Hi Bob,
While using MATLAB coder to generate dynamic library (DLL), the input parameter dimensions need to be specified correctly. When you run the MATLAB coder app it asks you to define input types. You can enter a script that calls the “test” function here and MATLAB coder will define the input types for you. Check the snapshot below to understand how you can achieve this -
Also, while calling the “test” function you need to pass the output pointer also with pre-allocated space for 1x2 output. Check the code below to understand how to achieve this -
% Define input data
in1 = [1 2];
in2 = [3 4];
out = libpointer('doublePtr', zeros(1, 2)); % Allocate space for 1x2 output
% Call the function
calllib('test', 'test', in1, in2, out);
% Display the result
disp(out.value);
