code: def erf(x):
      return np.array(scipy.special.erf(x))
  
imports: import numpy
  from keras.backend import standardize_dtype
  from keras.backend.jax.math import fft
  from keras.backend.jax.math import fft2
  from keras.backend.numpy.core import convert_to_tensor
  from keras.utils.module_utils import scipy
label_desc: Use image node_id 16 for calling a global function with example usage: erf(x) and returns: np