| /* Copyright 2017 The TensorFlow Authors. All Rights Reserved. |
| |
| Licensed under the Apache License, Version 2.0 (the "License"); |
| you may not use this file except in compliance with the License. |
| You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| ==============================================================================*/ |
| |
| #ifndef TENSORFLOW_CORE_KERNELS_DETERMINANT_OP_H_ |
| #define TENSORFLOW_CORE_KERNELS_DETERMINANT_OP_H_ |
| |
| #include "tensorflow/core/framework/tensor_types.h" |
| |
| namespace tensorflow { |
| namespace functor { |
| |
| // Helper functor to compute Determinant from a partially pivoted LU |
| // factorization. |
| template <typename Device, typename Scalar> |
| struct DeterminantFromPivotedLUFunctor { |
| void operator()(const Device& device, |
| typename TTypes<Scalar, 3>::ConstTensor lu_factor, |
| const int* pivots, typename TTypes<Scalar, 1>::Tensor output, |
| int* info); |
| }; |
| |
| // Helper functor to compute sign and log of the absolute value of the |
| // determinant from a partially pivoted LU factorization. |
| template <typename Device, typename Scalar> |
| struct LogDeterminantFromPivotedLUFunctor { |
| void operator()(const Device& device, |
| typename TTypes<Scalar, 3>::ConstTensor lu_factor, |
| const int* pivots, typename TTypes<Scalar, 1>::Tensor sign, |
| typename TTypes<Scalar, 1>::Tensor log_abs_det); |
| }; |
| |
| } // namespace functor |
| } // namespace tensorflow |
| |
| #endif // TENSORFLOW_CORE_KERNELS_DETERMINANT_OP_H_ |