[Blitz-support] norm() broken in blitz 0.10

[Patrick V. <pat...@gm...>]

Dear all,

I was happily surprised to see today that Blitz has finally been updated to
0.10.  It's a beautiful library, and am glad that it is actively supported.

On upgrading, I noticed that the following kind of code stopped working

blitz::TinyVector<double, 3> vec;
...
double vec_len = norm(vec);

The function norm() seems to be declared somewhere, but there's no body for
it.  The same functionality can be got by writing

double vec_len = sqrt(sum(pow2(vec)));

but norm() is much clearer in intent.  It would be nice if the old norm
function were resurrected, but I don't even know how to begin to do such a
thing.

Thanks,

Patrick