I also raised this issue with the Standards group http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n2022.pdf but I suspect getting C++0x out of the door is a higher priority. So maybe it is a problem that Boost should fully solve - much of the work has already been done by Johan Rade. Possibly a GSoC project to polish it up/off? Paul --- Paul A Bristow Prizet Farmhouse, Kendal, Cumbria UK LA8 8AB +44 1539561830 & SMS, Mobile +44 7714 330204 & SMS pbristow@hetp.u-net.com
-----Original Message----- From: boost-bounces@lists.boost.org [mailto:boost-bounces@lists.boost.org] On Behalf Of Jeff Garland Sent: 14 March 2007 23:15 To: boost@lists.boost.org Subject: Re: [boost] [format] - exponential format, NaN and infinity
frederic.bron@alcan.com wrote:
This is about output of real values (float, double, ...) in exponential format and output of not a number and infinity. My concern is that in C++, the output differs from one compiler/machine to another. It would be very nice if boost::format could garantee the same output on every computer.
I'm not 100% sure this will solve your problem, but you should have a look at the floating_point_utils from Johan Rade with help from John Maddock and others. You can find it in the vault here
http://boost-consulting.com/vault/index.php?&direction=0&order= &directory=Math%20-%20Numerics
It's not an official lib yet, but I believe it's been testing on a whole bunch of compilers and platforms. There's a long discussion of this in the mail archive -- look for 'fpclassify' on this page:
http://lists.boost.org/Archives/boost/2006/12/index.php
HTH,
Jeff _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost