User`s guide

Examples of C MEX-File S-Function Blocks
3-59
return; /* Parameter mismatch will be reported by Simulink. */
}
ssSetNumContStates(S, 2);
ssSetNumDiscStates(S, 0);
if (!ssSetNumInputPorts(S, 1)) return;
ssSetInputPortWidth(S, 0, 2);
ssSetInputPortDirectFeedThrough(S, 0, 1);
if (!ssSetNumOutputPorts(S, 1)) return;
ssSetOutputPortWidth(S, 0, 2);
ssSetNumSampleTimes(S, 1);
ssSetNumRWork(S, 0);
ssSetNumIWork(S, 0);
ssSetNumPWork(S, 0);
ssSetNumModes(S, 0);
ssSetNumNonsampledZCs(S, 0);
/* Take care when specifying exception free code - see sfuntmpl.doc. */
ssSetOptions(S, SS_OPTION_EXCEPTION_FREE_CODE);
}
/* Function: mdlInitializeSampleTimes =========================================
* Abstract:
* Specify that we have a continuous sample time.
*/
static void mdlInitializeSampleTimes(SimStruct *S)
{
ssSetSampleTime(S, 0, CONTINUOUS_SAMPLE_TIME);
ssSetOffsetTime(S, 0, 0.0);
}
#define MDL_INITIALIZE_CONDITIONS
/* Function: mdlInitializeConditions ========================================
* Abstract:
* Initialize both continuous states to zero.
*/
static void mdlInitializeConditions(SimStruct *S)
{
real_T *x0 = ssGetContStates(S);
int_T lp;
for (lp=0;lp<2;lp++) {
*x0++=0.0;
}
}
/* Function: mdlOutputs ======================================================
* Abstract:
* y = Cx + Du
*/