Availability:C-language interface function
int PL_get_pointer(term_t
+t, void **ptr)Together with PL_put_pointer()
and PL_unify_pointer(),
these functions allow representing a C pointer as a Prolog integer. The
integer value is derived from the pointer, but not equivalent. The
translation aims at producing smaller integers that fit more often in
the tagged integer range. Representing C pointers as integers
is unsafe. The blob API described in section
12.4.9 provides a safe way for handling foreign resources that
cooperates with Prolog garbage collection.