What is the best way to cast Quint16 to QBitarray(16) ?

zeroptr

Hi all,

thanx..

? Offline

Hi!
I don't think there's a 'nice' way. So maybe something like this:

QBitArray quint16ToQBitArray(quint16 v)
{
    QBitArray ba(16);
    for (int i=0; i<16; i++)
        ba.setBit(i, v>>i & 1);
    return ba;
}


quint16 qBitArrayToQuint16(const QBitArray &ba)
{
    quint16 v = 0;
    for (int i=0; i<16; i++)
        v |= ba.at(i)<<i;
    return v;
}

kshegunov

Hello,
If you feel lazy and don't want to run for loops, as I usually do, you could also try:

quint16 value; //< Your value

QByteArray data = QByteArray::fromRawData(reinterpret_cast<char *>(&value), sizeof(quint16));
QDataStream stream(&data, QIODevice::ReadOnly);

QBitArray bitArray(sizeof(quint16));
stream >> bitArray;

Although it doesn't seem to be shorter than @Wieland's suggestion.

Kind regards.

zeroptr

Hi,

@kshegunov I tried the same thing also your code but I could not manage it to work.. I have already have a Qdatastream, I get quint16 values from it... I tried your solution at first sight...

@Wieland The code you send works fine thank you very much..

Have Nice day guys.. Thanks for your help.. It's very valuable..