1 files changed, 1 insertions, 0 deletions
diff --git a/util.h b/util.h
index 033700c..f7ce721 100644
--- a/util.h
+++ b/util.h
@@ -2,5 +2,6 @@
 
 #define MAX(A, B)               ((A) > (B) ? (A) : (B))
 #define MIN(A, B)               ((A) < (B) ? (A) : (B))
+#define BETWEEN(X, A, B)        ((A) <= (X) && (X) <= (B))
 
 void die(const char *errstr, ...);