MyMat operator()()	{
			MyMat res(sz,sz);
			do gen.drawUniformMatrix(res,-10.0,10.0); while (res.isSingular(1e-4));
			return res;
		}
		inline CMatrixTemplateNumeric<T> operator()()	{
			do gen.drawUniformMatrix(tmp,T(-3.0),T(3.0)); while (tmp.isSingular(eps));
			res.multiply_AAt(tmp);
			return res;
		}