From e5d30fe5e29b7bd5a076c39bedd3bff0b2f9c766 Mon Sep 17 00:00:00 2001
From: Azusa Yamaguchi <ayamaguc@staffmail.ed.ac.uk>
Date: Wed, 10 Jun 2015 11:30:27 +0100
Subject: [PATCH] Fix compile

---
 tests/Test_GaugeAction.cc | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/tests/Test_GaugeAction.cc b/tests/Test_GaugeAction.cc
index bbfd8717..fc49cf2e 100644
--- a/tests/Test_GaugeAction.cc
+++ b/tests/Test_GaugeAction.cc
@@ -7,6 +7,26 @@ using namespace std;
 using namespace Grid;
 using namespace Grid::QCD;
 
+
+/* For Metropolis */
+class Metropolis {
+public:
+  GridSerialRNG & sRNG;
+  Metropolis(GridSerialRNG & _sRNG) : sRNG(_sRNG) {};
+  bool AcceptReject(const RealD Delta)
+  {
+    RealD rand;
+
+    if(Delta <=0.0) return true;
+
+    random(sRNG,rand);
+    if(rand <= exp(-Delta))
+      return true;
+    else 
+      return false;
+  }
+};
+
 int main (int argc, char ** argv)
 {
   Grid_init(&argc,&argv);