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Groups > comp.lang.forth > #12353
| Date | 2012-05-21 08:36 -1000 |
|---|---|
| From | "Elizabeth D. Rather" <erather@forth.com> |
| Organization | FORTH, Inc. |
| Newsgroups | comp.lang.forth |
| Subject | Re: VFX code quality |
| References | (16 earlier) <7x8vgmffmz.fsf@ruckus.brouhaha.com> <ed-dnUkypMOSLCTSnZ2dnUVZ_jKdnZ2d@supernews.com> <7x396uurso.fsf@ruckus.brouhaha.com> <kNqdne6GPd8sbSTSnZ2dnUVZ_rGdnZ2d@supernews.com> <7xpq9yc516.fsf@ruckus.brouhaha.com> |
| Message-ID | <OOudnVB1WpuAFifSnZ2dnUVZ_jCdnZ2d@supernews.com> (permalink) |
On 5/20/12 10:27 PM, Paul Rubin wrote:
> "Elizabeth D. Rather"<erather@forth.com> writes:
>>> : z* ( a b c d -- ac-bd bc+ad )
>>> .... ;
>>
>> I don't understand your stack comment (I'm no mathematician)
>
> ac-bd just means a*c minus b*d. So the word takes 4 parameters a,b,c,d
> representing the two complex numbers a+bi and c+di. It multiplies them
> leaving the single complex number (ac-bd) + i*(bc+ad), as two
> coefficients on the stack. It's trivial with locals:
>
> : z* { a b c d -- x y }
> a c * b d * - b c * a d * + ;
>
> doing it without locals seems quite inconvenient. I think Chuck might
> have used globals.
No, he did that sort of thing as a code primitive, using registers.
Cheers,
Elizabeth
--
==================================================
Elizabeth D. Rather (US & Canada) 800-55-FORTH
FORTH Inc. +1 310.999.6784
5959 West Century Blvd. Suite 700
Los Angeles, CA 90045
http://www.forth.com
"Forth-based products and Services for real-time
applications since 1973."
==================================================
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I beleive that forth could supplant ruby and perl and python if it wanted to quiet_lad <gavcomedy@gmail.com> - 2012-05-15 23:27 -0700
Re: I beleive that forth could supplant ruby and perl and python if it wanted to marko <marko@marko.marko> - 2012-05-16 17:50 +1000
Re: I beleive that forth could supplant ruby and perl and python if it wanted to "Rod Pemberton" <do_not_have@notemailntt.cmm> - 2012-05-16 06:51 -0400
Re: I beleive that forth could supplant ruby and perl and python if it wanted to BruceMcF <agila61@netscape.net> - 2012-05-16 07:59 -0700
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Jason Damisch <jasondamisch@yahoo.com> - 2012-05-16 09:28 -0700
Re: I beleive that forth could supplant ruby and perl and python if it wanted to "Rod Pemberton" <do_not_have@notemailntt.cmm> - 2012-05-17 04:08 -0400
Re: I beleive that forth could supplant ruby and perl and python if it wanted to "Elizabeth D. Rather" <erather@forth.com> - 2012-05-16 22:22 -1000
Re: I beleive that forth could supplant ruby and perl and python if it wanted to "A. K." <akk@nospam.org> - 2012-05-17 11:43 +0200
Re: I beleive that forth could supplant ruby and perl and python if it wanted to "Rod Pemberton" <do_not_have@notemailntt.cmm> - 2012-05-17 10:22 -0400
Re: I beleive that forth could supplant ruby and perl and python if it wanted to "A. K." <akk@nospam.org> - 2012-05-17 17:03 +0200
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Bernd Paysan <bernd.paysan@gmx.de> - 2012-05-18 01:15 +0200
Re: I beleive that forth could supplant ruby and perl and python if it wanted to "Rod Pemberton" <do_not_have@notemailntt.cmm> - 2012-05-17 19:19 -0400
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Albert van der Horst <albert@spenarnc.xs4all.nl> - 2012-05-18 12:40 +0000
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Bernd Paysan <bernd.paysan@gmx.de> - 2012-05-18 00:17 +0200
Re: I beleive that forth could supplant ruby and perl and python if it wanted to vandys@vsta.org - 2012-05-17 16:02 +0000
Re: I beleive that forth could supplant ruby and perl and python if it wanted to "A. K." <akk@nospam.org> - 2012-05-17 18:08 +0200
Re: I beleive that forth could supplant ruby and perl and python if it wanted to vandys@vsta.org - 2012-05-17 16:58 +0000
Re: I beleive that forth could supplant ruby and perl and python if it to Nomen Nescio <nobody@dizum.com> - 2012-05-17 19:03 +0200
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-05-17 12:27 -0500
Re: I beleive that forth could supplant ruby and perl and python if it wanted to vandys@vsta.org - 2012-05-17 18:52 +0000
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-05-17 18:18 -0500
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Hugh Aguilar <hughaguilar96@yahoo.com> - 2012-05-18 01:39 -0700
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-05-18 04:50 -0500
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Hugh Aguilar <hughaguilar96@yahoo.com> - 2012-05-18 04:40 -0700
Re: I beleive that forth could supplant ruby and perl and python if it wanted to humptydumpty <ouatubi@gmail.com> - 2012-05-18 15:15 +0300
Re: I beleive that forth could supplant ruby and perl and python if it wanted to "Elizabeth D. Rather" <erather@forth.com> - 2012-05-18 08:02 -1000
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Paul Rubin <no.email@nospam.invalid> - 2012-05-17 12:40 -0700
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-05-17 18:32 -0500
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-05-18 01:45 -0500
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Paul Rubin <no.email@nospam.invalid> - 2012-05-19 11:28 -0700
Re: I beleive that forth could supplant ruby and perl and python if it wanted to "Peter Knaggs" <pjk@bcs.org.uk> - 2012-05-17 21:38 +0100
Re: I beleive that forth could supplant ruby and perl and python if it wanted to vandys@vsta.org - 2012-05-17 21:17 +0000
Re: I beleive that forth could supplant ruby and perl and python if it wanted to stephenXXX@mpeforth.com (Stephen Pelc) - 2012-05-18 09:41 +0000
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-05-18 04:55 -0500
Re: I beleive that forth could supplant ruby and perl and python if it wanted to stephenXXX@mpeforth.com (Stephen Pelc) - 2012-05-18 13:50 +0000
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Mark Wills <markrobertwills@yahoo.co.uk> - 2012-05-18 03:24 -0700
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-05-18 06:10 -0500
Re: I beleive that forth could supplant ruby and perl and python if it wanted to "Rod Pemberton" <do_not_have@notemailntt.cmm> - 2012-05-18 08:10 -0400
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Mark Wills <forthfreak@gmail.com> - 2012-05-18 05:57 -0700
Re: I beleive that forth could supplant ruby and perl and python if it wanted to "Elizabeth D. Rather" <erather@forth.com> - 2012-05-18 08:14 -1000
Re: I beleive that forth could supplant ruby and perl and python if it wanted to John Passaniti <john.passaniti@gmail.com> - 2012-05-18 10:01 -0700
VFX code quality (was: I beleive that forth could supplant ...) anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-05-18 12:58 +0000
Re: VFX code quality Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-05-18 09:43 -0500
Re: VFX code quality anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-05-19 10:54 +0000
Re: VFX code quality Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-05-19 11:43 -0500
Re: VFX code quality anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-05-22 08:26 +0000
Re: VFX code quality Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-05-22 03:52 -0500
Re: VFX code quality Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-05-22 04:02 -0500
Re: VFX code quality anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-05-22 09:25 +0000
Re: VFX code quality Bernd Paysan <bernd.paysan@gmx.de> - 2012-05-30 23:39 +0200
Re: VFX code quality anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-05-31 15:07 +0000
Re: VFX code quality Bernd Paysan <bernd.paysan@gmx.de> - 2012-05-31 20:24 +0200
Re: VFX code quality (was: I beleive that forth could supplant ...) stephenXXX@mpeforth.com (Stephen Pelc) - 2012-05-18 15:25 +0000
Re: VFX code quality (was: I beleive that forth could supplant ...) anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-05-19 11:31 +0000
Re: VFX code quality (was: I beleive that forth could supplant ...) Bernd Paysan <bernd.paysan@gmx.de> - 2012-05-20 17:41 +0200
Re: VFX code quality Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-05-20 12:49 -0500
Re: VFX code quality Paul Rubin <no.email@nospam.invalid> - 2012-05-20 11:43 -0700
Re: VFX code quality "Elizabeth D. Rather" <erather@forth.com> - 2012-05-20 14:01 -1000
Re: VFX code quality Paul Rubin <no.email@nospam.invalid> - 2012-05-20 19:10 -0700
Re: VFX code quality "Elizabeth D. Rather" <erather@forth.com> - 2012-05-20 17:05 -1000
Re: VFX code quality Paul Rubin <no.email@nospam.invalid> - 2012-05-20 20:38 -0700
Re: VFX code quality "Elizabeth D. Rather" <erather@forth.com> - 2012-05-20 21:37 -1000
Re: VFX code quality Paul Rubin <no.email@nospam.invalid> - 2012-05-21 01:27 -0700
Re: VFX code quality m.a.m.hendrix@tue.nl - 2012-05-21 01:52 -0700
Re: VFX code quality Ecki <ecki@intershop.de> - 2012-05-21 11:06 +0200
Re: VFX code quality mhx@iae.nl (Marcel Hendrix) - 2012-05-21 20:34 +0200
Re: VFX code quality Ecki <ecki@intershop.de> - 2012-05-22 08:54 +0200
Re: VFX code quality anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-05-21 14:36 +0000
Re: VFX code quality mhx@iae.nl (Marcel Hendrix) - 2012-05-21 20:33 +0200
Re: VFX code quality Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-05-21 04:29 -0500
Re: VFX code quality Paul Rubin <no.email@nospam.invalid> - 2012-05-21 08:39 -0700
Re: VFX code quality Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-05-21 15:22 -0500
Re: VFX code quality Paul Rubin <no.email@nospam.invalid> - 2012-05-22 12:47 -0700
Re: VFX code quality "Elizabeth D. Rather" <erather@forth.com> - 2012-05-22 11:25 -1000
Re: VFX code quality Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-05-23 03:19 -0500
Re: VFX code quality Paul Rubin <no.email@nospam.invalid> - 2012-05-24 22:51 -0700
Re: VFX code quality Paul Rubin <no.email@nospam.invalid> - 2012-05-24 23:16 -0700
Re: VFX code quality Fritz Wuehler <fritz@spamexpire-201205.rodent.frell.theremailer.net> - 2012-05-23 17:36 +0200
Re: VFX code quality Doug Hoffman <glidedog@gmail.com> - 2012-05-21 12:57 -0400
Re: VFX code quality "Elizabeth D. Rather" <erather@forth.com> - 2012-05-21 08:42 -1000
Re: VFX code quality Doug Hoffman <glidedog@gmail.com> - 2012-05-21 19:41 -0400
Re: VFX code quality Paul Rubin <no.email@nospam.invalid> - 2012-05-21 21:53 -0700
Re: VFX code quality Doug Hoffman <glidedog@gmail.com> - 2012-05-22 07:10 -0400
Re: VFX code quality "Elizabeth D. Rather" <erather@forth.com> - 2012-05-21 08:36 -1000
Re: VFX code quality Paul Rubin <no.email@nospam.invalid> - 2012-05-21 21:46 -0700
Re: VFX code quality "Elizabeth D. Rather" <erather@forth.com> - 2012-05-21 20:30 -1000
Re: VFX code quality David Kuehling <dvdkhlng@gmx.de> - 2012-05-22 14:06 +0200
Re: VFX code quality Doug Hoffman <glidedog@gmail.com> - 2012-05-22 08:59 -0400
FP locals (was: VFX code quality) anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-05-22 13:39 +0000
Re: FP locals Doug Hoffman <glidedog@gmail.com> - 2012-05-22 14:03 -0400
Re: FP locals (was: VFX code quality) C G Montgomery <cgm@physics.utoledo.edu> - 2012-05-22 18:09 -0400
Re: FP locals (was: VFX code quality) Krishna Myneni <krishna.myneni@ccreweb.org> - 2012-05-23 03:47 -0700
Re: FP locals (was: VFX code quality) "Ed" <invalid@nospam.com> - 2012-05-26 21:03 +1000
Re: FP locals (was: VFX code quality) Krishna Myneni <krishna.myneni@ccreweb.org> - 2012-05-26 04:40 -0700
Re: FP locals (was: VFX code quality) mhx@iae.nl (Marcel Hendrix) - 2012-05-26 18:27 +0200
Re: FP locals (was: VFX code quality) Krishna Myneni <krishna.myneni@ccreweb.org> - 2012-05-26 12:55 -0700
Re: FP locals (was: VFX code quality) BruceMcF <agila61@netscape.net> - 2012-05-26 14:54 -0700
Re: FP locals (was: VFX code quality) Krishna Myneni <krishna.myneni@ccreweb.org> - 2012-05-26 22:02 -0700
Re: FP locals (was: VFX code quality) mhx@iae.nl (Marcel Hendrix) - 2012-05-27 08:50 +0200
Re: FP locals (was: VFX code quality) Krishna Myneni <krishna.myneni@ccreweb.org> - 2012-05-27 05:26 -0700
Re: VFX code quality BruceMcF <agila61@netscape.net> - 2012-05-22 09:04 -0700
Re: VFX code quality "A. K." <akk@nospam.org> - 2012-05-21 09:55 +0200
Re: VFX code quality Paul Rubin <no.email@nospam.invalid> - 2012-05-21 01:22 -0700
Re: VFX code quality "A. K." <akk@nospam.org> - 2012-05-21 14:19 +0200
Re: VFX code quality Paul Rubin <no.email@nospam.invalid> - 2012-05-22 12:33 -0700
Re: VFX code quality "A. K." <akk@nospam.org> - 2012-05-22 23:14 +0200
Re: VFX code quality mhx@iae.nl (Marcel Hendrix) - 2012-05-21 20:31 +0200
Re: VFX code quality Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-05-21 15:17 -0500
Re: VFX code quality BruceMcF <agila61@netscape.net> - 2012-05-21 13:50 -0700
Re: VFX code quality BruceMcF <agila61@netscape.net> - 2012-05-21 16:47 -0700
Re: VFX code quality "Harry Vaderchi" <admin@127.0.0.1> - 2012-05-22 09:57 +0100
Re: VFX code quality BruceMcF <agila61@netscape.net> - 2012-05-22 04:39 -0700
Re: VFX code quality mhx@iae.nl (Marcel Hendrix) - 2012-05-23 20:25 +0200
Re: VFX code quality BruceMcF <agila61@netscape.net> - 2012-05-23 13:47 -0700
Re: VFX code quality humptydumpty <ouatubi@gmail.com> - 2012-05-21 20:23 +0000
Re: VFX code quality BruceMcF <agila61@netscape.net> - 2012-05-20 20:22 -0700
Re: VFX code quality Albert van der Horst <albert@spenarnc.xs4all.nl> - 2012-05-21 10:57 +0000
Re: VFX code quality Bernd Paysan <bernd.paysan@gmx.de> - 2012-05-21 01:35 +0200
Re: VFX code quality Hugh Aguilar <hughaguilar96@yahoo.com> - 2012-05-20 22:44 -0700
Re: VFX code quality Hugh Aguilar <hughaguilar96@yahoo.com> - 2012-05-20 22:53 -0700
Re: VFX code quality Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-05-21 04:32 -0500
Re: VFX code quality "Elizabeth D. Rather" <erather@forth.com> - 2012-05-21 08:44 -1000
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Paul Rubin <no.email@nospam.invalid> - 2012-05-20 00:58 -0700
Re: I beleive that forth could supplant ruby and perl and python if it wanted to stephenXXX@mpeforth.com (Stephen Pelc) - 2012-05-20 15:09 +0000
Re: I beleive that forth could supplant ruby and perl and python if it wanted to "Rod Pemberton" <do_not_have@notemailntt.cmm> - 2012-05-18 07:20 -0400
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-05-18 10:22 -0500
Re: I beleive that forth could supplant ruby and perl and python if it wanted to "Rod Pemberton" <do_not_have@notemailntt.cmm> - 2012-05-18 22:09 -0400
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-05-19 04:20 -0500
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Albert van der Horst <albert@spenarnc.xs4all.nl> - 2012-05-19 13:19 +0000
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-05-17 18:33 -0500
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Hugh Aguilar <hughaguilar96@yahoo.com> - 2012-05-18 01:49 -0700
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Paul Rubin <no.email@nospam.invalid> - 2012-05-18 07:59 -0700
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-05-18 10:32 -0500
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Bernd Paysan <bernd.paysan@gmx.de> - 2012-05-20 17:24 +0200
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Paul Rubin <no.email@nospam.invalid> - 2012-05-20 15:43 -0700
Re: I beleive that forth could supplant ruby and perl and python if it wanted to BruceMcF <agila61@netscape.net> - 2012-05-20 16:03 -0700
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Paul Rubin <no.email@nospam.invalid> - 2012-05-20 16:34 -0700
Re: I beleive that forth could supplant ruby and perl and python if it wanted to BruceMcF <agila61@netscape.net> - 2012-05-20 17:02 -0700
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-05-21 04:46 -0500
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Paul Rubin <no.email@nospam.invalid> - 2012-05-21 08:33 -0700
Re: I beleive that forth could supplant ruby and perl and python if it wanted to BruceMcF <agila61@netscape.net> - 2012-05-21 12:10 -0700
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-05-21 04:40 -0500
address units (was: I beleive that forth could supplant ...) anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-05-21 14:40 +0000
Re: address units Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-05-21 10:07 -0500
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Albert van der Horst <albert@spenarnc.xs4all.nl> - 2012-05-21 10:59 +0000
Re: I beleive that forth could supplant ruby and perl and python if it wanted to anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-05-21 14:22 +0000
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Bernd Paysan <bernd.paysan@gmx.de> - 2012-05-18 00:43 +0200
Re: I beleive that forth could supplant ruby and perl and python if it wanted to vandys@vsta.org - 2012-05-17 23:10 +0000
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Doug Hoffman <glidedog@gmail.com> - 2012-05-17 19:24 -0400
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Andrew Haley <andrew29@littlepinkcloud.invalid> - 2012-05-17 18:38 -0500
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Albert van der Horst <albert@spenarnc.xs4all.nl> - 2012-05-17 22:30 +0000
Re: I beleive that forth could supplant ruby and perl and python if it wanted to BruceMcF <agila61@netscape.net> - 2012-05-17 10:59 -0700
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Jan Coombs <jan_2011-02@murray-microft.co.uk> - 2012-05-20 13:14 +0100
Re: I beleive that forth could supplant ruby and perl and python if it wanted to marko <marko@marko.marko> - 2012-05-18 11:46 +1000
Re: I beleive that forth could supplant ruby and perl and python if it wanted to "Elizabeth D. Rather" <erather@forth.com> - 2012-05-17 20:10 -1000
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Arnold Doray <invalid@invalid.com> - 2012-05-18 10:32 +0000
Re: I beleive that forth could supplant ruby and perl and python if it wanted to marko <marko@marko.marko> - 2012-05-18 21:27 +1000
Re: I beleive that forth could supplant ruby and perl and python if it wanted to Hugh Aguilar <hughaguilar96@yahoo.com> - 2012-05-18 22:58 -0700
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