--- ginac/numeric.h	2000/03/01 18:32:45	1.27
+++ ginac/numeric.h	2000/03/15 19:28:41	1.28
@@ -188,10 +188,10 @@
     int to_int(void) const;
     long to_long(void) const;
     double to_double(void) const;
-    numeric real(void) const;
-    numeric imag(void) const;
-    numeric numer(void) const;
-    numeric denom(void) const;
+    const numeric real(void) const;
+    const numeric imag(void) const;
+    const numeric numer(void) const;
+    const numeric denom(void) const;
     int int_length(void) const;
 
 // member variables