Invoke the external mode function for an S-function
void ssCallExternalModeFcn(SimStruct *S, SFunExtModeFcn *fcn)
SSimStruct representing an S-Function block.
fcnExternal mode function.
An error character vector on failure, and NULL if
successful.
Invokes the external mode function for S. This macro is for
internal use. User-written S-functions should not use the
ssCallExternalModeFcn macro.
C, C++