function value = p02_exact ( )

%*****************************************************************************80
%
%% p02_exact() returns the exact integral of function 2 over the unit disk.
%
%  Discussion:
%
%    The integral depends on a parameter EX which must be set by calling
%    p02_parameters() before calling this function.
%
%  Licensing:
%
%    This code is distributed under the MIT license.
%
%  Modified:
%
%    11 October 2022
%
%  Author:
%
%    John Burkardt
%
%  Output:
%
%    real VALUE, the exact integral.
%
  ex = p02_parameters ( );

  value = 2.0 * pi / ( ex + 2.0 );

  return
end
