RtlpMakeXpressCallback

unsigned __int64 __fastcall RtlpMakeXpressCallback(__int64 a1, unsigned __int64 a2, __int64 a3){
  unsigned __int64 result; 

  (*(void(__fastcall **)(_QWORD))a1)(*(_QWORD *)(a1 + 8));
  result = a3 + *(unsigned int *)(a1 + 16);
  if( a2 < result )
    return a2;
  return result;
}

Referenced by:

RtlCompressBufferXpressHuffMax
RtlCompressBufferXpressHuffStandard
RtlCompressBufferXpressLzMax
RtlCompressBufferXpressLzStandard
RtlDecompressBufferXpressHuffProgress
RtlDecompressBufferXpressLzProgress