| -----Original Message----- | From: boost-bounces@lists.boost.org | [mailto:boost-bounces@lists.boost.org] On Behalf Of Johan Råde | Sent: 03 August 2006 09:54 | To: boost@lists.boost.org | Subject: Re: [boost] [serialization] facets for non-finite numbers | | I have uploaded a new version to the vault. | | This version features: | | 1. Strict C99 conformance: | Output is consistent with C99. (In particular, | negative NaN is | written as "-nan". | All representations allowed by C99 are recognized as input. | | 2. Optional support for negative 0. | | 3. Clean build with VC++ 7.1 at warning level 4. | | 4. Improved documentation. | | This version is backwards compatible with earlier versions. | | The code comes with a test program. I have only run the test | program on | VC++ 7.1. | If you run the test program on any other platform, please report the | result to me. | Both good and bad results are of interest. | | Many thanks to Paul Bristow, John Maddock and Gennaro Prota | for valauble comments. This compiles and run OK on MSVC 8.0 after automatic conversion of the 7.1 vcproject. No warnings either :-)) But of course, the proof of portability is other endians and layouts etc :-) I have yet to get my head round predicting if it will work but looks rather plausible. The only final requirement for TR1 is to template it to provide template<class T> bool signbit(T x); Additions I can see are checks for: 1 If T not specialized then I returning false may be the obvious option. But John Maddock's prototype real_concept is NOT specialised, and yet it would be nice if signbit worked with real_concept. It would also be nice if it worked with NTL quad_float (also == Darwin long double and doubledouble) and RR types, and big_integer when we get one. I will have to think about this. 2 If is_specialized nad is_signed == false, (all unsigned types) then we must surely return false. So many thanks to you for your valuable work on this. Paul --- Paul A Bristow Prizet Farmhouse, Kendal, Cumbria UK LA8 8AB +44 1539561830 & SMS, Mobile +44 7714 330204 & SMS pbristow@hetp.u-net.com