Re: Reinventing the wheel.

Subject	Re: Reinventing the wheel.
Newsgroups	comp.lang.c
References	(5 earlier) <YnT3G.686509$ek.295064@fx48.iad> <f9663730-3a09-431f-abf7-5a293d5b1358@googlegroups.com> <0EZ3G.69467$Pj7.11832@fx14.iad> <rUZ3G.72279$Bz7.39863@fx24.iad> <60a031e2-c063-42a7-a0e9-f478eea49ca3@googlegroups.com>
From	Richard Damon <Richard@Damon-Family.org>
Message-ID	<Y_f4G.203450$Up2.106967@fx44.iad> (permalink)
Organization	Forte - www.forteinc.com
Date	2020-02-22 15:16 -0500

Show all headers | View raw

On 2/22/20 1:33 PM, already5chosen@yahoo.com wrote:
> On Saturday, February 22, 2020 at 1:41:19 AM UTC+2, Richard Damon wrote:
>> On 2/21/20 6:23 PM, Scott Lurndal wrote:
>>> James Kuyper <jameskuyper@alumni.caltech.edu> writes:
>>>> Scott Lurndal wrote:
>>>>> In the several days this discussion has been in process,
>>>
>>>>
>>>> Not particularly. So long as it's not significantly slower
>>>> than the algorithm it will be replacing (which uses C++ and
>>>> std::map<>), I should be fine - I just want to be sure that
>>>> it will be no slower. I'm primarily interested in ease of
>>>> implementation. The Subject of this thread was chosen to
>>>> express my annoyance at having to reimplement something
>>>> that has been implemented and thoroughly tested many times
>>>> by many other people.
>>>
>>> To that end, if you're able to use a gnu C library (glibc),
>>> there's tree, hash and binary search capabilities available
>>> using 'tsearch et. alia', 'bsearch et. alia' and 'hsearch et alia'.
>>>
>>
>> And to meet the 'self contained' requirement, you just need to add the
>> library source code to your project (and follow the licensing restrictions)
> 
> In case of glibc, I think that using it in source form will turn its license from LGPL into something like GPL2, if not GPL3.
> I don't know if it is acceptable for James's project, but would guess that the answer is "No".
> 
> Anyway, glibc hash support is ASCIIZ string-oriented. Of course, it is possible to convert a pair of 16-bit signed integers to ASCIIZ, but it's unlikely that it would be great for performance.
> And the absence of control over hash function algorithm means that one can't optimize it for a common case.
> 

One reason I included the comment. It may still be possible to be able 
to use the 'out' of LGPL if even though the source code is in the 
project tree, it is separately built and linked into the code in a 
manner conforming to the LGPL license.

The GPL 'infection' also could be used as ammo to talk to the PHB that 
added the 'self-contained' requirement and ask if it REALLY is needed.

Thread

Reinventing the wheel. James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-02-20 10:33 -0800
  Re: Reinventing the wheel. Bonita Montero <Bonita.Montero@gmail.com> - 2020-02-20 20:04 +0100
    Re: Reinventing the wheel. Bart <bc@freeuk.com> - 2020-02-20 19:11 +0000
      Re: Reinventing the wheel. David Brown <david.brown@hesbynett.no> - 2020-02-20 21:50 +0100
      Re: Reinventing the wheel. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-02-20 21:01 +0000
        Re: Reinventing the wheel. Bart <bc@freeuk.com> - 2020-02-20 21:34 +0000
          Re: Reinventing the wheel. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-02-20 22:56 +0000
            Re: Reinventing the wheel. Bart <bc@freeuk.com> - 2020-02-21 00:34 +0000
            Re: Reinventing the wheel. David Brown <david.brown@hesbynett.no> - 2020-02-21 09:40 +0100
            Re: Reinventing the wheel. Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-02-22 14:06 -0800
  Re: Reinventing the wheel. David Brown <david.brown@hesbynett.no> - 2020-02-20 20:06 +0100
    Re: Reinventing the wheel. Bonita Montero <Bonita.Montero@gmail.com> - 2020-02-20 20:08 +0100
    Re: Reinventing the wheel. James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-02-20 12:46 -0800
      Re: Reinventing the wheel. already5chosen@yahoo.com - 2020-02-20 13:55 -0800
        Re: Reinventing the wheel. James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-02-21 00:12 -0500
          Re: Reinventing the wheel. scott@slp53.sl.home (Scott Lurndal) - 2020-02-21 16:16 +0000
            Re: Reinventing the wheel. James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-02-21 09:20 -0800
              Re: Reinventing the wheel. jadill33@gmail.com - 2020-02-21 10:07 -0800
              Re: Reinventing the wheel. scott@slp53.sl.home (Scott Lurndal) - 2020-02-21 23:23 +0000
                Re: Reinventing the wheel. Richard Damon <Richard@Damon-Family.org> - 2020-02-21 18:41 -0500
                Re: Reinventing the wheel. scott@slp53.sl.home (Scott Lurndal) - 2020-02-22 16:20 +0000
                Re: Reinventing the wheel. already5chosen@yahoo.com - 2020-02-22 10:33 -0800
                Re: Reinventing the wheel. James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-02-22 15:00 -0500
                Re: Reinventing the wheel. Richard Damon <Richard@Damon-Family.org> - 2020-02-22 15:16 -0500
          Re: Reinventing the wheel. James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-02-21 08:42 -0800
            Re: Reinventing the wheel. David Brown <david.brown@hesbynett.no> - 2020-02-21 18:23 +0100
      Re: Reinventing the wheel. Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-02-22 17:06 -0800
        Re: Reinventing the wheel. James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-02-23 06:18 -0800
  Re: Reinventing the wheel. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-02-20 21:14 +0000
    Re: Reinventing the wheel. James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-02-21 00:24 -0500
  Re: Reinventing the wheel. "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2020-02-20 13:15 -0800
    Re: Reinventing the wheel. James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-02-20 13:44 -0800
      Re: Reinventing the wheel. "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2020-02-20 14:21 -0800
        Re: Reinventing the wheel. "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2020-02-20 14:22 -0800
  Re: Reinventing the wheel. Robert Wessel <robertwessel2@yahoo.com> - 2020-02-20 15:19 -0600
    Re: Reinventing the wheel. James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-02-21 00:28 -0500
  Re: Reinventing the wheel. "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2020-02-20 23:27 -0800
    Re: Reinventing the wheel. "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2020-02-20 23:52 -0800
  Re: Reinventing the wheel. jadill33@gmail.com - 2020-02-21 08:20 -0800
  Re: Reinventing the wheel. Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-02-22 03:15 -0800
    Re: Reinventing the wheel. already5chosen@yahoo.com - 2020-02-22 10:38 -0800
      Re: Reinventing the wheel. Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-02-24 02:50 -0800
        Re: Reinventing the wheel. Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-02-24 16:36 +0000
          Re: Reinventing the wheel. Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-02-25 04:08 -0800
            Re: Reinventing the wheel. David Brown <david.brown@hesbynett.no> - 2020-02-25 13:42 +0100
              Re: Reinventing the wheel. already5chosen@yahoo.com - 2020-02-25 05:00 -0800
                Re: Reinventing the wheel. David Brown <david.brown@hesbynett.no> - 2020-02-26 10:53 +0100
          Re: Reinventing the wheel. chad <cdalten@gmail.com> - 2020-02-26 06:51 -0800
    Re: Reinventing the wheel. Anton Shepelev <anton.txt@gmail.com> - 2020-02-24 22:40 +0300
      Re: Reinventing the wheel. Robert Wessel <robertwessel2@yahoo.com> - 2020-02-24 16:37 -0600
        Re: Reinventing the wheel. Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-02-25 01:37 -0800
          Re: Reinventing the wheel. Anton Shepelev <anton.txt@g{oogle}mail.com> - 2020-02-25 13:07 +0300
            Re: Reinventing the wheel. already5chosen@yahoo.com - 2020-02-25 04:50 -0800
              Re: Reinventing the wheel. Anton Shepelev <anton.txt@g{oogle}mail.com> - 2020-02-25 19:30 +0300
                Re: Reinventing the wheel. already5chosen@yahoo.com - 2020-02-25 08:43 -0800
                Re: Reinventing the wheel. Anton Shepelev <anton.txt@gmail.com> - 2020-02-29 01:25 +0300
              Re: Reinventing the wheel. Robert Wessel <robertwessel2@yahoo.com> - 2020-02-25 15:40 -0600
                Re: Reinventing the wheel. Anton Shepelev <anton.txt@g{oogle}mail.com> - 2020-02-26 13:40 +0300
            Re: Reinventing the wheel. James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-02-25 11:29 -0800
              Re: Reinventing the wheel. Anton Shepelev <anton.txt@g{oogle}mail.com> - 2020-02-26 13:47 +0300
                Re: Reinventing the wheel. James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-02-26 09:32 -0500
                Re: Reinventing the wheel. Anton Shepelev <anton.txt@g{oogle}mail.com> - 2020-02-26 21:26 +0300
  Re: Reinventing the wheel. "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2020-02-22 23:32 -0800
    Re: Reinventing the wheel. "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2020-03-07 22:22 -0800
      Re: Reinventing the wheel. "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2020-03-07 22:38 -0800

csiph-web