function mean = arcsin_mean ( a )

%*****************************************************************************80
%
%% ARCSIN_MEAN returns the mean of the Arcsin PDF.
%
%  Licensing:
%
%    This code is distributed under the GNU LGPL license.
%
%  Modified:
%
%    01 September 2004
%
%  Author:
%
%    John Burkardt
%
%  Parameters:
%
%    Input, real A, the parameter of the CDF.
%    A must be positive.
%
%    Output, real MEAN, the mean of the PDF.
%
  mean = 0.0;

  return
end