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Newsgroups: comp.lang.ada
Date: Sat, 15 Dec 2018 21:43:50 -0800 (PST)
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Subject: New to Spark, working an example
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Xref: reader01.eternal-september.org comp.lang.ada:55049
Date: 2018-12-15T21:43:50-08:00
List-Id: <comp.lang.ada>

Folks, new to this list, so not quite sure on etiquette.

I've been trying to understand Spark-2014 well enough to work through an ex=
ample, and understand the capabilities and workflow of the tools. The examp=
le I chose was an example of floor(lg(n)) for n positive.

Rather than put a long post here, I'll refer to my (long) post at stackover=
flow: https://stackoverflow.com/questions/53752715/proving-floor-log2-in-sp=
ark. (If this is bad etiquette here, let me know, and I'll fix -- but it do=
es seem a bit silly to duplicate the content in two locations.)

Since SO seems to have a very limited Ada/Spark community, I'm hoping someo=
ne here can point me in the right direction. Basically, trying to understan=
d what tools I should be trying to understand at this point. :-) Should I b=
e looking at proving this with just a better understanding of how to write =
loop invariants; through appropriate lemmas; through an external prover lik=
e Coq; or something else?

Thanks!