public class timertest {
public static void main(String[]args) {
  TickCounter tc = new TickCounter();
  Timer tm = new Timer();

  System.out.println("Testing high-performance timers...");
  long elap = 0; 
  for (int i=0;i<10;i++) {
    long start = System.currentTimeMillis();
    tc.start();
    tm.start();

    try { Thread.sleep(500); } catch (Throwable exn) {}

    tc.stop();
    tm.stop();
    elap += System.currentTimeMillis() - start; 
    try { Thread.sleep(100); } catch (Throwable exn) {}
  }
  double reftime = elap * 1000.0;
  double tmtime = tm.micros();
  double tctime = tc.ticksToMicros(tc.elapsed);

  if (Math.abs(reftime - tmtime) > 0.1 * tmtime ||
      Math.abs(reftime - tmtime) > 0.1 * tctime)
    System.out.println("FAILED -    reftime: "+reftime+"us\n"+
                       "   TickCounter time: "+tctime+"us\n"+
                       "         Timer time: "+tmtime+"us");
  else System.out.println("PASSED");

  tm.reset();
  tc.reset();
  if (tm.micros() != 0.0) System.out.println("Timer.reset() failed!!!");
  if (tc.elapsed != 0) System.out.println("TickCounter.reset() failed!!!");

  double gran = tc.granularity();
  double over = tc.overhead();

  if (gran == 0.0 || over == 0.0 || gran < 0.5 * over)
   System.out.println("inconsistent TickCounter overhead: "+over+" granularity:"+gran);
  
  System.out.println("done.");
}}