...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
namespace boost{ namespace multiprecision{ template <class IntBackend> class rational_adpater; }}
The class template rational_adaptor
is a back-end for number
which converts any existing integer back-end into a rational-number back-end.
So for example, given an integer back-end type MyIntegerBackend
,
the use would be something like:
typedef number<MyIntegerBackend> MyInt; typedef number<rational_adaptor<MyIntegerBackend> > MyRational; MyRational r = 2; r /= 3; MyInt i = numerator(r); assert(i == 2);