Re: Moving 2/ from assembler to loadable extension

Newsgroups	comp.lang.forth
Date	2013-06-18 17:05 -0700
References	<51b5de45$0$620$e4fe514c@dreader34.news.xs4all.nl>
Message-ID	<ac6869a9-caf6-4a59-96ed-4c5cd33bd0f0@googlegroups.com> (permalink)
Subject	Re: Moving 2/ from assembler to loadable extension
From	Pablo Hugo Reda <pabloreda@gmail.com>

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El lunes, 10 de junio de 2013 11:10:13 UTC-3, Albert van der Horst  escribió:
> In the project of an ISO jonesforth equivalent the Hayes suite
> 
> kept giving errors.
> 
> 
> 
> It turns out you can't do just
> 
> : 2/ 2 / ;
> 
> 
> 
> The correct equivalent is:
> 
> 
> 
> : 2/ DUP 0< 2 FM/MOD NIP ;
> 
> 
> 
> where FM/MOD is derived (not easily) from SM/REM
> 
> 
> 
> Boy, I'm I glad that I thread carefully with simplifying,
> 
> deleting words a couple at a time.
> 
> 
> 
> Groetjes Albert
> 
> -- 
> 
> Albert van der Horst, UTRECHT,THE NETHERLANDS
> 
> Economic growth -- being exponential -- ultimately falters.
> 
> albert@spe&ar&c.xs4all.nl &=n http://home.hccnet.nl/a.w.m.van.der.horst

Albert
I don't know jonesforth but if is a x86 forth the 2/ word is a shift right with sign propagation, not have sense make a real division by 2 in a binary computer!!
but the shift right with sign propagation have a diferent behavior with -1, -1 2/ (with shift) is -1, not 0.
I hope this help.

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Moving 2/ from assembler to loadable extension albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-06-10 14:10 +0000
  Re: Moving 2/ from assembler to loadable extension The Beez <the.beez.speaks@gmail.com> - 2013-06-10 08:12 -0700
    Re: Moving 2/ from assembler to loadable extension Coos Haak <chforth@hccnet.nl> - 2013-06-10 21:50 +0200
  Re: Moving 2/ from assembler to loadable extension anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-06-11 12:52 +0000
    Re: Moving 2/ from assembler to loadable extension Sieur de Bienville <morrimichael@gmail.com> - 2013-06-15 21:21 -0700
      Re: Moving 2/ from assembler to loadable extension Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-06-16 09:41 -0500
        Re: Moving 2/ from assembler to loadable extension Bernd Paysan <bernd.paysan@gmx.de> - 2013-06-16 22:50 +0200
          Re: Moving 2/ from assembler to loadable extension Coos Haak <chforth@hccnet.nl> - 2013-06-17 01:21 +0200
            Re: Moving 2/ from assembler to loadable extension Bernd Paysan <bernd.paysan@gmx.de> - 2013-06-17 13:51 +0200
              Re: Moving 2/ from assembler to loadable extension Coos Haak <chforth@hccnet.nl> - 2013-06-17 17:04 +0200
                Re: Moving 2/ from assembler to loadable extension Coos Haak <chforth@hccnet.nl> - 2013-06-17 17:07 +0200
                Re: Moving 2/ from assembler to loadable extension Bernd Paysan <bernd.paysan@gmx.de> - 2013-06-18 00:49 +0200
                Re: Moving 2/ from assembler to loadable extension anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-06-18 07:41 +0000
                Re: Moving 2/ from assembler to loadable extension "Elizabeth D. Rather" <erather@forth.com> - 2013-06-17 22:11 -1000
                Re: Moving 2/ from assembler to loadable extension Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-06-18 04:13 -0500
                Re: Moving 2/ from assembler to loadable extension Coos Haak <chforth@hccnet.nl> - 2013-06-18 13:37 +0200
                Re: Moving 2/ from assembler to loadable extension Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-06-18 09:42 -0500
                Re: Moving 2/ from assembler to loadable extension anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-06-18 15:51 +0000
                Re: Moving 2/ from assembler to loadable extension Coos Haak <chforth@hccnet.nl> - 2013-06-18 22:52 +0200
                Re: Moving 2/ from assembler to loadable extension albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-06-19 00:12 +0000
              Re: Moving 2/ from assembler to loadable extension albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-06-17 19:55 +0000
      Re: Moving 2/ from assembler to loadable extension anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-06-17 16:04 +0000
        Re: Moving 2/ from assembler to loadable extension Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-06-17 16:16 -0500
          Re: Moving 2/ from assembler to loadable extension albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-06-17 22:59 +0000
          Euclidian division (was: Moving 2/ from assembler ...) anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-06-18 07:49 +0000
          Re: Moving 2/ from assembler to loadable extension rickman <gnuarm@gmail.com> - 2013-06-18 17:29 -0400
            Re: Moving 2/ from assembler to loadable extension Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-06-18 18:18 -0500
              Re: Moving 2/ from assembler to loadable extension rickman <gnuarm@gmail.com> - 2013-06-18 19:47 -0400
            Re: Moving 2/ from assembler to loadable extension albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-06-19 00:16 +0000
            Re: Moving 2/ from assembler to loadable extension Bernd Paysan <bernd.paysan@gmx.de> - 2013-06-19 15:09 +0200
              Re: Moving 2/ from assembler to loadable extension rickman <gnuarm@gmail.com> - 2013-06-19 17:55 -0400
          Euclidian Division (was: Moving 2/ from assembler ...) anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-06-28 14:49 +0000
            Re: Euclidian Division Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-06-28 11:20 -0500
      Re: Moving 2/ from assembler to loadable extension Marc Olschok <nobody@nowhere.invalid> - 2013-06-19 23:11 +0000
  Re: Moving 2/ from assembler to loadable extension Pablo Hugo Reda <pabloreda@gmail.com> - 2013-06-18 17:05 -0700

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