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_CROSS_OP_H_ |
17 | #define TENSORFLOW_CORE_KERNELS_CROSS_OP_H_ |
18 | |
19 | #include "third_party/eigen3/unsupported/Eigen/CXX11/Tensor" |
20 | #include "tensorflow/core/framework/tensor_shape.h" |
21 | #include "tensorflow/core/framework/tensor_types.h" |
22 | |
23 | namespace tensorflow { |
24 | |
25 | namespace functor { |
26 | |
27 | template <typename Device, typename Type> |
28 | struct Cross { |
29 | void operator()(const Device &d, |
30 | typename TTypes<Type, 2>::ConstTensor in0_data, |
31 | typename TTypes<Type, 2>::ConstTensor in1_data, |
32 | typename TTypes<Type, 2>::Tensor output_data) { |
33 | auto s1 = output_data.template chip<1>(0); |
34 | auto s2 = output_data.template chip<1>(1); |
35 | auto s3 = output_data.template chip<1>(2); |
36 | |
37 | auto u1 = in0_data.template chip<1>(0); |
38 | auto u2 = in0_data.template chip<1>(1); |
39 | auto u3 = in0_data.template chip<1>(2); |
40 | |
41 | auto v1 = in1_data.template chip<1>(0); |
42 | auto v2 = in1_data.template chip<1>(1); |
43 | auto v3 = in1_data.template chip<1>(2); |
44 | |
45 | s1.device(d) = u2 * v3 - u3 * v2; |
46 | s2.device(d) = u3 * v1 - u1 * v3; |
47 | s3.device(d) = u1 * v2 - u2 * v1; |
48 | } |
49 | }; |
50 | |
51 | } // namespace functor |
52 | } // namespace tensorflow |
53 | |
54 | #endif // TENSORFLOW_CORE_KERNELS_CROSS_OP_H_ |
55 | |