From e08428c79bd0681965caeb3cb123721b10c65a45 Mon Sep 17 00:00:00 2001
From: Mikael Arguedas <mikael@osrfoundation.org>
Date: Fri, 17 Nov 2017 11:26:52 -0800
Subject: [PATCH] include cstdlib for std::abs function (#399)

---
 rclcpp/src/rclcpp/duration.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/rclcpp/src/rclcpp/duration.cpp b/rclcpp/src/rclcpp/duration.cpp
index b76dc6b..b233851 100644
--- a/rclcpp/src/rclcpp/duration.cpp
+++ b/rclcpp/src/rclcpp/duration.cpp
@@ -12,8 +12,9 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#include <utility>
+#include <cstdlib>
 #include <limits>
+#include <utility>
 
 #include "rclcpp/clock.hpp"
 #include "rclcpp/time.hpp"