# File rexml/source.rb, line 194
    def utf16(str)
      array_enc=str.unpack('C*')
      array_utf8 = []
      2.step(arrayEnc.size-1, 2){|i| 
	array_utf8 << (array_enc.at(i+1) + array_enc.at(i)*0x100)
      }
      array_utf8.pack('U*')
    end