code: def approx(x, b=None):
      if b is None:
          b = 10.0
      div = float(x) / b
      rounded = (
          int(div) + 1 if div - float(int(div)) >= 0.5 else int(div)
      )
      return int(b) * rounded
  
file_path: pyro/examples/rsa/hyperbole.py
imports: import argparse
  import collections
  import torch
  from search_inference import HashingMarginal, Search, memoize
  import pyro
  import pyro.distributions
  import pyro.poutine
label_desc: Use image node_id 2 for calling a global function with example usage: approx(x, b) and returns: unknown