Added comment about nan and -nan.

      temp += " ";

    }

    temp += "]";

    // On some operating systems, -nan was being outputted. 

    // Because this method is only used as a cout in our tests, we do not 

    // care about the difference between nan and -nan; they are the same in this case.

    temp.replace(QRegExp("-nan"), "nan");

    std::cout<<temp<<std::endl;

  }