code: def test_zetac_special_cases():
      assert sc.zetac(np.inf) == 0
      assert np.isnan(sc.zetac(-np.inf))
      assert sc.zetac(0) == -1.5
      assert sc.zetac(1.0) == np.inf
  
      assert_equal(sc.zetac([-2, -50, -100]), -1)
  
file_path: scipy/scipy/special/tests/test_zeta.py
imports: import scipy.special
  import numpy
  from numpy.testing import assert_equal, assert_allclose
label_desc: Use image node_id 3 for calling a global function with example usage: test_zetac_special_cases() without return types