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1e494cf4 JB |
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 | ||
24 | static inline int popcount(unsigned int x) | |
25 | { | |
26 | return __builtin_popcount(x); | |
27 | } | |
28 | ||
29 | static inline int popcountl(unsigned long x) | |
30 | { | |
31 | return __builtin_popcountl(x); | |
32 | } | |
33 | ||
34 | static inline int popcountll(unsigned long long x) | |
35 | { | |
36 | return __builtin_popcountll(x); | |
37 | } | |
38 | ||
39 | __END_DECLS | |
40 | ||
41 | #endif /* __CUTILS_BITOPS_H */ |