42 lines
1,016 B
C
42 lines
1,016 B
C
|
/*
|
||
|
|
* Copyright (C) 2011 The Android Open Source Project
|
||
|
|
*
|
||
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
* you may not use this file except in compliance with the License.
|
||
|
|
* You may obtain a copy of the License at
|
||
|
|
*
|
||
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
*
|
||
|
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
* See the License for the specific language governing permissions and
|
||
|
|
* limitations under the License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __CUTILS_BITOPS_H
|
||
|
|
#define __CUTILS_BITOPS_H
|
||
|
|
|
||
|
|
#include <sys/cdefs.h>
|
||
|
|
|
||
|
|
__BEGIN_DECLS
|
||
|
|
|
||
|
|
static inline int popcount(unsigned int x)
|
||
|
|
{
|
||
|
|
return __builtin_popcount(x);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int popcountl(unsigned long x)
|
||
|
|
{
|
||
|
|
return __builtin_popcountl(x);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int popcountll(unsigned long long x)
|
||
|
|
{
|
||
|
|
return __builtin_popcountll(x);
|
||
|
|
}
|
||
|
|
|
||
|
|
__END_DECLS
|
||
|
|
|
||
|
|
#endif /* __CUTILS_BITOPS_H */
|