code: def test_round_minmax(self, xp, dtype):
      a = xp.array(
          [xp.iinfo(dtype).min, xp.iinfo(dtype).max], dtype=dtype
      )
      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 3 for calling the TestRoundMinMax obj's underlying member method code with example usage: obj.test_round_minmax(xp, dtype) and returns: a