text: #ifndef _CSCI441_TIMER_H_
  #define _CSCI441_TIMER_H_
  
  #include <plf/nanotimer.h>
  
  class Timer {
  protected:
  	plf::nanotimer _timer;
      double _delta;
  
  public:
      Timer() : _delta(0) {}
      void start() { _timer.start(); }
      void stop() { _delta += _timer.get_elapsed_ms(); }
      void reset() { _delta = 0; }
      double total() const { return _delta; }
  };
  #endif
  