Extended precision library

[G.E.]

Hello,
Thank you rprosperi for your kind words.

Valentin, first of all I really appreciate all your work (SSMC, "Long Live...", lots...), always interesting and enlightening to read all your ideas.
On your points I have followed these almost exact steps, and have these remarks :
1. Fixed format is nice but there is always a case when you "need" more digits. Also due to precision loss on higher functions, it is simpler to raise the number of digits rather than fix the damn algorithm.
9. Yes, absolutely right, the division algorithm is an horrible kludge ! I tried to find an efficient way, and will try the Newton method you show.
11. The precision of the constant PI must be adjustable, the right way I think is as 4*atan(1).
12. I don't like series very much for calculations, they tend to be slow and imprecise, being a CORDIC fan :-)
Can't seem to find the SSMC#4 at the moment, will see.

I posted the programs in the Prime Library for interested people to try.
Regards,
G.E.