function [ n_data, t, n, fx ] = log_series_cdf_values ( n_data )

%*****************************************************************************80
%
%% log_series_cdf_values() returns some values of the log series CDF.
%
%  Discussion:
%
%    In Mathematica, the function can be evaluated by:
%
%      Needs["Statistics`DiscreteDistributions`]
%      dist = LogSeriesDistribution [ t ]
%      CDF [ dist, n ]
%
%  Licensing:
%
%    This code is distributed under the MIT license.
%
%  Modified:
%
%    19 September 2004
%
%  Author:
%
%    John Burkardt
%
%  Reference:
%
%    Stephen Wolfram,
%    The Mathematica Book,
%    Fourth Edition,
%    Wolfram Media / Cambridge University Press, 1999.
%
%  Input:
%
%    integer N_DATA.  The user sets N_DATA to 0 before the first call.  
%    Thereafter, it should simply be the value returned by the previous call.
%
%  Output:
%
%    integer N_DATA.  On each call, the routine increments N_DATA by 1, and
%    returns the corresponding data; when there is no more data, the
%    output value of N_DATA will be 0 again.
%
%    real T, the parameter of the function.
%
%    integer N, the argument of the function.
%
%    real FX, the value of the function.
%
  n_max = 29;

  fx_vec = [ ...
     0.9491221581029903E+00, ...
     0.9433541128559735E+00, ...
     0.9361094611773272E+00, ...
     0.9267370278044118E+00, ...
     0.9141358246245129E+00, ...
     0.8962840235449100E+00, ...
     0.8690148741955517E+00, ...
     0.8221011541254772E+00, ...
     0.7213475204444817E+00, ...
     0.6068261510845583E+00, ...
     0.5410106403333613E+00, ...
     0.4970679476476894E+00, ...
     0.4650921887927060E+00, ...
     0.4404842934597863E+00, ...
     0.4207860535926143E+00, ...
     0.4045507673897055E+00, ...
     0.3908650337129266E+00, ...
     0.2149757685421097E+00, ...
     0.0000000000000000E+00, ...
     0.2149757685421097E+00, ...
     0.3213887739704539E+00, ...
     0.3916213575531612E+00, ...
     0.4437690508633213E+00, ...
     0.4850700239649681E+00, ...
     0.5191433267738267E+00, ...
     0.5480569580144867E+00, ...
     0.5731033910767085E+00, ...
     0.5951442521714636E+00, ...
     0.6147826594068904E+00 ];

  n_vec = [ ...
     1, 1, 1, 1, 1, ...
     1, 1, 1, 1, 1, ...
     1, 1, 1, 1, 1, ...
     1, 1, 1, 0, 1, ...
     2, 3, 4, 5, 6, ...
     7, 8, 9, 10 ];

  t_vec = [ ...
     0.1000000000000000E+00, ...
     0.1111111111111111E+00, ...
     0.1250000000000000E+00, ...
     0.1428571428571429E+00, ...
     0.1666666666666667E+00, ...
     0.2000000000000000E+00, ...
     0.2500000000000000E+00, ...
     0.3333333333333333E+00, ...
     0.5000000000000000E+00, ...
     0.6666666666666667E+00, ...
     0.7500000000000000E+00, ...
     0.8000000000000000E+00, ...
     0.8333333333333333E+00, ...
     0.8571485714857149E+00, ...
     0.8750000000000000E+00, ...
     0.8888888888888889E+00, ...
     0.9000000000000000E+00, ...
     0.9900000000000000E+00, ...
     0.9900000000000000E+00, ...
     0.9900000000000000E+00, ...
     0.9900000000000000E+00, ...
     0.9900000000000000E+00, ...
     0.9900000000000000E+00, ...
     0.9900000000000000E+00, ...
     0.9900000000000000E+00, ...
     0.9900000000000000E+00, ...
     0.9900000000000000E+00, ...
     0.9900000000000000E+00, ...
     0.9900000000000000E+00  ];

  if ( n_data < 0 )
    n_data = 0;
  end
 
  n_data = n_data + 1;

  if ( n_max < n_data )
    n_data = 0;
    t = 0.0;
    n = 0;
    fx = 0.0;
  else
    t = t_vec(n_data);
    n = n_vec(n_data);
    fx = fx_vec(n_data);
  end

  return
end
