code: def truncate(x, y):
      """Protocol to divide an ArithmeticSharedTensor `x` by a constant integer `y`
      using RSS (see ABY3 Figure 2: https://eprint.iacr.org/2018/403.pdf).
  
      Note: This is currently supported under 3PC only. This is because the protocol
      requires 2-out-of-N secret sharing since only 2 parties can perform division to
      provide statistical guarantees equivalent to 2-out-of-2 truncation.
      """
      if comm.get().get_world_size() != 3:
          raise NotImplementedError(
              "RSS truncation is only implemented for world_size == 3."
          )
  
      rank = x.rank
  
      if rank == 0:
          x.share = x.share.div(y, rounding_mode="trunc")
      elif rank == 1:
          x2 = comm.get().recv(x.share, 2)
          x.share = x.share.add(x2).div(y, rounding_mode="trunc")
      elif rank == 2:
          comm.get().send(x.share, 1)
          x.share -= x.share
  
      # Add PRZS - this takes the place of r
      x.share += x.PRZS(x.size(), device=x.device).share
  
      return x
  
file_path: CrypTen/crypten/mpc/primitives/replicated.py
imports: import crypten.communicator
  import torch
label_desc: Use image node_id 10 for calling a global function with example usage: truncate(x, y) and returns: x