From: Paul A Bristow (pbristow_at_[hidden])
Date: 2006-08-01 07:42:35
For the record, as a punishment for raising this issue at the UK C++ BSI
group meeting, I was tasked with raising the issue for the C++ Standards
Some rambling thoughts on this issue are at
Your implementation almost certainly provides a 'proof_of_concept' for this
- as if it was needed.
And I suspect more than a few will be well advised to use it - otherwise
they may find to their cost (possibly considerable cost) that some archives
turn out to be not readable because some floating-point calculation has
produced an infinity or NaN.
If you don't do this, it would seem prudent to ensure that every
floating-point serialized is checked for finiteness before writing to the
archive, and worrying about what to do it any are not!
--- Paul A Bristow Prizet Farmhouse, Kendal, Cumbria UK LA8 8AB +44 1539561830 & SMS, Mobile +44 7714 330204 & SMS pbristow_at_[hidden] | -----Original Message----- | From: boost-bounces_at_[hidden] | [mailto:boost-bounces_at_[hidden]] On Behalf Of Johan Råde | Sent: 30 July 2006 11:02 | To: boost_at_[hidden] | Subject: Re: [boost] [serialization] facets for non-finite numbers | | Robert Ramey wrote: | > Johan Råde wrote: | >> Johan Råde wrote: | >>> At the suggestion of Robert Ramey's, I have put together | facets for | >>> reading and writing non-finite numbers, such as infinity and | >>> not-a-number, to text streams, in a consistent and portable way. | >>> | >>> If there is enough interest in the code, I will submit it for a | >>> mini-review, in order to have it added to the serialization lib. | >>> | > | > Actually, I would like the other codecvt facets in boost | be promoted | > to official status. There should be a "place" in boost | for these and | > other facets. | > | > Robert Ramey | > | > | >>> --Johan Råde | >> | >> New version uploaded to the vault, | >> serialization/non_finite_num_facets.zip. This version has: | >> | >> 1. better handling of fomatting flags | >> 2. more robust check for not-a-number | >> 3. more tests | >> 4. some minor issues have been fixed | >> 5. various code improvements | >> | >> Now I'm not going to make any more changes for a while. | >> Got other things to do. | >> | >> --Johan Råde | >> | >> _______________________________________________ | >> Unsubscribe & other changes: | >> http://lists.boost.org/mailman/listinfo.cgi/boost | > | > | > | > | > | ------------------------------------------------------------- | ----------- | > | > _______________________________________________ | > Unsubscribe & other changes: | http://lists.boost.org/mailman/listinfo.cgi/boost | | I think there should be a Boost facets library, | with the UTF-8 codecvt facet and my non-finite number facets. | There is no reason why they should be buried in the | serialization library. | | But I'm not the right person to take care of that. | My area is scientific computing and GUI programming, | and I know almost nothing about locales, facets and | internationalization. | | --Johan Råde | | | _______________________________________________ | Unsubscribe & other changes: | http://lists.boost.org/mailman/listinfo.cgi/boost |
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