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CGAL 6.0 - Algebraic Foundations
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Two types A and B are a model of the concept ImplicitInteroperable, if there is a superior type, such that binary arithmetic operations involving A and B result in this type. This type is CGAL::Coercion_traits<A,B>::Type. In case types are RealEmbeddable this also implies that mixed compare operators are available.
The type CGAL::Coercion_traits<A,B>::Type is required to be implicit constructible from A and B.
In this case CGAL::Coercion_traits<A,B>::Are_implicit_interoperable is CGAL::Tag_true.
ExplicitInteroperable