1 files changed, 6 insertions, 0 deletions
diff --git a/rng.cpp b/rng.cpp
index aba1c02..a6c61f5 100644
--- a/rng.cpp
+++ b/rng.cpp
@@ -4,6 +4,12 @@
 #include <cassert>
 #include "rng.h"
 
+#ifdef __APPLE__
+#include <cstdlib>
+#else
+#include <bsd/stdlib.h>
+#endif
+
 using namespace std;