an intermediate commit to keep updates

src/doHyperVolume.h

@@ -0,0 +1,25 @@
+#ifndef _doHyperVolume_h
+#define _doHyperVolume_h
+
+template < typename EOT >
+class doHyperVolume
+{
+public:
+    typedef typename EOT::AtomType AtomType;
+
+    doHyperVolume() : _hv(1) {}
+
+    void update(AtomType v)
+    {
+	_hv *= ::sqrt( v );
+
+	assert( _hv <= std::numeric_limits< AtomType >::max() );
+    }
+
+    AtomType get_hypervolume() const { return _hv; }
+
+protected:
+    AtomType _hv;
+};
+
+#endif // !_doHyperVolume_h