How to deal with functions that are not supported in HDL coder?

I am using HDL coder to generate Verilog code from Matlab algorithms. But I am getting the following error while trying to execute the 'Verify with Cosimulation' step :-

The function 'coder' is not supported for standalone code generation. See the documentation for coder.extrinsic to learn how you can use this function in simulation.

I have the Mentor Graphics Modelsim student version installed in my system and have linked it with Matlab.

Please help me out in dealing with the issue.

Thanks in advance.

Answer 1

[Kaustubha Govind]

If you are using coder.extrinsic to call a function in your MATLAB code, it is likely that the function is not supported for code-generation. You will need to remove that call to be able to generate code from it.

Answer 2

[Tim McBrayer]

One way to replace the use of coder.extrinsic is to replace the behavior of your call with a lookup table. This works best when you have a well defined range of possible inputs to your function. There is some effort that needs to be put into defining a lookup table, trading off suitable accuracy with the desire to minimize the table size.