RtlSetBits

VOID __stdcall RtlSetBits(_RTL_BITMAP *BitMapHeader, UINT64 StartingIndex, UINT64 NumberToSet){
  unsigned __int64 v3; 
  UINT64 v4; 
  _BYTE *v5; 
  __int64 v6; 
  char v7; 

  if( (_DWORD)NumberToSet )
  {
    v3 = (unsigned int)StartingIndex;
    v4 = StartingIndex & 7;
    v5 = (char *)BitMapHeader->Buffer + (v3 >> 3);
    v6 = (unsigned int)NumberToSet;
    if( (unsigned int)(v4 + NumberToSet) <= 8 )
    {
      v7 = byte_14001DA00[(unsigned int)NumberToSet] << v4;
LABEL_4:
      *v5 |= v7;
      return;
    }
    if( (_DWORD)v4 )
    {
      v6 = (unsigned int)(v4 + NumberToSet - 8);
      *v5++ |= byte_14001A768[v4];
    }
    if( (unsigned int)v6 > 8 )
    {
      memset(v5, 255i64, (unsigned int)v6 >> 3);
      v5 += (unsigned __int64)(unsigned int)v6 >> 3;
      v6 &= 7u;
    }
    if( (_DWORD)v6 )
    {
      v7 = byte_14001DA00[v6];
      goto LABEL_4;
    }
  }
}

Referenced by: