code: def dummy_fn(x):
      return torch.sigmoid(x + math.pi) / 10.0
  
imports: import math
  import unittest
  import torch
  from torch._dynamo.test_case import run_tests, TestCase
  from torch._inductor import config
  from torch.testing._internal.inductor_utils import HAS_CPU
label_desc: Use image node_id 1 for calling a global function with example usage: dummy_fn(x) and returns: unknown