function cosine_cdf_test ( )

%*****************************************************************************80
%
%% cosine_cdf_test() tests cosine_cdf(), cosine_cdf_inv(), cosine_pdf().
%
%  Licensing:
%
%    This code is distributed under the MIT license.
%
%  Modified:
%
%    20 March 2016
%
%  Author:
%
%    John Burkardt
%
  fprintf ( 1, '\n' );
  fprintf ( 1, 'COSINE_CDF_TEST()\n' );
  fprintf ( 1, '  COSINE_CDF() evaluates the Cosine CDF.\n' );
  fprintf ( 1, '  COSINE_CDF_INV() inverts the Cosine CDF.\n' );
  fprintf ( 1, '  COSINE_PDF() evaluates the Cosine PDF.\n' );

  a = 2.0;
  b = 1.0;

  check = cosine_check ( a, b );

  if ( ~check );
    fprintf ( 1, '\n' );
    fprintf ( 1, 'COSINE_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 = cosine_sample ( a, b );

    pdf = cosine_pdf ( x, a, b );

    cdf = cosine_cdf ( x, a, b );

    x2 = cosine_cdf_inv ( cdf, a, b );

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

  end

  return
end
