1// Copyright 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef CC_BASE_UTIL_H_
6#define CC_BASE_UTIL_H_
7
8#include <limits>
9
10#include "base/basictypes.h"
11
12namespace cc {
13
14template <typename T> T RoundUp(T n, T mul) {
15  COMPILE_ASSERT(std::numeric_limits<T>::is_integer, type_must_be_integral);
16  return (n > 0) ? ((n + mul - 1) / mul) * mul
17                 : (n / mul) * mul;
18}
19
20template <typename T> T RoundDown(T n, T mul) {
21  COMPILE_ASSERT(std::numeric_limits<T>::is_integer, type_must_be_integral);
22  return (n > 0) ? (n / mul) * mul
23                 : (n == 0) ? 0
24                 : ((n - mul + 1) / mul) * mul;
25}
26
27}  // namespace cc
28
29#endif  // CC_BASE_UTIL_H_
30