GMP-Java is a general-purpose JNI wrapper to the GMP library. It's heavily based on the wrapper written in GNU Classpath for Big Integers (GNU Classpath uses GMP for BigInteger objects). This wrapper does nothing more than make it easier to use GMP big integers from Java.
The original copyright notices have been left intact. It should be noted that this particular work is copyright (C) 2009 didier deshommes [email protected] and released under the GPL 2 or later.
Make sure JAVA_HOME is set in your environment.
You'll need a recent JVM, the GMP library and its sources to build
this module. To build it, simply type make. When the sources finish
building, you should have a jar file called GMP.jar that you
can use in your Java application now.
You'll need to add GMP.jar to you classpath. You will also need to add
the generated lib directory to your java.library.path. Example:
$ javac -cp target/*.jar Program.java
$ java -Djava.library.path=gmp-java/ -cp gmp-java/ Program
The main exposed class is org.dfdeshom.math.GMP. This library follows the same conventions as GMP for
usage for efficiency reasons. In particular, all methods return
void and GMP objects are modified IN-PLACE. In general, inputs go
first in methods. Example:
abs(GMP input, GMP result)
An example of using this library in java can be found in example.java which can be run using make example