User`s guide

Examples of C MEX-File S-Function Blocks
3-67
/* Take care when specifying exception free code - see sfuntmpl.doc. */
ssSetOptions(S, SS_OPTION_EXCEPTION_FREE_CODE);
}
/* Function: mdlInitializeSampleTimes =========================================
* Abstract:
* Two tasks: One continuous, one with discrete sample time of 1.0
*/
static void mdlInitializeSampleTimes(SimStruct *S)
{
ssSetSampleTime(S, 0, CONTINUOUS_SAMPLE_TIME);
ssSetSampleTime(S, 1, 1.0);
ssSetOffsetTime(S, 0, 0.0);
ssSetOffsetTime(S, 1, 0.0);
}
#define MDL_INITIALIZE_CONDITIONS
/* Function: mdlInitializeConditions ========================================
* Abstract:
* Initialize both continuous states to zero.
*/
static void mdlInitializeConditions(SimStruct *S)
{
real_T *xC0 = ssGetContStates(S);
real_T *xD0 = ssGetRealDiscStates(S);
xC0[0] = 1.0;
xD0[0] = 1.0;
}
/* Function: mdlOutputs =======================================================
* Abstract:
* y = xD
*/
static void mdlOutputs(SimStruct *S, int_T tid)
{
real_T *y = ssGetOutputPortRealSignal(S,0);
real_T *xD = ssGetRealDiscStates(S);
/* y=xD */
if (ssIsSampleHit(S, 1, tid)) {
y[0]=xD[0];
}
}
#define MDL_UPDATE
/* Function: mdlUpdate ======================================================
* Abstract:
* xD = xC
*/
static void mdlUpdate(SimStruct *S, int_T tid)
{