code: def test_logical_ufuncs_casts_to_bool(self, ufunc):
      a = self._get_array(2.0)
      a[0] = 0.0  # make sure first element is considered False.
  
      float_equiv = a.astype(float)
      expected = ufunc(float_equiv, float_equiv)
      res = ufunc(a, a)
      assert_array_equal(res, expected)
  
      # also check that the same works for reductions:
      expected = ufunc.reduce(float_equiv)
      res = ufunc.reduce(a)
      assert_array_equal(res, expected)
  
      # The output casting does not match the bool, bool -> bool loop:
      with pytest.raises(TypeError):
          ufunc(a, a, out=np.empty(a.shape, dtype=int), casting="equiv")
  
imports: import pytest
  import numpy
  from numpy.testing import assert_array_equal
  from numpy.core._multiarray_umath import _discover_array_parameters, _get_sfloat_dtype
label_desc: Use image node_id 18 for calling the TestSFloat obj's underlying member method code with example usage: obj.test_logical_ufuncs_casts_to_bool(ufunc) without return types