Use nargin/nargout on generated mex Functions

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Stefan
Stefan on 19 Dec 2012
Answered: Mike Hosea on 27 Mar 2014
Hello,
I am currently facing the problem that I would like to apply the nargin/nargout function to a mex function I generated.
Usually one can use them in order get the number of inputs/outputs from outside the function. This works for example as follows:
>>nargin(@sum)
>>nargout(@sum)
When I use these functions on a generated mex function i get the following error:
>> Error using nargout
>> xyz_coder_mex does not know how to answer nargin/nargout.
Does anyone know a workaround or is it generally not possible to access these parameters of a mex function?
Greetings, Stefan
  1 Comment
Stefan
Stefan on 19 Dec 2012
I found a workaround:
One can program a wrapper function, which is calling the mex function
e.q.
-----
function [a,b,c] = xyz_coder_wrapper(d,e,f)
[a,b,c] = xyz_coder_mex(d,e,f)
-----
Thereby one can use its knowledge of the underlying MATLAB/c function

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Answers (1)

Mike Hosea
Mike Hosea on 27 Mar 2014
Not sure why this question slipped through unnoticed. I've created an enhancement request to make nargin and nargout work when given a function handle to a MATLAB Coder generated mex file.

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