randspeedtest

    public static void main(String[] args) {

        long seed = XorshiftGenerator.randomSeed();
        Xorshift64Generator rand1 = new Xorshift64Generator(seed);
        Xorshift64Generator rand2 = new Xorshift64Generator(seed);
        boolean[] bools = new boolean[1 << 20];
        long t0,t1;

        t0 = System.nanoTime();
        for(int i = 0; i < (1 << 20); i++){
            bools[i] = rand1.nextBoolean(); // <- return ( next() & 1 ) != 0;
        }

        t1 = System.nanoTime();
        System.out.println("Uncached time lapse: " + (t1 - t0)/1000);

        t0 = System.nanoTime();
        for(int i = 0; i < (1 << 20); i++){
            bools[i] = rand2.nextBooleanCached(); // <- cached version
        }

        t1 = System.nanoTime();
        System.out.println("Cached time lapse: " + (t1 - t0)/1000);

        System.out.println();
        System.out.println("Testing if the order matters..:");

        seed = XorshiftGenerator.randomSeed();
        rand1 = new Xorshift64Generator(seed);
        rand2 = new Xorshift64Generator(seed);

        t0 = System.nanoTime();
        for(int i = 0; i < (1 << 20); i++){
            bools[i] = rand1.nextBooleanCached();
        }

        t1 = System.nanoTime();
        System.out.println("Cached time lapse: " + (t1 - t0)/1000);

        t0 = System.nanoTime();
        for(int i = 0; i < (1 << 20); i++){
            bools[i] = rand2.nextBoolean();
        }

        t1 = System.nanoTime();
        System.out.println("Uncached time lapse: " + (t1 - t0)/1000);
    }