From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.5-pre1 (2020-06-20) on ip-172-31-74-118.ec2.internal X-Spam-Level: X-Spam-Status: No, score=-1.9 required=3.0 tests=BAYES_00 autolearn=ham autolearn_force=no version=3.4.5-pre1 Path: eternal-september.org!reader02.eternal-september.org!aioe.org!pBWEO6hi52oGFheO/GY5ag.user.gioia.aioe.org.POSTED!not-for-mail From: Stephen Leake Newsgroups: comp.lang.ada Subject: Re: advent of code day 10 Date: Fri, 11 Dec 2020 09:04:27 -0800 Organization: Aioe.org NNTP Server Message-ID: <86r1nwp944.fsf@stephe-leake.org> References: <865z59c8p6.fsf@stephe-leake.org> NNTP-Posting-Host: pBWEO6hi52oGFheO/GY5ag.user.gioia.aioe.org Mime-Version: 1.0 Content-Type: text/plain X-Complaints-To: abuse@aioe.org User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (windows-nt) Cancel-Lock: sha1:9ZcTGTlDlZLaOpsRcfL9jbh6Uvc= X-Notice: Filtered by postfilter v. 0.9.2 Xref: reader02.eternal-september.org comp.lang.ada:60801 List-Id: Jared Summers writes: > On Thursday, December 10, 2020 at 8:39:36 PM UTC-7, Stephen Leake wrote: >> I cheated; the final total is larger than 64 bits, so I just printed out >> the factors and used Emacs built-in bignums to compute it. I assume >> there is an Ada bignums package out there, and the compiler has one that >> full Ada 2020 will expose, but I'm trying to catch up, so did not look. > > My answer was able to fit in a Long_Long_Integer on my machine. But, > due to a bug, I did play with the Big_Integers package. It worked > well, and I'd recommend taking a look at it for upcoming problems. Yes; GNAT Community 2020 with -gnat2020 and -gnatX supports Ada.Numerics.Big_Integer. I updated my solution to use that. -- -- Stephe