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[cellml-discussion] Proposal: Standardised CellML real numberformat


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  • From: david.nickerson at nus.edu.sg (David Nickerson)
  • Subject: [cellml-discussion] Proposal: Standardised CellML real numberformat
  • Date: Thu, 20 Sep 2007 09:28:46 +0800
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.


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