code: def sqrt(self):
      r"""
      Computes the square root of the input by computing its inverse square root using
      the Newton-Raphson method and multiplying by the input.
  
      Configuration params:
          sqrt_nr_iters (int):  determines the number of Newton-Raphson iterations to run
          sqrt_initial (tensor): sets the initial value for the inverse square root
              Newton-Raphson iterations. By default, this will be set to allow convergence
              over a fairly large domain.
  
      .. _Newton-Raphson:
          https://en.wikipedia.org/wiki/Fast_inverse_square_root#Newton's_method
      """
      return inv_sqrt(self).mul_(self)
  
imports: import math
  import torch
  from fate.arch.protocol import mpc
  from ..common.util import chebyshev_series
  from ..config import cfg
label_desc: Use image node_id 5 for calling a global function with example usage: sqrt() and returns: inv_sqrt