Cannot convert double to QString

[maxpower]

I am running Qt 4.2.2 on FreeBSD 4.8 with gcc 3.4.6. I am working with dollar amounts in doubles but I cannot properly convert these doubles into QStrings for display in a QLabel. As a test I compiled the following very simple code:

#include <QtCore>
int main () {
        double doublevar = 42.84;
 
        qDebug() << QString::number(doublevar); 
}

#include <QtCore>
int main () {
        double doublevar = 42.84;

        qDebug() << QString::number(doublevar); 
}

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Which outputs "-0" to the terminal. What could be causing this? The same code in this simple program runs fine on my Linux and Windows boxes. If I use a QVariant as below:

#include <QtCore>
int main () {
        double doublevar = 42.84;
 
        QVariant var(doublevar);
        qDebug() << var.toString(); 
}

#include <QtCore>
int main () {
        double doublevar = 42.84;

        QVariant var(doublevar);
        qDebug() << var.toString(); 
}

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The output is "-0.00000000005965e+224". Again, what could be wrong?

Thanks
mAx