function num = function_3d_num ( )

%*****************************************************************************80
%
%% FUNCTION_3D_NUM returns the number of 3D functions.
%
%  Licensing:
%
%    This code is distributed under the GNU LGPL license. 
%
%  Modified:
%
%    05 April 2008
%
%  Author:
%
%    John Burkardt
%
%  Parameters:
%
%    Output, integer NUM, the number of 3D functions.
%
  num = 23;

  return
end
