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 MIT license.
%
%  Modified:
%
%    14 February 2003
%
%  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' );

  a = 10.0;
  b = 2.25;

  check = log_normal_check ( a, b );

  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 A =             %14g\n', a );
  fprintf ( 1, '  PDF parameter B =             %14g\n', b );
  fprintf ( 1, '\n' );
  fprintf ( 1, '       X            PDF           CDF            CDF_INV\n' );
  fprintf ( 1, '\n' );

  for i = 1 : 10

    x = log_normal_sample ( a, b );

    pdf = log_normal_pdf ( x, a, b );

    cdf = log_normal_cdf ( x, a, b );

    x2 = log_normal_cdf_inv ( cdf, a, b );

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

  end

  return
end
