User`s guide

Fully Inlined S-Function with the mdlRTW Routine
4-31
} 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);