From 25697773b529d80278679978b7416ca9c87e15e9 Mon Sep 17 00:00:00 2001
From: Martin Mares <mj@ucw.cz>
Date: Fri, 15 May 1998 07:56:13 +0000
Subject: The library is now glued together from generic and OS-dependent parts
 by the `mergedirs' script. Few more IP address manipulation functions and
 some fixes.

---
 lib/ip.h | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'lib/ip.h')

diff --git a/lib/ip.h b/lib/ip.h
index c3683992..87cd3aa9 100644
--- a/lib/ip.h
+++ b/lib/ip.h
@@ -35,4 +35,10 @@
 #define SCOPE_SITE 2
 #define SCOPE_UNIVERSE 3
 
+/*
+ *	Is it a valid network prefix?
+ */
+
+#define ip_is_prefix(a,l) (!ipa_nonzero(ipa_and(a, ipa_not(ipa_mkmask(l)))))
+
 #endif
-- 
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