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the benchmark program

2 files changed, 42 insertions, 0 deletions

diff --git a/doc/benchmark.cpp b/doc/benchmark.cpp
new file mode 100644
index 000000000..ae2a52e9c
--- /dev/null
+++ b/doc/benchmark.cpp
@@ -0,0 +1,23 @@
+// g++ -O3 -DNDEBUG benchmark.cpp -o benchmark && time ./benchmark
+
+#include "src/Core.h"
+
+using namespace std;
+USING_EIGEN_DATA_TYPES
+
+int main(int argc, char *argv[])
+{
+	Matrix3d I;
+	Matrix3d m;
+	for(int i = 0; i < 3; i++) for(int j = 0; j < 3; j++)
+	{
+		I(i,j) = (i==j);
+		m(i,j) = (i+3*j);
+	}
+	for(int a = 0; a < 100000000; a++)
+	{
+		m = I + 0.00005 * (m + m*m);
+	}
+	cout << m << endl;
+	return 0;
+}
diff --git a/doc/examples/function_dynBlock.cpp b/doc/examples/function_dynBlock.cpp
new file mode 100644
index 000000000..bd3cbae1f
--- /dev/null
+++ b/doc/examples/function_dynBlock.cpp
@@ -0,0 +1,19 @@
+#include "../src/Core.h"
+USING_EIGEN_DATA_TYPES
+using namespace std;
+int main(int, char**)
+{
+    Matrix4d m = Matrix4d::identity();
+    m.dynBlock(2,0,2,2) = m.dynBlock(0,0,2,2);
+    cout << m << endl;
+    return 0;
+}
+
+/* Output:
+
+1 0 0 0
+0 1 0 0
+1 0 1 0
+0 1 0 1
+
+*/