Simon> Since my lack of knowledge of XEmacs internals prevents me Simon> from doing it properly, I just wanted bignums for doing Simon> some authentication/encryption stuff. The `calc' package Simon> will be enough for me until I want performance. In this Simon> case, a native bignum implementation or a elisp-library Simon> that uses GMP is equally good for my purposes. Or you could call out to an external program to do the math, couldn't you? That's not hard to do.