How to remove the error " Coder error: Found unsupported matrix type at output port: 0"?

I am trying to convert the following function as well as test script to vhdl. I know that Rxyz returns a matrix as output thus the error, but how to remove it? My script uses the output matrix for further calculations.

Rxyz.m is the function and runnew.m is the testbench.

Answer 1

[Tim McBrayer]

Your output is a 3x3 matrix, so one possibility is to return 9 outputs, one for each matrix element. Another more hardware-friendly option is to stream the outputs on a single port. By this I mean have a single output, whose value is time-variant, and sequentially outputs the 9 matrix elements. If you take this approach you will need to keep the inputs stable for 9 calls to your design; each call can generate the next matrix element.