Matlab Simulink s-function handling of matrix (2D) type parameters

To demonstrate Matlab Simulink s-function handling of matrix (2D) type parameters, I prepared the following demo. The input is a constant block with "Interpret vector parameters as 1-D" unchecked and value [11, 12; 21, 22; 31, 32]:

	#define S_FUNCTION_NAME mySFunction
	#define S_FUNCTION_LEVEL 2
	#ifdef __cplusplus
	extern "C" {
	#endif
	#include "math.h"
	#include "simstruc.h"
	#ifdef __cplusplus
	}
	#endif
	static void mdlInitializeSizes( SimStruct *S ) {
	const int nbInputPorts = 1;
	if (!ssSetNumInputPorts(S, nbInputPorts)) return;
	for (int i = 0; i<nbInputPorts; i++) {
	ssSetInputPortDirectFeedThrough(S, i, 1); //to use this input port in mdlOutputs. If you do not specify this, input returned in mdlUpdate will be null, Matlab might crash. Has effect only after ssSetNumInputPorts is called.
	ssSetInputPortRequiredContiguous(S, i, 1); //allows a method to access elements of the signal (array) by incrementing the signal pointer returned by ssGetInputPortSignal.
	}
	ssSetInputPortMatrixDimensions(S, 0, 3, 2); //Matrix input
	}
	static void mdlOutputs( SimStruct *S, int_T tid ){//Invoked at each time step (not just major time steps).
	printf("Hello from s-function, mdlOutputs()!\n");//Note that printf in mdlStart() and mdlInitializeSizes() has not effect.
	real_T time_s = ssGetT(S);
	int_T* matrixDimensions = ssGetInputPortDimensions(S, 0);
	int_T nRow = matrixDimensions[0];
	int_T nCol = matrixDimensions[1];
	real_T* myMatrix = (real_T*) ssGetInputPortSignal(S, 0);
	printf("time_s = %1.3f, nRow = %d, nCol = %d\n", time_s, nRow, nCol);
	for(int i=0; i<nRow; i++) {
	for(int j=0; j<nCol; j++) {
	printf("myMatrix[%d][%d] = %1.1f, ", i, j, myMatrix[i+j*nRow]);
	}
	printf("\n");
	}
	}
	/*Obligatory Simulink code*/
	static void mdlInitializeSampleTimes(SimStruct *S) { }
	#define MDL_INITIALIZE_CONDITIONS
	static void mdlInitializeConditions(SimStruct *S) {}
	#define MDL_START
	#if defined(MDL_START)
	static void mdlStart(SimStruct *S) {}
	#endif /* MDL_START */
	#define MDL_UPDATE
	static void mdlUpdate( SimStruct *S, int_T tid ) { //Invoked at each major simulation time step.
	}
	static void mdlTerminate( SimStruct *S ) {
	UNUSED_ARG(S); /* unused input argument */
	}
	#ifdef MATLAB_MEX_FILE
	#include "simulink.c"
	#else
	#include "cg_sfun.h"
	#endif

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