1 | /* Copyright 2015 The TensorFlow Authors. All Rights Reserved. |
2 | |
3 | Licensed under the Apache License, Version 2.0 (the "License"); |
4 | you may not use this file except in compliance with the License. |
5 | You may obtain a copy of the License at |
6 | |
7 | http://www.apache.org/licenses/LICENSE-2.0 |
8 | |
9 | Unless required by applicable law or agreed to in writing, software |
10 | distributed under the License is distributed on an "AS IS" BASIS, |
11 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
12 | See the License for the specific language governing permissions and |
13 | limitations under the License. |
14 | ==============================================================================*/ |
15 | |
16 | #ifndef TENSORFLOW_CORE_KERNELS_REVERSE_OP_H_ |
17 | #define TENSORFLOW_CORE_KERNELS_REVERSE_OP_H_ |
18 | |
19 | #include "third_party/eigen3/unsupported/Eigen/CXX11/Tensor" |
20 | #include "tensorflow/core/framework/tensor_types.h" |
21 | |
22 | namespace tensorflow { |
23 | namespace functor { |
24 | |
25 | // Functor used by ReverseOp to do the computations. |
26 | template <typename Device, typename T, int Dims> |
27 | struct Reverse { |
28 | void operator()(const Device& d, typename TTypes<T, Dims>::ConstTensor input, |
29 | const Eigen::array<bool, Dims>& reverse_dims, |
30 | typename TTypes<T, Dims>::Tensor output) { |
31 | output.device(d) = input.reverse(reverse_dims); |
32 | } |
33 | }; |
34 | |
35 | template <typename Device, typename T> |
36 | struct Reverse<Device, T, 0> { |
37 | void operator()(const Device& d, typename TTypes<T, 0>::ConstTensor input, |
38 | const Eigen::array<bool, 0>& reverse_dims, |
39 | typename TTypes<T, 0>::Tensor output) { |
40 | // Reversing a scalar is copying it. |
41 | output.device(d) = input; |
42 | } |
43 | }; |
44 | |
45 | } // namespace functor |
46 | } // namespace tensorflow |
47 | |
48 | #endif // TENSORFLOW_CORE_KERNELS_REVERSE_OP_H_ |
49 | |