[Boost-users] [units] easier scaled units generation

scaled units are a great feature of boost.units, however it seems complicated to (explicitly) create variables in such units. This is the way I found to create a variable that stores a quantity like GigaPascals: using boost::units; typedef make_scaled_unit

...

::type gpa_unit; gpa_unit GPa; quantity p(1.*GPa); //or p(1.*si::giga*si::pascal);

the question is, is there a simpler way of doing this? for example, just quantitysi::pressure > p = ...; //values are converted/stored in giga pascals. I could add some "metafunction": template<class Unit> giga{ typedef make_scaled_unit >

::type unit; };

and use it like quantitysi::pressure::unit> p; and even specialize for femto, atto, mega, kile, etc. I this already implemented in some other way? In this way if I had implemented an electronvolt unit I could have megaelectronvolt for free quantity::unit> energy = ...; Thank you, Alfredo