AriCalculator is a home made pocket calculator.

[grsbanks]

Doing something similar here

I'm planning on replacing the firmware in a Swiss Micros DM11 so that everything is native, no Nut emulation, so hopefully much faster.

I have +, -, *, /, sqrt, sin, cos, tan, ln, log, and e^x working in my decimal floating point library so far. 21-24 digits accuracy, so within the framework I'd set myself (20 display digits, 24 digits internally). 10^x is up next and then asin, acos and atan. I'd rather get the hyperbolic trig functions done with CORDIC if possible but if not I'll just calculate them using e^x.