code: def _translate_bisz(self, oprnd1, oprnd2, oprnd3):
          
          assert oprnd1.size and oprnd3.size
  
          op1_var = self._translate_src_oprnd(oprnd1)
          op3_var, op3_var_constrs = self._translate_dst_oprnd(oprnd3)
  
          result = smtfunction.ite(oprnd3.size, op1_var == 0x0, smtsymbol.Constant(oprnd3.size, 0x1),
                                      smtsymbol.Constant(oprnd3.size, 0x0))
  
          return [op3_var == result] + op3_var_constrs
docs: Return a formula representation of a BISZ instruction.