function i4_gpf_values_test ( )

%*****************************************************************************80
%
%% i4_gpf_values_test() tests i4_gpf_values().
%
%  Licensing:
%
%    This code is distributed under the MIT license.
%
%  Modified:
%
%    16 November 2022
%
%  Author:
%
%    John Burkardt
%
  fprintf ( 1, '\n' );
  fprintf ( 1, 'i4_gpf_values_test():\n' );
  fprintf ( 1, '  i4_gpf_values() returns some exact values\n' );
  fprintf ( 1, '  of the greatest prime factor function:\n' );
  fprintf ( 1, '\n' );
  fprintf ( 1, '     N      I4_gpf(N)\n' );
  fprintf ( 1, '\n' );

  n_data = 0;

  while ( true )

    [ n_data, n, gpf ] = i4_gpf_values ( n_data );

    if ( n_data == 0 )
      break
    end

    fprintf ( 1, '  %4d  %10d\n', n, gpf );

  end

  return
end
