From b61facb08b1e6c49724f27e15d72b490c6c07d8f Mon Sep 17 00:00:00 2001
From: Christoph Hertzberg <chtz@informatik.uni-bremen.de>
Date: Wed, 16 Oct 2013 13:10:15 +0200
Subject: [PATCH] Use != instead of < to check for emptiness of iterator range
 (fixes bug #664)

---
 Eigen/src/SparseCore/SparseMatrix.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Eigen/src/SparseCore/SparseMatrix.h b/Eigen/src/SparseCore/SparseMatrix.h
index 4dad50562..f2e234eee 100644
--- a/Eigen/src/SparseCore/SparseMatrix.h
+++ b/Eigen/src/SparseCore/SparseMatrix.h
@@ -941,7 +941,7 @@ void set_from_triplets(const InputIterator& begin, const InputIterator& end, Spa
   typedef typename SparseMatrixType::Scalar Scalar;
   SparseMatrix<Scalar,IsRowMajor?ColMajor:RowMajor> trMat(mat.rows(),mat.cols());
 
-  if(begin<end)
+  if(begin!=end)
   {
     // pass 1: count the nnz per inner-vector
     VectorXi wi(trMat.outerSize());