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[cellml-discussion] Proposal: Standardised CellML real numberformat


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  • From: alan.garny at dpag.ox.ac.uk (Alan Garny)
  • Subject: [cellml-discussion] Proposal: Standardised CellML real numberformat
  • Date: Thu, 20 Sep 2007 07:04:15 +0100
> Andrew Miller wrote:
> > Alan Garny wrote:
> >>>> Therefore, I think that we need to restrict it down to something like
> >>>> (in regular expression syntax):
> >>>>
> >>>> (\-|)[0-9]+(\.[0-9]+|)(E(-|)[0-9]+|e(-|)[0-9]+|)
> >>>>
> >>>> In other words:
> >>>> An optional - , followed by 1 or more digits from 0 to 9, followed
by
> >>>> an optional decimal point (not a comma or momayyez) followed by an
> >>>> optional E or e character with a possible sign and one or more digits
> >>>> after it.
> >>>>
> >>> probably best to allow for an optional '+' or '-' both at the start
and
> >>> following the exponent character.
> >>>
> >> So something like (assuming my use of the syntax is correct):
> >>
> >> (\+|\-|)[0-9]+(\.[0-9]+|)((E|e)(\+|\-|)[0-9]+)
> >>
> >> Note that I have also 'simplified' the exponent part.
> >>
> > I don't think the exponent should be mandatory, however, as this would
> > break the majority of models in use.
>
> agreed.

My bad, since I obviously agree with that. So, we should have:

(\+|\-|)[0-9]+(\.[0-9]+|)((E|e)(\+|\-|)[0-9]+|)

And if I have still got the syntax wrong, then please fix it, so we are done
and over with it.

Alan.



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