🚀 go-pugleaf

I have a problem by executing a function:

I want to execute a "unknown" function corresponding to an user input.
This function exist in the complete executabel program, but the main
part did not know about. So, it is impossible to do it this way:

struct init {
  char *fname;
 double (*fnctn)(...);
};
struct init arith_fncts[] = {
 "sin", sin
      :
};

Suppose that this "calculator" should be able to call any user-defined
function, which is linked to the main program, e.g. by a library.


So, doe's there exist the possibility to get the corresponding function pointer
by the name of the function, e.g.:

typedef double (*Fnctn)(...);
Fnctn fnctn;

fnctn = get_function_pointer (char*);

where (char*) is the name of a funtion.

Thanks in advance for your help,
  Uwe Jasnoch