Initialize the state vectors of this C MEX S-function
#define MDL_START void mdlStart(SimStruct *S)
SimStruct representing an S-Function block.
The Simulink® engine invokes this optional method at the beginning of a simulation. The method performs initialization activities that this S-function requires only once, such as allocating memory, setting up user data, or initializing states.
If your S-function resides in an enabled subsystem and needs
to reinitialize its states every whenever the subsystem is enabled,
mdlInitializeConditions to initialize the state
values, instead of
an example of how to use this function.