public static void airy_ai_prime_values_test()
    //****************************************************************************80
    //
    //  Purpose:
    //
    //    AIRY_AI_PRIME_VALUES_TEST tests AIRY_AI_PRIME_VALUES.
    //
    //  Licensing:
    //
    //    This code is distributed under the GNU LGPL license.
    //
    //  Modified:
    //
    //    20 January 2007
    //
    //  Author:
    //
    //    John Burkardt
    //
    {
        double aip = 0;
        double x   = 0;

        Console.WriteLine("");
        Console.WriteLine("AIRY_AI_PRIME_VALUES_TEST:");
        Console.WriteLine("  AIRY_AI_PRIME_VALUES stores values of ");
        Console.WriteLine("  the derivative of the Airy function Ai'(X).");
        Console.WriteLine("");
        Console.WriteLine("                X                    Ai'");
        Console.WriteLine("");
        int n_data = 0;

        for (;;)
        {
            Airy.airy_ai_prime_values(ref n_data, ref x, ref aip);
            if (n_data == 0)
            {
                break;
            }

            Console.WriteLine("  "
                              + x.ToString("0.################").PadLeft(24) + "  "
                              + aip.ToString("0.################").PadLeft(24) + "");
        }
    }