How to call Matlab functions from C S functions

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Remus Mihail Prunescu 2012-7-16

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https://ww2.mathworks.cn/matlabcentral/answers/43709-how-to-call-matlab-functions-from-c-s-functions

Hi,

Is it possible to call matlab functions from C S functions? I would need to call fzero and I do not wish to create another C function with the algorithm.

Thanks. Remus.

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Kaustubha Govind 2012-7-16

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https://ww2.mathworks.cn/matlabcentral/answers/43709-how-to-call-matlab-functions-from-c-s-functions#answer_53634

You can use mexCallMATLAB, but will need to create/destroy mxArrays as needed.

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Kaustubha Govind 2012-7-16

在 MATLAB Online 中打开

Please run the following command to see an example of how you can the copy the data from your real_T arrays into mxArrays:

edit([matlabroot '/extern/examples/refbook/arrayFillGetPr.c']);

Remus Mihail Prunescu 2012-7-17

在 MATLAB Online 中打开

It works! Here's an example for a one input, one output matlab function:

mxArray *in[1];
mxArray *out[1];
double *pointer;
    
in[0] = mxCreateNumericMatrix(3, 1, mxDOUBLE_CLASS, mxREAL);
pointer = mxGetPr(in[0]);
pointer[0] = A_T;
pointer[1] = B_T;
pointer[2] = C_T;
mexCallMATLAB(1, out, 1, in, "myMatlabFun");
pointer = mxGetPr(out[0]);
return *pointer;