SUM function on WP-34S - Printable Version +- HP Forums (https://archived.hpcalc.org/museumforum) +-- Forum: HP Museum Forums (https://archived.hpcalc.org/museumforum/forum-1.html) +--- Forum: Old HP Forum Archives (https://archived.hpcalc.org/museumforum/forum-2.html) +--- Thread: SUM function on WP-34S (/thread-218358.html) SUM function on WP-34S - Thomas Scott - 04-18-2012 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 Re: SUM function on WP-34S - Walter B - 04-18-2012 Thanks for reporting. To handle your message properly it would be quite helpful to *know* what you did and what you got. TIA d:-) Re: SUM function on WP-34S - Nigel J Dowrick - 04-18-2012 I'm running build 2747 and I also have a problem. Here are the number that I entered: ```Clear Sigma 1 {enter) 1 Sigma+ 2 {enter} 4 Sigma+ 3 {enter} 9 Sigma+ 4 {enter} 16 Sigma+ 5 {enter} 25 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) Re: SUM function on WP-34S - Walter B - 04-18-2012 Thanks for reporting. I already have an idea what caused this. Has to be repaired for sure :-) Re: SUM function on WP-34S - Walter B - 04-18-2012 For build 2823, the emulator returns correct results. Please update :-) Re: SUM function on WP-34S - Nigel J Dowrick - 04-18-2012 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) Re: SUM function on WP-34S - Walter B - 04-18-2012 We are working on it ... Re: SUM function on WP-34S - Fixed! - Marcus von Cube, Germany - 04-18-2012 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. Re: SUM function on WP-34S - Fixed! - Nigel J Dowrick - 04-18-2012 Works for me! Thank you (again). Time for bed! Nigel (UK) Re: SUM function on WP-34S - Fixed! - fhub - 04-18-2012 Quote: Edit again: I think I fixed it. :-) 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? Have they been removed in V3? Or did they get any new name that I just haven't found yet? Franz Edited: 18 Apr 2012, 5:59 p.m. Re: SUM function on WP-34S - Fixed! - Paul Dale - 04-18-2012 Look for capital sigma and pi in the manual. - Pauli Re: SUM function on WP-34S - Fixed! - fhub - 04-18-2012 Quote: Look for capital sigma and pi in the manual. Oh my god, how could I overlook this!? But the name SUM was so obviously pointing into this direction ... Thanks, Franz