RtlUInt64ToSIZET - NtDoc

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

//
// UINT64 -> SIZE_T conversion
//
#define RtlUInt64ToSIZET  RtlULongLongToULongPtr

#endif
#endif
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