function log_normal_cdf_test ( )

%*****************************************************************************80
%
%% LOG_NORMAL_CDF_TEST tests LOG_NORMAL_CDF, LOG_NORMAL_CDF_INV, LOG_NORMAL_PDF.
%
%  Licensing:
%
%    This code is distributed under the GNU LGPL license.
%
%  Modified:
%
%    23 March 2016
%
%  Author:
%
%    John Burkardt
%
  fprintf ( 1, '\n' );
  fprintf ( 1, 'LOG_NORMAL_CDF_TEST\n' );
  fprintf ( 1, '  LOG_NORMAL_CDF evaluates the Log Normal CDF;\n' );
  fprintf ( 1, '  LOG_NORMAL_CDF_INV inverts the Log Normal CDF.\n' );
  fprintf ( 1, '  LOG_NORMAL_PDF evaluates the Log Normal PDF;\n' );

  mu = 0.5;
  sigma = 3.0;

  check = log_normal_check ( mu, sigma );

  if ( ~ check );
    fprintf ( 1, '\n' );
    fprintf ( 1, 'LOG_NORMAL_CDF_TEST - Fatal error!\n' );
    fprintf ( 1, '  The parameters are not legal.\n' );
    return
  end

  fprintf ( 1, '\n' );
  fprintf ( 1, '  PDF parameter MU =             %14g\n', mu );
  fprintf ( 1, '  PDF parameter SIGMA =          %14g\n', sigma );

  seed = 123456789;

  fprintf ( 1, '\n' );
  fprintf ( 1, '       X            PDF           CDF            CDF_INV\n' );
  fprintf ( 1, '\n' );

  for i = 1 : 10

    [ x, seed ] = log_normal_sample ( mu, sigma, seed );

    pdf = log_normal_pdf ( x, mu, sigma );

    cdf = log_normal_cdf ( x, mu, sigma );

    x2 = log_normal_cdf_inv ( cdf, mu, sigma );

    fprintf ( 1, ' %14g  %14g  %14g  %14g\n', x, pdf, cdf, x2 );

  end

  return
end
