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32 lines
1.0 KiB
32 lines
1.0 KiB
/* Copyright 2015 The TensorFlow Authors. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==============================================================================*/
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#include "simple_philox.h"
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#include <android-base/logging.h>
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namespace tensorflow {
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namespace random {
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uint32 SimplePhilox::Skewed(int max_log) {
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CHECK(0 <= max_log && max_log <= 32);
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const int shift = Rand32() % (max_log + 1);
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const uint32 mask = shift == 32 ? ~static_cast<uint32>(0) : (1 << shift) - 1;
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return Rand32() & mask;
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}
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} // namespace random
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} // namespace tensorflow
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