code: def trunc_div(a, b):
      ipt = paddle.divide(a, b)
      sign_ipt = paddle.sign(ipt)
      abs_ipt = paddle.abs(ipt)
      abs_ipt = paddle.floor(abs_ipt)
      out = paddle.multiply(sign_ipt, abs_ipt)
      return out
  
imports: import paddle
  import paddle.nn
  import paddle.nn.functional
  from ppdet.core.workspace import register
  from paddle import ParamAttr
  from paddle.regularizer import L2Decay
  from .fcos_head import ScaleReg
  from ..initializer import bias_init_with_prob, constant_, normal_
  from ..ops import get_act_fn, anchor_generator
  from ..rbox_utils import box2corners
  from ..losses import ProbIoULoss
  import numpy
label_desc: Use image node_id 1 for calling a global function with example usage: trunc_div(a, b) and returns: out