code: def xhash(coeff, exp):
      sign = 1
      if coeff < 0:
          sign = -1
          coeff = -coeff
      if exp >= 0:
          exp_hash = pow(10, exp, _PyHASH_MODULUS)
      else:
          exp_hash = pow(_PyHASH_10INV, -exp, _PyHASH_MODULUS)
      hash_ = coeff * exp_hash % _PyHASH_MODULUS
      ans = hash_ if sign == 1 else -hash_
      return -2 if ans == -1 else ans
  
label_desc: Use image node_id 1 for calling a global function with example usage: xhash(coeff, exp) and returns: unknown