Hi everybody, this is just to let you know that I've now committed the new version of static_log2<> to the boost sandbox:
http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/boost-sandbox/boost-sandbox/boost/integer/static_log2.hpp and a bunch of new traits to the Yahoo files section: http://groups.yahoo.com/group/boost/files/MoreTraits.zip Besides some templates that could IMHO be useful to improve the portability of detail/limits.hpp (width<> and precision<>) there are two simple knick-knacks, const_min<> and const_max, that I would like to take the place of the analogous components in the Integer library. Here's a complete list of the zip contents: - const_max<>, const_min<> Give maximum and minimum value of a built-in integral type as integral constants. Differently from the traits already available in Boost.Integer they don't use derivation from std::numeric_limits. - has_sign<> Tells whether the type can represent negative values. Probably useful before they clarify whether numeric_limits<T> :: is_signed tells for built-in types the same information than this, or just says whether T is one of the four signed types listed in 3.9.1 [to illustrate the difference: char is not a "signed integer type"; but it can have negative values on many implementations] BTW, there's something similar to this in detail/numeric_traits.hpp, so it could be useful at least to refactor that code (Incidentally: Dave, the comment there seem to reveal that intent was for it to work for UDTs too. Of course it doesn't even work for built-in floating points.) - padding.hpp Gives the number of bits of an integral type that do not contribute to represent the value. - promoted.hpp Gives the promoted type for an rvalue expression of integral or floating point type. Example: promoted<bool>::type // -> int promoted<char>::type // -> int or unsigned int, // depending on the implementation - wchar_min_max.hpp Implementation detail to make up for broken libraries lacks. - unit_test.cpp/.hpp Obvious purpose. Any comments will be greatly appreciated. Genny. _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost
