Perhaps I'm doing something wrong, but I do not get the correct answers using the SUM function (under the STAT menu)for sum of x & y.
I'm using version 2769.
Tom Scott
SUM function on WP-34S
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Post: #13
04-18-2012, 11:32 AM
Perhaps I'm doing something wrong, but I do not get the correct answers using the SUM function (under the STAT menu)for sum of x & y. Tom Scott ▼
Post: #14
04-18-2012, 01:05 PM
Thanks for reporting. To handle your message properly it would be quite helpful to *know* what you did and what you got. TIA d:-) ▼
Post: #15
04-18-2012, 01:45 PM
I'm running build 2747 and I also have a problem. Here are the number that I entered:
Clear Sigma The Sums menu reports the sum of X to be 55 and the sum of Y to be 15 (correctly). However, SUM from the STAT menu (which I hadn't noticed before!) returns the numbers -8.22E-279 and -8.33e-80 to the x and y registers. Nigel (UK) ▼
Post: #16
04-18-2012, 01:50 PM
Thanks for reporting. I already have an idea what caused this. Has to be repaired for sure :-) ▼
Post: #17
04-18-2012, 01:57 PM
For build 2823, the emulator returns correct results. Please update :-) ▼
Post: #18
04-18-2012, 04:00 PM
I've just updated my calculator to build 2823 and the problem remains. The same input (or indeed any input that I have tested) causes SUM to return the same two strange numbers as in my previous post. Nigel (UK)
Post: #20
04-18-2012, 04:49 PM
I can't reproduce it here on the emulator. I have to test on the device. Edit: Outch, that hurts! It's a device only problem. Now I need to start my hardware debugger again. :-( Edit again: I think I fixed it. :-)
Edited: 18 Apr 2012, 5:16 p.m. ▼
Post: #22
04-18-2012, 05:57 PM
Quote:Well Marcus, then I hope you have time for fixing me? ;-) It has also to do with SUM, because after reading this thread here I was more than confused! I remember from WP34s V2 that there were library files sum/product.wp34s which had functions to build the sum/product looping over a user-defined function. And I still can find this code in V3, now it's in XROM and combined into prodsum.wp34s. But in this thread I read now that SUM just return Sx and Sy of the statistics registers!? So I checked the manual and found the description for the SUM command (but only for Sx/Sy), but no PRD, PROD or PRODUCT at all.
Now I'm really confused: what has happend to these commands from V2? Franz
Edited: 18 Apr 2012, 5:59 p.m. |