1/*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef NETUTILS_MATH_H
18#define NETUTILS_MATH_H
19
20#include <algorithm>
21#include <cstdint>
22
23namespace android {
24namespace netdutils {
25
26template <class T>
27inline constexpr const T mask(const int shift) {
28    return (1 << shift) - 1;
29}
30
31// Align x up to the nearest integer multiple of 2^shift
32template <class T>
33inline constexpr const T align(const T& x, const int shift) {
34    return (x + mask<T>(shift)) & ~mask<T>(shift);
35}
36
37}  // namespace netdutils
38}  // namespace android
39
40#endif /* NETUTILS_MATH_H */
41