binary to float converter

binary to float converter.rb

class String
  def prettyb
    self.chars.reverse.each_slice(4).map(&:join).join("_").reverse
  end

  def floatify
    string = self.gsub('_', '')

    if string.length % 16 != 0
      raise RuntimeError, "must be a single or a double precision float"
    end

    [string].pack('B*').unpack1('g') 
  end
end