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run s-function in mfile

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haMed
haMed 2012-2-7
hi Is it possible to run a written s-function in mfile code? I mean a provided code

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回答（3 个）

Titus Edelhofer
Titus Edelhofer 2012-2-7
Hi,
it depends. Level-1 S-functions in MATLAB are just simple MATLAB functions. If you call with the correct input parameters, it will work. Level-2 S-functions in MATLAB or in C will be more difficult, since providing the correct input parameters will be more difficult (MATLAB) or hardly possible (C). Perhaps you could describe in more detail what you are trying to do/achieve.
Titus
haMed
haMed 2012-2-7
Actually I am looking for a provided function/code to run a Lvl1 S-function from the mfile, if exist! I know it is simple to implement but have not any time to think :)
Titus Edelhofer
Titus Edelhofer 2012-2-7
Hmm, there is indeed not much to be done: the function header of an S-function looks like this:
[sys,x0,str,ts,simStateCompliance] = sfun(t,x,u,flag)
where t is Time, x is the state vector, u the input and flag a value what to compute. E.g. for computing the output function:
sys = sfun(0, [], 42.0, 2);
assuming that it is a function without continous or discrete states ...
Titus

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