-QI SUBWORDSIQI (SI, int);
-HI SUBWORDSIHI (SI, int);
-QI SUBWORDDIQI (DI, int);
-HI SUBWORDDIHI (DI, int);
-SI SUBWORDDISI (DI, int);
+static QI SUBWORDSIQI (SI, int);
+static HI SUBWORDSIHI (SI, int);
+static QI SUBWORDDIQI (DI, int);
+static HI SUBWORDDIHI (DI, int);
+static SI SUBWORDDISI (DI, int);