1 files changed, 38 insertions, 0 deletions
diff --git a/apps/snmpnetstat/ffs.c b/apps/snmpnetstat/ffs.c
new file mode 100644
index 0000000..5997339
--- /dev/null
+++ b/apps/snmpnetstat/ffs.c
@@ -0,0 +1,38 @@
+/*	$OpenBSD: ffs.c,v 1.7 2005/08/08 08:05:37 espie Exp $	*/
+
+/*
+ * Public domain.
+ * Written by Dale Rahn.
+ */
+
+/*
+ * ffs -- vax ffs instruction
+ */
+int
+_ffs(int mask)
+{
+	int bit;
+	unsigned int r = mask;
+	static const signed char t[16] = {
+		-28, 1, 2, 1,
+		  3, 1, 2, 1,
+		  4, 1, 2, 1,
+		  3, 1, 2, 1
+	};
+
+	bit = 0;
+	if (!(r & 0xffff)) {
+		bit += 16;
+		r >>= 16;
+	}
+	if (!(r & 0xff)) {
+		bit += 8;
+		r >>= 8;
+	}
+	if (!(r & 0xf)) {
+		bit += 4;
+		r >>= 4;
+	}
+
+	return (bit + t[ r & 0xf ]);
+}