From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=5.0 tests=DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FROM,HTML_MESSAGE,MAILING_LIST_MULTI autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 11548 invoked from network); 2 Mar 2023 02:46:35 -0000 Received: from minnie.tuhs.org (50.116.15.146) by inbox.vuxu.org with ESMTPUTF8; 2 Mar 2023 02:46:35 -0000 Received: from minnie.tuhs.org (localhost [IPv6:::1]) by minnie.tuhs.org (Postfix) with ESMTP id A7A3B43345; Thu, 2 Mar 2023 12:46:29 +1000 (AEST) Received: from mail-pl1-x62f.google.com (mail-pl1-x62f.google.com [IPv6:2607:f8b0:4864:20::62f]) by minnie.tuhs.org (Postfix) with ESMTPS id A4D404333E for ; Thu, 2 Mar 2023 12:46:20 +1000 (AEST) Received: by mail-pl1-x62f.google.com with SMTP id h8so12826330plf.10 for ; Wed, 01 Mar 2023 18:46:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=XeFQCeEvKWm2w0E5rwgToJRL8hZKm5tMdtjQUzTuL0g=; b=fYj681bSRMOBmkCfz6KiHFCinJy8oSohKbiDLI48HgncD+tk4GJoSIoEboQI5hy2cn 7pep0Ijnc1Fy4JIddb00V2sti5hneW3VdYn3dug09EFG0Ehk/T+uRGeOv7NwWJb7QbW4 eHKpNUpECSkjYfYayq/iVcjI57bdtagnUPB2DNCkNJmpr6iQO/8pXG1KdCgtOE04lMQg fTJYR33n7NWeUJShqk/I6Vt4LhPQrFfVWb4wwYxVR8hLt6EKCdZ8G7odCCmPaxpGtful uAJ+2hv4Dj+onzu5tWzYU2VsV8+L/6vjLcegt722UzvEnEKeZmWgxjIIhZYnBSAlkfTh 2r9Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=XeFQCeEvKWm2w0E5rwgToJRL8hZKm5tMdtjQUzTuL0g=; b=30lw54pkR/QBHC0AF9BpEyN2ihJVCXRcthxXwoPfdR0nUiAVYjoUoZpckaCKWQoFt5 DcXuVS+AzhX5HmywKXRHYwpG5TQnRy0pks0pcJGcytOO//1kTIEWnnZG1cIBw1sn7RuP W3b/ltkRSG7gjX+K9q8cufSEu32QjrTlhDNrOHvUgRirEjlVdzcWCmyiqkTdUAzpDekI wAXrF111Ef/m7GDQuG5/l4vAdcA9FSbAn99EZ64X/6EuWNRyV5R+hm42xv2EkdPQEZTa YpQfGCK7SBpp31HgBqXXif6Xg3kts6OpRWYkZjDNzY2lzJKHkWO2TQEYULUh35yuIfUn LMiw== X-Gm-Message-State: AO0yUKWYGV4J4/iwMEx/w73KF5usem58Ty1Y3b0bW6ijErKNr5x8RjhA HGbxZoheZlAXqh+JDbtE8wYWI9prOD7JF3jf7W4XKFHk X-Google-Smtp-Source: AK7set/OGgFUpeABZzyLgXEcvbsQvT3+ZYume7Q0joCNdBM6rR5UAP2Ai+FBjFOjEUzMltXGmyVaSl3V96xamjBylFU= X-Received: by 2002:a17:903:4289:b0:19a:9984:558c with SMTP id ju9-20020a170903428900b0019a9984558cmr3228083plb.6.1677725180016; Wed, 01 Mar 2023 18:46:20 -0800 (PST) MIME-Version: 1.0 References: <20230302013628.8E40618C07B@mercury.lcs.mit.edu> In-Reply-To: From: Rich Salz Date: Wed, 1 Mar 2023 21:46:09 -0500 Message-ID: To: Bakul Shah Content-Type: multipart/alternative; boundary="00000000000062bc4405f5e1d557" Message-ID-Hash: MSHJBOEQMRPMWFMYQKNUUFBBPXTR3IVX X-Message-ID-Hash: MSHJBOEQMRPMWFMYQKNUUFBBPXTR3IVX X-MailFrom: rich.salz@gmail.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: Noel Chiappa , The Eunuchs Hysterical Society X-Mailman-Version: 3.3.6b1 Precedence: list Subject: [TUHS] Re: Unix v7 icheck dup problem List-Id: The Unix Heritage Society mailing list Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: --00000000000062bc4405f5e1d557 Content-Type: text/plain; charset="UTF-8" > > > > then point out that you can feed the number in from either end (most or > least > > significant end first) - and proves that it will work either way! The > > committee was blown away. > > Doesn't everyone know that a number is divisible by 3 if the one digit > result after casting out 9s is divisible by 3? Sure. But the amazing point was it worked regardless of bit order. --00000000000062bc4405f5e1d557 Content-Type: text/html; charset="UTF-8"

> then point out that you can feed the number in from either end (most or least
> significant end first) - and proves that it will work either way! The
> committee was blown away.

Doesn't everyone know that a number is divisible by 3 if the one digit
result after casting out 9s is divisible by 3?

Sure. But the amazing point was it worked regardless of bit order.
--00000000000062bc4405f5e1d557--