Bug: HP Prime can't do Log's

[Tim Wessman]

(12-14-2015 07:02 AM)Dieter Wrote:  Please forgive my ignorance, and maybe I get something wrong here, but: if there is a built-in function log(a, b) I would expect it to be evaluated with the usual 15 digit internal precision. Else there is no benefit compared to a manually calculated ln(a)/ln/b). ;-)

...

That's what I would have expected here as well for the log(a, b) function.

Yes, this could be the expected behavior. We've looked at it and you are right that an improvement can be done here. Internally, that was coded the way it was in order to support more then plain integer arguments (complexes, lists, etc). We've added a special path for integers to ensure that 15 digits will be used. Thanks for pointing that out!

As a side note, there were lots of functions in the 48 series coded in a similar manner that would only do 12 digit calculations because internally it was just calls to a series of userRPL functions.