Specify whether an output port can share its memory buffer with an input port
void ssSetOutputPortOverwritesInputPort(SimStruct *S, int_T outIdx, int_T inIdx)
The argument inIdx tells the Simulink® engine which input port of S can share its memory with the output port specified by outIdx. inIdx can have the following values:
Index of an input port of S that can share its memory with the specified output port.
You must use ssSetInputPortOverWritable to tell the engine that the specified input port can share its memory with an output port.
The output port can share its memory with any input port.
The output port must have its own memory buffer.