Re: BASIC is 50

From	Marko Rauhamaa <marko@pacujo.net>
Newsgroups	comp.misc
Subject	Re: BASIC is 50
Date	2014-05-08 20:17 +0300
Organization	A noiseless patient Spider
Message-ID	<878uqcur5e.fsf@elektro.pacujo.net> (permalink)
References	(4 earlier) <gknav.371282$sa2.196137@fx33.am4> <bsuj7gFd631U1@mid.individual.net> <Xtpav.335997$5V5.276603@fx08.am4> <87y4ydhh7i.fsf@elektro.pacujo.net> <kkms3b-3562.ln1@news.chingola.ch>

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Paul Sture <nospam@sture.ch>:

> One of the first things I was taught about integer arithmetic on
> computers was that for multiplications you need an intermediate field
> at least as large as the sum of the number of digits in each
> component.

True. Luckily 128-bit arithmetics isn't hard to come by or implement by
hand.

The other thing is that 2's-complement multiplication behaves nicely wrt
integer overflows (division not so much). So even if you multiplication
overflows, many times your bottom line is correct anyway.


Marko

Thread

BASIC is 50 Gordon Henderson <gordon+usenet@drogon.net> - 2014-04-30 09:34 +0000
  Re: BASIC is 50 Ant <ant@zimage.comANT> - 2014-04-30 03:42 -0700
    Re: BASIC is 50 Bob Eager <news0002@eager.cx> - 2014-04-30 10:46 +0000
      Re: BASIC is 50 Gordon Henderson <gordon+usenet@drogon.net> - 2014-04-30 12:03 +0000
  Re: BASIC is 50 Rich <rich@example.com> - 2014-04-30 11:12 +0000
    Re: BASIC is 50 scott@alfter.diespammersdie.us (Scott Alfter) - 2014-04-30 15:56 +0000
      Re: BASIC is 50 Rich <rich@example.com> - 2014-04-30 20:41 +0000
        Re: BASIC is 50 Will Honea <whonea@whonea.net> - 2014-04-30 18:38 -0600
          Re: BASIC is 50 Rich <rich@example.com> - 2014-05-01 02:38 +0000
            Re: BASIC is 50 Will Honea <whonea@whonea.net> - 2014-04-30 22:50 -0600
      Re: BASIC is 50 Rich <rich@example.com> - 2014-04-30 20:48 +0000
        Re: BASIC is 50 Richard Kettlewell <rjk@greenend.org.uk> - 2014-05-02 09:27 +0100
          Re: BASIC is 50 Tim Streater <timstreater@greenbee.net> - 2014-05-02 09:50 +0100
        Re: BASIC is 50 "BartC" <bc@freeuk.com> - 2014-05-07 10:48 +0100
          Re: BASIC is 50 Tim Streater <timstreater@greenbee.net> - 2014-05-07 10:57 +0100
          Re: BASIC is 50 Huge <Huge@nowhere.much.invalid> - 2014-05-07 11:20 +0000
            Re: BASIC is 50 "BartC" <bc@freeuk.com> - 2014-05-07 13:14 +0100
              Re: BASIC is 50 Marko Rauhamaa <marko@pacujo.net> - 2014-05-07 16:05 +0300
                Re: BASIC is 50 Paul Sture <nospam@sture.ch> - 2014-05-08 18:06 +0200
                Re: BASIC is 50 Marko Rauhamaa <marko@pacujo.net> - 2014-05-08 20:17 +0300
              Re: BASIC is 50 "James Harris" <james.harris.1@gmail.com> - 2014-05-07 16:08 +0100
                Re: BASIC is 50 "BartC" <bc@freeuk.com> - 2014-05-07 18:38 +0100
                Re: BASIC is 50 "James Harris" <james.harris.1@gmail.com> - 2014-05-07 19:09 +0100
                Re: BASIC is 50 Huge <Huge@nowhere.much.invalid> - 2014-05-07 19:08 +0000
              Re: BASIC is 50 greymausg@mail.com - 2014-05-08 10:15 +0000
                Re: BASIC is 50 "BartC" <bc@freeuk.com> - 2014-05-08 11:38 +0100
              Re: BASIC is 50 Paul Sture <nospam@sture.ch> - 2014-05-08 17:55 +0200
          Re: BASIC is 50 Paul Sture <nospam@sture.ch> - 2014-05-08 17:44 +0200
          Re: BASIC is 50 Rich <rich@example.com> - 2014-05-12 12:39 +0000
            Re: BASIC is 50 Marko Rauhamaa <marko@pacujo.net> - 2014-05-12 16:06 +0300
            Re: BASIC is 50 Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-05-12 22:48 +0100
              Re: BASIC is 50 Rich <rich@example.com> - 2014-05-13 12:03 +0000
                Re: BASIC is 50 "BartC" <bc@freeuk.com> - 2014-05-13 13:23 +0100
                Re: BASIC is 50 Rich <rich@example.com> - 2014-05-13 16:22 +0000
                Re: BASIC is 50 "BartC" <bc@freeuk.com> - 2014-05-13 19:42 +0100
                Re: BASIC is 50 "BartC" <bc@freeuk.com> - 2014-05-13 19:49 +0100
                Re: BASIC is 50 Rich <rich@example.com> - 2014-05-14 01:09 +0000
                Re: BASIC is 50 "BartC" <bc@freeuk.com> - 2014-05-14 09:51 +0100
                Re: BASIC is 50 bde@besplex.bde.org (Bruce Evans) - 2014-05-14 10:36 +0000
                Re: BASIC is 50 "BartC" <bc@freeuk.com> - 2014-05-14 12:58 +0100
                Re: BASIC is 50 bde@besplex.bde.org (Bruce Evans) - 2014-05-14 16:13 +0000
                Re: BASIC is 50 "BartC" <bc@freeuk.com> - 2014-05-14 19:24 +0100
                Re: BASIC is 50 Ben Bacarisse <ben.usenet@bsb.me.uk> - 2014-05-13 15:50 +0100
    Re: BASIC is 50 Johny B Good <johnny-b-good@invalid.ntlworld.com> - 2014-05-01 02:50 +0100
    Re: BASIC is 50 David Hume <David.Hume@example.com> - 2014-05-01 09:06 +0100
      Re: BASIC is 50 Gordon Henderson <gordon+usenet@drogon.net> - 2014-05-01 09:56 +0000
      Re: BASIC is 50 Rich <rich@example.com> - 2014-05-01 10:25 +0000
        Re: BASIC is 50 Marko Rauhamaa <marko@pacujo.net> - 2014-05-01 16:43 +0300
          Re: BASIC is 50 Gordon Henderson <gordon+usenet@drogon.net> - 2014-05-01 18:03 +0000
          Re: BASIC is 50 Bob Eager <news0002@eager.cx> - 2014-05-01 21:35 +0000
        Re: BASIC is 50 Rob <monst.oorzudo@ntlworld.com> - 2014-05-01 22:41 +0100
          Re: BASIC is 50 David Hume <David.Hume@example.com> - 2014-05-02 09:26 +0100
            Re: BASIC is 50 Hils <hils@saynotospam.net> - 2014-05-02 10:46 +0100
            Re: BASIC is 50 Johny B Good <johnny-b-good@invalid.ntlworld.com> - 2014-05-02 23:11 +0100
  Re: BASIC is 50 Anssi Saari <as@sci.fi> - 2014-04-30 17:51 +0300
  Re: BASIC is 50 Peter Percival <peterxpercival@hotmail.com> - 2014-05-14 17:40 +0100

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