HP300s smartcalc error  Printable Version + HP Forums (https://archived.hpcalc.org/museumforum) + Forum: HP Museum Forums (https://archived.hpcalc.org/museumforum/forum1.html) + Forum: Old HP Forum Archives (https://archived.hpcalc.org/museumforum/forum2.html) + Thread: HP300s smartcalc error (/thread161378.html) 
HP300s smartcalc error  Scott Smith  01052010 Hi, When I do the following calc on my smartcalc I get the wrong ansswer. Any ideas anyone? The calc is 78724*pi*.075^2*.5 I get an answer of 800 instead of around 695. Thanks
Scott
Re: HP300s smartcalc error  Scott Smith  01052010 further to this if I multiply by .500000001 instead of 0.5 I get the correct answer.
Looks like I am back to my 48 or 30s
Re: HP300s smartcalc error  Hubert Weikert  01052010 Hi, With my 300s I get 221*(329/800)*PI, which converts with S<=>D to 695.5839564
Hubert
Re: HP300s smartcalc error  Norman Dziedzic  01052010 Funny, For 221*(329/800)*PI I get 285.527...
Did you copy something down wrong?
Re: HP300s smartcalc error  Scott Smith  01052010 Hi Guys, I too get 285.382 from the above formula. I have done this eqn over and over again on my 300s and always get 800. I have even saved intermediate values in registers and still get the wrong answer. My 38G gives me the correct answers, so too does my 35s and 48.
Looks like I got a dud.
Re: HP300s smartcalc error  Tim Wessman  01052010 I repeated it on my emulator. I'm not sure if it is the actual code used in the unit though, or a reimplementation. . . I suspect it is a setting of some kind causing the problems. Not sure which one though.
TW
Re: HP300s smartcalc error  Bart (UK)  01062010 Hi, Edited: 6 Jan 2010, 1:00 p.m.
Re: HP300s smartcalc error  Walter B  01062010
Quote:Does this mean this device is unable to calculate 1391.167193 / 2 ? That's elementary math! :( Hard to believe. Re: HP300s smartcalc error  Hubert Weikert  01062010 Sorry, I had not checked what I wrote! The correct term is (221+329/800)*PI, which results in 695.58...
The error depends on the setting of the fraction mode (SET UP/down). setting ab/c (Mixed) gives 695.58... setting d/c (improper) gives 800, thats the erroneus display. Hubert
Edited: 7 Jan 2010, 11:27 a.m.
