//cdouble to value conversion test
	Value v = RichToValue(y);
	v = y;

	//Value to cdouble conversion test	
//	x = v; //ambiguity in std::complex::operator=
	x = v.operator cdouble(); //needs explicit call
#if flagMSC
	//works for MSC, GCC has constructor amiguity
	x = cdouble(v);
	x = (cdouble)v;
#endif

//	x = Null; //ambiguity in std::complex::operator=
	x = Null.operator cdouble(); //needs explicit call
#if flagMSC
	//works for MSC, GCC has constructor amiguity
	x = cdouble(Null);
	x = (cdouble)Null;
#endif

+NTL_MOVEABLE(cdouble);