[Scilab-users] CLR design component is not clear in scilab 6.0.2 x64 W10

[Samuel Gougeon]

Le 30/10/2019 à 23:25, Federico Miyara a écrit :
>
> Samuel,
>
> In another e-mail that for some reason was not sent (and was 
> completely deleted...) I mentioned this page 
> https://en.wikipedia.org/wiki/List_of_mathematical_symbols and 
> standard ISO 80000-2, which in its clause 9, item 2.9.5 

I have well received it, but in private, and ending with this reference, 
that is not public (to buy)
(not sure that i can access to it from my University. Will try later).


> says that symbol for multiplication is either · or ×, and that they 
> can be omitted if no misunderstanding is possible, and presents two 
> examples of omission, one with space, such as /a/ /b/, and one without 
> space, such as /ab/ (I suppose this is when one has been already using 
> /a/ and /b/ or they are immediately explained).


Thanks for this explicitness.

>
> I like the space more, it is more general and the only situation where 
> it would be ambiguous is between numbers, such as 1.234 58 (since the 
> thousand separator is a short space according to the ISO-BIPM GUM), 
> but between numbers × is customary.

It would be /v//ery/ hard (and easily prone to errors, due to many 
specific cases, using parentheses, etc) to parse the input to detect all 
possible cases (1-char symbols, multiple-char symbols, literal numbers 
with or without exponential notations, real or complex, etc) and adapt 
the multiplication symbol accordingly.

We might even define a "Ts.s=2" structure field in the context, and use 
it in the input. It works.
;-)

A final possible gallery:


Regards


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