function len = line01_length ( )

%*****************************************************************************80
%
%% line01_length(): length of the unit line in 1D.
%
%  Licensing:
%
%    This code is distributed under the MIT license. 
%
%  Modified:
%
%    17 January 2014
%
%  Author:
%
%    John Burkardt
%
%  Output:
%
%    real LEN, the length.
%
  len = 1.0;

  return
end
