How to add a C header file to the C-Mex S-function?

Dear all,

I'm trying to convert a C programme to C-Mex S-function used by RTW. But there are many coustom functions in the original C programme, how do I define these functions in C-Mex S-function which can be compiled by RTW?

 (1)is it feasible to write the function before  the statement  "static void mdlInitializeSizes(SimStruct *S)" in C-Mex S-function? Then the functions can be call in this C-Mex S-function file? Like:

                   #define S_FUNCTION_NAME  Realnlmpc
                   #define S_FUNCTION_LEVEL 2    
                   #include "simstruc.h"
                   #include <stdlib.h>    
                   void function1(int a,int b)
                  {
                      }    
                   void function2(int c,int d)
                  {
                      }  
                 static void mdlInitializeSizes(SimStruct *S)
                {
                      }
(2)convert each C function to C-Mex file,then use the mexCallMATLAB command to call the functions from C-Mex S-function, but I want to know  can the files in this way be compiled by RTW Target and xPC Target？
(3)convert the C functions to C header files and include the header in the C-Mex S-function, But I don't know how to add the header files to the C-Mex S-function.

Your help will be greatly appreciated! Thank you very much!

Yi Mu

Answer 1

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Better you use the Legacy code tool or S-function builder for such requirement. They can create the s-function which calls your existing functions.

Also for code generation inlining TLC file is required for s-function. Above tools generates TLC files also which will save your time in writting TLCs.