QDataStream &QDataStream::operator>>(float &f)
{
    if (version() >= QDataStream::Qt_4_6
        && floatingPointPrecision() == QDataStream::DoublePrecision) {
        double d;
        *this >> d;
        f = d;
        return *this;
    }
    f = 0.0f;
    CHECK_STREAM_PRECOND(*this)
    if (dev->read((char *)&f, 4) != 4) {
        f = 0.0f;
        setStatus(ReadPastEnd);
    } else {
        if (!noswap) {
            union {
                float val1;
                quint32 val2;
            } x;
            x.val2 = qbswap(*reinterpret_cast<quint32 *>(&f));
            f = x.val1;
        }
    }
    return *this;
}