* Makefile.am: Add t-eoRNG

* t-eoRNG.cpp: Start test for random number generator.

eo/test/ChangeLog

@@ -1,3 +1,9 @@
+2006-12-04  Jochen Küpper  <jochen@fhi-berlin.mpg.de>
+
+	* Makefile.am: Add t-eoRNG
+
+	* t-eoRNG.cpp: Start test for random number generator.
+
 2006-12-02  Jochen Küpper  <jochen@fhi-berlin.mpg.de>
 
 	* t-MGE1bit.cpp: Change float to double.

eo/test/Makefile.am

@@ -38,7 +38,8 @@ check_PROGRAMS 			= t-eoParetoFitness \
 				t-eoFitnessAssembledEA \
 				t-eoRoulette \
 				t-eoSharing \
-				t-eoCMAES
+				t-eoCMAES \
+				t-eoRNG
 
 
 TESTS				= $(check_PROGRAMS) \
@@ -91,3 +92,4 @@ t_eoFitnessAssembled_SOURCES 	= t-eoFitnessAssembled.cpp
 t_eoRoulette_SOURCES 		= t-eoRoulette.cpp
 t_eoSharing_SOURCES 		= t-eoSharing.cpp
 t_eoCMAES_SOURCES		= t-eoCMAES.cpp
+t_eoRNG_SOURCES 		= t-eoRNG.cpp

eo/test/t-eoRNG.cpp

@@ -0,0 +1,53 @@
+//-----------------------------------------------------------------------------
+// t-rng.cpp
+//-----------------------------------------------------------------------------
+
+// This file really needs to be implementes usign some stringent tests, for now
+// we simply check that the impementation of some methods does generally work...
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <iostream>
+#include <eo>
+#include <utils/eoRNG.h>
+
+
+using namespace std;
+
+
+int main()
+{
+    const size_t num(10000);
+    double mean(100.);
+    double sigma(5.);
+    double sum(0.);
+    for(size_t i=0; i<num; ++i)
+        sum += abs(rng.normal(sigma));
+    sum /= double(num);
+    if(sum > sigma / 0.68) {
+        cerr << "Normal distribution seems out of bounds; "
+             << "rerun to make sure it wasn't a statistical outlier" << endl;
+        return -1;
+    }
+    sum = 0.;
+    for(size_t i=0; i<num; ++i)
+        sum += abs(rng.normal(mean, sigma) - mean);
+    sum /= double(num);
+    if(sum > sigma / 0.68) {
+        cerr << "Normal distribution seems out of bounds; "
+             << "rerun to make sure it wasn't a statistical outlier" << endl;
+        return -1;
+    }
+  return 0;
+}
+
+
+// Local Variables:
+// coding: iso-8859-1
+// mode: C++
+// c-file-offsets: ((c . 0))
+// c-file-style: "Stroustrup"
+// fill-column: 80
+// End: