Moved static is_origin from design_matrix.c to category.c: cat_is_origin.

[pspp-builds.git] / src / data / category.h

diff --git a/src/data/category.h b/src/data/category.h
index db4bb339bcb5e6ecab1bd0de98a76632dfe20f95..f90ae7cd2809e9b3b96d8968de1c1f1ae71e0610 100644 (file)
--- a/src/data/category.h
+++ b/src/data/category.h
@@ -32,7 +32,7 @@
 
 #ifndef CATEGORY_H
 #define CATEGORY_H
-
+#include <stdbool.h>
 #include <stddef.h>
 
 struct cat_vals;
@@ -61,5 +61,9 @@ cat_get_category_count (const size_t, const struct variable *);
  */
 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