move Core/ to a src/ subdir, in preparation for following changes

35 files changed, 3898 insertions, 0 deletions

diff --git a/Eigen/src/Core/Block.h b/Eigen/src/Core/Block.h
new file mode 100644
index 000000000..eb80fc790
--- /dev/null
+++ b/Eigen/src/Core/Block.h
@@ -0,0 +1,126 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_BLOCK_H
+#define EIGEN_BLOCK_H
+
+/** \class Block
+  *
+  * \brief Expression of a fixed-size block
+  *
+  * \param MatrixType the type of the object in which we are taking a block
+  * \param BlockRows the number of rows of the block we are taking
+  * \param BlockCols the number of columns of the block we are taking
+  *
+  * This class represents an expression of a fixed-size block. It is the return
+  * type of MatrixBase::block() and most of the time this is the only way it
+  * is used.
+  *
+  * However, if you want to directly maniputate fixed-size block expressions,
+  * for instance if you want to write a function returning such an expression, you
+  * will need to use this class.
+  *
+  * Here is an example illustrating this:
+  * \include class_Block.cpp
+  * Output: \verbinclude class_Block.out
+  *
+  * \sa MatrixBase::block(), class DynBlock
+  */
+template<typename MatrixType, int BlockRows, int BlockCols> class Block
+  : public MatrixBase<typename MatrixType::Scalar,
+                      Block<MatrixType, BlockRows, BlockCols> >
+{
+  public:
+    typedef typename MatrixType::Scalar Scalar;
+    typedef typename MatrixType::Ref MatRef;
+    friend class MatrixBase<Scalar, Block<MatrixType, BlockRows, BlockCols> >;
+    
+    Block(const MatRef& matrix, int startRow, int startCol)
+      : m_matrix(matrix), m_startRow(startRow), m_startCol(startCol)
+    {
+      assert(startRow >= 0 && BlockRows >= 1 && startRow + BlockRows <= matrix.rows()
+          && startCol >= 0 && BlockCols >= 1 && startCol + BlockCols <= matrix.cols());
+    }
+    
+    Block(const Block& other)
+      : m_matrix(other.m_matrix),
+        m_startRow(other.m_startRow), m_startCol(other.m_startCol) {}
+    
+    EIGEN_INHERIT_ASSIGNMENT_OPERATORS(Block)
+    
+  private:
+    static const int _RowsAtCompileTime = BlockRows,
+                     _ColsAtCompileTime = BlockCols;
+
+    const Block& _ref() const { return *this; }
+    int _rows() const { return BlockRows; }
+    int _cols() const { return BlockCols; }
+    
+    Scalar& _coeffRef(int row, int col)
+    {
+      return m_matrix.coeffRef(row + m_startRow, col + m_startCol);
+    }
+    
+    Scalar _coeff(int row, int col) const
+    {
+      return m_matrix.coeff(row + m_startRow, col + m_startCol);
+    }
+    
+  protected:
+    MatRef m_matrix;
+    const int m_startRow, m_startCol;
+};
+
+/** \returns a fixed-size expression of a block in *this.
+  *
+  * The template parameters \a blockRows and \a blockCols are the number of
+  * rows and columns in the block
+  *
+  * \param startRow the first row in the block
+  * \param startCol the first column in the block
+  *
+  * Example: \include MatrixBase_block.cpp
+  * Output: \verbinclude MatrixBase_block.out
+  *
+  * \sa class Block, dynBlock()
+  */
+template<typename Scalar, typename Derived>
+template<int BlockRows, int BlockCols>
+Block<Derived, BlockRows, BlockCols> MatrixBase<Scalar, Derived>
+  ::block(int startRow, int startCol)
+{
+  return Block<Derived, BlockRows, BlockCols>(ref(), startRow, startCol);
+}
+
+/** This is the const version of block(). */
+template<typename Scalar, typename Derived>
+template<int BlockRows, int BlockCols>
+const Block<Derived, BlockRows, BlockCols> MatrixBase<Scalar, Derived>
+  ::block(int startRow, int startCol) const
+{
+  return Block<Derived, BlockRows, BlockCols>(ref(), startRow, startCol);
+}
+
+#endif // EIGEN_BLOCK_H
diff --git a/Eigen/src/Core/CMakeLists.txt b/Eigen/src/Core/CMakeLists.txt
new file mode 100644
index 000000000..dc4473416
--- /dev/null
+++ b/Eigen/src/Core/CMakeLists.txt
@@ -0,0 +1,6 @@
+FILE(GLOB Eigen_Core_SRCS "*.h")
+
+INSTALL(FILES 
+  ${Eigen_Core_SRCS}
+  DESTINATION ${INCLUDE_INSTALL_DIR}/Core
+  )
diff --git a/Eigen/src/Core/Cast.h b/Eigen/src/Core/Cast.h
new file mode 100644
index 000000000..36886200b
--- /dev/null
+++ b/Eigen/src/Core/Cast.h
@@ -0,0 +1,96 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_CAST_H
+#define EIGEN_CAST_H
+
+/** \class Cast
+  *
+  * \brief Expression with casted scalar type
+  *
+  * \param NewScalar the new scalar type
+  * \param MatrixType the type of the object in which we are casting the scalar type
+  *
+  * This class represents an expression where we are casting the scalar type to a new
+  * type. It is the return type of MatrixBase::cast() and most of the time this is the
+  * only way it is used.
+  *
+  * However, if you want to write a function returning such an expression, you
+  * will need to use this class.
+  *
+  * Here is an example illustrating this:
+  * \include class_Cast.cpp
+  * Output: \verbinclude class_Cast.out
+  *
+  * \sa MatrixBase::cast()
+  */
+template<typename NewScalar, typename MatrixType> class Cast : NoOperatorEquals,
+  public MatrixBase<NewScalar, Cast<NewScalar, MatrixType> >
+{
+  public:
+    typedef NewScalar Scalar;
+    typedef typename MatrixType::Ref MatRef;
+    friend class MatrixBase<Scalar, Cast<Scalar, MatrixType> >;
+    
+    Cast(const MatRef& matrix) : m_matrix(matrix) {}
+    
+    Cast(const Cast& other)
+      : m_matrix(other.m_matrix) {}
+    
+  private:
+    static const int _RowsAtCompileTime = MatrixType::RowsAtCompileTime,
+                     _ColsAtCompileTime = MatrixType::ColsAtCompileTime;
+    const Cast& _ref() const { return *this; }
+    int _rows() const { return m_matrix.rows(); }
+    int _cols() const { return m_matrix.cols(); }
+    
+    Scalar _coeff(int row, int col) const
+    {
+      return static_cast<Scalar>(m_matrix.coeff(row, col));
+    }
+    
+  protected:
+    MatRef m_matrix;
+};
+
+/** \returns an expression of *this with the \a Scalar type casted to
+  * \a NewScalar.
+  *
+  * \param NewScalar the type we are casting the scalars to
+  *
+  * Example: \include MatrixBase_cast.cpp
+  * Output: \verbinclude MatrixBase_cast.out
+  *
+  * \sa class Cast
+  */
+template<typename Scalar, typename Derived>
+template<typename NewScalar>
+const Cast<NewScalar, Derived>
+MatrixBase<Scalar, Derived>::cast() const
+{
+  return Cast<NewScalar, Derived>(static_cast<const Derived*>(this)->ref());
+}
+
+#endif // EIGEN_CAST_H
diff --git a/Eigen/src/Core/Coeffs.h b/Eigen/src/Core/Coeffs.h
new file mode 100644
index 000000000..6c48a40c5
--- /dev/null
+++ b/Eigen/src/Core/Coeffs.h
@@ -0,0 +1,250 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_COEFFS_H
+#define EIGEN_COEFFS_H
+
+/** Short version: don't use this function, use
+  * \link operator()(int,int) const \endlink instead.
+  *
+  * Long version: this function is similar to
+  * \link operator()(int,int) const \endlink, but without the assertion.
+  * Use this for limiting the performance cost of debugging code when doing
+  * repeated coefficient access. Only use this when it is guaranteed that the
+  * parameters \a row and \a col are in range.
+  *
+  * If EIGEN_INTERNAL_DEBUGGING is defined, an assertion will be made, making this
+  * function equivalent to \link operator()(int,int) const \endlink.
+  *
+  * \sa operator()(int,int) const, coeffRef(int,int), coeff(int) const
+  */
+template<typename Scalar, typename Derived>
+Scalar MatrixBase<Scalar, Derived>
+  ::coeff(int row, int col) const
+{
+  eigen_internal_assert(row >= 0 && row < rows()
+                     && col >= 0 && col < cols());
+  return static_cast<const Derived *>(this)->_coeff(row, col);
+}
+
+/** \returns the coefficient at given the given row and column.
+  *
+  * \sa operator()(int,int), operator[](int) const
+  */
+template<typename Scalar, typename Derived>
+Scalar MatrixBase<Scalar, Derived>
+  ::operator()(int row, int col) const
+{
+  assert(row >= 0 && row < rows()
+      && col >= 0 && col < cols());
+  return static_cast<const Derived *>(this)->_coeff(row, col);
+}
+
+/** Short version: don't use this function, use
+  * \link operator()(int,int) \endlink instead.
+  *
+  * Long version: this function is similar to
+  * \link operator()(int,int) \endlink, but without the assertion.
+  * Use this for limiting the performance cost of debugging code when doing
+  * repeated coefficient access. Only use this when it is guaranteed that the
+  * parameters \a row and \a col are in range.
+  *
+  * If EIGEN_INTERNAL_DEBUGGING is defined, an assertion will be made, making this
+  * function equivalent to \link operator()(int,int) \endlink.
+  *
+  * \sa operator()(int,int), coeff(int, int) const, coeffRef(int)
+  */
+template<typename Scalar, typename Derived>
+Scalar& MatrixBase<Scalar, Derived>
+  ::coeffRef(int row, int col)
+{
+  eigen_internal_assert(row >= 0 && row < rows()
+                     && col >= 0 && col < cols());
+  return static_cast<Derived *>(this)->_coeffRef(row, col);
+}
+
+/** \returns a reference to the coefficient at given the given row and column.
+  *
+  * \sa operator()(int,int) const, operator[](int)
+  */
+template<typename Scalar, typename Derived>
+Scalar& MatrixBase<Scalar, Derived>
+  ::operator()(int row, int col)
+{
+  assert(row >= 0 && row < rows()
+      && col >= 0 && col < cols());
+  return static_cast<Derived *>(this)->_coeffRef(row, col);
+}
+
+/** Short version: don't use this function, use
+  * \link operator[](int) const \endlink instead.
+  *
+  * Long version: this function is similar to
+  * \link operator[](int) const \endlink, but without the assertion.
+  * Use this for limiting the performance cost of debugging code when doing
+  * repeated coefficient access. Only use this when it is guaranteed that the
+  * parameters \a row and \a col are in range.
+  *
+  * If EIGEN_INTERNAL_DEBUGGING is defined, an assertion will be made, making this
+  * function equivalent to \link operator[](int) const \endlink.
+  *
+  * \sa operator[](int) const, coeffRef(int), coeff(int,int) const
+  */
+template<typename Scalar, typename Derived>
+Scalar MatrixBase<Scalar, Derived>
+  ::coeff(int index) const
+{
+  eigen_internal_assert(IsVectorAtCompileTime);
+  if(RowsAtCompileTime == 1)
+  {
+    eigen_internal_assert(index >= 0 && index < cols());
+    return coeff(0, index);
+  }
+  else
+  {
+    eigen_internal_assert(index >= 0 && index < rows());
+    return coeff(index, 0);
+  }
+}
+
+/** \returns the coefficient at given index.
+  *
+  * \only_for_vectors
+  *
+  * \sa operator[](int), operator()(int,int) const, x() const, y() const,
+  * z() const, w() const
+  */
+template<typename Scalar, typename Derived>
+Scalar MatrixBase<Scalar, Derived>
+  ::operator[](int index) const
+{
+  assert(IsVectorAtCompileTime);
+  if(RowsAtCompileTime == 1)
+  {
+    assert(index >= 0 && index < cols());
+    return coeff(0, index);
+  }
+  else
+  {
+    assert(index >= 0 && index < rows());
+    return coeff(index, 0);
+  }
+}
+
+/** Short version: don't use this function, use
+  * \link operator[](int) \endlink instead.
+  *
+  * Long version: this function is similar to
+  * \link operator[](int) \endlink, but without the assertion.
+  * Use this for limiting the performance cost of debugging code when doing
+  * repeated coefficient access. Only use this when it is guaranteed that the
+  * parameters \a row and \a col are in range.
+  *
+  * If EIGEN_INTERNAL_DEBUGGING is defined, an assertion will be made, making this
+  * function equivalent to \link operator[](int) \endlink.
+  *
+  * \sa operator[](int), coeff(int) const, coeffRef(int,int)
+  */
+template<typename Scalar, typename Derived>
+Scalar& MatrixBase<Scalar, Derived>
+  ::coeffRef(int index)
+{
+  eigen_internal_assert(IsVectorAtCompileTime);
+  if(RowsAtCompileTime == 1)
+  {
+    eigen_internal_assert(index >= 0 && index < cols());
+    return coeffRef(0, index);
+  }
+  else
+  {
+    eigen_internal_assert(index >= 0 && index < rows());
+    return coeffRef(index, 0);
+  }
+}
+
+/** \returns a reference to the coefficient at given index.
+  *
+  * \only_for_vectors
+  *
+  * \sa operator[](int) const, operator()(int,int), x(), y(), z(), w()
+  */
+template<typename Scalar, typename Derived>
+Scalar& MatrixBase<Scalar, Derived>
+  ::operator[](int index)
+{
+  assert(IsVectorAtCompileTime);
+  if(RowsAtCompileTime == 1)
+  {
+    assert(index >= 0 && index < cols());
+    return coeffRef(0, index);
+  }
+  else
+  {
+    assert(index >= 0 && index < rows());
+    return coeffRef(index, 0);
+  }
+}
+
+/** equivalent to operator[](0). \only_for_vectors */
+template<typename Scalar, typename Derived>
+Scalar MatrixBase<Scalar, Derived>
+  ::x() const { return (*this)[0]; }
+
+/** equivalent to operator[](1). \only_for_vectors */
+template<typename Scalar, typename Derived>
+Scalar MatrixBase<Scalar, Derived>
+  ::y() const { return (*this)[1]; }
+
+/** equivalent to operator[](2). \only_for_vectors */
+template<typename Scalar, typename Derived>
+Scalar MatrixBase<Scalar, Derived>
+  ::z() const { return (*this)[2]; }
+
+/** equivalent to operator[](3). \only_for_vectors */
+template<typename Scalar, typename Derived>
+Scalar MatrixBase<Scalar, Derived>
+  ::w() const { return (*this)[3]; }
+
+/** equivalent to operator[](0). \only_for_vectors */
+template<typename Scalar, typename Derived>
+Scalar& MatrixBase<Scalar, Derived>
+  ::x() { return (*this)[0]; }
+
+/** equivalent to operator[](1). \only_for_vectors */
+template<typename Scalar, typename Derived>
+Scalar& MatrixBase<Scalar, Derived>
+  ::y() { return (*this)[1]; }
+
+/** equivalent to operator[](2). \only_for_vectors */
+template<typename Scalar, typename Derived>
+Scalar& MatrixBase<Scalar, Derived>
+  ::z() { return (*this)[2]; }
+
+/** equivalent to operator[](3). \only_for_vectors */
+template<typename Scalar, typename Derived>
+Scalar& MatrixBase<Scalar, Derived>
+  ::w() { return (*this)[3]; }
+
+#endif // EIGEN_COEFFS_H
diff --git a/Eigen/src/Core/Column.h b/Eigen/src/Core/Column.h
new file mode 100644
index 000000000..e0da29638
--- /dev/null
+++ b/Eigen/src/Core/Column.h
@@ -0,0 +1,111 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_COLUMN_H
+#define EIGEN_COLUMN_H
+
+/** \class Column
+  *
+  * \brief Expression of a column
+  *
+  * \param MatrixType the type of the object in which we are taking a column
+  *
+  * This class represents an expression of a column. It is the return
+  * type of MatrixBase::col() and most of the time this is the only way it
+  * is used.
+  *
+  * However, if you want to directly maniputate column expressions,
+  * for instance if you want to write a function returning such an expression, you
+  * will need to use this class.
+  *
+  * Here is an example illustrating this:
+  * \include class_Column.cpp
+  * Output: \verbinclude class_Column.out
+  *
+  * \sa MatrixBase::col()
+  */
+template<typename MatrixType> class Column
+  : public MatrixBase<typename MatrixType::Scalar, Column<MatrixType> >
+{
+  public:
+    typedef typename MatrixType::Scalar Scalar;
+    typedef typename MatrixType::Ref MatRef;
+    friend class MatrixBase<Scalar, Column<MatrixType> >;
+    
+    Column(const MatRef& matrix, int col)
+      : m_matrix(matrix), m_col(col)
+    {
+      assert(col >= 0 && col < matrix.cols());
+    }
+    
+    Column(const Column& other)
+      : m_matrix(other.m_matrix), m_col(other.m_col) {}
+    
+    EIGEN_INHERIT_ASSIGNMENT_OPERATORS(Column)
+    
+  private:
+    static const int _RowsAtCompileTime = MatrixType::RowsAtCompileTime,
+                     _ColsAtCompileTime = 1;
+    const Column& _ref() const { return *this; }
+    int _rows() const { return m_matrix.rows(); }
+    int _cols() const { return 1; }
+    
+    Scalar& _coeffRef(int row, int)
+    {
+      return m_matrix.coeffRef(row, m_col);
+    }
+    
+    Scalar _coeff(int row, int) const
+    {
+      return m_matrix.coeff(row, m_col);
+    }
+    
+  protected:
+    MatRef m_matrix;
+    const int m_col;
+};
+
+/** \returns an expression of the \a i-th column of *this. Note that the numbering starts at 0.
+  *
+  * Example: \include MatrixBase_column.cpp
+  * Output: \verbinclude MatrixBase_column.out
+  *
+  * \sa row(), class Column */
+template<typename Scalar, typename Derived>
+Column<Derived>
+MatrixBase<Scalar, Derived>::col(int i)
+{
+  return Column<Derived>(ref(), i);
+}
+
+/** This is the const version of col(). */
+template<typename Scalar, typename Derived>
+const Column<Derived>
+MatrixBase<Scalar, Derived>::col(int i) const
+{
+  return Column<Derived>(ref(), i);
+}
+
+#endif // EIGEN_COLUMN_H
diff --git a/Eigen/src/Core/Conjugate.h b/Eigen/src/Core/Conjugate.h
new file mode 100644
index 000000000..3fbe29402
--- /dev/null
+++ b/Eigen/src/Core/Conjugate.h
@@ -0,0 +1,94 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_CONJUGATE_H
+#define EIGEN_CONJUGATE_H
+
+/** \class Conjugate
+  *
+  * \brief Expression of the complex conjugate of a matrix
+  *
+  * \param MatrixType the type of the object of which we are taking the complex conjugate
+  *
+  * This class represents an expression of the complex conjugate of a matrix.
+  * It is the return type of MatrixBase::conjugate() and is also used by
+  * MatrixBase::adjoint() and most of the time these are the only ways it is used.
+  *
+  * \sa MatrixBase::conjugate(), MatrixBase::adjoint()
+  */
+template<typename MatrixType> class Conjugate : NoOperatorEquals,
+  public MatrixBase<typename MatrixType::Scalar, Conjugate<MatrixType> >
+{
+  public:
+    typedef typename MatrixType::Scalar Scalar;
+    typedef typename MatrixType::Ref MatRef;
+    friend class MatrixBase<Scalar, Conjugate<MatrixType> >;
+    
+    Conjugate(const MatRef& matrix) : m_matrix(matrix) {}
+    
+    Conjugate(const Conjugate& other)
+      : m_matrix(other.m_matrix) {}
+    
+  private:
+    static const int _RowsAtCompileTime = MatrixType::RowsAtCompileTime,
+                     _ColsAtCompileTime = MatrixType::ColsAtCompileTime;
+
+    const Conjugate& _ref() const { return *this; }
+    int _rows() const { return m_matrix.rows(); }
+    int _cols() const { return m_matrix.cols(); }
+    
+    Scalar _coeff(int row, int col) const
+    {
+      return conj(m_matrix.coeff(row, col));
+    }
+    
+  protected:
+    MatRef m_matrix;
+};
+
+/** \returns an expression of the complex conjugate of *this.
+  *
+  * \sa adjoint(), class Conjugate */
+template<typename Scalar, typename Derived>
+const Conjugate<Derived>
+MatrixBase<Scalar, Derived>::conjugate() const
+{
+  return Conjugate<Derived>(static_cast<const Derived*>(this)->ref());
+}
+
+/** \returns an expression of the adjoint (i.e. conjugate transpose) of *this.
+  *
+  * Example: \include MatrixBase_adjoint.cpp
+  * Output: \verbinclude MatrixBase_adjoint.out
+  *
+  * \sa transpose(), conjugate(), class Transpose, class Conjugate */
+template<typename Scalar, typename Derived>
+const Transpose<Conjugate<Derived> >
+MatrixBase<Scalar, Derived>::adjoint() const
+{
+  return conjugate().transpose();
+}
+
+#endif // EIGEN_CONJUGATE_H
diff --git a/Eigen/src/Core/DiagonalCoeffs.h b/Eigen/src/Core/DiagonalCoeffs.h
new file mode 100644
index 000000000..1c5353df0
--- /dev/null
+++ b/Eigen/src/Core/DiagonalCoeffs.h
@@ -0,0 +1,98 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_DIAGONALCOEFFS_H
+#define EIGEN_DIAGONALCOEFFS_H
+
+/** \class DiagonalCoeffs
+  *
+  * \brief Expression of the main diagonal of a square matrix
+  *
+  * \param MatrixType the type of the object in which we are taking the main diagonal
+  *
+  * This class represents an expression of the main diagonal of a square matrix.
+  * It is the return type of MatrixBase::diagonal() and most of the time this is
+  * the only way it is used.
+  *
+  * \sa MatrixBase::diagonal()
+  */
+template<typename MatrixType> class DiagonalCoeffs
+  : public MatrixBase<typename MatrixType::Scalar, DiagonalCoeffs<MatrixType> >
+{
+  public:
+    typedef typename MatrixType::Scalar Scalar;
+    typedef typename MatrixType::Ref MatRef;
+    friend class MatrixBase<Scalar, DiagonalCoeffs<MatrixType> >;
+    
+    DiagonalCoeffs(const MatRef& matrix) : m_matrix(matrix) {}
+    
+    DiagonalCoeffs(const DiagonalCoeffs& other) : m_matrix(other.m_matrix) {}
+    
+    EIGEN_INHERIT_ASSIGNMENT_OPERATORS(DiagonalCoeffs)
+    
+  private:
+    static const int _RowsAtCompileTime = MatrixType::RowsAtCompileTime,
+                     _ColsAtCompileTime = 1;
+    
+    const DiagonalCoeffs& _ref() const { return *this; }
+    int _rows() const { return std::min(m_matrix.rows(), m_matrix.cols()); }
+    int _cols() const { return 1; }
+    
+    Scalar& _coeffRef(int row, int)
+    {
+      return m_matrix.coeffRef(row, row);
+    }
+    
+    Scalar _coeff(int row, int) const
+    {
+      return m_matrix.coeff(row, row);
+    }
+    
+  protected:
+    MatRef m_matrix;
+};
+
+/** \returns an expression of the main diagonal of *this, which must be a square matrix.
+  *
+  * Example: \include MatrixBase_diagonal.cpp
+  * Output: \verbinclude MatrixBase_diagonal.out
+  *
+  * \sa class DiagonalCoeffs */
+template<typename Scalar, typename Derived>
+DiagonalCoeffs<Derived>
+MatrixBase<Scalar, Derived>::diagonal()
+{
+  return DiagonalCoeffs<Derived>(ref());
+}
+
+/** This is the const version of diagonal(). */
+template<typename Scalar, typename Derived>
+const DiagonalCoeffs<Derived>
+MatrixBase<Scalar, Derived>::diagonal() const
+{
+  return DiagonalCoeffs<Derived>(ref());
+}
+
+#endif // EIGEN_DIAGONALCOEFFS_H
diff --git a/Eigen/src/Core/DiagonalMatrix.h b/Eigen/src/Core/DiagonalMatrix.h
new file mode 100644
index 000000000..125fa58d9
--- /dev/null
+++ b/Eigen/src/Core/DiagonalMatrix.h
@@ -0,0 +1,72 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_DIAGONALMATRIX_H
+#define EIGEN_DIAGONALMATRIX_H
+
+template<typename MatrixType, typename CoeffsVectorType>
+class DiagonalMatrix : NoOperatorEquals,
+  public MatrixBase<typename MatrixType::Scalar,
+                    DiagonalMatrix<MatrixType, CoeffsVectorType> >
+{
+  public:
+    typedef typename MatrixType::Scalar Scalar;
+    typedef typename CoeffsVectorType::Ref CoeffsVecRef;
+    friend class MatrixBase<Scalar, DiagonalMatrix<MatrixType, CoeffsVectorType> >;
+    
+    DiagonalMatrix(const CoeffsVecRef& coeffs) : m_coeffs(coeffs)
+    {
+      assert(CoeffsVectorType::IsVectorAtCompileTime
+          && _RowsAtCompileTime == _ColsAtCompileTime
+          && _RowsAtCompileTime == CoeffsVectorType::SizeAtCompileTime
+          && coeffs.size() > 0);
+    }
+    
+  private:
+    static const int _RowsAtCompileTime = MatrixType::RowsAtCompileTime,
+                     _ColsAtCompileTime = MatrixType::ColsAtCompileTime;
+
+    const DiagonalMatrix& _ref() const { return *this; }
+    int _rows() const { return m_coeffs.size(); }
+    int _cols() const { return m_coeffs.size(); }
+    
+    Scalar _coeff(int row, int col) const
+    {
+      return row == col ? m_coeffs.coeff(row) : static_cast<Scalar>(0);
+    }
+    
+  protected:
+    CoeffsVecRef m_coeffs;
+};
+
+template<typename Scalar, typename Derived>
+template<typename OtherDerived>
+const DiagonalMatrix<Derived, OtherDerived>
+MatrixBase<Scalar, Derived>::diagonal(const OtherDerived& coeffs)
+{
+  return DiagonalMatrix<Derived, OtherDerived>(coeffs);
+}
+
+#endif // EIGEN_DIAGONALMATRIX_H
diff --git a/Eigen/src/Core/Difference.h b/Eigen/src/Core/Difference.h
new file mode 100644
index 000000000..815f5b2fb
--- /dev/null
+++ b/Eigen/src/Core/Difference.h
@@ -0,0 +1,81 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_DIFFERENCE_H
+#define EIGEN_DIFFERENCE_H
+
+template<typename Lhs, typename Rhs> class Difference : NoOperatorEquals,
+  public MatrixBase<typename Lhs::Scalar, Difference<Lhs, Rhs> >
+{
+  public:
+    typedef typename Lhs::Scalar Scalar;
+    typedef typename Lhs::Ref LhsRef;
+    typedef typename Rhs::Ref RhsRef;
+    friend class MatrixBase<Scalar, Difference>;
+    
+    Difference(const LhsRef& lhs, const RhsRef& rhs)
+      : m_lhs(lhs), m_rhs(rhs)
+    {
+      assert(lhs.rows() == rhs.rows() && lhs.cols() == rhs.cols());
+    }
+
+    Difference(const Difference& other)
+      : m_lhs(other.m_lhs), m_rhs(other.m_rhs) {}
+
+  private:
+    static const int _RowsAtCompileTime = Lhs::RowsAtCompileTime,
+                     _ColsAtCompileTime = Rhs::ColsAtCompileTime;
+    
+    const Difference& _ref() const { return *this; }
+    int _rows() const { return m_lhs.rows(); }
+    int _cols() const { return m_lhs.cols(); }
+
+    Scalar _coeff(int row, int col) const
+    {
+      return m_lhs.coeff(row, col) - m_rhs.coeff(row, col);
+    }
+    
+  protected:
+    const LhsRef m_lhs;
+    const RhsRef m_rhs;
+};
+
+/** \relates MatrixBase */
+template<typename Scalar, typename Derived1, typename Derived2>
+const Difference<Derived1, Derived2>
+operator-(const MatrixBase<Scalar, Derived1> &mat1, const MatrixBase<Scalar, Derived2> &mat2)
+{
+  return Difference<Derived1, Derived2>(mat1.ref(), mat2.ref());
+}
+
+template<typename Scalar, typename Derived>
+template<typename OtherDerived>
+Derived &
+MatrixBase<Scalar, Derived>::operator-=(const MatrixBase<Scalar, OtherDerived> &other)
+{
+  return *this = *this - other;
+}
+
+#endif // EIGEN_DIFFERENCE_H
diff --git a/Eigen/src/Core/Dot.h b/Eigen/src/Core/Dot.h
new file mode 100644
index 000000000..ae64a634a
--- /dev/null
+++ b/Eigen/src/Core/Dot.h
@@ -0,0 +1,126 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_DOT_H
+#define EIGEN_DOT_H
+
+template<int Index, int Size, typename Derived1, typename Derived2>
+struct DotUnroller
+{
+  static void run(const Derived1 &v1, const Derived2& v2, typename Derived1::Scalar &dot)
+  {
+    DotUnroller<Index-1, Size, Derived1, Derived2>::run(v1, v2, dot);
+    dot += v1.coeff(Index) * conj(v2.coeff(Index));
+  }
+};
+
+template<int Size, typename Derived1, typename Derived2>
+struct DotUnroller<0, Size, Derived1, Derived2>
+{
+  static void run(const Derived1 &v1, const Derived2& v2, typename Derived1::Scalar &dot)
+  {
+    dot = v1.coeff(0) * conj(v2.coeff(0));
+  }
+};
+
+template<int Index, typename Derived1, typename Derived2>
+struct DotUnroller<Index, Dynamic, Derived1, Derived2>
+{
+  static void run(const Derived1&, const Derived2&, typename Derived1::Scalar&) {}
+};
+
+// prevent buggy user code from causing an infinite recursion
+template<int Index, typename Derived1, typename Derived2>
+struct DotUnroller<Index, 0, Derived1, Derived2>
+{
+  static void run(const Derived1&, const Derived2&, typename Derived1::Scalar&) {}
+};
+
+/** \returns the dot product of *this with other.
+  *
+  * \only_for_vectors
+  * 
+  * \note If the scalar type is complex numbers, then this function returns the hermitian
+  * (sesquilinear) dot product, linear in the first variable and anti-linear in the
+  * second variable.
+  *
+  * \sa norm2(), norm()
+  */
+template<typename Scalar, typename Derived>
+template<typename OtherDerived>
+Scalar MatrixBase<Scalar, Derived>::dot(const OtherDerived& other) const
+{
+  assert(IsVectorAtCompileTime && OtherDerived::IsVectorAtCompileTime && size() == other.size());
+  Scalar res;
+  if(EIGEN_UNROLLED_LOOPS && SizeAtCompileTime != Dynamic && SizeAtCompileTime <= 16)
+    DotUnroller<SizeAtCompileTime-1, SizeAtCompileTime, Derived, OtherDerived>
+      ::run(*static_cast<const Derived*>(this), other, res);
+  else
+  {
+    res = (*this).coeff(0) * conj(other.coeff(0));
+    for(int i = 1; i < size(); i++)
+      res += (*this).coeff(i)* conj(other.coeff(i));
+  }
+  return res;
+}
+
+/** \returns the squared norm of *this, i.e. the dot product of *this with itself.
+  *
+  * \only_for_vectors
+  *
+  * \sa dot(), norm()
+  */
+template<typename Scalar, typename Derived>
+typename NumTraits<Scalar>::Real MatrixBase<Scalar, Derived>::norm2() const
+{
+  return real(dot(*this));
+}
+
+/** \returns the norm of *this, i.e. the square root of the dot product of *this with itself.
+  *
+  * \only_for_vectors
+  *
+  * \sa dot(), norm2()
+  */
+template<typename Scalar, typename Derived>
+typename NumTraits<Scalar>::Real MatrixBase<Scalar, Derived>::norm() const
+{
+  return sqrt(norm2());
+}
+
+/** \returns an expression of the quotient of *this by its own norm.
+  *
+  * \only_for_vectors
+  *
+  * \sa norm()
+  */
+template<typename Scalar, typename Derived>
+const ScalarMultiple<typename NumTraits<Scalar>::Real, Derived>
+MatrixBase<Scalar, Derived>::normalized() const
+{
+  return (*this) / norm();
+}
+
+#endif // EIGEN_DOT_H
diff --git a/Eigen/src/Core/DynBlock.h b/Eigen/src/Core/DynBlock.h
new file mode 100644
index 000000000..c06a33b07
--- /dev/null
+++ b/Eigen/src/Core/DynBlock.h
@@ -0,0 +1,126 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_DYNBLOCK_H
+#define EIGEN_DYNBLOCK_H
+
+/** \class DynBlock
+  *
+  * \brief Expression of a dynamic-size block
+  *
+  * \param MatrixType the type of the object in which we are taking a block
+  *
+  * This class represents an expression of a dynamic-size block. It is the return
+  * type of MatrixBase::dynBlock() and most of the time this is the only way it
+  * is used.
+  *
+  * However, if you want to directly maniputate dynamic-size block expressions,
+  * for instance if you want to write a function returning such an expression, you
+  * will need to use this class.
+  *
+  * Here is an example illustrating this:
+  * \include class_DynBlock.cpp
+  * Output: \verbinclude class_DynBlock.out
+  *
+  * \sa MatrixBase::dynBlock()
+  */
+template<typename MatrixType> class DynBlock
+  : public MatrixBase<typename MatrixType::Scalar, DynBlock<MatrixType> >
+{
+  public:
+    typedef typename MatrixType::Scalar Scalar;
+    typedef typename MatrixType::Ref MatRef;
+    friend class MatrixBase<Scalar, DynBlock<MatrixType> >;
+    
+    DynBlock(const MatRef& matrix,
+          int startRow, int startCol,
+          int blockRows, int blockCols)
+      : m_matrix(matrix), m_startRow(startRow), m_startCol(startCol),
+                          m_blockRows(blockRows), m_blockCols(blockCols)
+    {
+      assert(startRow >= 0 && blockRows >= 1 && startRow + blockRows <= matrix.rows()
+          && startCol >= 0 && blockCols >= 1 && startCol + blockCols <= matrix.cols());
+    }
+    
+    DynBlock(const DynBlock& other)
+      : m_matrix(other.m_matrix),
+        m_startRow(other.m_startRow), m_startCol(other.m_startCol),
+        m_blockRows(other.m_blockRows), m_blockCols(other.m_blockCols) {}
+    
+    EIGEN_INHERIT_ASSIGNMENT_OPERATORS(DynBlock)
+    
+  private:
+    static const int
+      _RowsAtCompileTime = MatrixType::RowsAtCompileTime == 1 ? 1 : Dynamic,
+      _ColsAtCompileTime = MatrixType::ColsAtCompileTime == 1 ? 1 : Dynamic;
+
+    const DynBlock& _ref() const { return *this; }
+    int _rows() const { return m_blockRows; }
+    int _cols() const { return m_blockCols; }
+    
+    Scalar& _coeffRef(int row, int col)
+    {
+      return m_matrix.coeffRef(row + m_startRow, col + m_startCol);
+    }
+    
+    Scalar _coeff(int row, int col) const
+    {
+      return m_matrix.coeff(row + m_startRow, col + m_startCol);
+    }
+    
+  protected:
+    MatRef m_matrix;
+    const int m_startRow, m_startCol, m_blockRows, m_blockCols;
+};
+
+/** \returns a dynamic-size expression of a block in *this.
+  *
+  * \param startRow the first row in the block
+  * \param startCol the first column in the block
+  * \param blockRows the number of rows in the block
+  * \param blockCols the number of columns in the block
+  *
+  * Example: \include MatrixBase_dynBlock.cpp
+  * Output: \verbinclude MatrixBase_dynBlock.out
+  *
+  * \sa class DynBlock, block()
+  */
+template<typename Scalar, typename Derived>
+DynBlock<Derived> MatrixBase<Scalar, Derived>
+  ::dynBlock(int startRow, int startCol, int blockRows, int blockCols)
+{
+  return DynBlock<Derived>(ref(), startRow, startCol, blockRows, blockCols);
+}
+
+/** This is the const version of dynBlock(). */
+template<typename Scalar, typename Derived>
+const DynBlock<Derived> MatrixBase<Scalar, Derived>
+  ::dynBlock(int startRow, int startCol, int blockRows, int blockCols) const
+{
+  return DynBlock<Derived>(ref(), startRow, startCol, blockRows, blockCols);
+}
+
+
+#endif // EIGEN_DYNBLOCK_H
diff --git a/Eigen/src/Core/Eval.h b/Eigen/src/Core/Eval.h
new file mode 100644
index 000000000..a4bf582f1
--- /dev/null
+++ b/Eigen/src/Core/Eval.h
@@ -0,0 +1,81 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_EVAL_H
+#define EIGEN_EVAL_H
+
+/** \class Eval
+  *
+  * \brief Evaluation of an expression
+  *
+  * The template parameter Expression is the type of the expression that we are evaluating.
+  *
+  * This class is the return
+  * type of MatrixBase::eval() and most of the time this is the only way it
+  * is used.
+  *
+  * However, if you want to write a function returning an evaluation of an expression, you
+  * will need to use this class.
+  *
+  * Here is an example illustrating this:
+  * \include class_Eval.cpp
+  * Output: \verbinclude class_Eval.out
+  *
+  * \sa MatrixBase::eval()
+  */
+template<typename Expression> class Eval : NoOperatorEquals,
+  public Matrix< typename Expression::Scalar,
+                 Expression::RowsAtCompileTime,
+                 Expression::ColsAtCompileTime >
+{
+  public:
+    typedef typename Expression::Scalar Scalar;
+    typedef Matrix<Scalar, Expression::RowsAtCompileTime, Expression::ColsAtCompileTime> MatrixType;
+    typedef Expression Base;
+    friend class MatrixBase<Scalar, Expression>;
+    
+    Eval(const Expression& expression) : MatrixType(expression) {}
+};
+
+/** Evaluates *this, which can be any expression, and returns the obtained matrix.
+  *
+  * A common use case for this is the following. In an expression-templates library
+  * like Eigen, the coefficients of an expression are only computed as they are
+  * accessed, they are not computed when the expression itself is constructed. This is
+  * usually a good thing, as this "lazy evaluation" improves performance, but can also
+  * in certain cases lead to wrong results and/or to redundant computations. In such
+  * cases, one can restore the classical immediate-evaluation behavior by calling eval().
+  *
+  * Example: \include MatrixBase_eval.cpp
+  * Output: \verbinclude MatrixBase_eval.out
+  *
+  * \sa class Eval */
+template<typename Scalar, typename Derived>
+const Eval<Derived> MatrixBase<Scalar, Derived>::eval() const
+{
+  return Eval<Derived>(*static_cast<const Derived*>(this));
+}
+
+#endif // EIGEN_EVAL_H
diff --git a/Eigen/src/Core/Fuzzy.h b/Eigen/src/Core/Fuzzy.h
new file mode 100644
index 000000000..bd3219568
--- /dev/null
+++ b/Eigen/src/Core/Fuzzy.h
@@ -0,0 +1,91 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_FUZZY_H
+#define EIGEN_FUZZY_H
+
+template<typename Scalar, typename Derived>
+template<typename OtherDerived>
+bool MatrixBase<Scalar, Derived>::isApprox(
+  const OtherDerived& other,
+  const typename NumTraits<Scalar>::Real& prec
+) const
+{
+  assert(rows() == other.rows() && cols() == other.cols());
+  if(IsVectorAtCompileTime)
+  {
+    return((*this - other).norm2() <= std::min(norm2(), other.norm2()) * prec * prec);
+  }
+  else
+  {
+    for(int i = 0; i < cols(); i++)
+      if((col(i) - other.col(i)).norm2()
+         > std::min(col(i).norm2(), other.col(i).norm2()) * prec * prec)
+        return false;
+    return true;
+  }
+}
+
+template<typename Scalar, typename Derived>
+bool MatrixBase<Scalar, Derived>::isMuchSmallerThan(
+  const typename NumTraits<Scalar>::Real& other,
+  const typename NumTraits<Scalar>::Real& prec
+) const
+{
+  if(IsVectorAtCompileTime)
+  {
+    return(norm2() <= abs2(other * prec));
+  }
+  else
+  {
+    for(int i = 0; i < cols(); i++)
+      if(col(i).norm2() > abs2(other * prec))
+        return false;
+    return true;
+  }
+}
+
+template<typename Scalar, typename Derived>
+template<typename OtherDerived>
+bool MatrixBase<Scalar, Derived>::isMuchSmallerThan(
+  const MatrixBase<Scalar, OtherDerived>& other,
+  const typename NumTraits<Scalar>::Real& prec
+) const
+{
+  assert(rows() == other.rows() && cols() == other.cols());
+  if(IsVectorAtCompileTime)
+  {
+    return(norm2() <= other.norm2() * prec * prec);
+  }
+  else
+  {
+    for(int i = 0; i < cols(); i++)
+      if(col(i).norm2() > other.col(i).norm2() * prec * prec)
+        return false;
+    return true;
+  }
+}
+
+#endif // EIGEN_FUZZY_H
diff --git a/Eigen/src/Core/IO.h b/Eigen/src/Core/IO.h
new file mode 100644
index 000000000..0aa8f22f7
--- /dev/null
+++ b/Eigen/src/Core/IO.h
@@ -0,0 +1,45 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_IO_H
+#define EIGEN_IO_H
+
+template<typename Scalar, typename Derived>
+std::ostream & operator <<
+( std::ostream & s,
+  const MatrixBase<Scalar, Derived> & m )
+{
+  for( int i = 0; i < m.rows(); i++ )
+  {
+    s << m( i, 0 );
+    for (int j = 1; j < m.cols(); j++ )
+      s << " " << m( i, j );
+    if( i < m.rows() - 1)
+      s << std::endl;
+  }
+  return s;
+}
+
+#endif // EIGEN_IO_H
diff --git a/Eigen/src/Core/Identity.h b/Eigen/src/Core/Identity.h
new file mode 100644
index 000000000..a24a30224
--- /dev/null
+++ b/Eigen/src/Core/Identity.h
@@ -0,0 +1,64 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_IDENTITY_H
+#define EIGEN_IDENTITY_H
+
+template<typename MatrixType> class Identity : NoOperatorEquals,
+  public MatrixBase<typename MatrixType::Scalar, Identity<MatrixType> >
+{
+  public:
+    typedef typename MatrixType::Scalar Scalar;
+    friend class MatrixBase<Scalar, Identity<MatrixType> >;
+    
+    Identity(int rows) : m_rows(rows)
+    {
+      assert(rows > 0 && _RowsAtCompileTime == _ColsAtCompileTime);
+    }
+    
+  private:
+    static const int _RowsAtCompileTime = MatrixType::RowsAtCompileTime,
+                     _ColsAtCompileTime = MatrixType::ColsAtCompileTime;
+
+    const Identity& _ref() const { return *this; }
+    int _rows() const { return m_rows; }
+    int _cols() const { return m_rows; }
+    
+    Scalar _coeff(int row, int col) const
+    {
+      return row == col ? static_cast<Scalar>(1) : static_cast<Scalar>(0);
+    }
+    
+  protected:
+    int m_rows;
+};
+
+template<typename Scalar, typename Derived>
+const Identity<Derived> MatrixBase<Scalar, Derived>::identity(int rows)
+{
+  return Identity<Derived>(rows);
+}
+
+#endif // EIGEN_IDENTITY_H
diff --git a/Eigen/src/Core/Map.h b/Eigen/src/Core/Map.h
new file mode 100644
index 000000000..2fcda3e3d
--- /dev/null
+++ b/Eigen/src/Core/Map.h
@@ -0,0 +1,148 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_MAP_H
+#define EIGEN_MAP_H
+
+template<typename MatrixType> class Map
+  : public MatrixBase<typename MatrixType::Scalar, Map<MatrixType> >
+{
+  public:
+    typedef typename MatrixType::Scalar Scalar;
+    friend class MatrixBase<Scalar, Map<MatrixType> >;
+    
+    Map(const Scalar* data, int rows, int cols) : m_data(data), m_rows(rows), m_cols(cols)
+    {
+      assert(rows > 0 && cols > 0);
+    }
+    
+    EIGEN_INHERIT_ASSIGNMENT_OPERATORS(Map)
+    
+  private:
+    static const int _RowsAtCompileTime = MatrixType::RowsAtCompileTime,
+                     _ColsAtCompileTime = MatrixType::ColsAtCompileTime;
+
+    static const MatrixStorageOrder _StorageOrder = MatrixType::StorageOrder;
+
+    const Map& _ref() const { return *this; }
+    int _rows() const { return m_rows; }
+    int _cols() const { return m_cols; }
+    
+    const Scalar& _coeff(int row, int col) const
+    {
+      if(_StorageOrder == ColumnDominant)
+        return m_data[row + col * m_rows];
+      else // RowDominant
+        return m_data[col + row * m_cols];
+    }
+    
+    Scalar& _coeffRef(int row, int col)
+    {
+      if(_StorageOrder == ColumnDominant)
+        return const_cast<Scalar*>(m_data)[row + col * m_rows];
+      else // RowDominant
+        return const_cast<Scalar*>(m_data)[col + row * m_cols];
+    }
+    
+  protected:
+    const Scalar* m_data;
+    int m_rows, m_cols;
+};
+
+template<typename _Scalar, int _Rows, int _Cols, MatrixStorageOrder _StorageOrder>
+const Map<Matrix<_Scalar, _Rows, _Cols, _StorageOrder> >
+Matrix<_Scalar, _Rows, _Cols, _StorageOrder>::map(const Scalar* data, int rows, int cols)
+{
+  return Map<Matrix>(data, rows, cols);
+}
+
+template<typename _Scalar, int _Rows, int _Cols, MatrixStorageOrder _StorageOrder>
+const Map<Matrix<_Scalar, _Rows, _Cols, _StorageOrder> >
+Matrix<_Scalar, _Rows, _Cols, _StorageOrder>::map(const Scalar* data, int size)
+{
+  assert(_Cols == 1 || _Rows ==1);
+  if(_Cols == 1)
+    return Map<Matrix>(data, size, 1);
+  else
+    return Map<Matrix>(data, 1, size);
+}
+
+template<typename _Scalar, int _Rows, int _Cols, MatrixStorageOrder _StorageOrder>
+const Map<Matrix<_Scalar, _Rows, _Cols, _StorageOrder> >
+Matrix<_Scalar, _Rows, _Cols, _StorageOrder>::map(const Scalar* data)
+{
+  return Map<Matrix>(data, _Rows, _Cols);
+}
+
+template<typename _Scalar, int _Rows, int _Cols, MatrixStorageOrder _StorageOrder>
+Map<Matrix<_Scalar, _Rows, _Cols, _StorageOrder> >
+Matrix<_Scalar, _Rows, _Cols, _StorageOrder>::map(Scalar* data, int rows, int cols)
+{
+  return Map<Matrix>(data, rows, cols);
+}
+
+template<typename _Scalar, int _Rows, int _Cols, MatrixStorageOrder _StorageOrder>
+Map<Matrix<_Scalar, _Rows, _Cols, _StorageOrder> >
+Matrix<_Scalar, _Rows, _Cols, _StorageOrder>::map(Scalar* data, int size)
+{
+  assert(_Cols == 1 || _Rows ==1);
+  if(_Cols == 1)
+    return Map<Matrix>(data, size, 1);
+  else
+    return Map<Matrix>(data, 1, size);
+}
+
+template<typename _Scalar, int _Rows, int _Cols, MatrixStorageOrder _StorageOrder>
+Map<Matrix<_Scalar, _Rows, _Cols, _StorageOrder> >
+Matrix<_Scalar, _Rows, _Cols, _StorageOrder>::map(Scalar* data)
+{
+  return Map<Matrix>(data, _Rows, _Cols);
+}
+
+template<typename _Scalar, int _Rows, int _Cols, MatrixStorageOrder _StorageOrder>
+Matrix<_Scalar, _Rows, _Cols, _StorageOrder>
+  ::Matrix(const Scalar *data, int rows, int cols)
+  : Storage(rows, cols)
+{
+  *this = map(data, rows, cols);
+}
+
+template<typename _Scalar, int _Rows, int _Cols, MatrixStorageOrder _StorageOrder>
+Matrix<_Scalar, _Rows, _Cols, _StorageOrder>
+  ::Matrix(const Scalar *data, int size)
+  : Storage(size)
+{
+  *this = map(data, size);
+}
+
+template<typename _Scalar, int _Rows, int _Cols, MatrixStorageOrder _StorageOrder>
+Matrix<_Scalar, _Rows, _Cols, _StorageOrder>
+  ::Matrix(const Scalar *data)
+  : Storage()
+{
+  *this = map(data);
+}
+
+#endif // EIGEN_MAP_H
diff --git a/Eigen/src/Core/MathFunctions.h b/Eigen/src/Core/MathFunctions.h
new file mode 100644
index 000000000..2cf28e8a7
--- /dev/null
+++ b/Eigen/src/Core/MathFunctions.h
@@ -0,0 +1,192 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_MATHFUNCTIONS_H
+#define EIGEN_MATHFUNCTIONS_H
+
+template<typename T> inline typename NumTraits<T>::Real precision();
+template<typename T> inline T random(T a, T b);
+template<typename T> inline T random();
+
+template<> inline int precision<int>() { return 0; }
+inline int real(int x)  { return x; }
+inline int imag(int)    { return 0; }
+inline int conj(int x)  { return x; }
+inline int abs(int x)   { return std::abs(x); }
+inline int abs2(int x)  { return x*x; }
+inline int sqrt(int)
+{
+  // Taking the square root of integers is not allowed
+  // (the square root does not always exist within the integers).
+  // Please cast to a floating-point type.
+  assert(false);
+  return 0;
+}
+template<> inline int random(int a, int b)
+{
+  // We can't just do rand()%n as only the high-order bits are really random
+  return a + static_cast<int>((b-a+1) * (rand() / (RAND_MAX + 1.0)));
+}
+template<> inline int random()
+{
+  return random<int>(-10, 10);
+}
+inline bool isMuchSmallerThan(int a, int, int = precision<int>())
+{
+  return a == 0;
+}
+inline bool isApprox(int a, int b, int = precision<int>())
+{
+  return a == b;
+}
+inline bool isApproxOrLessThan(int a, int b, int = precision<int>())
+{
+  return a <= b;
+}
+
+template<> inline float precision<float>() { return 1e-5f; }
+inline float real(float x)  { return x; }
+inline float imag(float)    { return 0.f; }
+inline float conj(float x)  { return x; }
+inline float abs(float x)   { return std::abs(x); }
+inline float abs2(float x)  { return x*x; }
+inline float sqrt(float x)  { return std::sqrt(x); }
+template<> inline float random(float a, float b)
+{
+  return a + (b-a) * std::rand() / RAND_MAX;
+}
+template<> inline float random()
+{
+  return random<float>(-10.0f, 10.0f);
+}
+inline bool isMuchSmallerThan(float a, float b, float prec = precision<float>())
+{
+  return std::abs(a) <= std::abs(b) * prec;
+}
+inline bool isApprox(float a, float b, float prec = precision<float>())
+{
+  return std::abs(a - b) <= std::min(std::abs(a), std::abs(b)) * prec;
+}
+inline bool isApproxOrLessThan(float a, float b, float prec = precision<float>())
+{
+  return a <= b || isApprox(a, b, prec);
+}
+
+template<> inline double precision<double>() { return 1e-11; }
+inline double real(double x)  { return x; }
+inline double imag(double)    { return 0.; }
+inline double conj(double x)  { return x; }
+inline double abs(double x)   { return std::abs(x); }
+inline double abs2(double x)  { return x*x; }
+inline double sqrt(double x)  { return std::sqrt(x); }
+template<> inline double random(double a, double b)
+{
+  return a + (b-a) * std::rand() / RAND_MAX;
+}
+template<> inline double random()
+{
+  return random<double>(-10.0, 10.0);
+}
+inline bool isMuchSmallerThan(double a, double b, double prec = precision<double>())
+{
+  return std::abs(a) <= std::abs(b) * prec;
+}
+inline bool isApprox(double a, double b, double prec = precision<double>())
+{
+  return std::abs(a - b) <= std::min(std::abs(a), std::abs(b)) * prec;
+}
+inline bool isApproxOrLessThan(double a, double b, double prec = precision<double>())
+{
+  return a <= b || isApprox(a, b, prec);
+}
+
+template<> inline float precision<std::complex<float> >() { return precision<float>(); }
+inline float real(const std::complex<float>& x) { return std::real(x); }
+inline float imag(const std::complex<float>& x) { return std::imag(x); }
+inline std::complex<float> conj(const std::complex<float>& x) { return std::conj(x); }
+inline float abs(const std::complex<float>& x) { return std::abs(x); }
+inline float abs2(const std::complex<float>& x) { return std::norm(x); }
+inline std::complex<float> sqrt(const std::complex<float>&)
+{
+  // Taking the square roots of complex numbers is not allowed,
+  // as this is ambiguous (there are two square roots).
+  // What were you trying to do?
+  assert(false);
+  return 0;
+}
+template<> inline std::complex<float> random()
+{
+  return std::complex<float>(random<float>(), random<float>());
+}
+inline bool isMuchSmallerThan(const std::complex<float>& a, const std::complex<float>& b, float prec = precision<float>())
+{
+  return abs2(a) <= abs2(b) * prec * prec;
+}
+inline bool isApprox(const std::complex<float>& a, const std::complex<float>& b, float prec = precision<float>())
+{
+  return isApprox(std::real(a), std::real(b), prec)
+      && isApprox(std::imag(a), std::imag(b), prec);
+}
+// isApproxOrLessThan wouldn't make sense for complex numbers
+
+template<> inline double precision<std::complex<double> >() { return precision<double>(); }
+inline double real(const std::complex<double>& x) { return std::real(x); }
+inline double imag(const std::complex<double>& x) { return std::imag(x); }
+inline std::complex<double> conj(const std::complex<double>& x) { return std::conj(x); }
+inline double abs(const std::complex<double>& x) { return std::abs(x); }
+inline double abs2(const std::complex<double>& x) { return std::norm(x); }
+template<> inline std::complex<double> random()
+{
+  return std::complex<double>(random<double>(), random<double>());
+}
+inline bool isMuchSmallerThan(const std::complex<double>& a, const std::complex<double>& b, double prec = precision<double>())
+{
+  return abs2(a) <= abs2(b) * prec * prec;
+}
+inline bool isApprox(const std::complex<double>& a, const std::complex<double>& b, double prec = precision<double>())
+{
+  return isApprox(std::real(a), std::real(b), prec)
+      && isApprox(std::imag(a), std::imag(b), prec);
+}
+// isApproxOrLessThan wouldn't make sense for complex numbers
+
+#define EIGEN_MAKE_MORE_OVERLOADED_COMPLEX_OPERATOR_STAR(T,U) \
+inline std::complex<T> operator*(U a, const std::complex<T>& b) \
+{ \
+  return std::complex<T>(static_cast<T>(a)*b.real(), \
+                         static_cast<T>(a)*b.imag()); \
+} \
+inline std::complex<T> operator*(const std::complex<T>& b, U a) \
+{ \
+  return std::complex<T>(static_cast<T>(a)*b.real(), \
+                         static_cast<T>(a)*b.imag()); \
+}
+
+EIGEN_MAKE_MORE_OVERLOADED_COMPLEX_OPERATOR_STAR(int,    float)
+EIGEN_MAKE_MORE_OVERLOADED_COMPLEX_OPERATOR_STAR(int,    double)
+EIGEN_MAKE_MORE_OVERLOADED_COMPLEX_OPERATOR_STAR(float,  double)
+EIGEN_MAKE_MORE_OVERLOADED_COMPLEX_OPERATOR_STAR(double, float)
+
+#endif // EIGEN_MATHFUNCTIONS_H
diff --git a/Eigen/src/Core/Matrix.h b/Eigen/src/Core/Matrix.h
new file mode 100644
index 000000000..812691156
--- /dev/null
+++ b/Eigen/src/Core/Matrix.h
@@ -0,0 +1,227 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_MATRIX_H
+#define EIGEN_MATRIX_H
+
+template<typename _Scalar, int _Rows, int _Cols,
+         MatrixStorageOrder _StorageOrder = EIGEN_DEFAULT_MATRIX_STORAGE_ORDER>
+class Matrix : public MatrixBase<_Scalar, Matrix<_Scalar, _Rows, _Cols, _StorageOrder> >,
+               public MatrixStorage<_Scalar, _Rows, _Cols>
+{
+  public:
+    friend class MatrixBase<_Scalar, Matrix>;
+    typedef      MatrixBase<_Scalar, Matrix>            Base;
+    typedef      MatrixStorage<_Scalar, _Rows, _Cols>   Storage;
+    typedef      _Scalar                                Scalar;
+    typedef      MatrixRef<Matrix>                      Ref;
+    friend class MatrixRef<Matrix>;
+    
+    const Scalar* data() const
+    { return Storage::m_data; }
+    
+    Scalar* data()
+    { return Storage::m_data; }
+    
+    static const MatrixStorageOrder StorageOrder = _StorageOrder;
+    
+  private:
+    static const int _RowsAtCompileTime = _Rows, _ColsAtCompileTime = _Cols;
+    
+    Ref _ref() const { return Ref(*this); }
+    
+    const Scalar& _coeff(int row, int col) const
+    {
+      if(_StorageOrder == ColumnDominant)
+        return (Storage::m_data)[row + col * Storage::_rows()];
+      else // RowDominant
+        return (Storage::m_data)[col + row * Storage::_cols()];
+    }
+    
+    Scalar& _coeffRef(int row, int col)
+    {
+      if(_StorageOrder == ColumnDominant)
+        return (Storage::m_data)[row + col * Storage::_rows()];
+      else // RowDominant
+        return (Storage::m_data)[col + row * Storage::_cols()];
+    }
+    
+  public:
+    template<typename OtherDerived> 
+    Matrix& operator=(const MatrixBase<Scalar, OtherDerived>& other)
+    {
+      if(_RowsAtCompileTime == 1)
+      {
+        assert(other.isVector());
+        resize(1, other.size());
+      }
+      else if(_ColsAtCompileTime == 1)
+      {
+        assert(other.isVector());
+        resize(other.size(), 1);
+      }
+      else resize(other.rows(), other.cols());
+      return Base::operator=(other);
+    }
+    
+    Matrix& operator=(const Matrix& other)
+    {
+      return operator=<Matrix>(other);
+    }
+    
+    EIGEN_INHERIT_ASSIGNMENT_OPERATOR(Matrix, +=)
+    EIGEN_INHERIT_ASSIGNMENT_OPERATOR(Matrix, -=)
+    EIGEN_INHERIT_SCALAR_ASSIGNMENT_OPERATOR(Matrix, *=)
+    EIGEN_INHERIT_SCALAR_ASSIGNMENT_OPERATOR(Matrix, /=)
+    
+    static const Map<Matrix> map(const Scalar* array, int rows, int cols);
+    static const Map<Matrix> map(const Scalar* array, int size);
+    static const Map<Matrix> map(const Scalar* array);
+    static Map<Matrix> map(Scalar* array, int rows, int cols);
+    static Map<Matrix> map(Scalar* array, int size);
+    static Map<Matrix> map(Scalar* array);
+    
+    explicit Matrix() : Storage()
+    {
+      assert(_RowsAtCompileTime > 0 && _ColsAtCompileTime > 0);
+    }
+    explicit Matrix(int dim) : Storage(dim)
+    {
+      assert(dim > 0);
+      assert((_RowsAtCompileTime == 1
+              && (_ColsAtCompileTime == Dynamic || _ColsAtCompileTime == dim))
+          || (_ColsAtCompileTime == 1
+              && (_RowsAtCompileTime == Dynamic || _RowsAtCompileTime == dim)));
+    }
+    
+    // this constructor is very tricky.
+    // When Matrix is a fixed-size vector type of size 2,
+    // Matrix(x,y) should mean "construct vector with coefficients x,y".
+    // Otherwise, Matrix(x,y) should mean "construct matrix with x rows and y cols".
+    // Note that in the case of fixed-size, Storage::Storage(int,int) does nothing,
+    // so it is harmless to call it and afterwards we just fill the m_data array
+    // with the two coefficients. In the case of dynamic size, Storage::Storage(int,int)
+    // does what we want to, so it only remains to add some asserts.
+    Matrix(int x, int y) : Storage(x, y)
+    {
+      if((_RowsAtCompileTime == 1 && _ColsAtCompileTime == 2)
+      || (_RowsAtCompileTime == 2 && _ColsAtCompileTime == 1))
+      {
+        (Storage::m_data)[0] = x;
+        (Storage::m_data)[1] = y;
+      }
+      else
+      {
+        assert(x > 0 && (_RowsAtCompileTime == Dynamic || _RowsAtCompileTime == x)
+            && y > 0 && (_ColsAtCompileTime == Dynamic || _ColsAtCompileTime == y));
+      }
+    }
+    Matrix(const float& x, const float& y)
+    {
+      assert((_RowsAtCompileTime == 1 && _ColsAtCompileTime == 2)
+          || (_RowsAtCompileTime == 2 && _ColsAtCompileTime == 1));
+      (Storage::m_data)[0] = x;
+      (Storage::m_data)[1] = y;
+    }
+    Matrix(const double& x, const double& y)
+    {
+      assert((_RowsAtCompileTime == 1 && _ColsAtCompileTime == 2)
+          || (_RowsAtCompileTime == 2 && _ColsAtCompileTime == 1));
+      (Storage::m_data)[0] = x;
+      (Storage::m_data)[1] = y;
+    }
+    Matrix(const Scalar& x, const Scalar& y, const Scalar& z)
+    {
+      assert((_RowsAtCompileTime == 1 && _ColsAtCompileTime == 3)
+          || (_RowsAtCompileTime == 3 && _ColsAtCompileTime == 1));
+      (Storage::m_data)[0] = x;
+      (Storage::m_data)[1] = y;
+      (Storage::m_data)[2] = z;
+    }
+    Matrix(const Scalar& x, const Scalar& y, const Scalar& z, const Scalar& w)
+    {
+      assert((_RowsAtCompileTime == 1 && _ColsAtCompileTime == 4)
+          || (_RowsAtCompileTime == 4 && _ColsAtCompileTime == 1));
+      (Storage::m_data)[0] = x;
+      (Storage::m_data)[1] = y;
+      (Storage::m_data)[2] = z;
+      (Storage::m_data)[3] = w;
+    }
+    Matrix(const Scalar *data, int rows, int cols);
+    Matrix(const Scalar *data, int size);
+    explicit Matrix(const Scalar *data);
+    
+    template<typename OtherDerived>
+    Matrix(const MatrixBase<Scalar, OtherDerived>& other)
+             : Storage(other.rows(), other.cols())
+    {
+      *this = other;
+    }
+    Matrix(const Matrix& other) : Storage(other.rows(), other.cols())
+    {
+      *this = other;
+    }
+    ~Matrix() {}
+};
+
+#define EIGEN_MAKE_TYPEDEFS(Type, TypeSuffix, Size, SizeSuffix) \
+typedef Matrix<Type, Size, Size> Matrix##SizeSuffix##TypeSuffix; \
+typedef Matrix<Type, Size, 1>    Vector##SizeSuffix##TypeSuffix; \
+typedef Matrix<Type, 1, Size>    RowVector##SizeSuffix##TypeSuffix;
+
+#define EIGEN_MAKE_TYPEDEFS_ALL_SIZES(Type, TypeSuffix) \
+EIGEN_MAKE_TYPEDEFS(Type, TypeSuffix, 2, 2) \
+EIGEN_MAKE_TYPEDEFS(Type, TypeSuffix, 3, 3) \
+EIGEN_MAKE_TYPEDEFS(Type, TypeSuffix, 4, 4) \
+EIGEN_MAKE_TYPEDEFS(Type, TypeSuffix, Dynamic, X)
+
+EIGEN_MAKE_TYPEDEFS_ALL_SIZES(int,                  i)
+EIGEN_MAKE_TYPEDEFS_ALL_SIZES(float,                f)
+EIGEN_MAKE_TYPEDEFS_ALL_SIZES(double,               d)
+EIGEN_MAKE_TYPEDEFS_ALL_SIZES(std::complex<float>,  cf)
+EIGEN_MAKE_TYPEDEFS_ALL_SIZES(std::complex<double>, cd)
+
+#undef EIGEN_MAKE_TYPEDEFS_ALL_SIZES
+#undef EIGEN_MAKE_TYPEDEFS
+
+#define EIGEN_USING_MATRIX_TYPEDEFS_FOR_TYPE_AND_SIZE(TypeSuffix, SizeSuffix) \
+using Eigen::Matrix##SizeSuffix##TypeSuffix; \
+using Eigen::Vector##SizeSuffix##TypeSuffix; \
+using Eigen::RowVector##SizeSuffix##TypeSuffix;
+
+#define EIGEN_USING_MATRIX_TYPEDEFS_FOR_TYPE(TypeSuffix) \
+EIGEN_USING_MATRIX_TYPEDEFS_FOR_TYPE_AND_SIZE(TypeSuffix, 2) \
+EIGEN_USING_MATRIX_TYPEDEFS_FOR_TYPE_AND_SIZE(TypeSuffix, 3) \
+EIGEN_USING_MATRIX_TYPEDEFS_FOR_TYPE_AND_SIZE(TypeSuffix, 4) \
+EIGEN_USING_MATRIX_TYPEDEFS_FOR_TYPE_AND_SIZE(TypeSuffix, X)
+
+#define EIGEN_USING_MATRIX_TYPEDEFS \
+EIGEN_USING_MATRIX_TYPEDEFS_FOR_TYPE(i) \
+EIGEN_USING_MATRIX_TYPEDEFS_FOR_TYPE(f) \
+EIGEN_USING_MATRIX_TYPEDEFS_FOR_TYPE(d) \
+EIGEN_USING_MATRIX_TYPEDEFS_FOR_TYPE(cf) \
+EIGEN_USING_MATRIX_TYPEDEFS_FOR_TYPE(cd)
+
+#endif // EIGEN_MATRIX_H
diff --git a/Eigen/src/Core/MatrixBase.h b/Eigen/src/Core/MatrixBase.h
new file mode 100644
index 000000000..6f9ebe651
--- /dev/null
+++ b/Eigen/src/Core/MatrixBase.h
@@ -0,0 +1,240 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_MATRIXBASE_H
+#define EIGEN_MATRIXBASE_H
+
+/** \class MatrixBase
+  *
+  * \brief Base class for all matrices, vectors, and expressions
+  *
+  * This class is the base that is inherited by all matrix, vector, and expression
+  * types. Most of the Eigen API is contained in this class.
+  *
+  * This class takes two template parameters:
+  *
+  * \a Scalar is the type of the coefficients, e.g. float, double, etc.
+  *
+  * \a Derived is the derived type, e.g. a matrix type, or an expression, etc.
+  * Indeed, a separate MatrixBase type is generated for each derived type
+  * so one knows from inside MatrixBase, at compile-time, what the derived type is.
+  *
+  * When writing a function taking Eigen objects as argument, if you want your function
+  * to take as argument any matrix, vector, or expression, just let it take a
+  * MatrixBase argument. As an example, here is a function printFirstRow which, given
+  * a matrix, vector, or expression \a x, prints the first row of \a x.
+  *
+  * \code
+    template<typename Scalar, typename Derived>
+    void printFirstRow(const Eigen::MatrixBase<Scalar, Derived>& x)
+    {
+      cout << x.row(0) << endl;
+    }
+  * \endcode
+  */
+template<typename Scalar, typename Derived> class MatrixBase
+{
+  public:
+    /** The number of rows at compile-time. This is just a copy of the value provided
+      * by the \a Derived type. If a value is not known at compile-time,
+      * it is set to the \a Dynamic constant.
+      * \sa rows(), cols(), ColsAtCompileTime, SizeAtCompileTime */
+    static const int RowsAtCompileTime = Derived::_RowsAtCompileTime;
+    
+    /** The number of columns at compile-time. This is just a copy of the value provided
+      * by the \a Derived type. If a value is not known at compile-time,
+      * it is set to the \a Dynamic constant.
+      * \sa rows(), cols(), RowsAtCompileTime, SizeAtCompileTime */
+    static const int ColsAtCompileTime = Derived::_ColsAtCompileTime;
+    
+    /** This is equal to the number of coefficients, i.e. the number of
+      * rows times the number of columns, or to \a Dynamic if this is not
+      * known at compile-time. \sa RowsAtCompileTime, ColsAtCompileTime */
+    static const int SizeAtCompileTime
+      = RowsAtCompileTime == Dynamic || ColsAtCompileTime == Dynamic
+      ? Dynamic : RowsAtCompileTime * ColsAtCompileTime;
+    /** This is set to true if either the number of rows or the number of
+      * columns is known at compile-time to be equal to 1. Indeed, in that case,
+      * we are dealing with a column-vector (if there is only one column) or with
+      * a row-vector (if there is only one row). */
+    static const bool IsVectorAtCompileTime = RowsAtCompileTime == 1 || ColsAtCompileTime == 1;
+    
+    /** This is the "reference type" used to pass objects of type MatrixBase as arguments
+      * to functions. If this MatrixBase type represents an expression, then \a Ref
+      * is just this MatrixBase type itself, i.e. expressions are just passed by value
+      * and the compiler is usually clever enough to optimize that. If, on the
+      * other hand, this MatrixBase type is an actual matrix or vector type, then \a Ref is
+      * a typedef to MatrixRef, which works as a reference, so that matrices and vectors
+      * are passed by reference, not by value. \sa ref()*/
+    typedef typename ForwardDecl<Derived>::Ref Ref;
+    
+    /** This is the "real scalar" type; if the \a Scalar type is already real numbers
+      * (e.g. int, float or double) then RealScalar is just the same as \a Scalar. If
+      * \a Scalar is \a std::complex<T> then RealScalar is \a T. */
+    typedef typename NumTraits<Scalar>::Real RealScalar;
+    
+    /** \returns the number of rows. \sa cols(), RowsAtCompileTime */
+    int rows() const { return static_cast<const Derived *>(this)->_rows(); }
+    /** \returns the number of columns. \sa row(), ColsAtCompileTime*/
+    int cols() const { return static_cast<const Derived *>(this)->_cols(); }
+    /** \returns the number of coefficients, which is \a rows()*cols().
+      * \sa rows(), cols(), SizeAtCompileTime. */
+    int size() const { return rows() * cols(); }
+    /** \returns true if either the number of rows or the number of columns is equal to 1.
+      * In other words, this function returns
+      * \code rows()==1 || cols()==1 \endcode
+      * \sa rows(), cols(), IsVectorAtCompileTime. */
+    bool isVector() const { return rows()==1 || cols()==1; }
+    /** \returns a Ref to *this. \sa Ref */
+    Ref ref() const
+    { return static_cast<const Derived *>(this)->_ref(); }
+    
+    /** Copies \a other into *this. \returns a reference to *this. */
+    template<typename OtherDerived>
+    Derived& operator=(const MatrixBase<Scalar, OtherDerived>& other);
+    
+    // Special case of the above template operator=, in order to prevent the compiler
+    //from generating a default operator= (issue hit with g++ 4.1)
+    Derived& operator=(const MatrixBase& other)
+    {
+      return this->operator=<Derived>(other);
+    }
+    
+    template<typename NewScalar> const Cast<NewScalar, Derived> cast() const;
+    
+    Row<Derived> row(int i);
+    const Row<Derived> row(int i) const;
+    
+    Column<Derived> col(int i);
+    const Column<Derived> col(int i) const;
+    
+    Minor<Derived> minor(int row, int col);
+    const Minor<Derived> minor(int row, int col) const;
+    
+    DynBlock<Derived> dynBlock(int startRow, int startCol, int blockRows, int blockCols);
+    const DynBlock<Derived>
+    dynBlock(int startRow, int startCol, int blockRows, int blockCols) const;
+    
+    template<int BlockRows, int BlockCols>
+    Block<Derived, BlockRows, BlockCols> block(int startRow, int startCol);
+    template<int BlockRows, int BlockCols>
+    const Block<Derived, BlockRows, BlockCols> block(int startRow, int startCol) const;
+    
+    Transpose<Derived> transpose();
+    const Transpose<Derived> transpose() const;
+    
+    const Conjugate<Derived> conjugate() const;
+    const Transpose<Conjugate<Derived> > adjoint() const;
+    Scalar trace() const;
+    
+    template<typename OtherDerived>
+    Scalar dot(const OtherDerived& other) const;
+    RealScalar norm2() const;
+    RealScalar norm()  const;
+    const ScalarMultiple<RealScalar, Derived> normalized() const;
+    
+    static const Eval<Random<Derived> > random(int rows, int cols);
+    static const Eval<Random<Derived> > random(int size);
+    static const Eval<Random<Derived> > random();
+    static const Zero<Derived> zero(int rows, int cols);
+    static const Zero<Derived> zero(int size);
+    static const Zero<Derived> zero();
+    static const Ones<Derived> ones(int rows, int cols);
+    static const Ones<Derived> ones(int size);
+    static const Ones<Derived> ones();
+    static const Identity<Derived> identity(int rows = RowsAtCompileTime);
+    
+    template<typename OtherDerived>
+    static const DiagonalMatrix<Derived, OtherDerived>
+    diagonal(const OtherDerived& coeffs);
+    
+    DiagonalCoeffs<Derived> diagonal();
+    const DiagonalCoeffs<Derived> diagonal() const;
+    
+    template<typename OtherDerived>
+    bool isApprox(
+      const OtherDerived& other,
+      const typename NumTraits<Scalar>::Real& prec = precision<Scalar>()
+    ) const;
+    bool isMuchSmallerThan(
+      const typename NumTraits<Scalar>::Real& other,
+      const typename NumTraits<Scalar>::Real& prec = precision<Scalar>()
+    ) const;
+    template<typename OtherDerived>
+    bool isMuchSmallerThan(
+      const MatrixBase<Scalar, OtherDerived>& other,
+      const typename NumTraits<Scalar>::Real& prec = precision<Scalar>()
+    ) const;
+    
+    template<typename OtherDerived>
+    const Product<Derived, OtherDerived>
+    lazyProduct(const MatrixBase<Scalar, OtherDerived>& other) const EIGEN_ALWAYS_INLINE;
+    
+    const Opposite<Derived> operator-() const;
+    
+    template<typename OtherDerived>
+    Derived& operator+=(const MatrixBase<Scalar, OtherDerived>& other);
+    template<typename OtherDerived>
+    Derived& operator-=(const MatrixBase<Scalar, OtherDerived>& other);
+    template<typename OtherDerived>
+    Derived& operator*=(const MatrixBase<Scalar, OtherDerived>& other);
+   
+    Derived& operator*=(const int& other);
+    Derived& operator*=(const float& other);
+    Derived& operator*=(const double& other);
+    Derived& operator*=(const std::complex<float>& other);
+    Derived& operator*=(const std::complex<double>& other);
+    
+    Derived& operator/=(const int& other);
+    Derived& operator/=(const float& other);
+    Derived& operator/=(const double& other);
+    Derived& operator/=(const std::complex<float>& other);
+    Derived& operator/=(const std::complex<double>& other);
+
+    Scalar coeff(int row, int col) const;
+    Scalar operator()(int row, int col) const;
+    
+    Scalar& coeffRef(int row, int col);
+    Scalar& operator()(int row, int col);
+    
+    Scalar coeff(int index) const;
+    Scalar operator[](int index) const;
+    
+    Scalar& coeffRef(int index);
+    Scalar& operator[](int index);
+    
+    Scalar x() const;
+    Scalar y() const;
+    Scalar z() const;
+    Scalar w() const;
+    Scalar& x();
+    Scalar& y();
+    Scalar& z();
+    Scalar& w();
+
+    const Eval<Derived> eval() const EIGEN_ALWAYS_INLINE;
+};
+
+#endif // EIGEN_MATRIXBASE_H
diff --git a/Eigen/src/Core/MatrixRef.h b/Eigen/src/Core/MatrixRef.h
new file mode 100644
index 000000000..ffdac9d8b
--- /dev/null
+++ b/Eigen/src/Core/MatrixRef.h
@@ -0,0 +1,63 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_MATRIXREF_H
+#define EIGEN_MATRIXREF_H
+
+template<typename MatrixType> class MatrixRef
+ : public MatrixBase<typename MatrixType::Scalar, MatrixRef<MatrixType> >
+{
+  public:
+    typedef typename MatrixType::Scalar Scalar;
+    friend class MatrixBase<Scalar, MatrixRef>;
+    
+    MatrixRef(const MatrixType& matrix) : m_matrix(matrix) {}
+    MatrixRef(const MatrixRef& other) : m_matrix(other.m_matrix) {}
+    ~MatrixRef() {}
+
+    EIGEN_INHERIT_ASSIGNMENT_OPERATORS(MatrixRef)
+
+  private:
+    static const int _RowsAtCompileTime = MatrixType::RowsAtCompileTime,
+                     _ColsAtCompileTime = MatrixType::ColsAtCompileTime;
+    
+    int _rows() const { return m_matrix.rows(); }
+    int _cols() const { return m_matrix.cols(); }
+
+    const Scalar& _coeff(int row, int col) const
+    {
+      return m_matrix._coeff(row, col);
+    }
+    
+    Scalar& _coeffRef(int row, int col)
+    {
+      return const_cast<MatrixType*>(&m_matrix)->_coeffRef(row, col);
+    }
+
+  protected:
+    const MatrixType& m_matrix;
+};
+
+#endif // EIGEN_MATRIXREF_H
diff --git a/Eigen/src/Core/MatrixStorage.h b/Eigen/src/Core/MatrixStorage.h
new file mode 100644
index 000000000..112d904b9
--- /dev/null
+++ b/Eigen/src/Core/MatrixStorage.h
@@ -0,0 +1,183 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_MATRIXSTORAGE_H
+#define EIGEN_MATRIXSTORAGE_H
+
+template<typename Scalar,
+         int      RowsAtCompileTime,
+         int      ColsAtCompileTime>
+class MatrixStorage
+{
+  protected:
+    Scalar m_data[RowsAtCompileTime * ColsAtCompileTime];
+  
+    void resize(int rows, int cols)
+    {
+      EIGEN_ONLY_USED_FOR_DEBUG(rows);
+      EIGEN_ONLY_USED_FOR_DEBUG(cols);
+      assert(rows == RowsAtCompileTime && cols == ColsAtCompileTime);
+    }
+    
+    int _rows() const
+    { return RowsAtCompileTime; }
+    
+    int _cols() const
+    { return ColsAtCompileTime; }
+
+  public:
+    MatrixStorage() {}
+    MatrixStorage(int) {}
+    MatrixStorage(int, int) {}
+    ~MatrixStorage() {};
+};
+
+template<typename Scalar, int ColsAtCompileTime>
+class MatrixStorage<Scalar, Dynamic, ColsAtCompileTime>
+{
+  protected:
+    int m_rows;
+    Scalar* m_data;
+    
+    void resize(int rows, int cols)
+    {
+      EIGEN_ONLY_USED_FOR_DEBUG(cols);
+      assert(rows > 0 && cols == ColsAtCompileTime);
+      if(rows > m_rows)
+      {
+        delete[] m_data;
+        m_data  = new Scalar[rows * ColsAtCompileTime];
+      }
+      m_rows = rows;
+    }
+    
+    int _rows() const
+    { return m_rows; }
+    
+    int _cols() const
+    { return ColsAtCompileTime; }
+    
+  public:
+    MatrixStorage(int dim) : m_rows(dim)
+    {
+      m_data = new Scalar[m_rows * ColsAtCompileTime];
+    }
+  
+    MatrixStorage(int rows, int) : m_rows(rows)
+    {
+      m_data = new Scalar[m_rows * ColsAtCompileTime];
+    }
+    
+    ~MatrixStorage()
+    { delete[] m_data; }
+    
+  private:
+    MatrixStorage();
+};
+
+template<typename Scalar, int RowsAtCompileTime>
+class MatrixStorage<Scalar, RowsAtCompileTime, Dynamic>
+{
+  protected:
+    int m_cols;
+    Scalar* m_data;
+    
+    void resize(int rows, int cols)
+    {
+      EIGEN_ONLY_USED_FOR_DEBUG(rows);
+      assert(rows == RowsAtCompileTime && cols > 0);
+      if(cols > m_cols)
+      {
+        delete[] m_data;
+        m_data  = new Scalar[cols * RowsAtCompileTime];
+      }
+      m_cols = cols;
+    }
+    
+    int _rows() const
+    { return RowsAtCompileTime; }
+    
+    int _cols() const
+    { return m_cols; }
+    
+  public:
+    MatrixStorage(int dim) : m_cols(dim)
+    {
+      m_data = new Scalar[m_cols * RowsAtCompileTime];
+    }
+    
+    MatrixStorage(int, int cols) : m_cols(cols)
+    {
+      m_data = new Scalar[m_cols * RowsAtCompileTime];
+    }
+    
+    ~MatrixStorage()
+    { delete[] m_data; }
+    
+  private:
+    MatrixStorage();
+};
+
+template<typename Scalar>
+class MatrixStorage<Scalar, Dynamic, Dynamic>
+{
+  protected:
+    int m_rows, m_cols;
+    Scalar* m_data;
+    
+    void resize(int rows, int cols)
+    {
+      assert(rows > 0 && cols > 0);
+      if(rows * cols > m_rows * m_cols)
+      {
+        delete[] m_data;
+        m_data  = new Scalar[rows * cols];
+      }
+      m_rows = rows;
+      m_cols = cols;
+    }
+    
+    int _rows() const
+    { return m_rows; }
+    
+    int _cols() const
+    { return m_cols; }
+    
+  public:
+    
+    MatrixStorage(int rows, int cols) : m_rows(rows), m_cols(cols)
+    {
+      m_data = new Scalar[m_rows * m_cols];
+    }
+    
+    ~MatrixStorage()
+    { delete[] m_data; }
+    
+  private:
+    MatrixStorage();
+    MatrixStorage(int dim);
+};
+
+#endif // EIGEN_MATRIXSTORAGE_H
diff --git a/Eigen/src/Core/Minor.h b/Eigen/src/Core/Minor.h
new file mode 100644
index 000000000..ab2e76963
--- /dev/null
+++ b/Eigen/src/Core/Minor.h
@@ -0,0 +1,112 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_MINOR_H
+#define EIGEN_MINOR_H
+
+/** \class Minor
+  *
+  * \brief Expression of a minor
+  *
+  * \param MatrixType the type of the object in which we are taking a minor
+  *
+  * This class represents an expression of a minor. It is the return
+  * type of MatrixBase::minor() and most of the time this is the only way it
+  * is used.
+  *
+  * \sa MatrixBase::minor()
+  */
+template<typename MatrixType> class Minor
+  : public MatrixBase<typename MatrixType::Scalar, Minor<MatrixType> >
+{
+  public:
+    typedef typename MatrixType::Scalar Scalar;
+    typedef typename MatrixType::Ref MatRef;
+    friend class MatrixBase<Scalar, Minor<MatrixType> >;
+    
+    Minor(const MatRef& matrix,
+                int row, int col)
+      : m_matrix(matrix), m_row(row), m_col(col)
+    {
+      assert(row >= 0 && row < matrix.rows()
+          && col >= 0 && col < matrix.cols());
+    }
+    
+    Minor(const Minor& other)
+      : m_matrix(other.m_matrix), m_row(other.m_row), m_col(other.m_col) {}
+    
+    EIGEN_INHERIT_ASSIGNMENT_OPERATORS(Minor)
+    
+  private:
+    static const int
+      _RowsAtCompileTime = (MatrixType::RowsAtCompileTime != Dynamic) ?
+                           MatrixType::RowsAtCompileTime - 1 : Dynamic,
+      _ColsAtCompileTime = (MatrixType::ColsAtCompileTime != Dynamic) ?
+                           MatrixType::ColsAtCompileTime - 1 : Dynamic;
+
+    const Minor& _ref() const { return *this; }
+    int _rows() const { return m_matrix.rows() - 1; }
+    int _cols() const { return m_matrix.cols() - 1; }
+    
+    Scalar& _coeffRef(int row, int col)
+    {
+      return m_matrix.coeffRef(row + (row >= m_row), col + (col >= m_col));
+    }
+    
+    Scalar _coeff(int row, int col) const
+    {
+      return m_matrix.coeff(row + (row >= m_row), col + (col >= m_col));
+    }
+    
+  protected:
+    MatRef m_matrix;
+    const int m_row, m_col;
+};
+
+/** \return an expression of the (\a row, \a col)-minor of *this,
+  * i.e. an expression constructed from *this by removing the specified
+  * row and column.
+  *
+  * Example: \include MatrixBase_minor.cpp
+  * Output: \verbinclude MatrixBase_minor.out
+  *
+  * \sa class Minor
+  */
+template<typename Scalar, typename Derived>
+Minor<Derived>
+MatrixBase<Scalar, Derived>::minor(int row, int col)
+{
+  return Minor<Derived>(ref(), row, col);
+}
+
+/** This is the const version of minor(). */
+template<typename Scalar, typename Derived>
+const Minor<Derived>
+MatrixBase<Scalar, Derived>::minor(int row, int col) const
+{
+  return Minor<Derived>(ref(), row, col);
+}
+
+#endif // EIGEN_MINOR_H
diff --git a/Eigen/src/Core/NumTraits.h b/Eigen/src/Core/NumTraits.h
new file mode 100644
index 000000000..d020c60f4
--- /dev/null
+++ b/Eigen/src/Core/NumTraits.h
@@ -0,0 +1,63 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_NUMTRAITS_H
+#define EIGEN_NUMTRAITS_H
+
+template<typename T> struct NumTraits;
+
+template<> struct NumTraits<int>
+{
+  typedef int Real;
+  typedef double FloatingPoint;
+  static const bool IsComplex = false;
+  static const bool HasFloatingPoint = false;
+};
+
+template<> struct NumTraits<float>
+{
+  typedef float Real;
+  typedef float FloatingPoint;
+  static const bool IsComplex = false;
+  static const bool HasFloatingPoint = true;
+};
+
+template<> struct NumTraits<double>
+{
+  typedef double Real;
+  typedef double FloatingPoint;
+  static const bool IsComplex = false;
+  static const bool HasFloatingPoint = true;
+};
+
+template<typename _Real> struct NumTraits<std::complex<_Real> >
+{
+  typedef _Real Real;
+  typedef std::complex<_Real> FloatingPoint;
+  static const bool IsComplex = true;
+  static const bool HasFloatingPoint = NumTraits<Real>::HasFloatingPoint;
+};
+
+#endif // EIGEN_NUMTRAITS_H
diff --git a/Eigen/src/Core/Ones.h b/Eigen/src/Core/Ones.h
new file mode 100644
index 000000000..36fbe58b0
--- /dev/null
+++ b/Eigen/src/Core/Ones.h
@@ -0,0 +1,78 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_ONES_H
+#define EIGEN_ONES_H
+
+template<typename MatrixType> class Ones : NoOperatorEquals,
+  public MatrixBase<typename MatrixType::Scalar, Ones<MatrixType> >
+{
+  public:
+    typedef typename MatrixType::Scalar Scalar;
+    friend class MatrixBase<Scalar, Ones<MatrixType> >;
+    
+    Ones(int rows, int cols) : m_rows(rows), m_cols(cols)
+    {
+      assert(rows > 0 && cols > 0);
+    }
+    
+  private:
+    static const int _RowsAtCompileTime = MatrixType::RowsAtCompileTime,
+                     _ColsAtCompileTime = MatrixType::ColsAtCompileTime;
+
+    const Ones& _ref() const { return *this; }
+    int _rows() const { return m_rows; }
+    int _cols() const { return m_cols; }
+    
+    Scalar _coeff(int, int) const
+    {
+      return static_cast<Scalar>(1);
+    }
+    
+  protected:
+    int m_rows, m_cols;
+};
+
+template<typename Scalar, typename Derived>
+const Ones<Derived> MatrixBase<Scalar, Derived>::ones(int rows, int cols)
+{
+  return Ones<Derived>(rows, cols);
+}
+
+template<typename Scalar, typename Derived>
+const Ones<Derived> MatrixBase<Scalar, Derived>::ones(int size)
+{
+  assert(IsVectorAtCompileTime);
+  if(RowsAtCompileTime == 1) return Ones<Derived>(1, size);
+  else return Ones<Derived>(size, 1);
+}
+
+template<typename Scalar, typename Derived>
+const Ones<Derived> MatrixBase<Scalar, Derived>::ones()
+{
+  return Ones<Derived>(RowsAtCompileTime, ColsAtCompileTime);
+}
+
+#endif // EIGEN_ONES_H
diff --git a/Eigen/src/Core/OperatorEquals.h b/Eigen/src/Core/OperatorEquals.h
new file mode 100644
index 000000000..30d42b670
--- /dev/null
+++ b/Eigen/src/Core/OperatorEquals.h
@@ -0,0 +1,131 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2007 Michael Olbrich <michael.olbrich@gmx.net>
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_OPERATOREQUALS_H
+#define EIGEN_OPERATOREQUALS_H
+
+template<typename Derived1, typename Derived2, int UnrollCount, int Rows>
+struct MatrixOperatorEqualsUnroller
+{
+  static const int col = (UnrollCount-1) / Rows;
+  static const int row = (UnrollCount-1) % Rows;
+
+  static void run(Derived1 &dst, const Derived2 &src)
+  {
+    MatrixOperatorEqualsUnroller<Derived1, Derived2, UnrollCount-1, Rows>::run(dst, src);
+    dst.coeffRef(row, col) = src.coeff(row, col);
+  }
+};
+
+// prevent buggy user code from causing an infinite recursion
+template<typename Derived1, typename Derived2, int UnrollCount>
+struct MatrixOperatorEqualsUnroller<Derived1, Derived2, UnrollCount, 0>
+{
+  static void run(Derived1 &, const Derived2 &) {}
+};
+
+template<typename Derived1, typename Derived2, int Rows>
+struct MatrixOperatorEqualsUnroller<Derived1, Derived2, 1, Rows>
+{
+  static void run(Derived1 &dst, const Derived2 &src)
+  {
+    dst.coeffRef(0, 0) = src.coeff(0, 0);
+  }
+};
+
+template<typename Derived1, typename Derived2, int Rows>
+struct MatrixOperatorEqualsUnroller<Derived1, Derived2, Dynamic, Rows>
+{
+  static void run(Derived1 &, const Derived2 &) {}
+};
+
+template<typename Derived1, typename Derived2, int UnrollCount>
+struct VectorOperatorEqualsUnroller
+{
+  static const int index = UnrollCount - 1;
+
+  static void run(Derived1 &dst, const Derived2 &src)
+  {
+    VectorOperatorEqualsUnroller<Derived1, Derived2, UnrollCount-1>::run(dst, src);
+    dst.coeffRef(index) = src.coeff(index);
+  }
+};
+
+// prevent buggy user code from causing an infinite recursion
+template<typename Derived1, typename Derived2>
+struct VectorOperatorEqualsUnroller<Derived1, Derived2, 0>
+{
+  static void run(Derived1 &, const Derived2 &) {}
+};
+
+template<typename Derived1, typename Derived2>
+struct VectorOperatorEqualsUnroller<Derived1, Derived2, 1>
+{
+  static void run(Derived1 &dst, const Derived2 &src)
+  {
+    dst.coeffRef(0) = src.coeff(0);
+  }
+};
+
+template<typename Derived1, typename Derived2>
+struct VectorOperatorEqualsUnroller<Derived1, Derived2, Dynamic>
+{
+  static void run(Derived1 &, const Derived2 &) {}
+};
+
+template<typename Scalar, typename Derived>
+template<typename OtherDerived>
+Derived& MatrixBase<Scalar, Derived>
+  ::operator=(const MatrixBase<Scalar, OtherDerived>& other)
+{
+  if(IsVectorAtCompileTime && OtherDerived::IsVectorAtCompileTime) // copying a vector expression into a vector
+  {
+    assert(size() == other.size());
+    if(EIGEN_UNROLLED_LOOPS && SizeAtCompileTime != Dynamic && SizeAtCompileTime <= 25)
+      VectorOperatorEqualsUnroller
+        <Derived, OtherDerived, SizeAtCompileTime>::run
+          (*static_cast<Derived*>(this), *static_cast<const OtherDerived*>(&other));
+    else
+      for(int i = 0; i < size(); i++)
+        coeffRef(i) = other.coeff(i);
+    return *static_cast<Derived*>(this);
+  }
+  else // all other cases (typically, but not necessarily, copying a matrix)
+  {
+    assert(rows() == other.rows() && cols() == other.cols());
+    if(EIGEN_UNROLLED_LOOPS && SizeAtCompileTime != Dynamic && SizeAtCompileTime <= 25)
+      MatrixOperatorEqualsUnroller
+        <Derived, OtherDerived, SizeAtCompileTime, RowsAtCompileTime>::run
+          (*static_cast<Derived*>(this), *static_cast<const OtherDerived*>(&other));
+    else
+      for(int j = 0; j < cols(); j++) //traverse in column-dominant order
+        for(int i = 0; i < rows(); i++)
+          coeffRef(i, j) = other.coeff(i, j);
+    return *static_cast<Derived*>(this);
+  }
+}
+
+#endif // EIGEN_OPERATOREQUALS_H
diff --git a/Eigen/src/Core/Opposite.h b/Eigen/src/Core/Opposite.h
new file mode 100644
index 000000000..21be7f614
--- /dev/null
+++ b/Eigen/src/Core/Opposite.h
@@ -0,0 +1,66 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_OPPOSITE_H
+#define EIGEN_OPPOSITE_H
+
+template<typename MatrixType> class Opposite : NoOperatorEquals,
+  public MatrixBase<typename MatrixType::Scalar, Opposite<MatrixType> >
+{
+  public:
+    typedef typename MatrixType::Scalar Scalar;
+    typedef typename MatrixType::Ref MatRef;
+    friend class MatrixBase<Scalar, Opposite<MatrixType> >;
+    
+    Opposite(const MatRef& matrix) : m_matrix(matrix) {}
+    
+    Opposite(const Opposite& other)
+      : m_matrix(other.m_matrix) {}
+    
+  private:
+    static const int _RowsAtCompileTime = MatrixType::RowsAtCompileTime,
+                     _ColsAtCompileTime = MatrixType::ColsAtCompileTime;
+
+    const Opposite& _ref() const { return *this; }
+    int _rows() const { return m_matrix.rows(); }
+    int _cols() const { return m_matrix.cols(); }
+    
+    Scalar _coeff(int row, int col) const
+    {
+      return -(m_matrix.coeff(row, col));
+    }
+    
+  protected:
+    MatRef m_matrix;
+};
+
+template<typename Scalar, typename Derived>
+const Opposite<Derived>
+MatrixBase<Scalar, Derived>::operator-() const
+{
+  return Opposite<Derived>(static_cast<const Derived*>(this)->ref());
+}
+
+#endif // EIGEN_OPPOSITE_H
diff --git a/Eigen/src/Core/Product.h b/Eigen/src/Core/Product.h
new file mode 100644
index 000000000..4a89e3a99
--- /dev/null
+++ b/Eigen/src/Core/Product.h
@@ -0,0 +1,142 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_PRODUCT_H
+#define EIGEN_PRODUCT_H
+
+template<int Index, int Size, typename Lhs, typename Rhs>
+struct ProductUnroller
+{
+  static void run(int row, int col, const Lhs& lhs, const Rhs& rhs,
+                  typename Lhs::Scalar &res)
+  {
+    ProductUnroller<Index-1, Size, Lhs, Rhs>::run(row, col, lhs, rhs, res);
+    res += lhs.coeff(row, Index) * rhs.coeff(Index, col);
+  }
+};
+
+template<int Size, typename Lhs, typename Rhs>
+struct ProductUnroller<0, Size, Lhs, Rhs>
+{
+  static void run(int row, int col, const Lhs& lhs, const Rhs& rhs,
+                  typename Lhs::Scalar &res)
+  {
+    res = lhs.coeff(row, 0) * rhs.coeff(0, col);
+  }
+};
+
+template<int Index, typename Lhs, typename Rhs>
+struct ProductUnroller<Index, Dynamic, Lhs, Rhs>
+{
+  static void run(int, int, const Lhs&, const Rhs&, typename Lhs::Scalar&) {}
+};
+
+// prevent buggy user code from causing an infinite recursion
+template<int Index, typename Lhs, typename Rhs>
+struct ProductUnroller<Index, 0, Lhs, Rhs>
+{
+  static void run(int, int, const Lhs&, const Rhs&, typename Lhs::Scalar&) {}
+};
+
+template<typename Lhs, typename Rhs> class Product : NoOperatorEquals,
+  public MatrixBase<typename Lhs::Scalar, Product<Lhs, Rhs> >
+{
+  public:
+    typedef typename Lhs::Scalar Scalar;
+    typedef typename Lhs::Ref LhsRef;
+    typedef typename Rhs::Ref RhsRef;
+    friend class MatrixBase<Scalar, Product>;
+    
+    Product(const LhsRef& lhs, const RhsRef& rhs)
+      : m_lhs(lhs), m_rhs(rhs) 
+    {
+      assert(lhs.cols() == rhs.rows());
+    }
+    
+    Product(const Product& other)
+      : m_lhs(other.m_lhs), m_rhs(other.m_rhs) {}
+    
+  private:
+    static const int _RowsAtCompileTime = Lhs::RowsAtCompileTime,
+                     _ColsAtCompileTime = Rhs::ColsAtCompileTime;
+
+    const Product& _ref() const { return *this; }
+    int _rows() const { return m_lhs.rows(); }
+    int _cols() const { return m_rhs.cols(); }
+    
+    Scalar _coeff(int row, int col) const
+    {
+      Scalar res;
+      if(EIGEN_UNROLLED_LOOPS
+      && Lhs::ColsAtCompileTime != Dynamic && Lhs::ColsAtCompileTime <= 16)
+        ProductUnroller<Lhs::ColsAtCompileTime-1, Lhs::ColsAtCompileTime, LhsRef, RhsRef>
+          ::run(row, col, m_lhs, m_rhs, res);
+      else
+      {
+        res = m_lhs.coeff(row, 0) * m_rhs.coeff(0, col);
+        for(int i = 1; i < m_lhs.cols(); i++)
+          res += m_lhs.coeff(row, i) * m_rhs.coeff(i, col);
+      }
+      return res;
+    }
+    
+  protected:
+    const LhsRef m_lhs;
+    const RhsRef m_rhs;
+};
+
+template<typename Scalar, typename Derived>
+template<typename OtherDerived>
+const Product<Derived, OtherDerived>
+MatrixBase<Scalar, Derived>::lazyProduct(const MatrixBase<Scalar, OtherDerived> &other) const
+{
+  return Product<Derived, OtherDerived>(ref(), other.ref());
+}
+
+/** \relates MatrixBase
+  *
+  * \returns the matrix product of \a mat1 and \a mat2.
+  *
+  * \note This function causes an immediate evaluation. If you want to perform a matrix product
+  * without immediate evaluation, use MatrixBase::lazyProduct() instead.
+  *
+  * \sa MatrixBase::lazyProduct(), MatrixBase::operator*=(const MatrixBase&)
+  */
+template<typename Scalar, typename Derived1, typename Derived2>
+Eval<Product<Derived1, Derived2> >
+operator*(const MatrixBase<Scalar, Derived1> &mat1, const MatrixBase<Scalar, Derived2> &mat2)
+{
+  return mat1.lazyProduct(mat2).eval();
+}
+
+template<typename Scalar, typename Derived>
+template<typename OtherDerived>
+Derived &
+MatrixBase<Scalar, Derived>::operator*=(const MatrixBase<Scalar, OtherDerived> &other)
+{
+  return *this = *this * other;
+}
+
+#endif // EIGEN_PRODUCT_H
diff --git a/Eigen/src/Core/Random.h b/Eigen/src/Core/Random.h
new file mode 100644
index 000000000..a8c00c858
--- /dev/null
+++ b/Eigen/src/Core/Random.h
@@ -0,0 +1,78 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_RANDOM_H
+#define EIGEN_RANDOM_H
+
+template<typename MatrixType> class Random : NoOperatorEquals,
+  public MatrixBase<typename MatrixType::Scalar, Random<MatrixType> >
+{
+  public:
+    typedef typename MatrixType::Scalar Scalar;
+    friend class MatrixBase<Scalar, Random<MatrixType> >;
+    
+    Random(int rows, int cols) : m_rows(rows), m_cols(cols)
+    {
+      assert(rows > 0 && cols > 0);
+    }
+   
+  private:
+    static const int _RowsAtCompileTime = MatrixType::RowsAtCompileTime,
+                     _ColsAtCompileTime = MatrixType::ColsAtCompileTime;
+
+    const Random& _ref() const { return *this; }
+    int _rows() const { return m_rows; }
+    int _cols() const { return m_cols; }
+    
+    Scalar _coeff(int, int) const
+    {
+      return random<Scalar>();
+    }
+    
+  protected:
+    int m_rows, m_cols;
+};
+
+template<typename Scalar, typename Derived>
+const Eval<Random<Derived> > MatrixBase<Scalar, Derived>::random(int rows, int cols)
+{
+  return Random<Derived>(rows, cols).eval();
+}
+
+template<typename Scalar, typename Derived>
+const Eval<Random<Derived> > MatrixBase<Scalar, Derived>::random(int size)
+{
+  assert(IsVectorAtCompileTime);
+  if(RowsAtCompileTime == 1) return Random<Derived>(1, size).eval();
+  else return Random<Derived>(size, 1).eval();
+}
+
+template<typename Scalar, typename Derived>
+const Eval<Random<Derived> > MatrixBase<Scalar, Derived>::random()
+{
+  return Random<Derived>(RowsAtCompileTime, ColsAtCompileTime).eval();
+}
+
+#endif // EIGEN_RANDOM_H
diff --git a/Eigen/src/Core/Row.h b/Eigen/src/Core/Row.h
new file mode 100644
index 000000000..34c6fe3b0
--- /dev/null
+++ b/Eigen/src/Core/Row.h
@@ -0,0 +1,119 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_ROW_H
+#define EIGEN_ROW_H
+
+/** \class Row
+  *
+  * \brief Expression of a row
+  *
+  * \param MatrixType the type of the object in which we are taking a row
+  *
+  * This class represents an expression of a row. It is the return
+  * type of MatrixBase::row() and most of the time this is the only way it
+  * is used.
+  *
+  * However, if you want to directly maniputate row expressions,
+  * for instance if you want to write a function returning such an expression, you
+  * will need to use this class.
+  *
+  * Here is an example illustrating this:
+  * \include class_Row.cpp
+  * Output: \verbinclude class_Row.out
+  *
+  * \sa MatrixBase::row()
+  */
+template<typename MatrixType> class Row
+  : public MatrixBase<typename MatrixType::Scalar, Row<MatrixType> >
+{
+  public:
+    typedef typename MatrixType::Scalar Scalar;
+    typedef typename MatrixType::Ref MatRef;
+    friend class MatrixBase<Scalar, Row<MatrixType> >;
+
+    Row(const MatRef& matrix, int row)
+      : m_matrix(matrix), m_row(row)
+    {
+      assert(row >= 0 && row < matrix.rows());
+    }
+    
+    Row(const Row& other)
+      : m_matrix(other.m_matrix), m_row(other.m_row) {}
+    
+    template<typename OtherDerived>
+    Row& operator=(const MatrixBase<Scalar, OtherDerived>& other)
+    {
+      return MatrixBase<Scalar, Row<MatrixType> >::operator=(other);
+    }
+    
+    EIGEN_INHERIT_ASSIGNMENT_OPERATORS(Row)
+    
+  private:
+    static const int _RowsAtCompileTime = 1,
+                     _ColsAtCompileTime = MatrixType::ColsAtCompileTime;
+
+    const Row& _ref() const { return *this; }
+    
+    int _rows() const { return 1; }
+    int _cols() const { return m_matrix.cols(); }
+    
+    Scalar& _coeffRef(int, int col)
+    {
+      return m_matrix.coeffRef(m_row, col);
+    }
+    
+    Scalar _coeff(int, int col) const
+    {
+      return m_matrix.coeff(m_row, col);
+    }
+    
+  protected:
+    MatRef m_matrix;
+    const int m_row;
+};
+
+/** \returns an expression of the \a i-th row of *this. Note that the numbering starts at 0.
+  *
+  * Example: \include MatrixBase_row.cpp
+  * Output: \verbinclude MatrixBase_row.out
+  *
+  * \sa col(), class Row */
+template<typename Scalar, typename Derived>
+Row<Derived>
+MatrixBase<Scalar, Derived>::row(int i)
+{
+  return Row<Derived>(ref(), i);
+}
+
+/** This is the const version of row(). */
+template<typename Scalar, typename Derived>
+const Row<Derived>
+MatrixBase<Scalar, Derived>::row(int i) const
+{
+  return Row<Derived>(ref(), i);
+}
+
+#endif // EIGEN_ROW_H
diff --git a/Eigen/src/Core/ScalarMultiple.h b/Eigen/src/Core/ScalarMultiple.h
new file mode 100644
index 000000000..bcaabb383
--- /dev/null
+++ b/Eigen/src/Core/ScalarMultiple.h
@@ -0,0 +1,114 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_SCALARMULTIPLE_H
+#define EIGEN_SCALARMULTIPLE_H
+
+template<typename FactorType, typename MatrixType> class ScalarMultiple : NoOperatorEquals,
+  public MatrixBase<typename MatrixType::Scalar, ScalarMultiple<FactorType, MatrixType> >
+{
+  public:
+    typedef typename MatrixType::Scalar Scalar;
+    typedef typename MatrixType::Ref MatRef;
+    friend class MatrixBase<Scalar, ScalarMultiple<FactorType, MatrixType> >;
+
+    ScalarMultiple(const MatRef& matrix, FactorType factor)
+      : m_matrix(matrix), m_factor(factor) {}
+
+    ScalarMultiple(const ScalarMultiple& other)
+      : m_matrix(other.m_matrix), m_factor(other.m_factor) {}
+
+  private:
+    static const int _RowsAtCompileTime = MatrixType::RowsAtCompileTime,
+                     _ColsAtCompileTime = MatrixType::ColsAtCompileTime;
+
+    const ScalarMultiple& _ref() const { return *this; }
+    int _rows() const { return m_matrix.rows(); }
+    int _cols() const { return m_matrix.cols(); }
+
+    Scalar _coeff(int row, int col) const
+    {
+      return m_factor * m_matrix.coeff(row, col);
+    }
+
+  protected:
+    const MatRef m_matrix;
+    const FactorType m_factor;
+};
+
+#define EIGEN_MAKE_SCALAR_OPS(FactorType)                              \
+/** \relates MatrixBase */                                             \
+template<typename Scalar, typename Derived>                            \
+const ScalarMultiple<FactorType, Derived>                              \
+operator*(const MatrixBase<Scalar, Derived>& matrix,                   \
+          FactorType scalar)                                           \
+{                                                                      \
+  return ScalarMultiple<FactorType, Derived>(matrix.ref(), scalar);    \
+}                                                                      \
+                                                                       \
+/** \relates MatrixBase */                                             \
+template<typename Scalar, typename Derived>                            \
+const ScalarMultiple<FactorType, Derived>                              \
+operator*(FactorType scalar,                                           \
+          const MatrixBase<Scalar, Derived>& matrix)                   \
+{                                                                      \
+  return ScalarMultiple<FactorType, Derived>(matrix.ref(), scalar);    \
+}                                                                      \
+                                                                       \
+/** \relates MatrixBase */                                             \
+template<typename Scalar, typename Derived>                            \
+const ScalarMultiple<typename NumTraits<FactorType>::FloatingPoint, Derived> \
+operator/(const MatrixBase<Scalar, Derived>& matrix,                   \
+          FactorType scalar)                                           \
+{                                                                      \
+  assert(NumTraits<Scalar>::HasFloatingPoint);                         \
+  return matrix * (static_cast<                                        \
+                     typename NumTraits<FactorType>::FloatingPoint     \
+                   >(1) / scalar);                                     \
+}                                                                      \
+                                                                       \
+template<typename Scalar, typename Derived>                            \
+Derived &                                                              \
+MatrixBase<Scalar, Derived>::operator*=(const FactorType &other)       \
+{                                                                      \
+  return *this = *this * other;                                        \
+}                                                                      \
+                                                                       \
+template<typename Scalar, typename Derived>                            \
+Derived &                                                              \
+MatrixBase<Scalar, Derived>::operator/=(const FactorType &other)       \
+{                                                                      \
+  return *this = *this / other;                                        \
+}
+
+EIGEN_MAKE_SCALAR_OPS(int)
+EIGEN_MAKE_SCALAR_OPS(float)
+EIGEN_MAKE_SCALAR_OPS(double)
+EIGEN_MAKE_SCALAR_OPS(std::complex<float>)
+EIGEN_MAKE_SCALAR_OPS(std::complex<double>)
+
+#undef EIGEN_MAKE_SCALAR_OPS
+
+#endif // EIGEN_SCALARMULTIPLE_H
diff --git a/Eigen/src/Core/Sum.h b/Eigen/src/Core/Sum.h
new file mode 100644
index 000000000..6385ced2c
--- /dev/null
+++ b/Eigen/src/Core/Sum.h
@@ -0,0 +1,80 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_SUM_H
+#define EIGEN_SUM_H
+
+template<typename Lhs, typename Rhs> class Sum : NoOperatorEquals,
+    public MatrixBase<typename Lhs::Scalar, Sum<Lhs, Rhs> >
+{
+  public:
+    typedef typename Lhs::Scalar Scalar;
+    typedef typename Lhs::Ref LhsRef;
+    typedef typename Rhs::Ref RhsRef;
+    friend class MatrixBase<Scalar, Sum>;
+    
+    Sum(const LhsRef& lhs, const RhsRef& rhs)
+      : m_lhs(lhs), m_rhs(rhs)
+    {
+      assert(lhs.rows() == rhs.rows() && lhs.cols() == rhs.cols());
+    }
+
+    Sum(const Sum& other) : m_lhs(other.m_lhs), m_rhs(other.m_rhs) {}
+
+  private:
+    static const int _RowsAtCompileTime = Lhs::RowsAtCompileTime,
+                     _ColsAtCompileTime = Rhs::ColsAtCompileTime;
+
+    const Sum& _ref() const { return *this; }
+    int _rows() const { return m_lhs.rows(); }
+    int _cols() const { return m_lhs.cols(); }
+
+    Scalar _coeff(int row, int col) const
+    {
+      return m_lhs.coeff(row, col) + m_rhs.coeff(row, col);
+    }
+    
+  protected:
+    const LhsRef m_lhs;
+    const RhsRef m_rhs;
+};
+
+/** \relates MatrixBase */
+template<typename Scalar, typename Derived1, typename Derived2>
+const Sum<Derived1, Derived2>
+operator+(const MatrixBase<Scalar, Derived1> &mat1, const MatrixBase<Scalar, Derived2> &mat2)
+{
+  return Sum<Derived1, Derived2>(mat1.ref(), mat2.ref());
+}
+
+template<typename Scalar, typename Derived>
+template<typename OtherDerived>
+Derived &
+MatrixBase<Scalar, Derived>::operator+=(const MatrixBase<Scalar, OtherDerived>& other)
+{
+  return *this = *this + other;
+}
+
+#endif // EIGEN_SUM_H
diff --git a/Eigen/src/Core/Trace.h b/Eigen/src/Core/Trace.h
new file mode 100644
index 000000000..cfe7c7937
--- /dev/null
+++ b/Eigen/src/Core/Trace.h
@@ -0,0 +1,77 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_TRACE_H
+#define EIGEN_TRACE_H
+
+template<int Index, int Rows, typename Derived> struct TraceUnroller
+{
+  static void run(const Derived &mat, typename Derived::Scalar &trace)
+  {
+    TraceUnroller<Index-1, Rows, Derived>::run(mat, trace);
+    trace += mat.coeff(Index, Index);
+  }
+};
+
+template<int Rows, typename Derived> struct TraceUnroller<0, Rows, Derived>
+{
+  static void run(const Derived &mat, typename Derived::Scalar &trace)
+  {
+    trace = mat.coeff(0, 0);
+  }
+};
+
+template<int Index, typename Derived> struct TraceUnroller<Index, Dynamic, Derived>
+{
+  static void run(const Derived&, typename Derived::Scalar&) {}
+};
+
+// prevent buggy user code from causing an infinite recursion
+template<int Index, typename Derived> struct TraceUnroller<Index, 0, Derived>
+{
+  static void run(const Derived&, typename Derived::Scalar&) {}
+};
+
+/** \returns the trace of *this, which must be a square matrix.
+  *
+  * \sa diagonal() */
+template<typename Scalar, typename Derived>
+Scalar MatrixBase<Scalar, Derived>::trace() const
+{
+  assert(rows() == cols());
+  Scalar res;
+  if(EIGEN_UNROLLED_LOOPS && RowsAtCompileTime != Dynamic && RowsAtCompileTime <= 16)
+    TraceUnroller<RowsAtCompileTime-1, RowsAtCompileTime, Derived>
+      ::run(*static_cast<const Derived*>(this), res);
+  else
+  {
+    res = coeff(0, 0);
+    for(int i = 1; i < rows(); i++)
+      res += coeff(i, i);
+  }
+  return res;
+}
+
+#endif // EIGEN_TRACE_H
diff --git a/Eigen/src/Core/Transpose.h b/Eigen/src/Core/Transpose.h
new file mode 100644
index 000000000..fb79ea3cd
--- /dev/null
+++ b/Eigen/src/Core/Transpose.h
@@ -0,0 +1,99 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_TRANSPOSE_H
+#define EIGEN_TRANSPOSE_H
+
+/** \class Transpose
+  *
+  * \brief Expression of the transpose of a matrix
+  *
+  * \param MatrixType the type of the object of which we are taking the transpose
+  *
+  * This class represents an expression of the transpose of a matrix.
+  * It is the return type of MatrixBase::transpose() and MatrixBase::adjoint()
+  * and most of the time this is the only way it is used.
+  *
+  * \sa MatrixBase::transpose(), MatrixBase::adjoint()
+  */
+template<typename MatrixType> class Transpose
+  : public MatrixBase<typename MatrixType::Scalar, Transpose<MatrixType> >
+{
+  public:
+    typedef typename MatrixType::Scalar Scalar;
+    typedef typename MatrixType::Ref MatRef;
+    friend class MatrixBase<Scalar, Transpose<MatrixType> >;
+    
+    Transpose(const MatRef& matrix) : m_matrix(matrix) {}
+    
+    Transpose(const Transpose& other)
+      : m_matrix(other.m_matrix) {}
+    
+    EIGEN_INHERIT_ASSIGNMENT_OPERATORS(Transpose)
+    
+  private:
+    static const int _RowsAtCompileTime = MatrixType::ColsAtCompileTime,
+                     _ColsAtCompileTime = MatrixType::RowsAtCompileTime;
+
+    const Transpose& _ref() const { return *this; }
+    int _rows() const { return m_matrix.cols(); }
+    int _cols() const { return m_matrix.rows(); }
+    
+    Scalar& _coeffRef(int row, int col)
+    {
+      return m_matrix.coeffRef(col, row);
+    }
+    
+    Scalar _coeff(int row, int col) const
+    {
+      return m_matrix.coeff(col, row);
+    }
+    
+  protected:
+    MatRef m_matrix;
+};
+
+/** \returns an expression of the transpose of *this.
+  *
+  * Example: \include MatrixBase_transpose.cpp
+  * Output: \verbinclude MatrixBase_transpose.out
+  *
+  * \sa adjoint(), class DiagonalCoeffs */
+template<typename Scalar, typename Derived>
+Transpose<Derived>
+MatrixBase<Scalar, Derived>::transpose()
+{
+  return Transpose<Derived>(ref());
+}
+
+/** This is the const version of transpose(). \sa adjoint() */
+template<typename Scalar, typename Derived>
+const Transpose<Derived>
+MatrixBase<Scalar, Derived>::transpose() const
+{
+  return Transpose<Derived>(ref());
+}
+
+#endif // EIGEN_TRANSPOSE_H
diff --git a/Eigen/src/Core/Util.h b/Eigen/src/Core/Util.h
new file mode 100644
index 000000000..a38feaf9a
--- /dev/null
+++ b/Eigen/src/Core/Util.h
@@ -0,0 +1,141 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_UTIL_H
+#define EIGEN_UTIL_H
+
+#ifdef EIGEN_DONT_USE_UNROLLED_LOOPS
+#define EIGEN_UNROLLED_LOOPS (false)
+#else
+#define EIGEN_UNROLLED_LOOPS (true)
+#endif
+
+#ifndef EIGEN_DEFAULT_MATRIX_STORAGE_ORDER
+#define EIGEN_DEFAULT_MATRIX_STORAGE_ORDER ColumnDominant
+#endif
+
+#undef minor
+
+#define USING_PART_OF_NAMESPACE_EIGEN \
+EIGEN_USING_MATRIX_TYPEDEFS \
+using Eigen::Matrix; \
+using Eigen::MatrixBase;
+
+#ifdef EIGEN_INTERNAL_DEBUGGING
+#define eigen_internal_assert(x) assert(x);
+#else
+#define eigen_internal_assert(x)
+#endif
+
+#ifdef NDEBUG
+#define EIGEN_ONLY_USED_FOR_DEBUG(x) (void)x
+#else
+#define EIGEN_ONLY_USED_FOR_DEBUG(x)
+#endif
+
+#ifdef __GNUC__
+# define EIGEN_ALWAYS_INLINE __attribute__((always_inline))
+#else
+# define EIGEN_ALWAYS_INLINE
+#endif
+
+#define EIGEN_INHERIT_ASSIGNMENT_OPERATOR(Derived, Op) \
+template<typename OtherScalar, typename OtherDerived> \
+Derived& operator Op(const MatrixBase<OtherScalar, OtherDerived>& other) \
+{ \
+  return MatrixBase<Scalar, Derived>::operator Op(other); \
+} \
+Derived& operator Op(const Derived& other) \
+{ \
+  return MatrixBase<Scalar, Derived>::operator Op(other); \
+}
+
+#define EIGEN_INHERIT_SCALAR_ASSIGNMENT_OPERATOR(Derived, Op) \
+template<typename Other> \
+Derived& operator Op(const Other& scalar) \
+{ \
+  return MatrixBase<Scalar, Derived>::operator Op(scalar); \
+}
+
+#define EIGEN_INHERIT_ASSIGNMENT_OPERATORS(Derived) \
+EIGEN_INHERIT_ASSIGNMENT_OPERATOR(Derived, =) \
+EIGEN_INHERIT_ASSIGNMENT_OPERATOR(Derived, +=) \
+EIGEN_INHERIT_ASSIGNMENT_OPERATOR(Derived, -=) \
+EIGEN_INHERIT_SCALAR_ASSIGNMENT_OPERATOR(Derived, *=) \
+EIGEN_INHERIT_SCALAR_ASSIGNMENT_OPERATOR(Derived, /=)
+
+const int Dynamic = -1;
+
+enum MatrixStorageOrder
+{
+  ColumnDominant,
+  RowDominant
+};
+
+//forward declarations
+template<typename _Scalar, int _Rows, int _Cols, MatrixStorageOrder _StorageOrder>
+  class Matrix;
+template<typename MatrixType> class MatrixRef;
+template<typename NewScalar, typename MatrixType> class Cast;
+template<typename MatrixType> class Row;
+template<typename MatrixType> class Column;
+template<typename MatrixType> class Minor;
+template<typename MatrixType> class DynBlock;
+template<typename MatrixType, int BlockRows, int BlockCols> class Block;
+template<typename MatrixType> class Transpose;
+template<typename MatrixType> class Conjugate;
+template<typename MatrixType> class Opposite;
+template<typename Lhs, typename Rhs> class Sum;
+template<typename Lhs, typename Rhs> class Difference;
+template<typename Lhs, typename Rhs> class Product;
+template<typename FactorType, typename MatrixType> class ScalarMultiple;
+template<typename MatrixType> class Random;
+template<typename MatrixType> class Zero;
+template<typename MatrixType> class Ones;
+template<typename MatrixType, typename CoeffsVectorType> class DiagonalMatrix;
+template<typename MatrixType> class DiagonalCoeffs;
+template<typename MatrixType> class Identity;
+template<typename ExpressionType> class Eval;
+template<typename MatrixType> class Map;
+
+template<typename T> struct ForwardDecl
+{
+  typedef T Ref;
+};
+
+template<typename _Scalar, int _Rows, int _Cols, MatrixStorageOrder _StorageOrder>
+struct ForwardDecl<Matrix<_Scalar, _Rows, _Cols, _StorageOrder> >
+{
+  typedef MatrixRef<Matrix<_Scalar, _Rows, _Cols, _StorageOrder> > Ref;
+};
+
+//classes inheriting NoOperatorEquals don't generate a default operator=.
+class NoOperatorEquals
+{
+  private:
+    NoOperatorEquals& operator=(const NoOperatorEquals&);
+};
+
+#endif // EIGEN_UTIL_H
diff --git a/Eigen/src/Core/Zero.h b/Eigen/src/Core/Zero.h
new file mode 100644
index 000000000..2d3ec264e
--- /dev/null
+++ b/Eigen/src/Core/Zero.h
@@ -0,0 +1,78 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EIGEN_ZERO_H
+#define EIGEN_ZERO_H
+
+template<typename MatrixType> class Zero : NoOperatorEquals,
+  public MatrixBase<typename MatrixType::Scalar, Zero<MatrixType> >
+{
+  public:
+    typedef typename MatrixType::Scalar Scalar;
+    friend class MatrixBase<Scalar, Zero<MatrixType> >;
+    
+    Zero(int rows, int cols) : m_rows(rows), m_cols(cols)
+    {
+      assert(rows > 0 && cols > 0);
+    }
+    
+  private:
+    static const int _RowsAtCompileTime = MatrixType::RowsAtCompileTime,
+                     _ColsAtCompileTime = MatrixType::ColsAtCompileTime;
+
+    const Zero& _ref() const { return *this; }
+    int _rows() const { return m_rows; }
+    int _cols() const { return m_cols; }
+    
+    Scalar _coeff(int, int) const
+    {
+      return static_cast<Scalar>(0);
+    }
+    
+  protected:
+    int m_rows, m_cols;
+};
+
+template<typename Scalar, typename Derived>
+const Zero<Derived> MatrixBase<Scalar, Derived>::zero(int rows, int cols)
+{
+  return Zero<Derived>(rows, cols);
+}
+
+template<typename Scalar, typename Derived>
+const Zero<Derived> MatrixBase<Scalar, Derived>::zero(int size)
+{
+  assert(IsVectorAtCompileTime);
+  if(RowsAtCompileTime == 1) return Zero<Derived>(1, size);
+  else return Zero<Derived>(size, 1);
+}
+
+template<typename Scalar, typename Derived>
+const Zero<Derived> MatrixBase<Scalar, Derived>::zero()
+{
+  return Zero<Derived>(RowsAtCompileTime, ColsAtCompileTime);
+}
+
+#endif // EIGEN_ZERO_H