Andy Little wrote:
"Tobias Schwinger" <tschwinger@neoscientists.org> wrote
Btw. Daniel Frey's library looks very interesting - did you take a look at it ?
I looked at it during the math constants review. I didnt look at the latest version, but I have now. Unfortunately it doesnt compile on VC7.1 but looks like a smarter version of my offering. (I guess that 's where the idea for mine came from.) OTOH it doesnt do eg double(pi) which syntax I happen to like.
Me too, but it doesn't work for generic types T. If T has several ctors that take different types (e.g. float, double, T), pi has no way to decide which cast would be appropriate.
It uses expression templates to allow "constant expressions" e.g: 'pi * two' or 'pow(two,one / twelve)'
Hm... I just had the idea of allowing a simple 'constant_<2> two;' to declare integer constants, but immediately ran into a more subtle problem involving two_value. Seems there's still something to redesign, so I have to play with this idea for some time...
Thats interesting . I need this type of thing , but its clumsy in use.
What is clumsy, what would be an improvement? Or a better syntax? Even if it seems impossible, I would like to know what others consider intuitive. If you have an idea how it should look like, please share it.
In an ideal world I guess one would be able to say e.g pow(my_num, n ,d ); and get the function template <typename T, int N, int D > T pow(T,N, D);
Here, I'm at a loss. Can you elaborate, please? Regards, Daniel