xfs-linux/xfs_bit.h - diff

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-version 1.20, 2007/06/20 06:07:40
+version 1.21, 2007/11/02 03:08:06
  Line 47  static inline __uint64_t xfs_mask64lo(in
  }
  /* Get high bit set out of 32-bit argument, -1 if none set */
- extern int xfs_highbit32(__uint32_t v);
+ static inline int xfs_highbit32(__uint32_t v)
+ {
- /* Get low bit set out of 64-bit argument, -1 if none set */
+         return fls(v) - 1;
- extern int xfs_lowbit64(__uint64_t v);
+ }
  /* Get high bit set out of 64-bit argument, -1 if none set */
- extern int xfs_highbit64(__uint64_t);
+ static inline int xfs_highbit64(__uint64_t v)
+ {
+         return fls64(v) - 1;
+ }
+ /* Get low bit set out of 32-bit argument, -1 if none set */
+ static inline int xfs_lowbit32(__uint32_t v)
+ {
+         unsigned long   t = v;
+         return (v) ? find_first_bit(&t, 32) : -1;
+ }
+ /* Get low bit set out of 64-bit argument, -1 if none set */
+ static inline int xfs_lowbit64(__uint64_t v)
+ {
+         unsigned long   t = v;
+         return (v) ? find_first_bit(&t, 64) : -1;
+ }
  /* Return whether bitmap is empty (1 == empty) */
  extern int xfs_bitmap_empty(uint *map, uint size);