@Test
@Ignore
public void testRandomsOld() {

    double s = 0;
    int N = 1000000;
    long t0 = System.currentTimeMillis();
    MersenneTwister rng = MersenneTwister.fromSystemNanoTime();
    for (int i = 0; i < N; ++i) {
        s += StochasticRandomizer.chi2(rng, 20);
    }
    long t1 = System.currentTimeMillis();
    System.out.println("Old");
    System.out.println(t1 - t0);
    System.out.println(s / N);
}