update

1 files changed, 39 insertions, 0 deletions

diff --git a/eigen/bench/benchmark.cpp b/eigen/bench/benchmark.cpp
new file mode 100644
index 0000000..c721b90
--- /dev/null
+++ b/eigen/bench/benchmark.cpp
@@ -0,0 +1,39 @@
+// g++ -O3 -DNDEBUG -DMATSIZE=<x> benchmark.cpp -o benchmark && time ./benchmark
+
+#include <iostream>
+
+#include <Eigen/Core>
+
+#ifndef MATSIZE
+#define MATSIZE 3
+#endif
+
+using namespace std;
+using namespace Eigen;
+
+#ifndef REPEAT
+#define REPEAT 40000000
+#endif
+
+#ifndef SCALAR
+#define SCALAR double
+#endif
+
+int main(int argc, char *argv[])
+{
+    Matrix<SCALAR,MATSIZE,MATSIZE> I = Matrix<SCALAR,MATSIZE,MATSIZE>::Ones();
+    Matrix<SCALAR,MATSIZE,MATSIZE> m;
+    for(int i = 0; i < MATSIZE; i++)
+        for(int j = 0; j < MATSIZE; j++)
+        {
+            m(i,j) = (i+MATSIZE*j);
+        }
+    asm("#begin");
+    for(int a = 0; a < REPEAT; a++)
+    {
+        m = Matrix<SCALAR,MATSIZE,MATSIZE>::Ones() + 0.00005 * (m + (m*m));
+    }
+    asm("#end");
+    cout << m << endl;
+    return 0;
+}