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Re: Presence of standard words (was: CfV: S>F and F>S)

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stephenXXX@mpeforth.com (Stephen Pelc) writes:
>On Sun, 05 Aug 2012 11:07:23 GMT, anton@mips.complang.tuwien.ac.at
>(Anton Ertl) wrote:
>
>>Arcane incantations or maybe less arcane standardized
>>incantations may be appropriate for embedded systems, but on a big
>>machine?  No.  And even on embedded systems the system could leave
>>unused words away, no need for arcane or standardized incantations.
>
>And for those systems that have a choice of (say) floating point
>packages. What does
>  load-wordset float
>actually do? You now have to specify which one.

No.  I would have a default, and an arcane incantation for selecting a
non-default package.  I would use a command-line option or the binary
name for the selection, but as long as there is a sensible default,
any other way for selecting the non-default should be fine; or, as
Bernd suggested, if the choice depends on the actual hardware, look at
what the actual hardware is.

> The same applies
>for embedded systems. For example, on an ARM Cortex (M0/M1, M3,
>and M4) there's a choice of three instruction sets, one with 32
>bit floats. If you really want to standardise all this stuff,
>you need to standardise real life. Nobody has ever managed that.

Let's see how other compilers do it: GCC does it through command-line
options: <http://gcc.gnu.org/onlinedocs/gcc/ARM-Options.html>, in
particular --mfloat-abi=soft/softfp/hard. "The default depends on the
specific target configuration."  GCC does not require arcane
incantations in the source code of the compiled program and
understands floats even if you don't specify --mfloat-abi.  

- 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 2012: http://www.euroforth.org/ef12/

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CfV: S>F and F>S anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-08-02 16:51 +0000
  Re: CfV: S>F and F>S mhx@iae.nl (Marcel Hendrix) - 2012-08-02 22:28 +0200
    Re: CfV: S>F and F>S Bernd Paysan <bernd.paysan@gmx.de> - 2012-08-02 23:36 +0200
  Re: CfV: S>F and F>S Krishna Myneni <krishna.myneni@ccreweb.org> - 2012-08-03 04:39 -0700
    Re: CfV: S>F and F>S Bernd Paysan <bernd.paysan@gmx.de> - 2012-08-03 19:56 +0200
      Re: CfV: S>F and F>S mhx@iae.nl (Marcel Hendrix) - 2012-08-03 21:18 +0200
        Re: CfV: S>F and F>S anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-08-04 09:50 +0000
          Re: CfV: S>F and F>S Bernd Paysan <bernd.paysan@gmx.de> - 2012-08-04 21:51 +0200
            Presence of standard words (was: CfV: S>F and F>S) anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-08-05 11:07 +0000
              Re: Presence of standard words (was: CfV: S>F and F>S) stephenXXX@mpeforth.com (Stephen Pelc) - 2012-08-05 11:34 +0000
                Re: Presence of standard words (was: CfV: S>F and F>S) Bernd Paysan <bernd.paysan@gmx.de> - 2012-08-05 13:59 +0200
                Re: Presence of standard words (was: CfV: S>F and F>S) anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2012-08-06 11:22 +0000
        Re: CfV: S>F and F>S Krishna Myneni <krishna.myneni@ccreweb.org> - 2012-08-04 04:50 -0700
          Re: CfV: S>F and F>S stephenXXX@mpeforth.com (Stephen Pelc) - 2012-08-04 12:30 +0000
            Re: CfV: S>F and F>S C G Montgomery <cgm@physics.utoledo.edu> - 2012-08-05 09:14 -0400
          Re: CfV: S>F and F>S Bernd Paysan <bernd.paysan@gmx.de> - 2012-08-04 21:47 +0200
      Re: CfV: S>F and F>S Krishna Myneni <krishna.myneni@ccreweb.org> - 2012-08-04 05:42 -0700

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