code: def gelu(input, *, approximate="none"):
      if approximate == "none":
          return ivy.gelu(input, approximate=False)
      elif approximate == "tanh":
          return ivy.gelu(input, approximate=True)
      else:
          raise ivy.utils.exceptions.IvyException(
              "`approximate` argument must be either 'none' or 'tanh'."
          )
  
imports: import ivy
  from ivy.func_wrapper import with_unsupported_dtypes, with_supported_dtypes
  from ivy.functional.frontends.torch.func_wrapper import to_ivy_arrays_and_back
label_desc: Use image node_id 5 for calling a global function with example usage: gelu(input) and returns: ivy, ivy