Crash when Solve for Integral with 15C

[Thomas Okken]

(09-02-2017 01:45 PM)rprosperi Wrote:  

(09-02-2017 01:24 PM)grsbanks Wrote:  What accuracy and display format did you use when you tested this on the DM42? I just get an "Out of range" error when attempting the integration.

I tested on the DM42 before I woke up and considered the display mode impact, so I'm not 100% sure. I'd guess it was in (my) default of FIX 2, but need to check. I'll update this when I can later today.

Update: Looking at the DM42 reminded me (still in last used status) of the sequence of events. My DM42 was in SCI 04 mode when I first ran it there. It had been in this mode from some prior dabbling, and after it succeeded almost instantly, it was seeing the result in this mode that prompted me to consider changing display mode on the DM15L, leading to success there.

I just ran it again, and it definitely produces 5.9639E91 within 2 seconds.

On the DM42 (and Free42 and HP-42S), accuracy of integration is not controlled by the display mode, but by the ACC variable. ACC is a relative error, so ACC = 0.001 gives three digits. Leaving ACC unset, or set to something <= 0 gives maximum precision, which can take a long time.