2 * Copyright (C) 2011 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #ifndef __CUTILS_BITOPS_H
18 #define __CUTILS_BITOPS_H
20 #include <sys/cdefs.h>
24 static inline int popcount(unsigned int x
)
26 return __builtin_popcount(x
);
29 static inline int popcountl(unsigned long x
)
31 return __builtin_popcountl(x
);
34 static inline int popcountll(unsigned long long x
)
36 return __builtin_popcountll(x
);
41 #endif /* __CUTILS_BITOPS_H */