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-rw-r--r--src/stdlib/_rand.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/stdlib/_rand.h b/src/stdlib/_rand.h
new file mode 100644
index 00000000..7f7102ef
--- /dev/null
+++ b/src/stdlib/_rand.h
@@ -0,0 +1,4 @@
+#include <limits.h>
+
+#define _rand(_n) \
+ (((_n) = (_n) * 1103515245 + 12345) ? (_n) / UINT_MAX % RAND_MAX : 0)