X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=src%2Fmath%2Finteraction.h;h=66025b6628f428d012ff879268f00367e3a26a1f;hb=5c3291dc396b795696e94f47780308fd7ace6fc4;hp=73b440be32b014cc4da06c715266efb1b4e6da18;hpb=c6fe58a22249f4f486b42f35fd8bd537c91e8e6e;p=pspp-builds.git

diff --git a/src/math/interaction.h b/src/math/interaction.h
index 73b440be..66025b66 100644
--- a/src/math/interaction.h
+++ b/src/math/interaction.h
@@ -27,7 +27,7 @@ struct interaction_value * interaction_value_create (const struct interaction_va
 void interaction_value_destroy (struct interaction_value *);
 size_t interaction_variable_get_n_vars (const struct interaction_variable *);
 double interaction_value_get_nonzero_entry (const struct interaction_value *);
-union value * interaction_value_get (const struct interaction_value *);
+const union value *interaction_value_get (const struct interaction_value *);
 const struct variable * interaction_variable_get_var (const struct interaction_variable *);
 size_t interaction_get_n_numeric (const struct interaction_variable *);
 size_t interaction_get_n_alpha (const struct interaction_variable *);