code: def test_round_uint64(self, xp):
      a = xp.array([2**63], dtype=xp.uint64)
      return a.round(self.decimals)
  
file_path: cupy/tests/cupy_tests/core_tests/test_ndarray_math.py
imports: import unittest
  import numpy
  from cupy import testing
label_desc: Use image node_id 2 for calling the TestRoundMinMax obj's underlying member method code with example usage: obj.test_round_uint64(xp) and returns: a