1 files changed, 3 insertions, 3 deletions
diff --git a/src/util.h b/src/util.h
index cc78d48..aadf4fe 100644
--- a/src/util.h
+++ b/src/util.h
@@ -4,9 +4,9 @@
 #ifndef __util__
 #define __util__
 #include "string.h"
-#define greater(a,b) (a>b?a:b)
-#define lesser(a,b) (a>b?b:a)
-#define diff(a,b) (a>b?a-b:b-a)
+#define greater(a,b) ((a)>(b)?(a):(b))
+#define lesser(a,b) ((a)>(b)?(b):(a))
+#define diff(a,b) ((a)>(b)?(a)-(b):(b)-(a))
 #define malloc(X) malloc(X); mmalloc();
 void mmalloc();
 #define free(X) free(X); ffree();