Re: Stack Operator Symbols

From	anton@mips.complang.tuwien.ac.at (Anton Ertl)
Newsgroups	comp.lang.forth
Subject	Re: Stack Operator Symbols
Date	2016-10-31 12:12 +0000
Organization	Institut fuer Computersprachen, Technische Universitaet Wien
Message-ID	<2016Oct31.131235@mips.complang.tuwien.ac.at> (permalink)
References	(6 earlier) <1fqdnTibotrDKojFnZ2dnUU7-KnNnZ2d@supernews.com> <87k2cpl42w.fsf@nightsong.com> <nlxRz.173904$EN.36366@fx30.am4> <87fundl0i7.fsf@nightsong.com> <tMednQ-_iuzahIrFnZ2dnUU7-XednZ2d@supernews.com>

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Andrew Haley <andrew29@littlepinkcloud.invalid> writes:
>Paul Rubin <no.email@nospam.invalid> wrote:
>> Spiros Bousbouras <spibou@gmail.com> writes:
>>> "you wouldn't write code like this in Forth for any other purpose than
>>> a benchmark".
>> 
>> Would you code that function differently if it were for some purpose
>> other than benchmarking?
>
>Perhaps.  To start with, the outermost recursive call could be turned
>into a while loop and the args reordered to (z y x) to simplify stack
>handling.

Given that the arguments are rotated all the way, I don't see how z y
x would help.  Please enlighten me with code.

>Also, the stack depth might be prohibitively large on some
>systems, so maybe further action would be required.

Not a problem on the systems I tried, but a stack effect of

( a b c -- a b c r )

might not just reduce stack depth, but also have other benefits.

- 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 2016: http://www.euroforth.org/ef16/

Thread

Stack Operator Symbols trans <transfire@gmail.com> - 2016-10-24 20:42 -0700
  Re: Stack Operator Symbols hughaguilar96@gmail.com - 2016-10-25 01:58 -0700
  Re: Stack Operator Symbols november.nihal@gmail.com - 2016-10-25 10:52 -0700
  Re: Stack Operator Symbols Rod Pemberton <NeedNotReplyHere@xrsevnneqk.cem> - 2016-10-27 19:13 -0400
    Re: Stack Operator Symbols "Elizabeth D. Rather" <erather@forth.com> - 2016-10-27 17:08 -1000
      Re: Stack Operator Symbols "HAA" <someone@microsoft.com> - 2016-10-28 21:53 +1000
        Re: Stack Operator Symbols hughaguilar96@gmail.com - 2016-10-28 20:42 -0700
          Re: Stack Operator Symbols Walter Banks <walter@bytecraft.com> - 2016-10-29 17:15 -0400
            Re: Stack Operator Symbols hughaguilar96@gmail.com - 2016-10-29 17:27 -0700
        Re: Stack Operator Symbols "Elizabeth D. Rather" <erather@forth.com> - 2016-10-28 20:56 -1000
      Re: Stack Operator Symbols Paul Rubin <no.email@nospam.invalid> - 2016-10-29 00:46 -0700
        Re: Stack Operator Symbols Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-10-29 04:30 -0500
          Re: Stack Operator Symbols rickman <gnuarm@gmail.com> - 2016-10-29 16:58 -0400
          Re: Stack Operator Symbols Paul Rubin <no.email@nospam.invalid> - 2016-10-29 14:21 -0700
            Re: Stack Operator Symbols Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-10-30 04:03 -0500
              Re: Stack Operator Symbols Paul Rubin <no.email@nospam.invalid> - 2016-10-30 18:06 -0700
                Re: Stack Operator Symbols Spiros Bousbouras <spibou@gmail.com> - 2016-10-31 01:43 +0000
                Re: Stack Operator Symbols Paul Rubin <no.email@nospam.invalid> - 2016-10-30 19:23 -0700
                Re: Stack Operator Symbols Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-10-31 05:13 -0500
                Re: Stack Operator Symbols albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-10-31 12:42 +0100
                Re: Stack Operator Symbols anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-10-31 12:12 +0000
                Re: Stack Operator Symbols anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-10-31 14:49 +0000
                Re: Stack Operator Symbols mhx@iae.nl - 2016-10-31 13:17 -0700
                Re: Stack Operator Symbols anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-03 16:38 +0000
                Re: Stack Operator Symbols Spiros Bousbouras <spibou@gmail.com> - 2016-11-20 14:33 +0000
                Re: Stack Operator Symbols anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-10-31 08:35 +0000
            Re: Stack Operator Symbols anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-10-30 11:01 +0000
              Re: Stack Operator Symbols hughaguilar96@gmail.com - 2016-10-30 10:01 -0700
            Re: Stack Operator Symbols hughaguilar96@gmail.com - 2016-11-03 14:46 -0700
              Re: Stack Operator Symbols anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-04 23:04 +0000
                Re: Stack Operator Symbols Rod Pemberton <NeedNotReplyHere@xrsevnneqk.cem> - 2016-11-05 03:16 -0400
        Re: Stack Operator Symbols peter.m.falth@gmail.com - 2016-10-29 09:13 -0700
          Re: Stack Operator Symbols "HAA" <someone@microsoft.com> - 2016-10-30 08:47 +1100
            Re: Stack Operator Symbols trans <transfire@gmail.com> - 2016-10-29 14:57 -0700
              Re: Stack Operator Symbols "HAA" <someone@microsoft.com> - 2016-10-30 09:20 +1100
        Re: Stack Operator Symbols Rod Pemberton <NeedNotReplyHere@xrsevnneqk.cem> - 2016-10-29 18:46 -0400
          Re: Stack Operator Symbols Paul Rubin <no.email@nospam.invalid> - 2016-10-29 19:45 -0700
            Re: Stack Operator Symbols hughaguilar96@gmail.com - 2016-10-29 20:29 -0700
              Re: Stack Operator Symbols hughaguilar96@gmail.com - 2016-10-29 20:47 -0700
                Re: Stack Operator Symbols Cecil Bayona <cbayona@cbayona.com> - 2016-10-29 23:15 -0500
                Re: Stack Operator Symbols "Elizabeth D. Rather" <erather@forth.com> - 2016-10-29 21:37 -1000
                Re: Stack Operator Symbols hughaguilar96@gmail.com - 2016-10-30 10:07 -0700
            Re: Stack Operator Symbols "Elizabeth D. Rather" <erather@forth.com> - 2016-10-29 21:35 -1000
              Re: Stack Operator Symbols "HAA" <someone@microsoft.com> - 2016-10-31 13:11 +1100
                Re: Stack Operator Symbols hughaguilar96@gmail.com - 2016-10-30 20:02 -0700
                Re: Stack Operator Symbols "Elizabeth D. Rather" <erather@forth.com> - 2016-10-30 22:08 -1000
                Re: Stack Operator Symbols anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-10-31 09:02 +0000
                Re: Stack Operator Symbols "HAA" <someone@microsoft.com> - 2016-11-03 20:49 +1100
                Re: Stack Operator Symbols anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-03 15:33 +0000
                Re: Stack Operator Symbols Rod Pemberton <NeedNotReplyHere@xrsevnneqk.cem> - 2016-11-03 16:55 -0400
                Re: Stack Operator Symbols anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-03 22:21 +0000
  Re: Stack Operator Symbols hughaguilar96@gmail.com - 2016-10-27 20:31 -0700
    Re: Stack Operator Symbols november.nihal@gmail.com - 2016-10-28 09:52 -0700
      Re: Stack Operator Symbols hughaguilar96@gmail.com - 2016-10-28 20:32 -0700
  Re: Stack Operator Symbols Mark Wills <markwills1970@gmail.com> - 2016-10-30 04:49 -0700
    Re: Stack Operator Symbols Coos Haak <htrofhc@gmail.com> - 2016-10-30 14:49 +0100
      Re: Stack Operator Symbols Matthias Koch <matthias.koch@hot.uni-hannover.de> - 2016-10-31 13:31 +0100
        Re: Stack Operator Symbols Coos Haak <htrofhc@gmail.com> - 2016-10-31 14:12 +0100
          Re: Stack Operator Symbols Matthias Koch <matthias.koch@hot.uni-hannover.de> - 2016-10-31 15:03 +0100
        Re: Stack Operator Symbols Mark Wills <markwills1970@gmail.com> - 2016-11-03 14:22 -0700
          Re: Stack Operator Symbols Coos Haak <htrofhc@gmail.com> - 2016-11-04 00:46 +0100
        Re: Stack Operator Symbols "HAA" <someone@microsoft.com> - 2016-11-05 13:14 +1100
    Re: Stack Operator Symbols trans <transfire@gmail.com> - 2016-10-30 06:50 -0700
      Re: Stack Operator Symbols trans <transfire@gmail.com> - 2016-10-30 08:56 -0700
      Re: Stack Operator Symbols albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-10-30 18:19 +0100

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