1# -*- encoding: utf-8 -*- 

2# pylint: disable=E0203,E1101,C0111 

3""" 

4@file 

5@brief Runtime operator. 

6""" 

7import numpy 

8from ._op import OpRunUnary 

9 

10 

11class IsNaN(OpRunUnary): 

12 

13 def __init__(self, onnx_node, desc=None, **options): 

14 OpRunUnary.__init__(self, onnx_node, desc=desc, 

15 **options) 

16 

17 def _run(self, data): # pylint: disable=W0221 

18 return (numpy.isnan(data), ) 

19 

20 def _infer_shapes(self, x): # pylint: disable=W0221 

21 return (x.copy(dtype=numpy.bool_), ) 

22 

23 def _infer_types(self, x): # pylint: disable=W0221 

24 return (numpy.bool_, ) 

25 

26 def to_python(self, inputs): 

27 return self._to_python_numpy(inputs, 'isnan')