lib/dydx/algebra/set.rb in dydx-0.0.4 vs lib/dydx/algebra/set.rb in dydx-0.0.5

@@ -10,9 +10,16 @@
 require 'dydx/algebra/set/tan'
 
 module Dydx
   module Algebra
     module Set
+      def e0
+        eval("$e0 ||= Num.new(0)")
+      end
+
+      def e1
+        eval("$e1 ||= Num.new(1)")
+      end
       def _(num)
         if num >= 0
           eval("$p#{num} ||= Num.new(num)")
         else
           eval("$n#{-1 * num} ||= Num.new(num)")