二进制文件读入double中

QFile file("Rng_1.dat");  
if (!file.open(QIODevice::ReadOnly))
{  
     return;
}
QDataStream byteStreams(&file);
byteStreams.skipRawData(0);
QVector<double> values;
while(!byteStreams.atEnd())
{
      double dbvalue;
      byteStreams>>dbvalue;
      values.append(dbvalue);
}file.close();