code: def _cast_to_f32(f64):
      return struct.unpack("f", struct.pack("f", f64))[0]
  
imports: import functools
  import io
  import struct
  import types
  import torch
  from detectron2.modeling import meta_arch
  from detectron2.modeling.box_regression import Box2BoxTransform
  from detectron2.modeling.roi_heads import keypoint_head
  from detectron2.structures import Boxes, ImageList, Instances, RotatedBoxes
  from .c10 import Caffe2Compatible
  from .caffe2_patch import ROIHeadsPatcher, patch_generalized_rcnn
  from .shared import alias, check_set_pb_arg, get_pb_arg_floats, get_pb_arg_valf, get_pb_arg_vali, get_pb_arg_vals, mock_torch_nn_functional_interpolate
label_desc: Use image node_id 2 for calling a global function with example usage: _cast_to_f32(f64) and returns: struct