From 104e8443e036daeab6c3ed4efcd04f83ca20e4cc Mon Sep 17 00:00:00 2001
From: domensta <dominique.monnet@ensta-bretagne.org>
Date: Mon, 16 Feb 2015 11:29:15 +0100
Subject: [PATCH] Create ibex_NodeType.h

NodeType.h associated to regular i-set.
---
 ibex_NodeType.h | 92 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 ibex_NodeType.h

diff --git a/ibex_NodeType.h b/ibex_NodeType.h
new file mode 100644
index 000000000..7456e64f4
--- /dev/null
+++ b/ibex_NodeType.h
@@ -0,0 +1,92 @@
+//============================================================================
+//                                  I B E X
+// File        : ibex_NodeType.h
+// Author      : Gilles Chabert
+// Copyright   : Ecole des Mines de Nantes (France)
+// License     : See the LICENSE file
+// Created     : 18 Aug 2014
+//============================================================================
+
+#ifndef __IBEX_NODE_TYPE_H__
+#define __IBEX_NODE_TYPE_H__
+
+namespace ibex {
+
+/** \ingroup iset */
+/*@{*/
+
+/**
+ * \brief Status of a node in the representation of an i-set.
+ *
+ * __IBEX_IN__       : the node box is inside the set
+ * __IBEX_OUT__      : the node box is outside the set
+ * __IBEX_UNK__      : the node is of unknown status (typically, corresponds to a boundary box)
+ * __IBEX_UNK_IN     : the subtree contains IN and UNK leaves
+ * __IBEX_UNK_OUT    : the subtree contains OUT and UNK leaves
+ * __IBEX_UNK_IN_OUT : the subtree contains IN, OUT and UNK leaves
+ * __IBEX_IN_TMP__   : used by "inter" functions only. Means "inside the original set" (but not necessarily inside the intersection)
+ */
+typedef enum { __IBEX_IN__,
+	           __IBEX_OUT__,
+	           __IBEX_UNK__,
+	           __IBEX_UNK_IN__,
+	           __IBEX_UNK_OUT__,
+	           __IBEX_UNK_IN_OUT__,
+	           __IBEX_IN_TMP__ } NodeType;
+
+/**
+ * \brief Status of a union of two nodes.
+ *
+ * \note Status only useful for "sync" functions. So the IN_TMP status is ignored (and this makes no problem so far).
+ *
+ * Ex: __IBEX_IN__ | __IBEX_UNK__ gives __IBEX_IN_UNK__.
+ *
+ * \see SetBisect constructor.
+ */
+NodeType operator|(NodeType x, NodeType y);
+/**
+ * \brief return value of union of two equal boxes
+ */
+NodeType uni(NodeType x,NodeType y);
+/**
+ * \brief return value of union of two boxes, assuming the on associated to y is include in the one associated to x
+ */
+NodeType uni_in(NodeType x, NodeType y);
+/**
+ * \brief return value of inter of two equal boxes
+ */
+NodeType inte(NodeType x, NodeType y);
+/**
+ * \brief return value of inter of two boxes, assuming the on associated to y is include in the one associated to x
+ */
+NodeType inte_in(NodeType x, NodeType y);
+/**
+ * \brief return value of inter of two boxes, assuming the on associated to y is include in the one associated to x
+ */
+bool possibly_contains_in(NodeType x);
+
+/**
+ * \brief False only if the subtree contains no outer point
+ */
+bool possibly_contains_out(NodeType x);
+
+/**
+ * \brief True only if the subtree contains inner points
+ */
+bool certainly_contains_in(NodeType x);
+
+/**
+ * \brief True only if the subtree contains outer points
+ */
+bool certainly_contains_out(NodeType x);
+
+/**
+ * \brief Convert the status to char
+ */
+char to_string(const NodeType& status);
+
+/*@}*/
+
+} // namespace ibex
+
+#endif // __IBEX_NODE_TYPE_H__