anchor.diff:                         round(RequestRateCompleteMin * 10.0) / 10.0,
                          round(RequestRateCompleteMax * 10.0) / 10.0,
                          Name, seconds_to_string(Elapsed), RequestRate]),
  -            {0, 0, undefined, undefined};
  -        true ->
  -            {0, 0, undefined, undefined}
  +            {0, 0, 0, 0};
  +        true ->
  +            {0, 0, 0, 0}
       end;
   request_rate(_RequestRate, RequestRateComplete,
                RequestRateCompleteCount, RequestRateCompleteAvg,
  
positive.code:             Right
      end.
  
  float_min(undefined, undefined) ->
      undefined;
  float_min(undefined, Right)
      when is_float(Right) ->
      Right;
  float_min(Left, undefined)
      when is_float(Left) ->
      Left;
  
negative.code: seconds_to_string(Seconds) ->
      io_lib:format("~.1f seconds", [erlang:round(Seconds * 10.0) / 10.0]).
  
  float_max(Left, undefined)
      when is_float(Left) ->
      Left;
  