From 4d226ab5b546dad7ca394428af851e32b52a344d Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Sun, 6 Nov 2016 15:15:03 +0100
Subject: [PATCH] Enable swapping between SparseMatrix and SparseVector

---
 Eigen/src/SparseCore/SparseVector.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Eigen/src/SparseCore/SparseVector.h b/Eigen/src/SparseCore/SparseVector.h
index 00ee6ec89..7a3d88c38 100644
--- a/Eigen/src/SparseCore/SparseVector.h
+++ b/Eigen/src/SparseCore/SparseVector.h
@@ -290,6 +290,14 @@ class SparseVector
       m_data.swap(other.m_data);
     }
 
+    template<int OtherOptions>
+    inline void swap(SparseMatrix<Scalar,OtherOptions,StorageIndex>& other)
+    {
+      eigen_assert(other.outerSize()==1);
+      std::swap(m_size, other.m_innerSize);
+      m_data.swap(other.m_data);
+    }
+
     inline SparseVector& operator=(const SparseVector& other)
     {
       if (other.isRValue())