1 /*
2 * License : The MIT License
3 * Copyright(c) 2022 olyutorskii
4 */
5
6 package io.github.olyutorskii.aletojio.rng;
7
8 /**
9 * 31bit Random number generator.
10 *
11 * <p>INFO : {@code java.util.random.RandomGenerator#nextInt(int bound)} added since JDK17 or later.
12 *
13 * @see java.util.Random#nextInt(int bound)
14 */
15 public interface RndInt31 {
16
17 /**
18 * Return next random number as 31bit int from LSB without sign-bit.
19 *
20 * <p>Only positive or zero value returned.
21 *
22 * <p>* LCG implementations on CPU without 64-bit remainders
23 * often output only 31-bit random numbers.
24 *
25 * @return random number
26 */
27 public abstract int nextInt31();
28
29 }