code: def test_against_known_values(self):
      R = fractions.Fraction
      assert_equal(R(1075, 512), R(*np.half(2.1).as_integer_ratio()))
      assert_equal(R(-1075, 512), R(*np.half(-2.1).as_integer_ratio()))
      assert_equal(
          R(4404019, 2097152), R(*np.single(2.1).as_integer_ratio())
      )
      assert_equal(
          R(-4404019, 2097152), R(*np.single(-2.1).as_integer_ratio())
      )
      assert_equal(
          R(4728779608739021, 2251799813685248),
          R(*np.double(2.1).as_integer_ratio()),
      )
      assert_equal(
          R(-4728779608739021, 2251799813685248),
          R(*np.double(-2.1).as_integer_ratio()),
      )
  
imports: import fractions
  import functools
  import sys
  import types
  from typing import Any, Type
  from unittest import skipIf, SkipTest
  import pytest
  from pytest import raises
  from torch.testing._internal.common_utils import instantiate_parametrized_tests, parametrize, run_tests, TEST_WITH_TORCHDYNAMO, TestCase
label_desc: Use image node_id 4 for calling the TestAsIntegerRatio obj's underlying member method code with example usage: obj.test_against_known_values() without return types