# File lib/filesize.rb, line 78
  def pretty(args = {})
    size = @bytes
    if size < @type[:multiplier]
      unit = "B"
    else
      pos = (Math.log(size) / Math.log(@type[:multiplier])).floor
      pos = @type[:prefixes].size-1 if pos > @type[:prefixes].size - 1

      unit = @type[:prefixes][pos-1] + "B"
    end

    to_s(unit, args)
  end