/* in file1 */
template <typename T> class type_info
{
public:
	static T one() {
		return (T(0));
	}

	static T zero() {
		return (T(0));
	}
};

template <> class type_info<float>
{
public:
	static float one() {
		return 1.0f;
	}

	static float zero() {
		return 0.0f;
	}
};

/* gives error when using like: */

template <typename S>
// ...
   type_info<S>::one()

/* Error: "type_info: ambiguous symbol */