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| Numeric and Promote Traits of Rational |
--- | --- | ---

The numeric and promote traits for Rational follow the general specifications for Numeric and Promotion Traits and AlgebraicField. They are implemented in terms of the traits of the basic types by partial template specialization:

        template <class T>
        struct NumericTraits<Rational<T> >
        {
            typedef Rational<typename NumericTraits<T>::Promote> Promote;
            typedef Rational<typename NumericTraits<T>::RealPromote> RealPromote;

            typedef typename NumericTraits<T>::isIntegral isIntegral;
            typedef VigraTrueType isScalar;
            typedef VigraTrueType isOrdered;

            // etc.
        };

        template <class T1, class T2>
        struct PromoteTraits<Rational<T1>, Rational<T2> >
        {
            typedef Rational<typename PromoteTraits<T1, T2>::Promote> Promote;
        };

#include "vigra/rational.hxx"
Namespace: vigra

© Ullrich Köthe (koethe@informatik.uni-hamburg.de) Cognitive Systems Group, University of Hamburg, Germany | html generated using doxygen and Python VIGRA 1.3.2 (27 Jan 2005)