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move is_aligned() helper function into bertos/cfg/macros.h
[bertos.git]
/
bertos
/
cfg
/
macros.h
diff --git
a/bertos/cfg/macros.h
b/bertos/cfg/macros.h
index 0a721ac5a060f703d00a594ed9ab7cad25ae926e..17f9c6768d92db83972074b7ed26ba479f1c5451 100644
(file)
--- a/
bertos/cfg/macros.h
+++ b/
bertos/cfg/macros.h
@@
-192,8
+192,7
@@
/**
* Perform an integer division rounding the result to the upper int value.
/**
* Perform an integer division rounding the result to the upper int value.
- * \note \a divisor should preferibly be a costant, otherwise this macro generates
- * 2 division. Also divisor is evaluated twice.
+ * \note \a divisor is evaluated twice.
*/
#define DIV_ROUNDUP(dividend, divisor) (((dividend) + (divisor) - 1) / (divisor))
*/
#define DIV_ROUNDUP(dividend, divisor) (((dividend) + (divisor) - 1) / (divisor))
@@
-363,6
+362,14
@@
*/
typedef uint32_t id_t;
*/
typedef uint32_t id_t;
+/**
+ * Check if a pointer is aligned to a certain power-of-2 size
+ */
+INLINE bool is_aligned(const void *addr, size_t size)
+{
+ return ((size_t)addr & (size - 1)) == 0;
+}
+
/** \} */ //defgroup macros
#endif /* MACROS_H */
/** \} */ //defgroup macros
#endif /* MACROS_H */