/* callback.h */ #ifndef _callback_#define _callback_ #include "mlvalues.h"		/* for Field, Reference_tag etc */#include "fail.h"		/* for failwith */#include "memory.h"		/* for alloc_shr */#include "alloc.h"		/* for copy_string */#include "minor_gc.h"		/* for minor_collection */#include "interp.h"		/* for callback */ typedef value valueptr;		/* An 'a option ref */ EXTERN valueptr get_valueptr(char* nam);EXTERN value get_value(valueptr mvp);EXTERN value callbackptr(valueptr closureptr, value arg1);EXTERN value callbackptr2(valueptr closureptr, value arg1, value arg2);EXTERN value callbackptr3(valueptr closureptr, value arg1, value arg2, 			  value arg3);EXTERN void registervalue(char* nam, value mlval);EXTERN void unregistervalue(char* nam); EXTERN void registercptr(char* nam, void* cptr); #endif /* _callback_ */