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

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