[fpc-pascal] Porting C macro

[Darius Blaszyk]

I'm stuck porting a macro from C. Below is the original define. The
part I'm struggeling with is the right most part after the - sign.


#define GETNEXT(x) ((LList *)(((char *) x) - ((char *) & (((LList
*)0)^.next))))

Does anyone know what is meant with the define?
Obviously LList is a linked list struct that has a prev and next
variable. But what does the & and 0 mean?

Appreciate any
help.

Regards, Darius 
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