HP-50g: help remembering library with Interval Arithmetic

[Gjermund Skailand]

Hi
I wrote the longfloat library a long time ago.

The good thing about the library is that you can manually
calculate in interval mode
or
enter formulas and automatically have uncertainty calculated.

As far as I remember, the main problem with the (simple implementation) is that the uncertainty tends to blow up if the intervals are ...too... big, resulting in something that is practically unusable.

I spent a lot of time trying to get border cases calculated correctly.

I think the source code is included, but comments are very sparse..

best regards
Gjermund