Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > comp.lang.c > #156863
| From | Ben Bacarisse <ben.usenet@bsb.me.uk> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: arranging items in a array with a sorted pointer-list |
| Date | 2020-12-02 14:53 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <87h7p4w977.fsf@bsb.me.uk> (permalink) |
| References | (9 earlier) <1by2ii72fj.fsf@pfeifferfamily.net> <814ca073-ab14-42cc-8f14-3571078bb04an@googlegroups.com> <9YsxH.30679$Zh7.26119@fx04.iad> <87blfdxjmf.fsf@bsb.me.uk> <rq750a$h6h$1@dont-email.me> |
James Kuyper <jameskuyper@alumni.caltech.edu> writes:
> On 12/1/20 5:10 PM, Ben Bacarisse wrote:
>> scott@slp53.sl.home (Scott Lurndal) writes:
>>
>>> Dolores Filandro <dolfiland8@gmail.com> writes:
> ...
>>>> You need to throw const away with a cast
>>>> if you want to write the bsearch function in C.
> ...
>> bsearch's prototype includes const everywhere one might expect.
>
> void *bsearch(const void *key, const void *base,
> size_t nmemb, size_t size,
> int (*compar)(const void *, const void *));
>
>> There's
>> no apparent reason you'd have to cast away const to implement it.
>> Dolores Filandro is, quite likely, trolling.
>
> I'm pretty tired right now, so maybe I'm missing something obvious. If
> written in C, how would bsearch() go about returning a void* when it's
> arguments are const void*, without casting away const somewhere?
There are various ways, but as an old-timer, I like
void *remove_const(s) void *s; { return s; }
and in bsearch
return remove_const(ptr);
--
Ben.
Back to comp.lang.c | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
arranging items in a array with a sorted pointer-list Bonita Montero <Bonita.Montero@gmail.com> - 2020-11-28 11:00 +0100
Re: arranging items in a array with a sorted pointer-list Melzzzzz <Melzzzzz@zzzzz.com> - 2020-11-28 10:49 +0000
Re: arranging items in a array with a sorted pointer-list Bonita Montero <Bonita.Montero@gmail.com> - 2020-11-28 12:12 +0100
Re: arranging items in a array with a sorted pointer-list Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-11-28 03:21 -0800
Re: arranging items in a array with a sorted pointer-list Richard Damon <Richard@Damon-Family.org> - 2020-11-28 08:32 -0500
Re: arranging items in a array with a sorted pointer-list Bonita Montero <Bonita.Montero@gmail.com> - 2020-11-28 14:49 +0100
Re: arranging items in a array with a sorted pointer-list scott@slp53.sl.home (Scott Lurndal) - 2020-11-28 16:08 +0000
Re: arranging items in a array with a sorted pointer-list Bonita Montero <Bonita.Montero@gmail.com> - 2020-11-28 17:16 +0100
Re: arranging items in a array with a sorted pointer-list Bart <bc@freeuk.com> - 2020-11-28 16:23 +0000
Re: arranging items in a array with a sorted pointer-list Bonita Montero <Bonita.Montero@gmail.com> - 2020-11-28 17:35 +0100
Re: arranging items in a array with a sorted pointer-list "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2020-11-28 17:34 +0100
Re: arranging items in a array with a sorted pointer-list Bonita Montero <Bonita.Montero@gmail.com> - 2020-11-28 17:38 +0100
Re: arranging items in a array with a sorted pointer-list Richard Damon <Richard@Damon-Family.org> - 2020-11-28 13:03 -0500
Re: arranging items in a array with a sorted pointer-list Tim Woodall <news001@woodall.me.uk> - 2020-11-28 23:40 +0000
Re: arranging items in a array with a sorted pointer-list Dolores Filandro <dolfiland8@gmail.com> - 2020-12-23 13:06 -0800
Re: arranging items in a array with a sorted pointer-list Kaz Kylheku <563-365-8930@kylheku.com> - 2020-11-28 18:08 +0000
Re: arranging items in a array with a sorted pointer-list Bonita Montero <Bonita.Montero@gmail.com> - 2020-11-28 19:14 +0100
Re: arranging items in a array with a sorted pointer-list Kaz Kylheku <563-365-8930@kylheku.com> - 2020-11-28 19:14 +0000
Re: arranging items in a array with a sorted pointer-list Tim Woodall <news001@woodall.me.uk> - 2020-11-28 18:13 +0000
Re: arranging items in a array with a sorted pointer-list Siri Cruise <chine.bleu@yahoo.com> - 2020-11-28 17:16 -0800
Re: arranging items in a array with a sorted pointer-list Juha Nieminen <nospam@thanks.invalid> - 2020-11-29 09:41 +0000
Re: arranging items in a array with a sorted pointer-list Siri Cruise <chine.bleu@yahoo.com> - 2020-11-29 02:16 -0800
Re: arranging items in a array with a sorted pointer-list Kaz Kylheku <563-365-8930@kylheku.com> - 2020-11-29 18:32 +0000
Re: arranging items in a array with a sorted pointer-list Juha Nieminen <nospam@thanks.invalid> - 2020-11-30 09:01 +0000
Re: arranging items in a array with a sorted pointer-list Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-11-30 13:03 +0000
Re: arranging items in a array with a sorted pointer-list Kaz Kylheku <563-365-8930@kylheku.com> - 2020-11-30 20:46 +0000
Re: arranging items in a array with a sorted pointer-list scott@slp53.sl.home (Scott Lurndal) - 2020-11-30 21:03 +0000
Re: arranging items in a array with a sorted pointer-list Kaz Kylheku <563-365-8930@kylheku.com> - 2020-11-30 22:27 +0000
Re: arranging items in a array with a sorted pointer-list Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2020-11-30 18:14 -0700
Re: arranging items in a array with a sorted pointer-list James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-11-30 23:02 -0500
Re: arranging items in a array with a sorted pointer-list Dolores Filandro <dolfiland8@gmail.com> - 2020-11-30 20:12 -0800
Re: arranging items in a array with a sorted pointer-list scott@slp53.sl.home (Scott Lurndal) - 2020-12-01 15:04 +0000
Re: arranging items in a array with a sorted pointer-list Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-01 22:10 +0000
Re: arranging items in a array with a sorted pointer-list Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-01 22:25 +0000
Re: arranging items in a array with a sorted pointer-list Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-01 23:43 +0000
Re: arranging items in a array with a sorted pointer-list James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-12-01 23:25 -0500
Re: arranging items in a array with a sorted pointer-list Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-02 14:53 +0000
Re: arranging items in a array with a sorted pointer-list Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-02 07:03 -0800
Re: arranging items in a array with a sorted pointer-list Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-02 23:48 +0000
Re: arranging items in a array with a sorted pointer-list James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-12-02 11:13 -0500
Re: arranging items in a array with a sorted pointer-list Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-06 05:34 -0800
Re: arranging items in a array with a sorted pointer-list Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-02 16:25 +0000
Re: arranging items in a array with a sorted pointer-list Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-02 23:58 +0000
Re: arranging items in a array with a sorted pointer-list Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-03 21:16 -0800
Re: arranging items in a array with a sorted pointer-list Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-01 07:33 +0000
Re: arranging items in a array with a sorted pointer-list Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-01 03:46 -0800
Re: arranging items in a array with a sorted pointer-list Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-01 17:15 +0000
Re: arranging items in a array with a sorted pointer-list Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-04 00:17 -0800
Re: arranging items in a array with a sorted pointer-list Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2020-12-01 10:07 -0800
Re: arranging items in a array with a sorted pointer-list Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-13 11:06 -0800
Re: arranging items in a array with a sorted pointer-list Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-01 07:04 -0800
Re: arranging items in a array with a sorted pointer-list Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-01 04:09 -0800
Re: arranging items in a array with a sorted pointer-list Kaz Kylheku <563-365-8930@kylheku.com> - 2020-11-29 18:28 +0000
Re: arranging items in a array with a sorted pointer-list dave_thompson_2@comcast.net - 2021-01-31 16:03 -0500
Re: arranging items in a array with a sorted pointer-list Richard Damon <Richard@Damon-Family.org> - 2020-11-29 14:01 -0500
Re: arranging items in a array with a sorted pointer-list Juha Nieminen <nospam@thanks.invalid> - 2020-11-30 09:05 +0000
Re: arranging items in a array with a sorted pointer-list Richard Damon <Richard@Damon-Family.org> - 2020-11-30 07:09 -0500
Re: arranging items in a array with a sorted pointer-list Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-11-30 13:06 +0000
Re: arranging items in a array with a sorted pointer-list Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-11-30 06:28 -0800
Re: arranging items in a array with a sorted pointer-list Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-11-30 15:50 +0000
Re: arranging items in a array with a sorted pointer-list James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-11-30 10:07 -0500
Re: arranging items in a array with a sorted pointer-list Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-11-30 15:26 +0000
Re: arranging items in a array with a sorted pointer-list James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-11-30 10:02 -0500
Re: arranging items in a array with a sorted pointer-list Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-11-29 12:32 +0000
Re: arranging items in a array with a sorted pointer-list Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-11-29 18:58 -0800
Re: arranging items in a array with a sorted pointer-list Bonita Montero <Bonita.Montero@gmail.com> - 2020-11-29 13:52 +0100
Re: arranging items in a array with a sorted pointer-list Dolores Filandro <dolfiland8@gmail.com> - 2020-12-23 13:56 -0800
Re: arranging items in a array with a sorted pointer-list Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-11-28 23:41 -0800
Re: arranging items in a array with a sorted pointer-list Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-05 12:23 +0100
Re: arranging items in a array with a sorted pointer-list Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-06 16:27 -0800
Re: arranging items in a array with a sorted pointer-list David Brown <david.brown@hesbynett.no> - 2020-12-07 11:17 +0100
Re: arranging items in a array with a sorted pointer-list Kaz Kylheku <563-365-8930@kylheku.com> - 2020-11-29 18:34 +0000
Re: arranging items in a array with a sorted pointer-list Bonita Montero <Bonita.Montero@gmail.com> - 2020-11-29 21:23 +0100
Re: arranging items in a array with a sorted pointer-list Juha Nieminen <nospam@thanks.invalid> - 2020-11-30 09:10 +0000
csiph-web