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@@ -40,7 +40,7 @@ class Bignum < Integer
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   def >>(s)
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     s = Type.coerce_to(s, Integer, :to_int)
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     return self << -s if s < 0
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-    if s > self.abs
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+    unless s.is_a?(Fixnum)
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       return  0 if self >= 0
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       return -1 if self <  0
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     end
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@@ -53,9 +53,9 @@ class Bignum < Integer
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     raise RangeError, "Object is out of range for a Fixnum" unless s.is_a?(Fixnum)
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     s < 0 ? __bignum_right_shift__(-s) : __bignum_left_shift__(s) 
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   end
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-
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+  
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   def eql?(value)
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-    return false unless value.kind_of?(Integer)
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+    return false unless value.is_a?(Bignum)
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     self == value
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   end