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Groups > comp.lang.forth > #55928
| From | anton@mips.complang.tuwien.ac.at (Anton Ertl) |
|---|---|
| Newsgroups | comp.lang.forth |
| Subject | Re: When to use !name vs. name! ? |
| Date | 2017-03-19 16:23 +0000 |
| Organization | Institut fuer Computersprachen, Technische Universitaet Wien |
| Message-ID | <2017Mar19.172304@mips.complang.tuwien.ac.at> (permalink) |
| References | <oa7clo$1pao$1@gioia.aioe.org> <oakgpo$mjn$1@gioia.aioe.org> <oakpjr$lf6$1@dont-email.me> <bJmdndkW2_YCc1DFnZ2dnUU7-U_NnZ2d@supernews.com> <oaltt2$of8$1@cherry.spenarnc.xs4all.nl> |
albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) writes:
>I can see that these words are worth having, especially 2/ that is
>a bit manipulation despite the misleading name.
>On two's complement machine it is the same then '' 2 / ''
Only if / is floored:
SwiftForth i386-Linux 3.6.3 29-Jun-2016
-1 2 / . 0 ok
-1 2/ . -1 ok
VFX Forth for Linux IA32 Version: 4.72 [build 0555]
-1 2 / . 0 ok
-1 2/ . -1 ok
Gforth 0.7.2, Copyright (C) 1995-2008 Free Software Foundation, Inc.
Gforth comes with ABSOLUTELY NO WARRANTY; for details type `license'
Type `bye' to exit
-1 2 / . -1 ok
-1 2/ . -1 ok
>While '' 1 + '' optimises just fine, a code word for 1+ warrants
>special attention in an optimiser.
Why would you write 1+ as a code word if your optimizer can handle "1 +"?
: 1+ 1 + ;
- 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/
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When to use !name vs. name! ? "HAA" <someone@microsoft.com> - 2017-03-14 11:15 +1100
Re: When to use !name vs. name! ? hughaguilar96@gmail.com - 2017-03-13 18:27 -0700
Re: When to use !name vs. name! ? Mark Wills <markwills1970@gmail.com> - 2017-03-14 01:33 -0700
Re: When to use !name vs. name! ? Mark Wills <markwills1970@gmail.com> - 2017-03-14 01:30 -0700
When to use !name vs. name! ? NN <november.nihal@gmail.com> - 2017-03-14 02:56 -0700
Re: When to use !name vs. name! ? "HAA" <someone@microsoft.com> - 2017-03-16 08:59 +1100
Re: When to use !name vs. name! ? Mark Wills <markwills1970@gmail.com> - 2017-03-16 02:11 -0700
Re: When to use !name vs. name! ? "HAA" <someone@microsoft.com> - 2017-03-17 11:19 +1100
Re: When to use !name vs. name! ? rickman <gnuarm@gmail.com> - 2017-03-16 20:46 -0400
Re: When to use !name vs. name! ? "Elizabeth D. Rather" <erather@forth.com> - 2017-03-16 21:34 -1000
Re: When to use !name vs. name! ? "HAA" <someone@microsoft.com> - 2017-03-18 09:49 +1100
Re: When to use !name vs. name! ? "Elizabeth D. Rather" <erather@forth.com> - 2017-03-17 13:08 -1000
Re: When to use !name vs. name! ? rickman <gnuarm@gmail.com> - 2017-03-17 19:35 -0400
Re: When to use !name vs. name! ? Mark Wills <markwills1970@gmail.com> - 2017-03-18 00:51 -0700
Re: When to use !name vs. name! ? "HAA" <someone@microsoft.com> - 2017-03-19 10:47 +1100
Re: When to use !name vs. name! ? rickman <gnuarm@gmail.com> - 2017-03-18 22:18 -0400
Re: When to use !name vs. name! ? "Elizabeth D. Rather" <erather@forth.com> - 2017-03-18 16:36 -1000
Re: When to use !name vs. name! ? rickman <gnuarm@gmail.com> - 2017-03-18 23:53 -0400
Re: When to use !name vs. name! ? "Elizabeth D. Rather" <erather@forth.com> - 2017-03-18 22:22 -1000
Re: When to use !name vs. name! ? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-03-19 16:03 +0000
Re: When to use !name vs. name! ? Alex <alex@rivadpm.com> - 2017-03-19 17:42 +0000
Re: When to use !name vs. name! ? "Elizabeth D. Rather" <erather@forth.com> - 2017-03-19 13:10 -1000
Re: When to use !name vs. name! ? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2017-03-19 13:34 +0100
Re: When to use !name vs. name! ? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-03-19 16:23 +0000
Re: When to use !name vs. name! ? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2017-03-19 20:47 +0100
Re: When to use !name vs. name! ? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-03-20 03:47 -0500
Re: When to use !name vs. name! ? "HAA" <someone@microsoft.com> - 2017-03-20 09:41 +1100
Re: When to use !name vs. name! ? Coos Haak <htrofhc@gmail.com> - 2017-03-20 01:24 +0100
Re: When to use !name vs. name! ? "HAA" <someone@microsoft.com> - 2017-03-21 12:10 +1100
Re: When to use !name vs. name! ? hughaguilar96@gmail.com - 2017-03-20 18:45 -0700
Re: When to use !name vs. name! ? Coos Haak <htrofhc@gmail.com> - 2017-03-21 14:58 +0100
Re: When to use !name vs. name! ? "HAA" <someone@microsoft.com> - 2017-03-22 19:49 +1100
Re: When to use !name vs. name! ? hughaguilar96@gmail.com - 2017-03-17 16:46 -0700
Re: When to use !name vs. name! ? Lars Brinkhoff <lars.spam@nocrew.org> - 2017-04-12 08:13 +0200
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