From b72a686830b95afd8941d3c4020eb936628b6398 Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Fri, 2 Aug 2013 11:11:21 +0200
Subject: [PATCH] Fix bug #635: add isCompressed to MappedSparseMatrix for
 compatibility

---
 Eigen/src/SparseCore/MappedSparseMatrix.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Eigen/src/SparseCore/MappedSparseMatrix.h b/Eigen/src/SparseCore/MappedSparseMatrix.h
index 93cd4832d..ab1a266a9 100644
--- a/Eigen/src/SparseCore/MappedSparseMatrix.h
+++ b/Eigen/src/SparseCore/MappedSparseMatrix.h
@@ -50,6 +50,8 @@ class MappedSparseMatrix
     inline Index cols() const { return IsRowMajor ? m_innerSize : m_outerSize; }
     inline Index innerSize() const { return m_innerSize; }
     inline Index outerSize() const { return m_outerSize; }
+    
+    bool isCompressed() const { return true; }
 
     //----------------------------------------
     // direct access interface