S-function builder external function

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Anurag Goyal
Anurag Goyal on 20 Oct 2017
Commented: Walter Roberson on 20 Oct 2017
I am trying to solve a system of ODEs using S-function builder in Simulink to program the system of equations. The system of equations use an external MATLAB function that I programmed separately. The external function can be called from a MEX compiled code that uses base functions written in C++. I was wondering if the external function prompt in the S-function builder would allow for using the compiled MEX code and call the aforementioned MATLAB function so I can integrate it into my system of ODEs.
Thank you
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Walter Roberson
Walter Roberson on 20 Oct 2017
mex is used to compile C, C++ or Fortran.
Have you looked at the Symbolic Toolbox facilities for odes? In particular, you can build ODE symbolically, and then go through a couple of steps to convert them into MATLAB functions that can be called with ode45*() or the like.

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