Availability:C-language interface function
int PL_get_name_arity(term_t
+t, atom_t *name, size_t *arity)If t is compound or an atom, the functor name will be
assigned over name and the arity over arity. See
also
PL_get_functor()
and PL_is_functor().
See section 11.3.2.1.