Svd: No fallback as it would require matrix copy

		        &(iwork[0]),

		        &info);

		if (info != 0) {

			if (info < 0)

				throw RuntimeError(String(__FILE__) + ": " + ttos(__LINE__) +

			                       " info= " + ttos(info));

			if (canTryAgain()) {

				std::cerr<<__FILE__<<": "<<__LINE__<<" info= "<<"\n";

				std::cerr<<"Will try with fallback...\n";

				name_ = "gesvd";

				operator()(jobz, a, s, vt);

			}

			if (info > 0)

				std::cerr<<"WARNING "<<__FILE__<<": "<<__LINE__<<" info= "<<info<<"\n";

		}

		a = u;