1 files changed, 6 insertions, 2 deletions
diff --git a/siphash.c b/siphash.c
index 41c6f50..78bdf9f 100644
--- a/siphash.c
+++ b/siphash.c
@@ -20,8 +20,12 @@
 #include <string.h>
 
 /* default: SipHash-2-4 */
-#define cROUNDS 2
-#define dROUNDS 4
+#ifndef cROUNDS
+    #define cROUNDS 2
+#endif
+#ifndef dROUNDS
+    #define dROUNDS 4
+#endif
 
 #define ROTL(x, b) (uint64_t)(((x) << (b)) | ((x) >> (64 - (b))))