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diff --git a/intern/iksolver/intern/TNT/index.h b/intern/iksolver/intern/TNT/index.h
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+/**
+ * $Id$
+ * ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version. The Blender
+ * Foundation also sells licenses for use in proprietary software under
+ * the Blender License.  See http://www.blender.org/BL/ for information
+ * about this.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s): none yet.
+ *
+ * ***** END GPL/BL DUAL LICENSE BLOCK *****
+ */
+
+/*
+
+*
+* Template Numerical Toolkit (TNT): Linear Algebra Module
+*
+* Mathematical and Computational Sciences Division
+* National Institute of Technology,
+* Gaithersburg, MD USA
+*
+*
+* This software was developed at the National Institute of Standards and
+* Technology (NIST) by employees of the Federal Government in the course
+* of their official duties. Pursuant to title 17 Section 105 of the
+* United States Code, this software is not subject to copyright protection
+* and is in the public domain.  The Template Numerical Toolkit (TNT) is
+* an experimental system.  NIST assumes no responsibility whatsoever for
+* its use by other parties, and makes no guarantees, expressed or implied,
+* about its quality, reliability, or any other characteristic.
+*
+* BETA VERSION INCOMPLETE AND SUBJECT TO CHANGE
+* see http://math.nist.gov/tnt for latest updates.
+*
+*/
+
+
+
+// Vector/Matrix/Array Index Module  
+
+#ifndef INDEX_H
+#define INDEX_H
+
+#include "subscript.h"
+
+namespace TNT
+{
+
+class Index1D
+{
+    Subscript lbound_;
+    Subscript ubound_;
+
+    public:
+
+    Subscript lbound() const { return lbound_; }
+    Subscript ubound() const { return ubound_; }
+
+    Index1D(const Index1D &D) : lbound_(D.lbound_), ubound_(D.ubound_) {}
+    Index1D(Subscript i1, Subscript i2) : lbound_(i1), ubound_(i2) {}
+
+    Index1D & operator=(const Index1D &D)
+    {
+        lbound_ = D.lbound_;
+        ubound_ = D.ubound_;
+        return *this;
+    }
+
+};
+
+inline Index1D operator+(const Index1D &D, Subscript i)
+{
+    return Index1D(i+D.lbound(), i+D.ubound());
+}
+
+inline Index1D operator+(Subscript i, const Index1D &D)
+{
+    return Index1D(i+D.lbound(), i+D.ubound());
+}
+
+
+
+inline Index1D operator-(Index1D &D, Subscript i)
+{
+    return Index1D(D.lbound()-i, D.ubound()-i);
+}
+
+inline Index1D operator-(Subscript i, Index1D &D)
+{
+    return Index1D(i-D.lbound(), i-D.ubound());
+}
+
+} // namespace TNT
+
+#endif
+