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include ：rtdef.h : 完善 RT_ALIGN and RT_ALIGN_DOWN 的注释 #10201

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Merged
supperthomas merged 1 commit into from
Apr 18, 2025
Merged

include ：rtdef.h : 完善 RT_ALIGN and RT_ALIGN_DOWN 的注释 #10201

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2 changes: 2 additions & 0 deletions include/rtdef.h
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Original file line number Diff line number Diff line change
Expand Up @@ -251,6 +251,7 @@ typedef int (*init_fn_t)(void);
* @def RT_ALIGN(size, align)
* Return the most contiguous size aligned at specified width. RT_ALIGN(13, 4)
* would return 16.
* @note align Must be an integer power of 2 or the result will be incorrect
*/
#define RT_ALIGN(size, align) (((size) + (align) - 1) & ~((align) - 1))

Expand All @@ -260,6 +261,7 @@ typedef int (*init_fn_t)(void);
* @def RT_ALIGN_DOWN(size, align)
* Return the down number of aligned at specified width. RT_ALIGN_DOWN(13, 4)
* would return 12.
* @note align Must be an integer power of 2 or the result will be incorrect
*/
#define RT_ALIGN_DOWN(size, align) ((size) & ~((align) - 1))

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