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diff --git a/mesalib/src/glu/sgi/libnurbs/internals/monotonizer.h b/mesalib/src/glu/sgi/libnurbs/internals/monotonizer.h
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+++ b/mesalib/src/glu/sgi/libnurbs/internals/monotonizer.h
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+/*
+ * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
+ * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice including the dates of first publication and
+ * either this permission notice or a reference to
+ * http://oss.sgi.com/projects/FreeB/
+ * shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
+ * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Except as contained in this notice, the name of Silicon Graphics, Inc.
+ * shall not be used in advertising or otherwise to promote the sale, use or
+ * other dealings in this Software without prior written authorization from
+ * Silicon Graphics, Inc.
+ */
+
+/*
+ * monotonizer.h
+ *
+ */
+
+#ifndef __glumonotonizer_h_
+#define __glumonotonizer_h_
+
+#include "mysetjmp.h"
+#include "types.h"
+
+class Arc;
+class ArcTessellator;
+class Pool;
+class Bin;
+class PwlArcPool;
+class Mapdesc;
+
+class Monotonizer {
+    ArcTessellator&	arctessellator;
+    Pool&		arcpool;
+    Pool&		pwlarcpool;
+    jmp_buf&		nurbsJmpBuf;
+
+    enum dir 		{ down, same, up, none };
+    void		tessellate( Arc *, REAL );
+    void		monotonize( Arc *, Bin & );
+    int			isMonotone( Arc * );
+public:
+    			Monotonizer( ArcTessellator& at, Pool& ap, Pool& p, jmp_buf& j ) 
+				: arctessellator(at), arcpool(ap), pwlarcpool(p), nurbsJmpBuf(j) {}
+    int			decompose( Bin &, REAL );
+};
+#endif /* __glumonotonizer_h_ */