[dpdk-dev] [PATCH 1/2] eal: add macros to align value to multiple

[Pavan Nikhilesh]

Add macros to align given value to the multiple of the supplied
integer.

Signed-off-by: Pavan Nikhilesh <pbhagavatula at caviumnetworks.com>
---

 Common code needed for OcteonTx event timer device.

 lib/librte_eal/common/include/rte_common.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/lib/librte_eal/common/include/rte_common.h b/lib/librte_eal/common/include/rte_common.h
index c7803e41c..2052b5300 100644
--- a/lib/librte_eal/common/include/rte_common.h
+++ b/lib/librte_eal/common/include/rte_common.h
@@ -190,6 +190,22 @@ static void __attribute__((constructor(prio), used)) func(void)
  */
 #define RTE_ALIGN(val, align) RTE_ALIGN_CEIL(val, align)

+/**
+ * Macro to align a value to the multiple of given value. The resultant
+ * value will be of the same type as the first parameter and will be no lower
+ * than the first parameter.
+ */
+#define RTE_ALIGN_MUL_CEIL(v, mul) \
+	(((v + (typeof(v)) mul - 1) / ((typeof(v)) mul)) * (typeof(v))mul)
+
+/**
+ * Macro to align a value to the multiple of given value. The resultant
+ * value will be of the same type as the first parameter and will be no higher
+ * than the first parameter.
+ */
+#define RTE_ALIGN_MUL_FLOOR(v, mul) \
+	((v / ((typeof(v)) mul)) * (typeof(v))mul)
+
 /**
  * Checks if a pointer is aligned to a given power-of-two value
  *
--
2.16.2