Using global constants within a package

[Damian Nadales]

Hello,

I am writting an Octave package, and in several functions I need to
use a 3x3 constant matrix to perform some calculations. My question is
what is the best way of defining this constant.

The best option I can come up with till now is to define a private
function that returns the constant. But this may require some
unnecessary copy operations.

Thanks in advance,
Damian.