Thorsten Ottosen wrote:
Yes, of course. BTW, I've attached the file since my messages seems to format the code like ****.
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Thorsten
With no offense intended, but that's a very simple version which doesn't work in many situations. The problems of your solution are: - Doesn't work well for UDTs (try std::complex, some conversions are ambiguous then) - Doesn't scale for new types (you need to know all of them in the single header that defines the constant) - Doesn't work for more complex expressions (pi*pi*t instead of T(pi)*pi*t) - Doesn't work for function calls (srqt(pi)*t instead of sqrt(T(pi))*t) - Doesn't solve the naming dilemma (how to spell the constant "pi*pi"?) - Doesn't work well with unit libraries AFAICS (again not scaling well) I really suggest you look at my code at <http://groups.yahoo.com/group/boost/files/MathConstants/>, which solves all of the above points. Feel free to ask questions. Regards, Daniel -- Daniel Frey aixigo AG - financial solutions & technology Schloß-Rahe-Straße 15, 52072 Aachen, Germany fon: +49 (0)241 936737-42, fax: +49 (0)241 936737-99 eMail: daniel.frey@aixigo.de, web: http://www.aixigo.de