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diff --git a/thirdparty/linux/include/coin/IpIdentityMatrix.hpp b/thirdparty/linux/include/coin/IpIdentityMatrix.hpp
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+// Copyright (C) 2004, 2008 International Business Machines and others.
+// All Rights Reserved.
+// This code is published under the Eclipse Public License.
+//
+// $Id: IpIdentityMatrix.hpp 2269 2013-05-05 11:32:40Z stefan $
+//
+// Authors:  Carl Laird, Andreas Waechter     IBM    2004-08-13
+
+#ifndef __IPIDENTITYMATRIX_HPP__
+#define __IPIDENTITYMATRIX_HPP__
+
+#include "IpUtils.hpp"
+#include "IpSymMatrix.hpp"
+
+namespace Ipopt
+{
+
+  /** Class for Matrices which are multiples of the identity matrix.
+   *
+   */
+  class IdentityMatrix : public SymMatrix
+  {
+  public:
+
+    /**@name Constructors / Destructors */
+    //@{
+
+    /** Constructor, initializing with dimensions of the matrix
+     *  (true identity matrix).
+     */
+    IdentityMatrix(const SymMatrixSpace* owner_space);
+
+    /** Destructor */
+    ~IdentityMatrix();
+    //@}
+
+    /** Method for setting the factor for the identity matrix. */
+    void SetFactor(Number factor)
+    {
+      factor_ = factor;
+    }
+
+    /** Method for getting the factor for the identity matrix. */
+    Number GetFactor() const
+    {
+      return factor_;
+    }
+
+    /** Method for obtaining the dimention of the matrix. */
+    Index Dim() const;
+
+  protected:
+    /**@name Methods overloaded from matrix */
+    //@{
+    virtual void MultVectorImpl(Number alpha, const Vector& x,
+                                Number beta, Vector& y) const;
+
+    virtual void AddMSinvZImpl(Number alpha, const Vector& S,
+                               const Vector& Z, Vector& X) const;
+
+    /** Method for determining if all stored numbers are valid (i.e.,
+     *  no Inf or Nan). */
+    virtual bool HasValidNumbersImpl() const;
+
+    virtual void ComputeRowAMaxImpl(Vector& rows_norms, bool init) const;
+
+    virtual void PrintImpl(const Journalist& jnlst,
+                           EJournalLevel level,
+                           EJournalCategory category,
+                           const std::string& name,
+                           Index indent,
+                           const std::string& prefix) const;
+    //@}
+
+  private:
+    /**@name Default Compiler Generated Methods
+     * (Hidden to avoid implicit creation/calling).
+     * These methods are not implemented and 
+     * we do not want the compiler to implement
+     * them for us, so we declare them private
+     * and do not define them. This ensures that
+     * they will not be implicitly created/called. */
+    //@{
+    /** Default Constructor */
+    IdentityMatrix();
+
+    /** Copy Constructor */
+    IdentityMatrix(const IdentityMatrix&);
+
+    /** Overloaded Equals Operator */
+    void operator=(const IdentityMatrix&);
+    //@}
+
+    /** Scaling factor for this identity matrix */
+    Number factor_;
+  };
+
+  /** This is the matrix space for IdentityMatrix. */
+  class IdentityMatrixSpace : public SymMatrixSpace
+  {
+  public:
+    /** @name Constructors / Destructors */
+    //@{
+    /** Constructor, given the dimension of the matrix. */
+    IdentityMatrixSpace(Index dim)
+        :
+        SymMatrixSpace(dim)
+    {}
+
+    /** Destructor */
+    virtual ~IdentityMatrixSpace()
+    {}
+    //@}
+
+    /** Overloaded MakeNew method for the SymMatrixSpace base class.
+     */
+    virtual SymMatrix* MakeNewSymMatrix() const
+    {
+      return MakeNewIdentityMatrix();
+    }
+
+    /** Method for creating a new matrix of this specific type. */
+    IdentityMatrix* MakeNewIdentityMatrix() const
+    {
+      return new IdentityMatrix(this);
+    }
+
+  private:
+    /**@name Default Compiler Generated Methods
+     * (Hidden to avoid implicit creation/calling).
+     * These methods are not implemented and 
+     * we do not want the compiler to implement
+     * them for us, so we declare them private
+     * and do not define them. This ensures that
+     * they will not be implicitly created/called. */
+    //@{
+    /** Default Constructor */
+    IdentityMatrixSpace();
+
+    /** Copy Constructor */
+    IdentityMatrixSpace(const IdentityMatrixSpace&);
+
+    /** Overloaded Equals Operator */
+    void operator=(const IdentityMatrixSpace&);
+    //@}
+  };
+
+} // namespace Ipopt
+#endif