Meh, there's no documentation for it either. As far as I can tell, it
merely acheives feature parity with GMP, which is no good for floating
point calculations I'm thinking of.
I think you should look again. I don't pretend to be an expert (I failed Maths O level for pity's sake) but other people that know about this stuff rate it.
I don't have any pressing need for it; last week I encountered a
situation where it would have been useful, but I hacked something in
using pow(). But since it's not a matter of life and death, it might be
a nice side-project to get my feet wet making PHP extensions. Also,
PHP's math handling facilities are terribly deficient.
Well that's one thing a lot of people would agree with you over :\
- Steph