BigInteger RPN evaluation in Java. BIRPN Calculator allows you to work with BigIntegers in a very concise, but slightly unusual way. If you never heard about "Postfix Notation" or "Reverse Polish Notation", I'd suggest to look up how it works.

BIRPN supports pretty much all methods BigInteger does, but uses sometimes other names. There are some additional functions as well, for example: factorial, fibo, dup and swap.

Requirements:
* Java

The license of this software is Free, you can free download and free use this calculator software.