@Override
public Pair<RNG, Integer> nextInt() {
long newSeed = (seed * 0x5DEECE66DL + 0xBL) & 0xFFFFFFFFFFFFL;
RNG nextRNG = new SimpleRNG(newSeed);
int n = (int) (newSeed >>> 16);
return Pair.of(nextRNG, n);
}
public static Pair<RNG, Double> nextDouble(RNG rng) {
Pair<RNG, Integer> raw = nonNegativeInt(rng);
return Pair.of(raw.fst, ((double) raw.snd) / Integer.MAX_VALUE);
}
public static Pair<RNG, Boolean> nextBoolean(RNG rng) {
Pair<RNG, Integer> raw = rng.nextInt();
return Pair.of(raw.fst, raw.snd % 2 == 0);
}
public static Pair<RNG, Integer> nonNegativeInt(RNG rng) {
Pair<RNG, Integer> raw = rng.nextInt();
return Pair.of(raw.fst, raw.snd > 0 ? raw.snd : -(raw.snd + 1));
}