reorganize header files, split MatrixBase into smaller files.

expose only a few meta-headers to the user, the rest moves to a internal/ subdirectory
2026-04-10 11:34:33 +08:00 · 2007-09-09 09:41:15 +00:00
parent 3b727ef939
commit 1af61c6ff0
22 changed files with 294 additions and 153 deletions
--- a/src/internal/Minor.h
+++ b/src/internal/Minor.h
@@ -0,0 +1,95 @@
+// 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
+
+namespace Eigen {
+
+template<typename MatrixType> class MatrixMinor
+{
+  public:
+    typedef typename MatrixType::Scalar Scalar;
+
+    MatrixMinor(const MatrixType& matrix, int row, int col = 0)
+      : m_matrix(matrix), m_row(row), m_col(col)
+    {
+      EIGEN_CHECK_RANGES(matrix, row, col);
+    }
+    
+    MatrixMinor(const MatrixMinor& other)
+      : m_matrix(other.m_matrix), m_row(other.m_row), m_col(other.m_col) {}
+    
+    int rows() const { return m_matrix.rows() - 1; }
+    int cols() const { return m_matrix.cols() - 1; }
+    
+    Scalar& write(int row, int col=0)
+    {
+      return m_matrix.write(row + (row >= m_row), col + (col >= m_col));
+    }
+    
+    Scalar read(int row, int col=0) const
+    {
+      return m_matrix.read(row + (row >= m_row), col + (col >= m_col));
+    }
+    
+  protected:
+    MatrixType m_matrix;
+    const int m_row, m_col;
+};
+
+template<typename Derived>
+MatrixXpr<
+  MatrixMinor<
+    MatrixRef<
+      MatrixBase<Derived>
+    >
+  >
+>
+MatrixBase<Derived>::minor(int row, int col)
+{
+  typedef MatrixMinor<Ref> ProductType;
+  typedef MatrixXpr<ProductType> XprType;
+  return XprType(ProductType(ref(), row, col));
+}
+
+template<typename Content>
+MatrixXpr<
+  MatrixMinor<
+    MatrixXpr<Content>
+  >
+>
+MatrixXpr<Content>::minor(int row, int col)
+{
+  typedef MatrixMinor<
+            MatrixXpr<Content>
+          > ProductType;
+  typedef MatrixXpr<ProductType> XprType;
+  return XprType(ProductType(*this, row, col));
+}
+
+}
+
+#endif // EIGEN_MINOR_H