Re: Portability

From	anton@mips.complang.tuwien.ac.at (Anton Ertl)
Newsgroups	comp.lang.forth
Subject	Re: Portability
Date	2013-04-09 07:21 +0000
Organization	Institut fuer Computersprachen, Technische Universitaet Wien
Message-ID	<2013Apr9.092129@mips.complang.tuwien.ac.at> (permalink)
References	<Q_ednQPtEZJqe8LMnZ2dnUVZ7vqdnZ2d@giganews.com> <516007a4$0$619$e4fe514c@dreader34.news.xs4all.nl> <e8qdnQ9Z-t56G_3MnZ2dnUVZ_qadnZ2d@supernews.com> <kjvlfb$bfv$1@speranza.aioe.org> <51636f44$0$596$e4fe514c@dreader34.news.xs4all.nl>

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albert@spenarnc.xs4all.nl (Albert van der Horst) writes:
>In article <kjvlfb$bfv$1@speranza.aioe.org>, Ed <invalid@nospam.com> wrote:
>>Elizabeth D. Rather wrote:
>>> ...
>>> However, we
>>> did take pains to optimize our ITC Forths to each processor, making
>>> appropriate register allocations for stack pointers, etc., so as to get
>>> the best performance on that platform. Back in the day, FORTH, Inc. ITC
>>> Forths were as much as 10x faster than FigForths on the same processor.

The second coming of Jeff Fox?  Please name the processor and the
benchmark.  I remember you claiming that fig-Forth's NEXT contained
subroutine calls, which is false.

>>More definitions might have been coded for speed but given the
>>goal of FigForth - to put Forth into the hands of hobbyists cheaply
>>when no-else would - it has stood up remarkably well.  If there
>>was an outright design flaw in FigForth, I'd nominate:
>>
>>    : <   -  0<  ;
>>
>>    -32000 30000 < . 0  ok
>>
>>Even computer math needs to work as expected ...
>
>I cared to look that up. In the 6502, the 6809, the Z80 and the
>8086 listings I inspected, < (``LESS'') was implemented as a small
>code sequence, that looked ok.

Yes, in figForth '<' is a signed comparison.  AFAIK some of Chuck
Moore's Forths use the so-called circular comparison shown above.

- anton
-- 
M. Anton Ertl  http://www.complang.tuwien.ac.at/anton/home.html
comp.lang.forth FAQs: http://www.complang.tuwien.ac.at/forth/faq/toc.html
     New standard: http://www.forth200x.org/forth200x.html
   EuroForth 2013: http://www.euroforth.org/ef13/

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Thread

 Portability kenney@cix.compulink.co.uk - 2013-04-06 04:12 -0500
  Re: Portability albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-04-06 11:31 +0000
    Re: Portability "Elizabeth D. Rather" <erather@forth.com> - 2013-04-06 10:34 -1000
      Re: Portability "Ed" <invalid@nospam.com> - 2013-04-09 09:56 +1000
        Re: Portability albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-04-09 01:30 +0000
          Re: Portability anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-04-09 07:21 +0000
            Re: Portability "Elizabeth D. Rather" <erather@forth.com> - 2013-04-08 22:18 -1000
              Re: Portability anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-04-09 12:41 +0000
                Re: Portability Coos Haak <chforth@hccnet.nl> - 2013-04-09 17:21 +0200
                Re: Portability "Elizabeth D. Rather" <erather@forth.com> - 2013-04-09 08:06 -1000
                Re: Portability Bernd Paysan <bernd.paysan@gmx.de> - 2013-04-09 22:34 +0200
                Re: Portability "Elizabeth D. Rather" <erather@forth.com> - 2013-04-09 12:05 -1000
                Re: Portability "Elizabeth D. Rather" <erather@forth.com> - 2013-04-09 14:19 -1000
                Re: Portability Chris <xrissmith@me.com> - 2013-04-09 20:45 -0700
                Re: Portability "Ed" <invalid@nospam.com> - 2013-04-10 14:02 +1000
                Re: Portability Hugh Aguilar <hughaguilar96@yahoo.com> - 2013-04-09 23:00 -0700
                Re: Portability "WJ" <w_a_x_man@yahoo.com> - 2013-04-12 14:41 +0000
                Re: Portability "Ed" <invalid@nospam.com> - 2013-04-13 15:34 +1000
                Re: Portability anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-04-10 15:19 +0000
                Re: Portability albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-04-10 11:46 +0000
                Re: Portability anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-04-10 15:03 +0000
                Re: Portability Hugh Aguilar <hughaguilar96@yahoo.com> - 2013-04-09 18:28 -0700
            Re: Portability Hugh Aguilar <hughaguilar96@yahoo.com> - 2013-04-09 17:00 -0700
          Re: Portability "Ed" <invalid@nospam.com> - 2013-04-10 13:00 +1000
            Re: Portability albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-04-10 11:55 +0000
              Re: Portability Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-10 10:10 -0500
                Re: Portability anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-04-10 15:56 +0000
                Re: Portability Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-10 16:18 -0500
                Re: Portability anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-04-11 13:24 +0000
                Re: Portability Hugh Aguilar <hughaguilar96@yahoo.com> - 2013-04-11 20:50 -0700
                Re: Portability Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-12 04:17 -0500
                Re: Portability anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-04-12 13:43 +0000
                Re: Portability Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-12 11:08 -0500
                Re: Portability albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-04-12 18:50 +0000
                Re: Portability Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-13 03:57 -0500
                Re: Portability anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-04-13 11:59 +0000
                Re: Portability Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-13 14:47 -0500
                Re: Portability rickman <gnuarm@gmail.com> - 2013-04-12 10:44 -0400
                Re: Portability Bernd Paysan <bernd.paysan@gmx.de> - 2013-04-15 16:20 +0200
                Re: Portability "Elizabeth D. Rather" <erather@forth.com> - 2013-04-16 08:12 -1000
                Re: Portability "A.K." <akk@nospam.org> - 2013-04-16 22:21 +0200
                Re: Portability Bernd Paysan <bernd.paysan@gmx.de> - 2013-04-16 22:33 +0200
                Re: Portability "Ed" <invalid@nospam.com> - 2013-04-19 15:04 +1000
                Re: Portability anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-04-15 15:46 +0000
                Re: Portability Sieur de Bienville <morrimichael@gmail.com> - 2013-04-15 19:19 -0700
                Re: Portability anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-04-16 12:53 +0000
                Re: Portability rickman <gnuarm@gmail.com> - 2013-04-16 17:29 -0400
                Re: Portability "Elizabeth D. Rather" <erather@forth.com> - 2013-04-16 11:44 -1000
                Re: Portability rickman <gnuarm@gmail.com> - 2013-04-16 18:00 -0400
                Re: Portability Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-16 17:33 -0500
                Re: Portability "Elizabeth D. Rather" <erather@forth.com> - 2013-04-16 12:46 -1000
                Re: Portability rickman <gnuarm@gmail.com> - 2013-04-17 13:09 -0400
                Re: Portability Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-17 12:20 -0500
                Re: Portability "Elizabeth D. Rather" <erather@forth.com> - 2013-04-17 07:38 -1000
                Re: Portability Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-17 16:43 -0500
                Re: Portability rickman <gnuarm@gmail.com> - 2013-04-17 20:03 -0400
                Re: Portability Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-18 16:53 -0500
                Re: Portability rickman <gnuarm@gmail.com> - 2013-04-18 18:02 -0400
                Re: Portability Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-19 03:30 -0500
                Re: Portability rickman <gnuarm@gmail.com> - 2013-04-19 15:31 -0400
                Re: Portability anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-04-22 09:59 +0000
                Re: Portability Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-22 07:28 -0500
                Re: Portability anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-04-22 15:27 +0000
                Re: Portability Hugh Aguilar <hughaguilar96@yahoo.com> - 2013-04-22 18:16 -0700
                Re: Portability anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-04-17 10:23 +0000
                Re: Portability rickman <gnuarm@gmail.com> - 2013-04-17 13:46 -0400
                Re: Portability anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-04-22 09:47 +0000
                Re: Portability Brad Eckert <hwfwguy@gmail.com> - 2013-04-17 10:32 -0700
                Re: Portability nobody@nowhere - 2013-04-17 17:36 +0000
                Re: Portability rickman <gnuarm@gmail.com> - 2013-04-17 14:21 -0400
                Re: Portability Brad Eckert <hwfwguy@gmail.com> - 2013-04-17 15:03 -0700
                Re: Portability rickman <gnuarm@gmail.com> - 2013-04-17 18:22 -0400
                Re: Portability rickman <gnuarm@gmail.com> - 2013-04-17 18:24 -0400
                Re: Portability rickman <gnuarm@gmail.com> - 2013-04-18 00:51 -0400
                Re: Portability rickman <gnuarm@gmail.com> - 2013-04-18 17:19 -0400
                Re: Portability Brad Eckert <hwfwguy@gmail.com> - 2013-04-19 12:37 -0700
                Re: Portability rickman <gnuarm@gmail.com> - 2013-04-19 15:53 -0400
                Re: Portability Lars Brinkhoff <lars.spam@nocrew.org> - 2013-04-17 19:26 +0200
                Re: Portability albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-04-10 18:50 +0000
                Re: Portability Bernd Paysan <bernd.paysan@gmx.de> - 2013-04-10 22:14 +0200
                Re: Portability Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-12 04:18 -0500
                Re: Portability "Elizabeth D. Rather" <erather@forth.com> - 2013-04-12 08:30 -1000
                Re: Portability albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-04-12 18:58 +0000
                Re: Portability "Elizabeth D. Rather" <erather@forth.com> - 2013-04-12 11:29 -1000
              Re: Portability "Ed" <invalid@nospam.com> - 2013-04-13 14:57 +1000
        Re: Portability Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-04-09 04:11 -0500

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