case -1:
      user_errors++;
      break;
    case 3:
      progress_errors++;
      break;
    case 4:
      //      if (abs(eval(_ui).max()) > 1.0e-6)
      limit_errors++;
      //      else
      //	convergences++;
      break;
    default:
      unknown_errors++;
      break;
    }
  std::clog.setf (std::ios::scientific);
  if (1 != info)
    {
      std::clog
	<< "\r"
	<< " time " << _t << " \t"
	<< " converge (" << convergences << ") "
	<< " limit (" << limit_errors << ")"
	<< " progress (" << progress_errors << ")"
	<< " other (" << input_errors + user_errors + unknown_errors << ") "
	<< " (max error = " << std::abs (eval(_ui).max()) << ")"
	<< " other (" << input_errors + user_errors + progress_errors + unknown_errors << ") "
	<< std::endl;
    }
  else
    {
      std::clog
	<< "\r time " << _t << "\t max error = " << std::abs (eval(_ui).max());
    }
  ferr << info << " ";
}