Testing whether a foreign pointer is to an immediate or aggregate type

Hi

subject says it all.  Is there a simple way to do that?

I want to define something like

	(fli:with-foreign-slots ((a aa) (b bb)) fp (+ a b))

and I would like to actually test that FP is a pointer to an aggregate 
type (better yet, I'd like to test that FP is a pointer to a struct or 
union).

Cheers


--
Marco Antoniotti
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