Why is there a different syntax in the documentation for the S-function callback method mdlSetDefa​ultPortDim​ensionInfo in Simulink 6.0 (R14) and the example listed in the reference sfun_matadd.c?

The online help documentation for the C S-function API method: mdlSetDefaultPortDimensionInfo conflicts with the example listed:

 matlabroot/simulink/src/sfun_matadd.c

The documentation defines the usage syntax, to be:

   mdlSetDefaultPortDimensionInfo(SimStruct *S, int_T port)

However when you look at the standard C S-function template document:

 matlabroot/simulink/src/sfuntmpl_doc.c

and the example file mentioned, It only uses 1 input argument:

static void mdlSetDefaultPortDimensionInfo(SimStruct *S).

What is the correct usage syntax?

Answer 1

[MathWorks Support Team]

This is an error within the documentation for Simulink within the S-function callback method mdlSetDefaultPortDimensionInfo. The documentation should read as follows:

Syntax

void mdlSetDefaultPortDimensionInfo(SimStruct *S)