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Add P2BOUNDARY macro

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This commit is contained in:
Brian Behlendorf 2009-01-06 09:23:13 -08:00
parent 7adbea4141
commit 160c63ab76
1 changed files with 2 additions and 0 deletions
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2
include/sys/sysmacros.h
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@ -165,6 +165,8 @@ extern int ddi_strtoul(const char *str, char **nptr,
(-(type)(x) & ((type)(align) - 1))
#define ISP2(x) (((x) & ((x) - 1)) == 0)
#define IS_P2ALIGNED(v, a) ((((uintptr_t)(v)) & ((uintptr_t)(a) - 1)) == 0)
#define P2BOUNDARY(off, len, align) \
(((off) ^ ((off) + (len) - 1)) > (align) - 1)
/*
* Typed version of the P2* macros. These macros should be used to ensure