From 302cf8ffe275df66fc615b694249a2f36c2605b2 Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Tue, 9 Jun 2015 11:40:07 +0200
Subject: [PATCH] Add missing documentation for
 TriangularViewImpl<MatrixType,Mode,Sparse>

---
 Eigen/src/SparseCore/SparseTriangularView.h | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/Eigen/src/SparseCore/SparseTriangularView.h b/Eigen/src/SparseCore/SparseTriangularView.h
index 7695f299e..0e6c01531 100644
--- a/Eigen/src/SparseCore/SparseTriangularView.h
+++ b/Eigen/src/SparseCore/SparseTriangularView.h
@@ -11,11 +11,17 @@
 #ifndef EIGEN_SPARSE_TRIANGULARVIEW_H
 #define EIGEN_SPARSE_TRIANGULARVIEW_H
 
-#ifndef EIGEN_PARSED_BY_DOXYGEN
-// Doxygen gets confused with template specialization:
-// https://bugzilla.gnome.org/show_bug.cgi?id=406027
 namespace Eigen {
 
+/** \ingroup SparseCore_Module
+  *
+  * \brief Base class for a triangular part in a \b sparse matrix
+  *
+  * This class is an abstract base class of class TriangularView, and objects of type TriangularViewImpl cannot be instantiated.
+  * It extends class TriangularView with additional methods which are available for sparse expressions only.
+  *
+  * \sa class TriangularView, SparseMatrixBase::triangularView()
+  */
 template<typename MatrixType, unsigned int Mode> class TriangularViewImpl<MatrixType,Mode,Sparse>
   : public SparseMatrixBase<TriangularView<MatrixType,Mode> >
 {
@@ -278,6 +284,4 @@ SparseMatrixBase<Derived>::triangularView() const
 
 } // end namespace Eigen
 
-#endif // not EIGEN_PARSED_BY_DOXYGEN
-
 #endif // EIGEN_SPARSE_TRIANGULARVIEW_H