MATLAB SIMULINK 7 - DEVELOPING S-FUNCTIONS Podręcznik Użytkownika Pobierz pdf (Strona 197)

Fully Inlined S-Function with the mdlRTW Routine

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} else { /* XData is ‘unevenly-spaced’ */

for (i = 1; i < numEl; i++) {

if (xData[i] <= xData[i-1]) {

ssSetErrorStatus(S,”X-vector must be a strictly “

“monotonically increasing vector”);

return;

}

#endif /* MDL_CHECK_PARAMETERS */

/* Function: mdlInitializeSizes ================================================

* Abstract:

* The sizes information is used by Simulink to determine the S-function

* block’s characteristics (number of inputs, outputs, states, etc.).

static void mdlInitializeSizes(SimStruct *S)

{

ssSetNumSFcnParams(S, NUM_PARAMS); /* Number of expected parameters */

* Check parameters passed in, providing the correct number was specified

* in the S-function dialog box. If an incorrect number of parameters

* was specified, Simulink will detect the error since ssGetNumSFcnParams

* and ssGetSFcnParamsCount will differ.

* ssGetNumSFcnParams - This sets the number of parameters your

* S-function expects.

* ssGetSFcnParamsCount - This is the number of parameters entered by

* the user in the Simulink S-function dialog box.

#if defined(MATLAB_MEX_FILE)

if (ssGetNumSFcnParams(S) == ssGetSFcnParamsCount(S)) {

mdlCheckParameters(S);

if (ssGetErrorStatus(S) != NULL) {

return;

}

} else {

return; /* Parameter mismatch will be reported by Simulink */

}

#endif

ssSetNumContStates(S, 0);

ssSetNumDiscStates(S, 0);

if (!ssSetNumInputPorts(S, 1)) return;

ssSetInputPortWidth(S, 0, DYNAMICALLY_SIZED);

ssSetInputPortDirectFeedThrough(S, 0, 1);

ssSetInputPortTestPoint(S, 0, FALSE);

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MATLAB SIMULINK 7 - DEVELOPING S-FUNCTIONS Podręcznik Użytkownika Strona 197