From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,c42dbf68f5320193 X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 2002-05-05 16:12:12 PST Path: archiver1.google.com!news1.google.com!newsfeed.stanford.edu!newsfeeds.belnet.be!news.belnet.be!news.tele.dk!small.news.tele.dk!207.115.63.138!newscon04.news.prodigy.com!newsmst01.news.prodigy.com!prodigy.com!postmaster.news.prodigy.com!newssvr21.news.prodigy.com.POSTED!3bae8248!not-for-mail From: tmoran@acm.org Newsgroups: comp.lang.ada Subject: Re: Generation of permutations References: <5ee5b646.0205041652.63032ba6@posting.google.com> X-Newsreader: Tom's custom newsreader Message-ID: NNTP-Posting-Host: 67.115.104.191 X-Complaints-To: abuse@prodigy.net X-Trace: newssvr21.news.prodigy.com 1020640277 ST000 67.115.104.191 (Sun, 05 May 2002 19:11:17 EDT) NNTP-Posting-Date: Sun, 05 May 2002 19:11:17 EDT Organization: Prodigy Internet http://www.prodigy.com X-UserInfo1: Q[R_PJSCO@SIRQ@[ORHD]_\@VR]^@B@MCPWZKB]MPXHTEPIB_NVUAH_[BL[\IRKIANGGJBFNJF_DOLSCENSY^U@FRFUEXR@KFXYDBPWBCDQJA@X_DCBHXR[C@\EOKCJLED_SZ@RMWYXYWE_P@\\GOIW^@SYFFSWHFIXMADO@^[ADPRPETLBJ]RDGENSKQQZN Date: Sun, 05 May 2002 23:11:17 GMT Xref: archiver1.google.com comp.lang.ada:23566 Date: 2002-05-05T23:11:17+00:00 List-Id: > but to determine whether a set of instructions constitutes a general > sorting algorithm is obviously recursively undecidable. So the set of instructions emitted by Gnat when it compiles bubble sort code may or may not constitute a general sorting algorithm, and whether it does or not is undecidable? I learn something new every day.