how to define const double in a templated class

[PengYu.UT]

Hi,

The following code does not work. Is anyway to make this work?

Thanks,
Peng

enum dirflags {
deg0,
deg45,
deg90,
deg135,
deg180,
deg_135,
deg_90,
deg_45,
N
};

template <dirflags I>
struct angle {
const double theta = I * M_PI / N;
};