// Copyright 2013 Google Inc. 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. // // Helper for rounding #ifndef WOFF2_ROUND_H_ #define WOFF2_ROUND_H_ #include <limits> namespace woff2 { // Round a value up to the nearest multiple of 4. Don't round the value in the // case that rounding up overflows. template<typename T> T Round4(T value) { if (std::numeric_limits<T>::max() - value < 3) { return value; } return (value + 3) & ~3; } } // namespace woff2 #endif // WOFF2_ROUND_H_