PCG-Java

This library implements PCG random number generator (currently only one variant, same as in the minimal C library) in Java.

Usage

Usage is very simple. com.github.alexeyr.pcg.Pcg32 class has an interface very similar to java.util.Random:

// creates the generator with a "random" seed; use Pcg32(long, long) to specify a seed instead.
Pcg32 rnd = new Pcg32();
int n = rnd.nextInt();
// or nextInt(bound), or nextLong(), etc.

You can use seed() or seed(long, long) methods to reseed the generator at any time.

One important difference from Random is that Pcg32 instances are not thread-safe. A thread-safe variant may be added later.

Downloading

PCG-Java is available on JCenter, Sonatype OSS and Maven Central repositories. To use it in your projects, you should be able to just add the following to pom.xml (or the equivalent for your build system):

<dependencies>
  ...
  <dependency>
    <groupId>com.github.alexeyr.pcg</groupId>
    <artifactId>pcg</artifactId>
    <version>0.9.1</version> <!-- latest version number is listed above -->
  </dependency>
  ...
</dependencies>

Alternately, the code is simple enough that you can just include Pcg32.java in your code and modify it as desired.

Dependencies

PCG-Java has no external dependencies, but if you want to run complete tests, your system needs to have make and a C compiler available.

License

The library is available under the Apache 2.0 license, the same as PCG library.