function mean = gumbel_mean ( )

%*****************************************************************************80
%
%% GUMBEL_MEAN returns the mean of the Gumbel PDF.
%
%  Licensing:
%
%    This code is distributed under the GNU LGPL license.
%
%  Modified:
%
%    12 September 2004
%
%  Author:
%
%    John Burkardt
%
%  Parameters:
%
%    Output, real MEAN, the mean of the PDF.
%
  mean = euler_constant ( );

  return
end