RtlClearBits

VOID *__stdcall RtlClearBits(PRTL_BITMAP BitMapHeader, UINT32 StartingIndex, UINT32 NumberToClear){
  VOID *result; 
  unsigned __int64 v4; 
  __int64 v5; 
  _BYTE *v6; 
  __int64 v7; 

  if( NumberToClear )
  {
    v4 = StartingIndex;
    v5 = StartingIndex & 7;
    v6 = (char *)BitMapHeader->Buffer + (v4 >> 3);
    v7 = NumberToClear;
    if( (unsigned int)v5 + NumberToClear <= 8 )
    {
      result = (VOID *)(unsigned __int8)byte_14001DA00[NumberToClear];
      LOBYTE(result) = ~((_BYTE)result << v5);
LABEL_4:
      *v6 &= (unsigned __int8)result;
      return result;
    }
    if( (_DWORD)v5 )
    {
      result = (VOID *)(unsigned __int8)byte_14001DA00[v5];
      v7 = (unsigned int)v5 + NumberToClear - 8;
      *v6++ &= (unsigned __int8)result;
    }
    if( (unsigned int)v7 > 8 )
    {
      result = memset(v6, 0i64, (unsigned int)v7 >> 3);
      v6 += (unsigned __int64)(unsigned int)v7 >> 3;
      v7 &= 7u;
    }
    if( (_DWORD)v7 )
    {
      result = (VOID *)(unsigned __int8)byte_14001A768[v7];
      goto LABEL_4;
    }
  }
  return result;
}

Referenced by: