code: def _atan2pi(result, arg1, arg2):
      return elementwise.get_float_binary_func_kernel(
          result.context,
          "atan2pi",
          arg1.dtype,
          arg2.dtype,
          result.dtype,
      )
  
imports: import pyopencl.array
  import pyopencl.elementwise
  from pyopencl.array import _get_common_dtype
  import numpy
label_desc: Use image node_id 3 for calling a global function with example usage: _atan2pi(result, arg1, arg2) and returns: elementwise