diff --git a/src/include/stdlib.h b/src/include/stdlib.h
index d6e7fafb25..6200f1c590 100644
--- a/src/include/stdlib.h
+++ b/src/include/stdlib.h
@@ -16,6 +16,22 @@ static inline unsigned long div_round_up(unsigned int n, unsigned int d)
 {
 	return (n + d - 1) / d;
 }
+
+/*
+ * Divide positive or negative dividend by positive divisor and round
+ * to closest integer. Result is undefined for negative divisors and
+ * for negative dividends if the divisor variable type is unsigned.
+ */
+#define DIV_ROUND_CLOSEST(x, divisor)(			\
+{							\
+	typeof(x) __x = x;				\
+	typeof(divisor) __d = divisor;			\
+	(((typeof(x))-1) > 0 ||				\
+	 ((typeof(divisor))-1) > 0 || (__x) > 0) ?	\
+		(((__x) + ((__d) / 2)) / (__d)) :	\
+		(((__x) - ((__d) / 2)) / (__d));	\
+}							\
+)
 #endif