From b82524882c58d44fcfdc285c5b01cf049b4cd569 Mon Sep 17 00:00:00 2001
From: Richard Roberts <richard.jw.roberts@gmail.com>
Date: Wed, 30 Apr 2014 18:21:00 -0700
Subject: [PATCH] Fix typo in conditional in SymmetricBlockMatrix, fixes #75

---
 gtsam/base/SymmetricBlockMatrix.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gtsam/base/SymmetricBlockMatrix.cpp b/gtsam/base/SymmetricBlockMatrix.cpp
index d95fe84b7..546b6a7f1 100644
--- a/gtsam/base/SymmetricBlockMatrix.cpp
+++ b/gtsam/base/SymmetricBlockMatrix.cpp
@@ -53,7 +53,7 @@ SymmetricBlockMatrix SymmetricBlockMatrix::LikeActiveViewOf(
 VerticalBlockMatrix SymmetricBlockMatrix::choleskyPartial(
     DenseIndex nFrontals) {
   // Do dense elimination
-  if (!blockStart() == 0)
+  if (blockStart() != 0)
     throw std::invalid_argument(
         "Can only do Cholesky when the SymmetricBlockMatrix is not a restricted view, i.e. when blockStart == 0.");
   if (!gtsam::choleskyPartial(matrix_, offset(nFrontals)))