[PD] Matrix in pd

[lucaturchet1982 at libero.it]

Help!
I need to use some matrices to do some real-time 
calculations in a pd patch.

Are there some pd-libraries that implements matrix objects?

Where can I found it? Are they efficient?

In fact I need to do multiplications in real-time
and the efficience of calcoulation is a strict requirement
(In particular I have to multiplicate inputs for a matrix in order to obtain outputs that are parameters of input for a sound synthetizer...).


Thanks in advance.

Luca