From 190ec53a633493dff3724608fcc68ef3801b5876 Mon Sep 17 00:00:00 2001
From: Frank Dellaert <dellaert@gmail.com>
Date: Sun, 21 Feb 2010 15:23:27 +0000
Subject: [PATCH] use ifdef

---
 cpp/ISAM-inl.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/cpp/ISAM-inl.h b/cpp/ISAM-inl.h
index 1bffa20cc..45fb70452 100644
--- a/cpp/ISAM-inl.h
+++ b/cpp/ISAM-inl.h
@@ -40,13 +40,13 @@ namespace gtsam {
 
 		// create an ordering for the new and contaminated factors
 		Ordering ordering;
-		if (true) {
+#ifndef SORT_KEYS
 			ordering = factors.getOrdering();
-		} else {
+#else
 			list<Symbol> keys = factors.keys();
 			keys.sort(); // todo: correct sorting order?
 			ordering = keys;
-		}
+#endif
 
 		// Create Index from ordering
 		IndexTable<Symbol> index(ordering);