From 32596c5e9e335cf6b994e72cbe06c8561b360ef1 Mon Sep 17 00:00:00 2001
From: Benoit Jacob <jacob.benoit.1@gmail.com>
Date: Mon, 23 Jun 2008 11:03:27 +0000
Subject: add benchmark for sum

---
 bench/bench_sum.cpp | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 bench/bench_sum.cpp

(limited to 'bench/bench_sum.cpp')

diff --git a/bench/bench_sum.cpp b/bench/bench_sum.cpp
new file mode 100644
index 000000000..82bae80c3
--- /dev/null
+++ b/bench/bench_sum.cpp
@@ -0,0 +1,17 @@
+#include <Eigen/Core>
+USING_PART_OF_NAMESPACE_EIGEN
+using namespace std;
+
+int main() 
+{
+  typedef Matrix<SCALAR,Eigen::Dynamic,1> Vec;
+  Vec v(SIZE);
+  v.setZero();
+  v[0] = 1;
+  v[1] = 2;
+  for(int i = 0; i < 1000000; i++)
+  {
+    v.coeffRef(0) += v.sum() * SCALAR(1e-20);
+  }
+  cout << v.sum() << endl;
+}
-- 
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