X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fmath%2Finteraction.h;h=23bd4f219eaf2813b06f240f91ca27e06ec61a50;hb=85686ff9b5292a10af71b72c57a87df199e1a4ad;hp=ccd6706f51f4252d2c13e99b800cf76edf81a47e;hpb=dc29c57e7908b0bdc6ab84f8aa4b7cb8a780026c;p=pspp

diff --git a/src/math/interaction.h b/src/math/interaction.h
index ccd6706f51..23bd4f219e 100644
--- a/src/math/interaction.h
+++ b/src/math/interaction.h
@@ -33,6 +33,7 @@ struct interaction
 };
 
 struct interaction * interaction_create (const struct variable *);
+struct interaction * interaction_clone (const struct interaction *);
 void interaction_destroy (struct interaction *);
 void interaction_add_variable (struct interaction *, const struct variable *);
 void interaction_dump (const struct interaction *);