RtlULongToUInt - NtDoc

#ifndef _NTINTSAFE_H_INCLUDED_
#if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP | WINAPI_PARTITION_SYSTEM | WINAPI_PARTITION_GAMES)

//
// ULONG -> UINT conversion
//
_Must_inspect_result_
__inline
NTSTATUS
RtlULongToUInt(
    _In_ ULONG ulOperand,
    _Out_ _Deref_out_range_(==, ulOperand) UINT* puResult)
{
    C_ASSERT(sizeof(ULONG) == sizeof(UINT));
    *puResult = (UINT)ulOperand;    
    return STATUS_SUCCESS;
}

#endif
#endif
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