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-rw-r--r--spline/spline.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/spline/spline.cpp b/spline/spline.cpp
index 943c3af4..9d783df6 100644
--- a/spline/spline.cpp
+++ b/spline/spline.cpp
@@ -9,6 +9,7 @@
#include "spline.hpp"
#include <algorithm>
+#include <cstdlib>
#include <cmath>
#include <memory>
#include <cinttypes>