public static void bessel_ix_values_test()
    //****************************************************************************80
    //
    //  Purpose:
    //
    //    BESSEL_IX_VALUES_TEST tests BESSEL_IX_VALUES.
    //
    //  Licensing:
    //
    //    This code is distributed under the GNU LGPL license.
    //
    //  Modified:
    //
    //    18 January 2012
    //
    //  Author:
    //
    //    John Burkardt
    //
    {
        double fx = 0;
        double nu = 0;
        double x  = 0;

        Console.WriteLine("");
        Console.WriteLine("BESSEL_IX_VALUES_TEST:");
        Console.WriteLine("  BESSEL_IX_VALUES stores values of ");
        Console.WriteLine("  the Bessel In function for NONINTEGER order.");
        Console.WriteLine("");
        Console.WriteLine("      NU    X         IN(X)");
        Console.WriteLine("");
        int n_data = 0;

        for (;;)
        {
            Bessel.bessel_ix_values(ref n_data, ref nu, ref x, ref fx);
            if (n_data == 0)
            {
                break;
            }

            Console.WriteLine("  "
                              + nu.ToString(CultureInfo.InvariantCulture).PadLeft(12) + "  "
                              + x.ToString(CultureInfo.InvariantCulture).PadLeft(12) + "  "
                              + fx.ToString(CultureInfo.InvariantCulture).PadLeft(12) + "");
        }
    }