Bitwise vs. division benchmark

gistfile1.java

public class Main {
	static final int CALCULATIONS_PER_TRIAL = 10000000;
	static final int TRIALS_PER_RUN = 100;
	
	public static void main(String[] args) throws InterruptedException{
		int bitwiseWins = 0;
		
		for (int trial = 0; trial < TRIALS_PER_RUN; trial++){
			long modulusStart = System.nanoTime();
			for (int calculation = 0; calculation < TRIALS_PER_RUN; calculation++){
				int result = calculation % 64;
				Thread.sleep(1);
			}
			long modulusTime = System.nanoTime() - modulusStart;
		
			long bitwiseStart = System.nanoTime();
			for (int calculation = 0; calculation < TRIALS_PER_RUN; calculation++){
				int result = calculation & 63;
				Thread.sleep(1);
			}
			long bitwiseTime = System.nanoTime() - bitwiseStart;
		
			System.out.println("Trial #" + trial + ": bitwise=" + bitwiseTime + ", modulus=" + modulusTime);
			
			if (bitwiseTime < modulusTime){
				bitwiseWins++;
			}
		}
		
		System.out.println("bitwise operations performed better " + (bitwiseWins*1.0/TRIALS_PER_RUN)*100 + " percent of the time");
	}
}