1 files changed, 1 insertions, 0 deletions
diff --git a/src/common.h b/src/common.h
index 743dea4..9dc85e9 100644
--- a/src/common.h
+++ b/src/common.h
@@ -18,6 +18,7 @@
 #define max3(a, b, c) (max2(max2(a, b), c))
 #define min2(a, b) ((a) < (b) ? (a) : (b))
 #define min3(a, b, c) (min2(min2(a, b), c))
+#define sq(x) ((x)*(x))
 
 char *va(const char *fmt, ...);
 int64_t get_time(void);