Qt 生成隨機區間浮點數 generateRand

//生成隨機數
float MainWindow::generateRand(float min, float max)
{
    static bool seedStatus;
    if (!seedStatus)
    {
        qsrand(QTime(0, 0, 0).secsTo(QTime::currentTime()));
        seedStatus = true;
    }
    if(min>max)
    {
        float temp=min;
        min=max;
        max=temp;
    }
    double diff = fabs(max-min);
    double m1=(double)(qrand()%100)/100;
    double retval=min+m1*diff;
    return retval;
}