#ifndef CATEGORY_H
#define CATEGORY_H
-
+#include <stdbool.h>
#include <stddef.h>
struct cat_vals;
*/
size_t cat_get_n_categories (const struct variable *v);
-
+/*
+ If VAR is categorical with d categories, its first category should
+ correspond to the origin in d-dimensional Euclidean space.
+ */
+bool cat_is_origin (const struct variable *, const union value *);
#endif