mirror of https://gitee.com/openkylin/linux.git
39 lines
792 B
C
39 lines
792 B
C
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/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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*/
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#ifndef _ASM_ARCH_HWEIGHT_H
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#define _ASM_ARCH_HWEIGHT_H
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#ifdef ARCH_HAS_USABLE_BUILTIN_POPCOUNT
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#include <asm/types.h>
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static inline unsigned int __arch_hweight32(unsigned int w)
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{
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return __builtin_popcount(w);
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}
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static inline unsigned int __arch_hweight16(unsigned int w)
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{
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return __builtin_popcount(w & 0xffff);
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}
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static inline unsigned int __arch_hweight8(unsigned int w)
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{
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return __builtin_popcount(w & 0xff);
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}
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static inline unsigned long __arch_hweight64(__u64 w)
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{
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return __builtin_popcountll(w);
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}
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#else
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#include <asm-generic/bitops/arch_hweight.h>
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#endif
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#endif /* _ASM_ARCH_HWEIGHT_H */
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