code: def test_lstm_update(
      *, dtype_lstm, test_flags, backend_fw, fn_name, on_device
  ):
      (
          dtype,
          x_lstm,
          init_h,
          init_c,
          kernel,
          recurrent_kernel,
          bias,
          recurrent_bias,
      ) = dtype_lstm
      helpers.test_function(
          input_dtypes=dtype,
          test_flags=test_flags,
          backend_to_test=backend_fw,
          fn_name=fn_name,
          on_device=on_device,
          rtol_=1e-01,
          atol_=1e-01,
          x=x_lstm,
          init_h=init_h,
          init_c=init_c,
          kernel=kernel,
          recurrent_kernel=recurrent_kernel,
          bias=bias,
          recurrent_bias=recurrent_bias,
      )
  
imports: from hypothesis import strategies, assume
  import ivy
  import numpy
  import ivy_tests.test_ivy.helpers
  from ivy_tests.test_ivy.helpers import handle_test
  from ivy.functional.ivy.layers import _deconv_length, _pack_padded_sequence
label_desc: Use image node_id 26 for calling a global function with example usage: test_lstm_update() without return types