diff options
Diffstat (limited to 'innobase/include/ut0byte.ic')
| -rw-r--r-- | innobase/include/ut0byte.ic | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/innobase/include/ut0byte.ic b/innobase/include/ut0byte.ic index 5a70dcf12a8..e141de3aa3f 100644 --- a/innobase/include/ut0byte.ic +++ b/innobase/include/ut0byte.ic @@ -335,6 +335,27 @@ ut_align_down( return((void*)((((ulint)ptr)) & ~(align_no - 1))); } +/************************************************************* +The following function computes the offset of a pointer from the nearest +aligned address. */ +UNIV_INLINE +ulint +ut_align_offset( +/*============*/ + /* out: distance from + aligned pointer */ + const void* ptr, /* in: pointer */ + ulint align_no) /* in: align by this number */ +{ + ut_ad(align_no > 0); + ut_ad(((align_no - 1) & align_no) == 0); + ut_ad(ptr); + + ut_ad(sizeof(void*) == sizeof(ulint)); + + return(((ulint)ptr) & (align_no - 1)); +} + /********************************************************************* Gets the nth bit of a ulint. */ UNIV_INLINE |