1 files changed, 17 insertions, 0 deletions
diff --git a/src/lib9/nrand.c b/src/lib9/nrand.c
new file mode 100644
index 00000000..cf9c17c3
--- /dev/null
+++ b/src/lib9/nrand.c
@@ -0,0 +1,17 @@
+#include <lib9.h>
+
+#define	MASK	0x7fffffffL
+
+int
+nrand(int n)
+{
+	long slop, v;
+
+	if(n < 0)
+		return n;
+	slop = MASK % n;
+	do
+		v = lrand();
+	while(v <= slop);
+	return v % n;
+}