Re: Making more of the C standard library mandatory for freestanding implementations

From	Grant Edwards <invalid@invalid.invalid>
Newsgroups	comp.std.c, comp.arch.embedded
Subject	Re: Making more of the C standard library mandatory for freestanding implementations
Date	2020-05-06 16:47 +0000
Organization	PANIX Public Access Internet and UNIX, NYC
Message-ID	<r8upn1$89t$1@reader2.panix.com> (permalink)
References	<r8uo2j$4l2$1@solani.org>

Cross-posted to 2 groups.

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On 2020-05-06, Philipp Klaus Krause <pkk@spth.de> wrote:

> In C, most of the standard library is mandatory for hosted
> implementations only, not for freestadning implementations.  Still,
> I see many functions, such as memcpy() and abs() often used in
> programs for embedded systems, and see no obstacles to implementing
> them even on small systems.
>
> Should more of the standard library become mandatory for
> freestanding implementations?

No.  Just No.  For use on small embedded systems, there must be a
"bare metal" option that requires no standard library functions.

> For string.h, I have written a first draft of a proposal:
>
> http://www.colecovision.eu/stuff/proposal-freestanding-string.html
>
> What do you think of it?
>
> Do you see any reason those could not be provided on some C
> implementation?

Memory size.

> Which further functions would you like to become mandatory for
> freestanding C implementations?

NONE.  Freestanding, should remain freestanding.  If you want to
define some "semi-hosted" spec, that's fine.  Leave freestanding
alone.

--
Grant

Thread

Making more of the C standard library mandatory for freestanding implementations Philipp Klaus Krause <pkk@spth.de> - 2020-05-06 18:19 +0200
  Re: Making more of the C standard library mandatory for freestanding implementations Grant Edwards <invalid@invalid.invalid> - 2020-05-06 16:47 +0000
    Re: Making more of the C standard library mandatory for freestanding implementations Philipp Klaus Krause <pkk@spth.de> - 2020-05-06 19:16 +0200
      Re: Making more of the C standard library mandatory for freestanding implementations Grant Edwards <invalid@invalid.invalid> - 2020-05-06 18:10 +0000
        Re: Making more of the C standard library mandatory for freestanding implementations James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-05-06 15:10 -0400
          Re: Making more of the C standard library mandatory for freestanding implementations Richard Damon <Richard@Damon-Family.org> - 2020-05-06 16:08 -0400
            Re: Making more of the C standard library mandatory for freestanding implementations Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2020-05-06 13:22 -0700
              Re: Making more of the C standard library mandatory for freestanding implementations Richard Damon <Richard@Damon-Family.org> - 2020-05-06 22:29 -0400
                Re: Making more of the C standard library mandatory for freestanding implementations David Brown <david.brown@hesbynett.no> - 2020-05-07 15:43 +0200
              Re: Making more of the C standard library mandatory for freestanding implementations Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-05-07 06:08 -0700
            Re: Making more of the C standard library mandatory for freestanding implementations Philipp Klaus Krause <pkk@spth.de> - 2020-05-06 22:36 +0200
              Re: Making more of the C standard library mandatory for freestanding implementations Grant Edwards <invalid@invalid.invalid> - 2020-05-06 20:57 +0000
              Re: Making more of the C standard library mandatory for freestanding implementations Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2020-05-06 23:25 +0200
                Re: Making more of the C standard library mandatory for freestanding implementations Grant Edwards <invalid@invalid.invalid> - 2020-05-06 21:34 +0000
                Re: Making more of the C standard library mandatory for freestanding implementations Philipp Klaus Krause <pkk@spth.de> - 2020-05-07 10:17 +0200
                Re: Making more of the C standard library mandatory for freestanding implementations Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2020-05-07 18:45 +0300
                Re: Making more of the C standard library mandatory for freestanding implementations Philipp Klaus Krause <pkk@spth.de> - 2020-05-07 10:16 +0200
                Re: Making more of the C standard library mandatory for freestanding implementations Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2020-05-07 21:39 +0200
                Re: Making more of the C standard library mandatory for freestanding implementations Philipp Klaus Krause <pkk@spth.de> - 2020-05-07 21:44 +0200
                Re: Making more of the C standard library mandatory for freestanding implementations Paul Rubin <no.email@nospam.invalid> - 2020-05-07 12:54 -0700
                Re: Making more of the C standard library mandatory for freestanding implementations Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-05-08 08:38 -0700
                Re: Making more of the C standard library mandatory for freestanding implementations Philipp Klaus Krause <pkk@spth.de> - 2020-05-08 21:30 +0200
                Re: Making more of the C standard library mandatory for freestanding implementations Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-05-30 02:04 -0700
                Re: Making more of the C standard library mandatory for freestanding implementations Philipp Klaus Krause <pkk@spth.de> - 2020-08-04 10:58 +0200
                Re: Making more of the C standard library mandatory for freestanding implementations Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2020-08-04 07:35 -0700
          Re: Making more of the C standard library mandatory for freestanding implementations Philipp Klaus Krause <pkk@spth.de> - 2020-05-06 22:34 +0200
            Re: Making more of the C standard library mandatory for freestanding implementations upsidedown@downunder.com - 2020-05-07 09:13 +0300
            Re: Making more of the C standard library mandatory for freestanding implementations Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2020-05-07 18:47 +0300
              Re: Making more of the C standard library mandatory for freestanding implementations Grant Edwards <invalid@invalid.invalid> - 2020-05-07 15:51 +0000
                Re: Making more of the C standard library mandatory for freestanding implementations Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2020-05-08 10:09 +0300
    Re: Making more of the C standard library mandatory for freestanding implementations Florian Weimer <fw@deneb.enyo.de> - 2020-05-08 18:48 +0200
      Re: Making more of the C standard library mandatory for freestanding implementations Andrew Smallshaw <andrews@sdf.org> - 2020-05-08 17:01 +0000
        Re: Making more of the C standard library mandatory for freestanding implementations Philipp Klaus Krause <pkk@spth.de> - 2020-05-08 20:05 +0200
  Re: Making more of the C standard library mandatory for freestanding implementations upsidedown@downunder.com - 2020-05-07 08:59 +0300
  Re: Making more of the C standard library mandatory for freestanding implementations Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-05-07 06:14 -0700
    Re: Making more of the C standard library mandatory for freestanding implementations Philipp Klaus Krause <pkk@spth.de> - 2020-05-07 21:38 +0200
      Re: Making more of the C standard library mandatory for freestanding implementations Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-05-08 12:03 -0700
        Re: Making more of the C standard library mandatory for freestanding implementations Philipp Klaus Krause <pkk@spth.de> - 2020-05-08 21:15 +0200
        Re: Making more of the C standard library mandatory for freestanding implementations Philipp Klaus Krause <pkk@spth.de> - 2020-05-08 21:27 +0200
          Re: Making more of the C standard library mandatory for freestanding implementations Jakob Bohm <jb-usenet@wisemo.com.invalid> - 2020-05-15 15:13 +0200
        Re: Making more of the C standard library mandatory for freestanding implementations David Brown <david.brown@hesbynett.no> - 2020-05-09 00:25 +0200

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