QtScript - How to use maths functions in a script?

[behu]

Hello,
I started to use script in qt a few days ago,
but I have a very basic (I suppose) problem :
how to use the maths function in a script?
(Because if I understand correctly theses functions exist : http://doc.trolltech.com/main-snapshot/ecmascript.html).
Maybe it is related to "importExtension("qt.core")" but I do not succeed to make it working.
Thanks a lot.

Here is an example of code I want to use :

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
 
    QScriptEngine testEngine;
    QString content = "var stuff = cos(50);";
 
    QScriptSyntaxCheckResult result = QScriptEngine::checkSyntax (content );
    if(result.state() != QScriptSyntaxCheckResult::Valid){
        QMessageBox::warning(0,"Erreur de syntaxe",result.errorMessage());
        return -1;
    }
 
    testEngine.evaluate(content);
 
    if (testEngine.hasUncaughtException()) {
            QMessageBox::warning(0,"Erreur d'execution", testEngine.uncaughtException().toString());
    }
 
    return a.exec();
}

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);

    QScriptEngine testEngine;
    QString content = "var stuff = cos(50);";

    QScriptSyntaxCheckResult result = QScriptEngine::checkSyntax (content );
    if(result.state() != QScriptSyntaxCheckResult::Valid){
        QMessageBox::warning(0,"Erreur de syntaxe",result.errorMessage());
        return -1;
    }

    testEngine.evaluate(content);

    if (testEngine.hasUncaughtException()) {
            QMessageBox::warning(0,"Erreur d'execution", testEngine.uncaughtException().toString());
    }

    return a.exec();
}

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This code returns "cos is undefined" from the evaluation.