diff options
| -rw-r--r-- | include/rtdef.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/rtdef.h b/include/rtdef.h index e70a9cac98..eb5f047f1b 100644 --- a/include/rtdef.h +++ b/include/rtdef.h @@ -389,6 +389,16 @@ typedef int (*init_fn_t)(void); /** * @ingroup BasicDef * + * @def RT_IS_ALIGN(addr, align) + * Return true(1) or false(0). + * RT_IS_ALIGN(128, 4) is judging whether 128 aligns with 4. + * The result is 1, which means 128 aligns with 4. + */ +#define RT_IS_ALIGN(addr, align) (!(addr & (align - 1))) + +/** + * @ingroup BasicDef + * * @def RT_ALIGN(size, align) * Return the most contiguous size aligned at specified width. RT_ALIGN(13, 4) * would return 16. |