lib/hpsqrt.rb in hpsqrt-1.6.0 vs lib/hpsqrt.rb in hpsqrt-1.7.0

@@ -21,10 +21,11 @@
   def initialize(terms)
     @terms = terms.freeze
     @cache = {}
     freeze
   end
+  private :initialize
 
   def -@
     terms = @terms.map{|t,c| [t, -c]}.to_h
     self.class.new(terms)
   end
@@ -117,12 +118,14 @@
       super.==(other)
     end
   end
 
   def <=>(other)
-    if self==other
+    if !(Numeric===other)
+      nil
+    elsif self==other
       0
-    elsif !self.real? || !other.real?
+    elsif !self.real? || !other.imag.zero?
       nil
     else
       self.real <=> other.real
     end
   end