Hi Hans,

if not math.odd then
-   function math.odd (n) return n % 2 == 0 end
-   function math.even(n) return n % 2 ~= 0 end
+   function math.odd (n) return n % 2 ~= 0 end
+   function math.even(n) return n % 2 == 0 end
end

Wolfgang
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