Well the original zips of constants are still in the Boost vault under math constants at http://tinyurl.com/ryjxv And being MATH constants, they haven't changed ;-)) (Unlike some of the physical constants - which is why I would strongly recommend keeping them apart, for example, by being in different namespaces). Disheartened by the vociferous criticism of a (the) very few reviewers, (over use cases that I judged not important enough to reject the idea) I have not made any changes to the method of presentation or the list. You may find the files a convenient source of math constants that will avoid rummaging around the web. Nearly everyone will just want plain doubles, and one of the files in the zip provides just that. (floats and long doubles, are available and NTL quad_float and RR can be handled using the macros). C++0X Language extension proposals promise to allow one to write area = pi * r * r; rather than area = pi() * r * r; but I am not holding my breath. If the PQS system is accepted and the format for constants is judged acceptable, it may be worth taking the constants out of PQS into clearer view so that the values may be used by those not using the full-blown units system (for example, the mathematical and statistical functions). However, I am coming to the view that the politically incorrect macros may be the best way to insert the decimal digit strings into the right places in users code. After all, the BOOST_* namespace is pretty well polluted already, so adding BOOST_PI, BOOST_E ... isn't going to make much difference ;-) (Some M_PI ... values already exist from many (all?) versions of math.h). Other opinions? 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 Janek Kozicki | Sent: 05 June 2006 15:48 | To: boost@lists.boost.org | Subject: Re: [boost] [Review][PQS] Math Constants? | | Hi Paul, | | When talking about physical quantities, I'd like to ask a related | subject - math constants. They would be really handy inside | boost (not | as a separate library). | | Err.. what is the status of including your math constants library ? | | PS: sorry about abrupt subject change. | | -- | Janek Kozicki | | | _______________________________________________ | Unsubscribe & other changes: | http://lists.boost.org/mailman/listinfo.cgi/boost |