code: def setUp(self):
      if self.dtype == numpy.float16:
          self.check_backward_options.update(
              {
                  "atol": 1e-3,
                  "rtol": 1e-3,
              }
          )
  
file_path: chainer/tests/chainer_tests/functions_tests/array_tests/test_where.py
imports: import unittest
  import numpy
  import pytest
  import chainer
  from chainer import functions
  from chainer import testing
  from chainer.utils import type_check
label_desc: Use image node_id 1 for calling the TestWhere obj's underlying member method code with example usage: obj.setUp() without return types