code: def mylog(x):
      """customized log intrinsic function"""
      return tvm.tir.call_intrin(x.dtype, "tir.mylog", x)
  
file_path: tvm/gallery/how_to/work_with_schedules/intrin_math.py
imports: from __future__ import absolute_import, print_function
  import numpy
  import tvm
  from tvm import te
  from tvm.ir import register_op_attr, register_intrin_lowering
label_desc: Use image node_id 2 for calling a global function with example usage: mylog(x) and returns: tvm