code: def byte_bounds(a):
      """Returns pointers to the end-points of an array.
  
      Args:
          a: ndarray
      Returns:
          Tuple[int, int]: pointers to the end-points of an array
  
      .. seealso:: :func:`numpy.byte_bounds`
      """
      a_low = a_high = a.data.ptr
      a_strides = a.strides
      a_shape = a.shape
      a_item_bytes = a.itemsize
  
      for shape, stride in zip(a_shape, a_strides):
          if stride < 0:
              a_low += (shape - 1) * stride
          else:
              a_high += (shape - 1) * stride
  
      a_high += a_item_bytes
      return a_low, a_high
  
label_desc: Use image node_id 1 for calling a global function with example usage: byte_bounds(a) and returns: a_low,  a_high