Reminder vs bitwise operation benchmark

gistfile1.java

/*
 * this benchmark compares the speed of
 * the reminder operator vs the bitwise
 * equivalent.
 */
public class ReminderBenchmark  {

  final static long d = 8;
  final static long mask = d-1;
  final static long REPEAT = 1_000_000L;
  static long dummy;
  
  public static long reminderWithDivision(long reps) {
    long start = System.nanoTime();
    for (long i = 0; i < reps; i++) {
       dummy = i % d; 
    }
    long stop = System.nanoTime();
    return stop-start;
  }

  public static long reminderWithBitwise(long reps) {
    long start = System.nanoTime();
    for (long i = 0; i < reps; i++) {
       dummy = i & mask; 
    }
    long stop = System.nanoTime();
    return stop-start;
  }

  public static void main(String[] args) throws Exception {
    long v1 = 0;
    long v2 = 0;
    long reps = Long.valueOf(args[0]);

    for( int i = 0; i < reps ; i++ ) {
        v1 += reminderWithBitwise( REPEAT );
        v2 += reminderWithDivision( REPEAT );
    }

    System.out.println( "average bitwise  = " + (v1/reps) );
    System.out.println( "average division = " + (v2/reps) );
  }
}