Hello lim daehee,
As per my understanding, the initial value of the variable ‘res’ in your C code is to be set.
In this case, you can modify the code as follows:
void GetVar(double a, double* res)
static double initial_value = 0.0; // Set the initial value here
static int initialized = 0; // Flag to check if the initial value is set
In the modified code, we introduce a ‘static’ variable ‘initial_value’ to hold the initial value of ‘res’. By default, ‘initial_value’ is set to 0.0, but you can change it to any desired initial value.
Additionally, we introduce a ‘static’ flag variable initialized to ensure that the initial value is set only once. The first time ‘GetVar’ is called, it checks if ‘initialized’ is 0. If it is, the initial value is assigned to ‘res’, and initialized is set to 1 to indicate that the initial value has been set.
By using this approach, the initial value of ‘res’ will be set only once, and subsequent calls to ‘GetVar’ will update ‘res’ based on its previous value.
In case you further require a more specific solution tailored to your case, you can provide more information.
You can also refer the following documentation about how to initialize static variable in C caller blocks during simulation for more details:
I hope it helps!
