code: def prepow2(A):
      """A helper function to calculate the next nearest number to the power of 2.
  
      Parameters
      ----------
      A : float
          A float number that is going to be rounded up to the nearest power of 2
  
      Returns
      -------
      int
          The nearest power of 2 to the input number ``A``
  
      Examples
      --------
  
      >>> nextpow2(6)
      3
      """
  
      return int(np.floor(np.log2(A)))
  
imports: import sys
  import torch
  from torch.nn.functional import conv1d, fold
  import numpy
  from time import time
  import math
  from scipy.signal import get_window
  from scipy import signal
  from scipy.fftpack import fft
  import warnings
  from nnAudio.librosa_functions import *
label_desc: Use image node_id 9 for calling a global function with example usage: prepow2(A) and returns: int