How to convert mexFunction to general c/c++ function

2015 12 17
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更新时间：2015 12 26
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Hi everyone. I am converting mexFunction to general c/c++ function, so that it can be called in another c/c++ function. I think it's the problem dealing with arguments. How can i do it? Thanks in advance.

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Adam
Adam 2015-12-17
It should just be a case of giving the function a proper name and stripping out the mxArray and other Matlab-specific stuff down to the C++ data structures into which you presumably copied the Matlab inputs. Then just pass those into your function instead of the mxArrays.
Farik John
Farik John 2015-12-25
Would you more clarify? Assume i pass the 4-D singles matrix as an argument in matlab function. Then how can i imitate the passing this argument in c function.
James Tursa
James Tursa 2015-12-25
You pass a pointer to the data. Then work with the data through that pointer in your "general" C/C++ code the same way you would in a mex function. What are you planning to do with this 4D array?
Farik John
Farik John 2015-12-25
There are two arguments. One is image array, other is kernel. I am doing convolution with them. So, those are mutidimensional array. Would you put the code here for detail explanation?

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Jan
Jan 2015-12-25

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A clean Mex function uses the mexFunction() function to obtain the pointers to the values of the inputs at first. Then a subsection, or better sub-functions process the data. Finally the mexFunction() creates the outputs for Matlab.
Then it is relatively easy to remove the mexFunction() and use the sub-function for calculations from otehr C-code directly.
But maybe the mexFunction() creates the outputs at first and delivers pointers to allocated arrays to the subfunction. Or the mexFunction() mixes its job as a Matlab-C-gateway with calculations. Then a separation of the Mex and C parts is difficult.

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Farik John
Farik John 2015-12-26
Thank you for your answer. Jan Would you glance at this link? mexfunction source How can i convert this mexfunction as a c sub function. Thanks in advance.

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2015-12-17

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