Change how checking for missing values works.

[pspp] / src / math / interaction.c

diff --git a/src/math/interaction.c b/src/math/interaction.c
index c39a0b4846f9233a36188fd7ed50a13c18788829..e61ab14e915565c284564e3359c6d15f09c13581 100644 (file)
--- a/src/math/interaction.c
+++ b/src/math/interaction.c
@@ -199,8 +199,8 @@ interaction_case_is_missing (const struct interaction *iact,
                              const struct ccase *c, enum mv_class exclude)
 {
   for (size_t i = 0; i < iact->n_vars; ++i)
-    if (var_is_value_missing (iact->vars[i], case_data (c, iact->vars[i]),
-                              exclude))
+    if (var_is_value_missing (iact->vars[i], case_data (c, iact->vars[i]))
+        & exclude)
       return true;
 
   return false;