HP-35 Bug Question

[Gerson W. Barbosa]

(04-20-2014 10:23 PM)Katie Wasserman Wrote:  The early HP calculators didn't calculate integer exponentiation exactly, they used logs and anti-logs to compute them in order save space in ROM.

My guess is they still do, the guard digts rounding the results properly. For instance, on the HP-11C:

Internally:
5 LN... 1.609437912[43]
3 *.... 4.828313737[29]
e^x.... 124.9999999[98]
Displayed result:
....... 125.0000000

The HP-35 lacks guard digits. Also, because of limited ROM space, it doesn't handle the negative x case.
As I said, this is just a guess, though.