| /* Copyright 2015 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_PLATFORM_DENORMAL_H_ |
| #define TENSORFLOW_CORE_PLATFORM_DENORMAL_H_ |
| |
| #include "tensorflow/core/platform/macros.h" |
| |
| namespace tensorflow { |
| namespace port { |
| |
| // Remembers the flush denormal state on construction and restores that same |
| // state on destruction. |
| class ScopedRestoreFlushDenormalState { |
| public: |
| ScopedRestoreFlushDenormalState(); |
| ~ScopedRestoreFlushDenormalState(); |
| |
| private: |
| bool flush_zero_mode_; |
| bool denormals_zero_mode_; |
| TF_DISALLOW_COPY_AND_ASSIGN(ScopedRestoreFlushDenormalState); |
| }; |
| |
| // While this class is active, denormal floating point numbers are flushed |
| // to zero. The destructor restores the original flags. |
| class ScopedFlushDenormal { |
| public: |
| ScopedFlushDenormal(); |
| |
| private: |
| ScopedRestoreFlushDenormalState restore_; |
| TF_DISALLOW_COPY_AND_ASSIGN(ScopedFlushDenormal); |
| }; |
| |
| // While this class is active, denormal floating point numbers are not flushed |
| // to zero. The destructor restores the original flags. |
| class ScopedDontFlushDenormal { |
| public: |
| ScopedDontFlushDenormal(); |
| |
| private: |
| ScopedRestoreFlushDenormalState restore_; |
| TF_DISALLOW_COPY_AND_ASSIGN(ScopedDontFlushDenormal); |
| }; |
| |
| } // namespace port |
| } // namespace tensorflow |
| |
| #endif // TENSORFLOW_CORE_PLATFORM_DENORMAL_H_ |