code: def abs(self):
      """Computes the absolute value of a tensor"""
      return self * self.sign()
  
file_path: FATE/python/fate/arch/protocol/mpc/functions/logic.py
imports: from fate.arch.protocol import mpc
  from ..common.tensor_types import is_tensor
label_desc: Use image node_id 8 for calling a global function with example usage: abs() and returns: unknown