[PATCH v2 2/4] hash: use static_assert

[Stephen Hemminger <stephen@networkplumber.org>]

Now that static_assert is available, better than pre-processor
use of #if condition.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
 lib/hash/rte_cuckoo_hash.h | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/lib/hash/rte_cuckoo_hash.h b/lib/hash/rte_cuckoo_hash.h
index 16fe999c4c..90fda7d7e0 100644
--- a/lib/hash/rte_cuckoo_hash.h
+++ b/lib/hash/rte_cuckoo_hash.h
@@ -24,9 +24,8 @@
  */
 #define RTE_HASH_BUCKET_ENTRIES		8
 
-#if !RTE_IS_POWER_OF_2(RTE_HASH_BUCKET_ENTRIES)
-#error RTE_HASH_BUCKET_ENTRIES must be a power of 2
-#endif
+static_assert(RTE_IS_POWER_OF_2(RTE_HASH_BUCKET_ENTRIES),
+	      "RTE_HASH_BUCKET_ENTRIES must be a power of 2");
 
 #define NULL_SIGNATURE			0
 
-- 
2.47.2