code: def auto_window(taus, c):
      m = np.arange(len(taus)) < c * taus
      if np.any(m):
          return np.argmin(m)
      return len(taus) - 1
  
file_path: emcee/src/emcee/autocorr.py
imports: import logging
  import numpy
label_desc: Use image node_id 3 for calling a global function with example usage: auto_window(taus, c) and returns: unknown, np