function rk23_test ( )

%*****************************************************************************80
%
%% rk23_test tests rk23.
%
%  Licensing:
%
%    This code is distributed under the MIT license.
%
%  Modified:
%
%    31 October 2019
%
%  Author:
%
%    John Burkardt
%
  addpath ( '../rk23' );

  timestamp ( );
  fprintf ( 1, '\n' );
  fprintf ( 1, 'rk23_test\n' );
  fprintf ( 1, '  MATLAB/Octave version %s\n', version ( ) );
  fprintf ( 1, '  Test rk23.\n' );

  predator_rk2 ( );
  predator_rk3 ( );
%
%  Terminate.
%
  fprintf ( 1, '\n' );
  fprintf ( 1, 'rk23_test\n' );
  fprintf ( 1, '  Normal end of execution.\n' );
  fprintf ( 1, '\n' );
  timestamp ( );

  rmpath ( '../rk23' );

  return
end
