initialize persistent variables using Matlab coder

My Matlab code utilizes a few persistent variables and currently uses "isempty" for one of the variables to ensure all are intialized before use. The resulting Matlab coder initialization function sets a bool "var_isempty". This seems rather clunky. To me it seems that the appropriate coder output should instead initialize the values in the static variable definition within the function.

Is there a codegen option to generate the code in this manner? Or another way?

The https://www.mathworks.com/help/coder/ug/use-generated-initialize-and-terminate-functions.html refers to both global and persistent variables witht the -global option. Is this the best method?

Answer 1

[Poorna]

Hi Ian,

I see you want the initilialize persistent variables which get translated to static variables in 'C' right in the definition of the variable in the code. As fas as I know there is no option to generate code to define a static variable within the declaration as of R2024a. But it is to be understood that although using a bool variable to check if the static variable is initialized or not may seem to be a little inefficient, it helps in initializing the static variables in a much more wider cases. Consider the case where the static variable is initialized after doing some computation instead of just assigning it a constant value. Having a separate function would help for you to put all your initialization computation in there separately which cannot be done in the declaration.

Hope this Helps!