c - Function to get stored callback -


Suppose i have a variable that stores callback. 

  Zero * (* function) (int, double);   
 Now I would like to create a function, which will return this callback. I do not want that the user can access the callback directly but by the function It does not work:  
  zero * (*) (int, double) getCallback ();   
 My question is how would the prototype look like for such a function?  
 
 
  type typed  callback type:  
  typedef void * (* pf) (int, double); Pf getCallback ();   
 This will also ensure that there is no mistake by typing the wrong signature manually.

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