code: def next_pow_two(n):
      """Returns the next power of two greater than or equal to `n`"""
      i = 1
      while i < n:
          i = i << 1
      return i
  
file_path: emcee/src/emcee/autocorr.py
imports: import logging
  import numpy
label_desc: Use image node_id 1 for calling a global function with example usage: next_pow_two(n) and returns: i