From 7b0c4102facc9b5f6ca99ef76febb05a9499b8b0 Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Fri, 16 Oct 2009 13:22:38 +0200
Subject: * add a Make* expression type builder to allow the   construction of
 generic expressions working   for both dense and sparse matrix. A nicer
 solution   would be to use CwiseBinaryOp for any kind of matrix.   To this
 end we either need to change the overall design   so that the base class(es)
 depends on the kind of matrix,   or we could add a template parameter to each
 expression   type (e.g., int Kind = ei_traits<MatrixType>::Kind)   allowing
 to specialize each expression for each kind of matrix. * Extend
 AutoDiffScalar to work with sparse vector expression   for the derivatives.

---
 Eigen/src/Sparse/SparseExpressionMaker.h | 48 ++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 Eigen/src/Sparse/SparseExpressionMaker.h

(limited to 'Eigen/src/Sparse')

diff --git a/Eigen/src/Sparse/SparseExpressionMaker.h b/Eigen/src/Sparse/SparseExpressionMaker.h
new file mode 100644
index 000000000..1fdcbb1f2
--- /dev/null
+++ b/Eigen/src/Sparse/SparseExpressionMaker.h
@@ -0,0 +1,48 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// Copyright (C) 2009 Gael Guennebaud <g.gael@free.fr>
+//
+// Eigen is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 3 of the License, or (at your option) any later version.
+//
+// Alternatively, 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 of
+// the License, 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 Lesser General Public License or the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License and a copy of the GNU General Public License along with
+// Eigen. If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef EIGEN_SPARSE_EXPRESSIONMAKER_H
+#define EIGEN_SPARSE_EXPRESSIONMAKER_H
+
+template<typename XprType>
+struct MakeNestByValue<XprType,IsSparse>
+{
+  typedef SparseNestByValue<XprType> Type;
+};
+
+template<typename Func, typename XprType>
+struct MakeCwiseUnaryOp<Func,XprType,IsSparse>
+{
+  typedef SparseCwiseUnaryOp<Func,XprType> Type;
+};
+
+template<typename Func, typename A, typename B>
+struct MakeCwiseBinaryOp<Func,A,B,IsSparse>
+{
+  typedef SparseCwiseBinaryOp<Func,A,B> Type;
+};
+
+// TODO complete the list
+
+#endif // EIGEN_SPARSE_EXPRESSIONMAKER_H
-- 
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