Dynamic Functions with or without args?

gistfile1.ex

    defmodule DynaFuncs do
     
      #this works - dynamic name with no args
      {:ok, other_func_name} = Code.string_to_quoted(:half)
      def unquote(other_func_name), do: IO.puts(1/2)

      # but this doesn't work - static name with no args
      def unquote(:one_third), do: IO.puts(1/3)

      # and this works - static name with args
      def unquote(:reciprocal)(num), do: IO.puts(1/num)

      # but this doesn't work - dynamic name with args
      {:ok, funcname} = Code.string_to_quoted(:multiplicative_inverse)
      def unquote(funcname)(num), do: IO.puts(1/num)

    end