAPIs((INT64)&VfMandatoryThunks);
ViSetRequestedAPIs((INT64)&VfXdvThunks);
ViSetRequestedIoCallbacks();
return 1;
}