If you haven't already I would suggest you take a look at JNA instead of JNI. It does it's binding dynamically instead of having to write native "glue".

P.S. Your comment form won't take my real email address for some reason.

Hi Ferdy!

It's funny to hear that since I have just finished a college paper about using PVM to calculate a Mandelbrot fractal :) I would have never thought pi was involved xD

Talking about obscure ways to calculate pi... I will never forget when my math teacher got the sum of a Fourier series (if I remember right). The result was pi/8. What a guy...

In the post I linked there is a solution in Ruby, and two links to solutions in Prolog and Lisp:

Missionaries and Cannibals in Prolog
Missionaries and Cannibals in Lisp

It shouldn't be too hard to do it in C (thus in C++ and Objective-C). Perl, Java, Python and other imperative languages should also be 'easy'. Bash will be a bit tricker though.

Cheers,
Ferdy

Seen any solutions in other languages?
ie. bash, perl, C, C++