Move interaction subset predicates out of glm.c into interaction.c

[pspp-builds.git] / src / math / interaction.h

diff --git a/src/math/interaction.h b/src/math/interaction.h
index cd38ae226ea81b6e288c80c6a4aa30aa03e8e066..0fb1f2622298c2b9b741ac6554aa45051644c4c6 100644 (file)
--- a/src/math/interaction.h
+++ b/src/math/interaction.h
@@ -37,6 +37,8 @@ void interaction_destroy (struct interaction *);
 void interaction_add_variable (struct interaction *, const struct variable *);
 void interaction_dump (const struct interaction *);
 void interaction_to_string (const struct interaction *iact, struct string *str);
+bool interaction_is_proper_subset (const struct interaction *x, const struct interaction *y);
+bool interaction_is_subset (const struct interaction *x, const struct interaction *y);
 
 
 struct ccase;