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 #include "tensorflow/core/platform/setround.h" 17 18 #include <cfenv> // NOLINT 19 20 namespace tensorflow { 21 namespace port { 22 ScopedSetRound(const int mode)23ScopedSetRound::ScopedSetRound(const int mode) { 24 original_mode_ = std::fegetround(); 25 if (original_mode_ < 0) { 26 // Failed to get current mode, assume ROUND TO NEAREST. 27 original_mode_ = FE_TONEAREST; 28 } 29 std::fesetround(mode); 30 } 31 ~ScopedSetRound()32ScopedSetRound::~ScopedSetRound() { std::fesetround(original_mode_); } 33 34 } // namespace port 35 } // namespace tensorflow 36