Update zero-crossing vector
No
C, C++
#define MDL_ZERO_CROSSINGS
void mdlZeroCrossings(SimStruct *S)
S SimStruct representing an S-Function block.
An S-function needs to provide this optional method only if
it does zero-crossing detection. Implementing zero-crossing detection
typically requires using the zero-crossing and mode work vectors to
determine when a zero crossing occurs and how the S-function's outputs
should respond to this event. The mdlZeroCrossings method
should update the S-function's zero-crossing vector, using ssGetNonsampledZCs
You can use the optional mdlZeroCrossings routine
when your S-function has registered the CONTINUOUS_SAMPLE_TIME and
has nonsampled zero crossings (ssGetNumNonsampledZCs(S) >
0). The mdlZeroCrossings routine is used
to provide the Simulink® engine with signals that are to be tracked
for zero crossings. These are typically
Continuous signals entering the S-function
Internally generated signals that cross zero when
a discontinuity would normally occur in mdlOutputs
Thus, the zero-crossing signals are used to locate the discontinuities
and end the current time step at the point of the zero crossing. To
provide the engine with zero-crossing signals, mdlZeroCrossings updates
the ssGetNonsampleZCs(S) vector.
For an example, see sfun_zc_sat.c.
A detailed description of this example can be found in Zero Crossings.