[Boost-users] [units] easier "power" of units generation

Hi, I have a custom units, for example, angstrom: typedef scaled_base_unit > > angstrom_base_unit; typedef metric::angstrom_base_unit::unit_type angstrom_unit; static const angstrom_unit angstrom; and I have a quantity quantity L=1.*angstrom; and I want to have a variable that has dimensions of volume and angstrom^3 units: ??? V = pow<3>(L); ¿how can I generate the type of V, given angstrom_unit? I found this complicated way: quantity::type

...

V = pow<3>(L);

Is there a more compact way or a way that doesn't explicitly mention angstrom_base_unit?, something like quantity::unit> V = pow<3>(L); // not working In other words, what are the metafunctions necessary to generate the typeof(pow<3>(L)) from angstrom_unit. Thank you, Alfredo