1 files changed, 63 insertions, 0 deletions
diff --git a/nilclass.rb b/nilclass.rb
new file mode 100644
index 0000000000..acd5666c71
--- /dev/null
+++ b/nilclass.rb
@@ -0,0 +1,63 @@
+class NilClass
+  #
+  #  call-seq:
+  #     rationalize(eps = nil)  ->  (0/1)
+  #
+  #  Returns zero as a Rational:
+  #
+  #     nil.rationalize # => (0/1)
+  #
+  #  Argument +eps+ is ignored.
+  #
+  def rationalize(eps = nil)
+    0r
+  end
+
+  #
+  #  call-seq:
+  #     to_c -> (0+0i)
+  #
+  #  Returns zero as a Complex:
+  #
+  #     nil.to_c # => (0+0i)
+  #
+  def to_c
+    0i
+  end
+
+  #
+  #  call-seq:
+  #     nil.to_i -> 0
+  #
+  #  Always returns zero.
+  #
+  #     nil.to_i   #=> 0
+  #
+  def to_i
+    return 0
+  end
+
+  #
+  #  call-seq:
+  #     nil.to_f    -> 0.0
+  #
+  #  Always returns zero.
+  #
+  #     nil.to_f   #=> 0.0
+  #
+  def to_f
+    return 0.0
+  end
+
+  #
+  #  call-seq:
+  #     to_r  ->  (0/1)
+  #
+  #  Returns zero as a Rational:
+  #
+  #     nil.to_r # => (0/1)
+  #
+  def to_r
+    0r
+  end
+end