code: def _get_c_datatype(dtype):
      """Translate LINKABLE_DTYPES element to c datatype."""
      if "int" in dtype:
          return f"{dtype}_t"
      elif dtype == "float32":
          return "float"
      elif dtype == "float64":
          return "double"
      else:
          assert False, f"unknown dtype {dtype}"
  
imports: import collections
  import ctypes
  import json
  import os
  import re
  from contextlib import redirect_stderr
  from io import StringIO
  import numpy
  import tvm
  import tvm.relay
  import tvm.testing
  from tvm import meta_schedule
  from tvm import relay
  from tvm.contrib import utils
  from tvm.relay.backend import Executor, Runtime
label_desc: Use image node_id 8 for calling a global function with example usage: _get_c_datatype(dtype) and returns: dtype, str, str, str