code: def gelu_fast(x):
      """
      From https://pytorch.org/docs/stable/generated/torch.nn.GELU.html
      0.5 * x * (1 + tanh(sqrt(2/pi)) * (x + 0.044715 * x**3))
      0.5 * x * (1.0 + tl.libdevice.tanh(0.7978845608028654 * (x + 0.044715 * x * x * x)))
      """
      return (
          0.5
          * x
          * (
              1.0
              + tl.libdevice.tanh(
                  0.7978845608028654 * x * (1.0 + 0.044715 * x * x)
              )
          )
      )
  
imports: from typing import Tuple
  import torch
  import triton
  import triton.language
  import numpy
label_desc: Use image node_id 4 for calling a global function with example usage: gelu_fast(x) and returns: unknown