1/*
2 * Copyright (C) 2011 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 __CUTILS_BITOPS_H
18#define __CUTILS_BITOPS_H
19
20#include <sys/cdefs.h>
21
22__BEGIN_DECLS
23
24static inline int popcount(unsigned int x)
25{
26    return __builtin_popcount(x);
27}
28
29static inline int popcountl(unsigned long x)
30{
31    return __builtin_popcountl(x);
32}
33
34static inline int popcountll(unsigned long long x)
35{
36    return __builtin_popcountll(x);
37}
38
39__END_DECLS
40
41#endif /* __CUTILS_BITOPS_H */
42