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36 lines
1.0 KiB
Plaintext
36 lines
1.0 KiB
Plaintext
// Copyright 2013 Google Inc. All Rights Reserved.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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// Helper for rounding
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#ifndef WOFF2_ROUND_H_
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#define WOFF2_ROUND_H_
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#include <limits>
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namespace woff2 {
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// Round a value up to the nearest multiple of 4. Don't round the value in the
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// case that rounding up overflows.
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template<typename T> T Round4(T value) {
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if (std::numeric_limits<T>::max() - value < 3) {
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return value;
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}
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return (value + 3) & ~3;
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}
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} // namespace woff2
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#endif // WOFF2_ROUND_H_
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