[LTP] [PATCH V4 1/3] Added LTP_ALIGN, __LTP_ALIGN_MASK macros

[Stanislav K. <sta...@or...>]

Signed-off-by: Stanislav Kholmanskikh <sta...@or...>
---
 include/compiler.h |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/include/compiler.h b/include/compiler.h
index ec714fe..4b41f65 100644
--- a/include/compiler.h
+++ b/include/compiler.h
@@ -15,4 +15,10 @@
 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof(arr[0]))
 #endif
 
+/* Round x to the next multiple of a.
+ * a should be a power of 2.
+ */
+#define LTP_ALIGN(x, a)    __LTP_ALIGN_MASK(x, (typeof(x))(a) - 1)
+#define __LTP_ALIGN_MASK(x, mask)  (((x) + (mask)) & ~(mask))
+
 #endif /* __LTP_COMPILER_H__ */
-- 
1.7.1