Stream: Mirror: Isabelle Development Mailing List

Topic: [isabelle-dev] Theories Code_*Int* in AFP entry Native_Word


view this post on Zulip Email Gateway (Feb 26 2022 at 19:37):

From: Florian Haftmann <florian.haftmann@informatik.tu-muenchen.de>
Hi Andreas,

after the substantial »disentangling« of bit operations and word types
in the last Isabelle release, I went through the theories in Native_Word
concerning code generation for int / integer to clarify the historically
grown theory names following the naming convention of theories
Code_*.thy from HOL-Library (hg id 700323b3c105).

The situation is still not 100% convincing since – despite the session
name – those theories refer to bit operations on int / integer, not
word, but I do not see an alternative which would be worth the effort,
e. g. moving to the distribution or separating into a dedicated AFP
entry Native_Bit or similar.

What could still be done is to eliminate some reminiscences e. g. to the
now discontinued ancient signed numeral representation, but this will
not be a game changer either.

But maybe you want to have a look at the current matter of affairs which
to your eyes might suggest improvements. No urgency.

Cheers,
Florian
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Last updated: Mar 04 2024 at 12:30 UTC