code: def _fake_crfft(x, n, *a, **kw):
      if _is_safe_size(n):
          return _fftpack.crfft(x, n, *a, **kw)
      else:
          return _fftpack.zrfft(x, n, *a, **kw).astype(numpy.complex64)
  
imports: from __future__ import division, print_function, absolute_import
  from numpy import swapaxes, zeros
  import numpy
  from .None import _fftpack
  from scipy.fftpack.helper import _init_nd_shape_and_axes_sorted
  import atexit
label_desc: Use image node_id 4 for calling a global function with example usage: _fake_crfft(x, n) and returns: _fftpack, _fftpack