class_docstr: For testing Cast F16  to F32 Slice ops
class_docstr_tok: ["For","testing","Cast","F16","to","F32","Slice","ops"]
code: def expected_output_np(self, input_np):
      ref_np = input_np.astype("float32")
      return ref_np
  
file_path: tvm/tests/python/contrib/test_hexagon/topi/slice_op/test_cast_slice.py
imports: import pytest
  import numpy
  import tvm
  import tvm.testing
  from tvm import te
  import tvm.topi.hexagon.slice_ops
  from tvm.contrib.hexagon import allocate_hexagon_array
  from ...infrastructure import transform_numpy, get_hexagon_target
label_desc: Use image node_id 3 for calling the TestCastF16F32Slice2d obj's underlying member method code with example usage: obj.expected_output_np(input_np) and returns: ref_np