# File lib/rhc/helpers.rb, line 42
    def human_size( s )
      return "unknown" unless s
      s = s.to_f
      i = PREFIX.length - 1
      while s > 500 && i > 0
        i -= 1
        s /= 1000
      end
      ((s > 9 || s.modulo(1) < 0.1 ? '%d' : '%.1f') % s) + ' ' + PREFIX[i]
    end