docs: def elfhash(s):
      """
      :param string: bytes
  
      >>> import base64
      >>> s = base64.b64encode(b'hello world')
      >>> elfhash(s)
      224648685
      """
      hash = 0
      x = 0
      for c in s:
          hash = (hash << 4) + c
          x = hash & 0xF0000000
          if x:
              hash ^= (x >> 24)
              hash &= ~x
      return (hash & 0x7FFFFFFF)