-void levene(const struct casefile *cf,
- struct variable *v_indep, size_t n_dep, struct variable **v_dep,
- enum lev_missing, is_missing_func);
+struct dictionary ;
+struct casefilter ;
+
+void levene(const struct dictionary *dict, struct casereader *,
+ const struct variable *v_indep, size_t n_dep,
+ const struct variable **v_dep,
+ enum mv_class exclude);