/* * Copyright (c) 2021 The WebRTC project authors. All Rights Reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. An additional intellectual property rights grant can be found * in the file PATENTS. All contributing project authors may * be found in the AUTHORS file in the root of the source tree.
*/ #ifndef NET_DCSCTP_COMMON_MATH_H_ #define NET_DCSCTP_COMMON_MATH_H_
namespace dcsctp {
// Rounds up `val` to the nearest value that is divisible by four. Frequently // used to e.g. pad chunks or parameters to an even 32-bit offset. template <typename IntType>
IntType RoundUpTo4(IntType val) { return (val + 3) & ~3;
}
// Similarly, rounds down `val` to the nearest value that is divisible by four. template <typename IntType>
IntType RoundDownTo4(IntType val) { return val & ~3;
}
// Returns true if `val` is divisible by four. template <typename IntType> bool IsDivisibleBy4(IntType val) { return (val & 3) == 0;
}
} // namespace dcsctp
#endif// NET_DCSCTP_COMMON_MATH_H_
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