1 files changed, 5 insertions, 10 deletions
diff --git a/rational.c b/rational.c
index 4b6e2ea0ca..019104839c 100644
--- a/rational.c
+++ b/rational.c
@@ -377,17 +377,16 @@ f_rational_new_bang2(VALUE klass, VALUE x, VALUE y)
     return nurat_s_new_internal(klass, x, y);
 }
 
+#ifdef CANONICALIZATION_FOR_MATHN
 #define CANON
+#endif
+
 #ifdef CANON
 static int canonicalization = 0;
 
 void
-nurat_canonicalize(int f)
+nurat_canonicalization(int f)
 {
-    VALUE s = rb_const_get(rb_cObject, rb_intern("RUBY_VERSION"));
-    Check_Type(s, T_STRING);
-    if (rb_str_cmp(s, rb_str_new2("2.0.0")) >= 0)
-	rb_bug("no longer provide canonicalization");
     canonicalization = f;
 }
 #endif
@@ -1543,11 +1542,7 @@ Init_Rational(void)
 
     rb_define_method(rb_cRational, "div", nurat_idiv, 1);
 
-#ifndef NUBY
-#define NUBY 0
-#endif
-
-#if NUBY
+#if 0 /* NUBY */
     rb_define_method(rb_cRational, "//", nurat_idiv, 1);
 #endif