From 2a5bb51db3e73802064c0a55e9ef21943df2fff0 Mon Sep 17 00:00:00 2001
From: Alexander Schmidt <alex@treefish.org>
Date: Fri, 15 Nov 2013 13:52:49 +0100
Subject: [PATCH] Made the sweep a checkerboard sweep.

---
 sim-r.hpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/sim-r.hpp b/sim-r.hpp
index e908626..ae6adc4 100644
--- a/sim-r.hpp
+++ b/sim-r.hpp
@@ -55,8 +55,10 @@ void sim::updatePhi (const int& x)
 }
 
 void sim::_makeSweep() {  
-  for (int ix=0; ix<LSIZE2; ix++)
-    updatePhi(ix);
+  for (int ichecker=0; ichecker<2; ichecker++)
+    for (int it=0; it<O815->comargs.lsize[0]; it++)
+      for (int iy=(it+ichecker)%2; iy<O815->comargs.lsize[1]; iy+=2)
+	updatePhi( it*O815->comargs.lsize[1] + iy );
 }
 
 void sim::_newParas() {
-- 
2.39.5