1 files changed, 29 insertions, 0 deletions
diff --git a/contrib/ipfilter/lib/count6bits.c b/contrib/ipfilter/lib/count6bits.c
new file mode 100644
index 0000000..b8f4320
--- /dev/null
+++ b/contrib/ipfilter/lib/count6bits.c
@@ -0,0 +1,29 @@
+/*	$FreeBSD$	*/
+
+/*
+ * Copyright (C) 2012 by Darren Reed.
+ *
+ * See the IPFILTER.LICENCE file for details on licencing.
+ *
+ * $Id$
+ */
+
+#include "ipf.h"
+
+
+int count6bits(msk)
+	u_32_t *msk;
+{
+	int i = 0, k;
+	u_32_t j;
+
+	for (k = 3; k >= 0; k--)
+		if (msk[k] == 0xffffffff)
+			i += 32;
+		else {
+			for (j = msk[k]; j; j <<= 1)
+				if (j & 0x80000000)
+					i++;
+		}
+	return i;
+}