# File lib/rdoc/stats.rb, line 197
  def percent_doc
    return @percent_doc if @percent_doc

    @fully_documented = (@num_items - @doc_items) == 0

    @percent_doc = @doc_items.to_f / @num_items * 100 if @num_items.nonzero?
    @percent_doc ||= 0

    @percent_doc
  end