Better speed test with indirect addressing.

applications/test/speed/vectorSpeedTest/vectorSpeedTest.C

@@ -0,0 +1,39 @@
+#include "primitiveFields.H"
+#include "cpuTime.H"
+#include "IOstreams.H"
+#include "OFstream.H"
+
+using namespace Foam;
+
+int main()
+{
+    const label nIter = 100;
+    const label size = 1000000;
+
+    Info<< "Initialising fields" << endl;
+
+    vectorField
+        vf1(size, vector::one),
+        vf2(size, vector::one),
+        vf3(size, vector::one),
+        vf4(size);
+
+    Info<< "Done\n" << endl;
+
+    {
+        cpuTime executionTime;
+
+        Info<< "vectorField algebra" << endl;
+
+        for (register int j=0; j<nIter; j++)
+        {
+            vf4 = vf1 + vf2 - vf3;
+        }
+
+        Info<< "ExecutionTime = "
+            << executionTime.elapsedCpuTime()
+            << " s\n" << endl;
+
+        Snull<< vf4[1] << endl << endl;
+    }
+}