int isl_set_find_dim_by_id(__isl_keep isl_set *set, enum isl_dim_type type,
__isl_keep isl_id *id);
+int isl_set_find_dim_by_name(__isl_keep isl_set *set, enum isl_dim_type type,
+ const char *name);
int isl_basic_set_is_rational(__isl_keep isl_basic_set *bset);