anchor.diff:          _    -> T - 1
       end.
   
  -%% @doc Returns the smallest integer not smaller than X. 
  +%% @doc Returns the smallest integer not smaller than X.
   -spec ceil(X::number()) -> integer().
   ceil(X) when X < 0 ->
       erlang:trunc(X);
  
positive.code:           end,
      case DoAnswer of
          true -> comm:send_local(SrcPid, {parallel_result, Id, Res});
          _ -> ok 
      end,
      ok.
  
  
negative.code: %% @doc Try to check whether common-test is running.
  -spec is_unittest() -> boolean().
  is_unittest() ->
      case catch ct:get_status() of
          no_tests_running     -> false;
          {error, _}           -> false;
          {'EXIT', {undef, _}} -> false;
          _                    -> true
      end.
  
  -spec make_filename([byte()]) -> string().
  