Posts: 203
Threads: 29
Joined: Nov 2009
On the 32sii and 35s I can be in fraction mode and type something like
0.125 +
Which will add 1/8 to the number in X.
On the wp34s the same keystrokes don't add anything. Entering an integer works but it seems that as soon as I type the first decimal separator, it wants to see the second one as well.
Posts: 4,587
Threads: 105
Joined: Jul 2005
Hi Norman,
Thanks, you found another bug!
Walter
Posts: 3,229
Threads: 42
Joined: Jul 2006
You are in fraction mode. 0.125 is 0 / 125 which is plain zero.
What would you expect if you added 1.125 ?
Or 1.1.125 ?
Where does fraction mode end and real mode being is the question here.
- Pauli
Posts: 1,545
Threads: 168
Joined: Jul 2005
Hey Pauli.
I think the assumption is that the 32sII paradigm for fractions is "the way things should work".
Posts: 3,229
Threads: 42
Joined: Jul 2006
Even if it is inconsistent?
I don't have a 32sII to hand so I can't experiment at the moment.
However if 1.2 is a half, 0.2 should be 0 IMHO.
The problem might be that we're not changing the display during entry in fraction mode so it isn't clear enough what is happening.
- Pauli
Posts: 203
Threads: 29
Joined: Nov 2009
Quote:
You are in fraction mode. 0.125 is 0 / 125 which is plain zero.
What would you expect if you added 1.125 ?
Or 1.1.125 ?
Where does fraction mode end and real mode being is the question here.
- Pauli
Gene is right. I was going by the 32sii standard.
To enter 0/125 on the 32sii you would enter . 0 . 125
The operative part of enter a fraction is that decimal occurs twice in the entry. With only a single . the entry is considered a decimal entry. The 32sii gives the example of entering 5/8 as either . 5 . 8 OR 5 . . 8
Edited: 2 May 2011, 8:15 p.m. after one or more responses were posted
Posts: 3,229
Threads: 42
Joined: Jul 2006
I understand the difference now. Shows how often I use fraction mode on the 32sII :-)
- Pauli
Posts: 4,587
Threads: 105
Joined: Jul 2005
Quote:
With only a single . the entry is considered a decimal entry. The 32sii gives the example of entering 5/8 as either . 5 . 8 OR 5 . . 8
That's inconsistent. By plain and simple logic, 5/8 shall be entered as .5.8 - 5..8 enters 5 0/8 !
Posts: 203
Threads: 29
Joined: Nov 2009
Quote:
That's inconsistent. By plain and simple logic, 5/8 shall be entered as .5.8 - 5..8 enters 5 0/8 !
For better or worse, it is consistent with the 32sII manual ;-) Perhaps the developers of the 32sII realized that there is virtually no need to ever key in a fraction with numerator of 0.
HOWEVER, this input method which I'm choosing to call a short cut does not work on the 35s. (Yes I know it is technically not a short cut since it is the same number of keystrokes as . 5 . 8 but it is easier to key in because of the repeated .).
Working on a my 32sII with FDISP on.
Keypress Display
-------- -------
5 5_
. 5._
. 5/_
8 5/8_
<ENTER> 0 5/8
I guess the major question is whether or not the 32SII should be followed exactly or not. If you want to duplicate the 32SII then I highly recommend reading chapter 5 of the 32SII manual which is on the Museum DVDs.
Posts: 4,587
Threads: 105
Joined: Jul 2005
We don't follow the 32SII exactly - you will never see anything like 0 5/8 on the wp34s I hope ;-)
When PROFRC is set, the logic behind our input is:
.5.8 ENTER results in 5/8
.58 ENTER shall result in 29/50
5.8 ENTER shall result in 5 4/5
5.8.9 ENTER results in 5 8/9
5.9.8 ENTER results in 6 1/8
5..8 ENTER results in 5 0/1
with the 0/1 indicating you're in fraction mode. One may discuss whether the 0/1 is necessary or should be discarded, since the missing decimal mark may be sufficient evidence.
Walter
Posts: 3,283
Threads: 104
Joined: Jul 2005
The decimal mark is missing in most cases, so we need some indication.
Posts: 4,587
Threads: 105
Joined: Jul 2005
Hi Norman, all,
FYI, the latest build (820) handles all such inputs and operations properly, as far as I checked. Enjoy - and continue testing :-) !
Walter