code: def test_rel_entr(self, xp, scp, dtype):
      import scipy.special  # NOQA
  
      values = (0, 0.5, 1.0)
      signs = [-1, 1]
      arr = []
      for sgna, va, sgnb, vb in itertools.product(
          signs, values, signs, values
      ):
          arr.append((sgna * va, sgnb * vb))
      z = xp.asarray(numpy.array(arr, dtype=dtype))
      return scp.special.kl_div(z[:, 0], z[:, 1])
  
file_path: cupy/tests/cupyx_tests/scipy_tests/special_tests/test_convex_analysis.py
imports: import itertools
  import unittest
  import cupy
  import numpy
  from cupy import testing
  import cupyx.scipy.special
label_desc: Use image node_id 4 for calling the TestSpecialConvex obj's underlying member method code with example usage: obj.test_rel_entr(xp, scp, dtype) and returns: scp