Added MathSpeed.cs test.

Source/Examples/Tests/MathSpeed.cs

@@ -0,0 +1,68 @@
+#region --- License ---
+/* Copyright (c) 2006, 2007 Stefanos Apostolopoulos
+ * See license.txt for license info
+ */
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Diagnostics;
+using OpenTK.Math;
+
+namespace Examples.Tests
+{
+    [Example("Math speed test", ExampleCategory.Test, 2, false)]
+    public class MathSpeed
+    {
+        public static void Main()
+        {
+            Stopwatch watch = new Stopwatch();
+
+            Vector3 a = new Vector3(0.0f, 0.0f, 0.0f);
+            Vector3 b = new Vector3(1.0f, 1.0f, 1.0f);
+            Vector3 c = new Vector3(3.0f, 3.0f, 3.0f);
+            Vector3 d = new Vector3(4.0f, 4.0f, 4.0f);
+            Vector3 e = Vector3.Zero;
+            Vector3 res;
+
+            // Force the JIT to compile the functions.
+            Vector3.Add(a, b);
+            Vector3.Add(ref a, ref b, out res);
+            res = a + b;
+            res = Vector3.Zero;
+
+            watch.Reset();
+            watch.Start();
+            for (int i = 100000000; --i != 0; )
+                ;
+            watch.Stop();
+            Trace.WriteLine(String.Format("Noop\t\t\t\t\t\t{0}ns", (watch.Elapsed.TotalSeconds / 10.0).ToString()));
+
+            watch.Reset();
+            watch.Start();
+            for (int i = 100000000; --i != 0; )
+                res = Vector3.Add(res, a);
+            watch.Stop();
+            res += res;         // To make sure the whole for-loop isn't optimized-out
+            Trace.WriteLine(String.Format("res = Vector3.Add(a, b)\t\t\t{0}ns", (watch.Elapsed.TotalSeconds / 10.0).ToString()));
+            res = Vector3.Zero;
+
+            watch.Reset();
+            watch.Start();
+            for (int i = 100000000; --i != 0; )
+                res = res + a;
+            watch.Stop();
+            res += res;         // To make sure the whole for-loop isn't optimized-out
+            Trace.WriteLine(String.Format("res = a + b\t\t\t\t\t{0}ns", (watch.Elapsed.TotalSeconds / 10.0).ToString()));
+            
+            watch.Reset();
+            watch.Start();
+            for (int i = 100000000; --i != 0; )
+                Vector3.Add(ref res, ref a, out res);
+            watch.Stop();
+            res += res;         // To make sure the whole for-loop isn't optimized-out
+            Trace.WriteLine(String.Format("Vector3.Add(ref a, ref b, out res)\t{0}ns", (watch.Elapsed.TotalSeconds / 10.0).ToString()));
+        }
+    }
+}