code: protected function dumpFloat($val)
      {
          $date = $this->checkTimestamp($val);
          if ($date) {
              $this->wrapAttribs['class'][] = 'timestamp';
              $this->wrapAttribs['title'] = $date;
          }
          return $val;
      }
docs: Dump float value
  
  @param integer $val float value
  
  @return float