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-rw-r--r--lib/isc/include/isc/boolean.h22
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diff --git a/lib/isc/include/isc/boolean.h b/lib/isc/include/isc/boolean.h
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+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#pragma once
+
+/*! \file isc/boolean.h */
+
+#define isc_boolean_t bool
+#define isc_boolean_false false
+#define isc_boolean_true true
+
+#define ISC_FALSE false
+#define ISC_TRUE true
+#define ISC_TF(x) (!!(x))