newRPL: Number formatting on screen

[Helix]

(07-08-2015 01:25 PM)Claudio L. Wrote:  * Number of digits to display: For standard mode, this number is the number of figures after decimal dot. For all others this is the total number of significant figures to display.

To be consistent with the 50g behavior, for the "SCI" and "ENG" modes, this should be the total number of significant figures minus 1.

For example, 10.12345 with 3 digits:
Standard mode (FIX): 10.123
SCI mode: 1.012E1 (4 significant figures)
ENG mode: 10.12E0 (4 significant figures)

It's not very important, however.

Otherwise, I like very much your formatting proposal.

(07-10-2015 07:29 PM)Claudio L. Wrote:  

(07-08-2015 01:25 PM)Claudio L. Wrote:  So the number 2.5 in SCI notation can be 2.5E0 even if you select 6 digits.

One more idea: in SCI mode, would it be a good idea to offer the option (a flag) to omit the exponent when the exponent is zero?
Instead of 2.5E0 we could show 2.5, while 25 would be 2.5E1
I think in ENG mode this could be nice, since numbers 0-999 would be shown without exponent.

I think it's not necessary, because we could get the same display with the following settings:
big number cut-off: 1000
big number format: ENG
small number cut-off: 1
small number format: ENG
mid-range number format: standard

(07-10-2015 03:33 PM)Didier Lachieze Wrote:  

(07-09-2015 09:14 PM)Nigel (UK) Wrote:  I personally like being able to limit the number of significant figures displayed without forcing use of scientific notation. So, for example:

pi is shown as 3.142;
100 000 * pi is shown as 314 200.

I find this behaviour misleading: it's one thing to limit the number of digit displayed (what you don't see, you don't know what it is) and it's another thing to display '0' instead of a valid digit: when you see 314200 on the display, the value of the two '0' digits may or may not be the value inside the machine. And nothing tells you which digits are real and which ones are not.

It's my opinion too. But as long as there is a flag to control this feature, there is no reason to complain about it, if this is useful for some people.

(07-10-2015 10:32 PM)Paul Dale Wrote:  What about a second visually distinguishable zero character for the non-significant digits for this mode? A smaller zero perhaps?

The display would be: 314200.
Maybe even superscript or subscript the smaller digits.


- Pauli

Another solution would be the presence of an indicator always visible in the display, to remember the number of digits.
One minor problem I see without the trailing zeros, is that in some cases there will be no evidence of what the number of significant digits is exactly. In the 50g, the trailing zeros are always visible, so we easily know the FIX, SCI or ENG settings.
Personnally, I like trailing zeros...