Re: real to rational number

From	Alex <alex@rivadpm.com>
Newsgroups	comp.lang.forth
Subject	Re: real to rational number
Date	2017-04-21 00:20 +0100
Organization	A noiseless patient Spider
Message-ID	<odbfhv$fj7$1@dont-email.me> (permalink)
References	(1 earlier) <xn0koxwci84sk9g004@nntp.aioe.org> <acd98288-1c49-4250-8af0-c3ef690e6ad2@googlegroups.com> <xn0koyorm8h4orx003@nntp.aioe.org> <69b22acc-b15b-47d4-96d6-0690edc03089@googlegroups.com> <453ddeb9-b675-4b1c-b0a1-35270421ba4a@googlegroups.com>

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On 4/20/2017 23:49, hughaguilar96@gmail.com wrote:
> On Thursday, April 20, 2017 at 3:11:16 PM UTC-7,
> krishna...@ccreweb.org wrote:
>> I think several of the quantities such as the numerator and
>> denominator are best kept as locals in this code. However,
>> assigning a local to the real number argument leads to a lot of
>> unneeded visual clutter.
> 
> One of the many blunders of ANS-Forth was to make locals with with TO
> --- it would have been much better to make the local provide an
> address and then use @ and ! on that address --- if the local is big
> enough to contain a double or a float, then D@ and D! as well as F@
> and F! can also be used on the local's address.

(direct quote) Gforth currently supports cells (W:, W^), doubles (D:, 
D^), floats (F:, F^) and characters (C:, C^) in two flavours: a 
value-flavoured local (defined with W:, D: etc.) produces its value and 
can be changed with TO. A variable-flavoured local (defined with W^ 
etc.) produces its address (which becomes invalid when the variable's 
scope is left).

https://www.complang.tuwien.ac.at/forth/gforth/Docs-html/Gforth-locals.html

You could write up an RfD to get this in the standard. Could, but won't.

> 
> Elizabeth Rather says: 
> ---------------------------------------------------------------- I
> hate locals :-) 
> ----------------------------------------------------------------
> 

As do I. I just put my Forth up on github, and you'll find very little 
use of locals. They're largely a distraction with a limited number of 
use cases.

-- 
Alex

Thread

real to rational number krishna.myneni@ccreweb.org - 2017-04-18 04:49 -0700
  Re: real to rational number lehs <skydda.barnen@gmail.com> - 2017-04-18 06:48 -0700
    Re: real to rational number krishna.myneni@ccreweb.org - 2017-04-18 19:09 -0700
      Re: real to rational number lehs <skydda.barnen@gmail.com> - 2017-04-18 22:53 -0700
        Re: real to rational number krishna.myneni@ccreweb.org - 2017-04-19 04:43 -0700
          Re: real to rational number rickman <gnuarm@gmail.com> - 2017-04-19 15:41 -0400
            Re: real to rational number Paul Rubin <no.email@nospam.invalid> - 2017-04-19 13:03 -0700
              Re: real to rational number "Rudy Velthuis" <newsgroups@rvelthuis.de> - 2017-04-20 17:26 +0000
              Re: real to rational number hughaguilar96@gmail.com - 2017-04-20 14:29 -0700
      Re: real to rational number "Rudy Velthuis" <newsgroups@rvelthuis.de> - 2017-04-19 23:44 +0000
        Re: real to rational number Paul Rubin <no.email@nospam.invalid> - 2017-04-19 19:30 -0700
          Re: real to rational number "Rudy Velthuis" <newsgroups@rvelthuis.de> - 2017-04-20 17:08 +0000
            Re: real to rational number Paul Rubin <no.email@nospam.invalid> - 2017-04-20 11:46 -0700
              Re: real to rational number "Rudy Velthuis" <newsgroups@rvelthuis.de> - 2017-04-21 09:47 +0000
            Re: real to rational number lehs <skydda.barnen@gmail.com> - 2017-04-20 20:49 -0700
    Re: real to rational number rickman <gnuarm@gmail.com> - 2017-04-19 15:36 -0400
      Re: real to rational number krishna.myneni@ccreweb.org - 2017-04-20 18:44 -0700
  Re: real to rational number hughaguilar96@gmail.com - 2017-04-18 07:06 -0700
    Re: real to rational number krishna.myneni@ccreweb.org - 2017-04-18 19:17 -0700
      Re: real to rational number Paul Rubin <no.email@nospam.invalid> - 2017-04-18 19:45 -0700
        Re: real to rational number krishna.myneni@ccreweb.org - 2017-04-18 19:57 -0700
        Re: real to rational number anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2017-04-19 05:35 +0000
      Re: real to rational number hughaguilar96@gmail.com - 2017-04-18 23:42 -0700
        Re: real to rational number krishna.myneni@ccreweb.org - 2017-04-19 04:53 -0700
          Re: real to rational number hughaguilar96@gmail.com - 2017-04-19 11:32 -0700
  Re: real to rational number minforth@arcor.de - 2017-04-18 08:23 -0700
    Re: real to rational number krishna.myneni@ccreweb.org - 2017-04-18 19:24 -0700
      Re: real to rational number Paul Rubin <no.email@nospam.invalid> - 2017-04-18 19:48 -0700
        Re: real to rational number krishna.myneni@ccreweb.org - 2017-04-18 20:01 -0700
  Re: real to rational number Paul Rubin <no.email@nospam.invalid> - 2017-04-18 19:39 -0700
    Re: real to rational number krishna.myneni@ccreweb.org - 2017-04-18 19:56 -0700
      Re: real to rational number Paul Rubin <no.email@nospam.invalid> - 2017-04-19 00:41 -0700
        Re: real to rational number krishna.myneni@ccreweb.org - 2017-04-19 04:48 -0700
        Re: real to rational number hughaguilar96@gmail.com - 2017-04-19 11:30 -0700
      Re: real to rational number albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2017-04-20 20:15 +0200
        Re: real to rational number krishna.myneni@ccreweb.org - 2017-04-20 15:23 -0700
          Re: real to rational number Paul Rubin <no.email@nospam.invalid> - 2017-04-20 18:52 -0700
  Re: real to rational number Pablo Hugo Reda <pabloreda@gmail.com> - 2017-04-18 19:58 -0700
    Re: real to rational number krishna.myneni@ccreweb.org - 2017-04-18 20:05 -0700
      Re: real to rational number Pablo Hugo Reda <pabloreda@gmail.com> - 2017-04-19 05:30 -0700
        Re: real to rational number Pablo Hugo Reda <pabloreda@gmail.com> - 2017-04-19 05:35 -0700
          Re: real to rational number Pablo Hugo Reda <pabloreda@gmail.com> - 2017-04-19 05:41 -0700
            Re: real to rational number krishna.myneni@ccreweb.org - 2017-04-19 19:39 -0700
  Re: real to rational number "Rudy Velthuis" <newsgroups@rvelthuis.de> - 2017-04-19 23:16 +0000
    Re: real to rational number krishna.myneni@ccreweb.org - 2017-04-19 19:42 -0700
      Re: real to rational number "Rudy Velthuis" <newsgroups@rvelthuis.de> - 2017-04-20 17:15 +0000
        Re: real to rational number krishna.myneni@ccreweb.org - 2017-04-20 15:11 -0700
          Re: real to rational number hughaguilar96@gmail.com - 2017-04-20 15:49 -0700
            Re: real to rational number Alex <alex@rivadpm.com> - 2017-04-21 00:20 +0100
              Re: real to rational number krishna.myneni@ccreweb.org - 2017-04-20 18:49 -0700
                Re: real to rational number The Beez <the.beez.speaks@gmail.com> - 2017-04-21 03:18 -0700
                Re: real to rational number krishna.myneni@ccreweb.org - 2017-04-21 18:39 -0700
                Re: real to rational number krishna.myneni@ccreweb.org - 2017-04-21 18:46 -0700
                Re: real to rational number Paul Rubin <no.email@nospam.invalid> - 2017-04-21 21:55 -0700
                Re: real to rational number krishna.myneni@ccreweb.org - 2017-04-22 08:33 -0700
                Re: real to rational number Paul Rubin <no.email@nospam.invalid> - 2017-04-22 13:35 -0700
                Re: real to rational number The Beez <the.beez.speaks@gmail.com> - 2017-04-24 00:58 -0700
                Re: real to rational number minforth@arcor.de - 2017-04-24 01:08 -0700
                Re: real to rational number minforth@arcor.de - 2017-04-23 02:28 -0700
                Re: real to rational number hughaguilar96@gmail.com - 2017-04-21 18:43 -0700
                rationalising  reality,   was Re: real to rational number Jan Coombs <jenfhaomndgfwutc@murmic.plus.com> - 2017-04-22 10:28 +0100
                Re: rationalising  reality,   was Re: real to rational number Mark Wills <markwills1970@gmail.com> - 2017-04-22 02:33 -0700
            Re: real to rational number krishna.myneni@ccreweb.org - 2017-04-20 16:22 -0700
              Re: real to rational number hughaguilar96@gmail.com - 2017-04-20 22:02 -0700
                Re: real to rational number Julian Fondren <julian.fondren@gmail.com> - 2017-04-21 00:12 -0700
                Re: real to rational number "Rudy Velthuis" <newsgroups@rvelthuis.de> - 2017-04-21 09:55 +0000
                Re: real to rational number hughaguilar96@gmail.com - 2017-04-25 10:52 -0700
                Re: real to rational number "Rudy Velthuis" <newsgroups@rvelthuis.de> - 2017-04-29 03:16 +0000
              Re: real to rational number "Rudy Velthuis" <newsgroups@rvelthuis.de> - 2017-04-21 09:52 +0000
              Re: real to rational number lehs <skydda.barnen@gmail.com> - 2017-04-21 05:35 -0700
                Re: real to rational number hughaguilar96@gmail.com - 2017-04-21 19:05 -0700
                Re: real to rational number The Beez <the.beez.speaks@gmail.com> - 2017-04-24 01:14 -0700
                Re: real to rational number Cecil Bayona <cbayona@cbayona.com> - 2017-04-24 11:31 -0500
                Re: real to rational number The Beez <the.beez.speaks@gmail.com> - 2017-04-25 00:52 -0700
                Re: real to rational number hughaguilar96@gmail.com - 2017-04-24 11:43 -0700
                Re: real to rational number The Beez <the.beez.speaks@gmail.com> - 2017-04-25 00:35 -0700
                Re: real to rational number The Beez <the.beez.speaks@gmail.com> - 2017-04-25 01:09 -0700
                Re: real to rational number minforth@arcor.de - 2017-04-26 01:55 -0700

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