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Struct template subtract_typeof_helper<, , , , , >

boost::units::subtract_typeof_helper<quantity< unit< Dim, System >, X >, quantity< unit< Dim, System >, Y >>

Synopsis

// In header: <boost/units/quantity.hpp>

template<typename Dim, typename System, typename X, typename Y> 
struct subtract_typeof_helper<, , , , , > {
  // types
  typedef subtract_typeof_helper< X, Y >:: ;
  typedef unit< Dim, System >                  ; 
  typedef quantity< unit_type,     ;      
};

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