1 files changed, 39 insertions, 0 deletions
diff --git a/lib/dns/include/dns/bit.h b/lib/dns/include/dns/bit.h
new file mode 100644
index 0000000..28c733d
--- /dev/null
+++ b/lib/dns/include/dns/bit.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2004-2007  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 2000, 2001  Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id: bit.h,v 1.14 2007/06/19 23:47:16 tbox Exp $ */
+
+#ifndef DNS_BIT_H
+#define DNS_BIT_H 1
+
+/*! \file dns/bit.h */
+
+#include <isc/int.h>
+#include <isc/boolean.h>
+
+typedef isc_uint64_t dns_bitset_t;
+
+#define DNS_BIT_SET(bit, bitset) \
+     (*(bitset) |= ((dns_bitset_t)1 << (bit)))
+#define DNS_BIT_CLEAR(bit, bitset) \
+     (*(bitset) &= ~((dns_bitset_t)1 << (bit)))
+#define DNS_BIT_CHECK(bit, bitset) \
+     ISC_TF((*(bitset) & ((dns_bitset_t)1 << (bit))) \
+	    == ((dns_bitset_t)1 << (bit)))
+
+#endif /* DNS_BIT_H */
+