RtlClearBits

VOID __stdcall RtlClearBits(RTL_BITMAP *BitMapHeader, UINT64 StartingIndex, UINT64 NumberToClear){
  unsigned __int64 v3; 
  UINT64 v4; 
  _BYTE *v5; 
  __int64 v6; 
  char v7; 
  if( (_DWORD)NumberToClear )
  {
    v3 = (unsigned int)StartingIndex;
    v4 = StartingIndex & 7;
    v5 = (char *)BitMapHeader->Buffer + (v3 >> 3);
    v6 = (unsigned int)NumberToClear;
    if( (unsigned int)(v4 + NumberToClear) <= 8 )
    {
      v7 = ~(byte_14001DA00[(unsigned int)NumberToClear] << v4);
LABEL_4:
      *v5 &= v7;
      return;
    }
    if( (_DWORD)v4 )
    {
      v6 = (unsigned int)(v4 + NumberToClear - 8);
      *v5++ &= byte_14001DA00[v4];
    }
    if( (unsigned int)v6 > 8 )
    {
      memset((INT64)v5, 0i64);
      v5 += (unsigned __int64)(unsigned int)v6 >> 3;
      v6 &= 7u;
    }
    if( (_DWORD)v6 )
    {
      v7 = byte_14001A768[v6];
      goto LABEL_4;
    }
  }
}

Referenced by: