code: def test_op_floor(operand, device_id, precision):
      operand = AA(operand)
      expected = np.floor(operand)
  
      expected_forward = [expected]
      expected_backward = {
          "arg": [np.zeros_like(expected)],
      }
  
      from .. import floor
  
      _test_unary_op(
          precision,
          device_id,
          floor,
          operand,
          expected_forward,
          expected_backward,
      )
  
file_path: CNTK/bindings/python/cntk/ops/tests/non_diff_test.py
imports: from __future__ import division
  import numpy
  import cntk
  import pytest
  from .ops_test_utils import unittest_helper, _test_unary_op, _test_binary_op, AA, precision, PRECISION_TO_TYPE
label_desc: Use image node_id 1 for calling a global function with example usage: test_op_floor(operand, device_id, precision) without return types