LXR linux/arch/mips/include/asm/arch

   1/*
   2 * This file is subject to the terms and conditions of the GNU General Public
   3 * License.  See the file "COPYING" in the main directory of this archive
   4 * for more details.
   5 *
   6 */
   7#ifndef _ASM_ARCH_HWEIGHT_H
   8#define _ASM_ARCH_HWEIGHT_H
   9
  10#ifdef ARCH_HAS_USABLE_BUILTIN_POPCOUNT
  11
  12#include <asm/types.h>
  13
  14static inline unsigned int __arch_hweight32(unsigned int w)
  15{
  16        return __builtin_popcount(w);
  17}
  18
  19static inline unsigned int __arch_hweight16(unsigned int w)
  20{
  21        return __builtin_popcount(w & 0xffff);
  22}
  23
  24static inline unsigned int __arch_hweight8(unsigned int w)
  25{
  26        return __builtin_popcount(w & 0xff);
  27}
  28
  29static inline unsigned long __arch_hweight64(__u64 w)
  30{
  31        return __builtin_popcountll(w);
  32}
  33
  34#else
  35#include <asm-generic/bitops/arch_hweight.h>
  36#endif
  37
  38#endif /* _ASM_ARCH_HWEIGHT_H */
  39