> They are just identifiers and I don't think they are computed with. > However, I don't intend to change formalization beyond a global > implementation of int by some fixed size integers, if that can be done > easily. Otherwise we live with the increase in runtime from 7:20 to 8:20.
Hence a suitable theory would follow Code_Numeral and provide code_printing declarations to map integer to a fixed-width overflow-guarding implementation. But I am also not sure whether this is worth the effort. Cheers, Florian -- PGP available: http://isabelle.in.tum.de/~haftmann/pgp/florian_haftmann_at_informatik_tu_muenchen_de
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