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Groups > comp.lang.c > #107127
| From | GOTHIER Nathan <nathan.gothier@gmail.com> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: C Compilers QoI |
| Date | 2017-03-27 01:28 +0200 |
| Organization | A noiseless patient Spider |
| Message-ID | <20170327012809.215939e00b64433d7b6e1239@gmail.com> (permalink) |
| References | (16 earlier) <ej0hvkFhe9iU11@mid.individual.net> <4c6653df-c17b-4a1f-bba6-bf52484451a1@googlegroups.com> <ejoj3cFrv02U6@mid.individual.net> <44758230-fa67-426c-8dd7-62cd7b01acb0@googlegroups.com> <ob9cfl$q3q$1@dont-email.me> |
On Sun, 26 Mar 2017 22:43:01 +0100
BartC <bc@freeuk.com> wrote:
> Surely the simplest way is to have a separate INPLACE version (int n
> param omitted to avoid wrap):
>
> void add_vector(float *result, float *a, float *b); // result=a+b
> void iadd_vector(float *a, float *b); // a+=b
I would rather reserve a static buffer to process the calculation such as:
struct vt
{
double vt_cx;
double vt_cy;
double vt_cz;
};
struct vt vecbuf;
struct vt *vecsum(struct vt *v1, struct vt *v2)
{
vecbuf.vt_cx = v1->vt_cx;
vecbuf.vt_cy = v1->vt_cy;
vecbuf.vt_cz = v1->vt_cz;
vecbuf.vt_cx += v2->vt_cx;
vecbuf.vt_cy += v2->vt_cy;
vecbuf.vt_cz += v2->vt_cz;
return &vecbuf;
};
struct vt u = {123.456, 456.789, 789.123};
struct vt v = {147.258, 258.369, 369.147};
struct vt w = *vecsum(&u, &v);
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C Compilers QoI BartC <bc@freeuk.com> - 2017-03-14 13:01 +0000
Re: C Compilers QoI mark.bluemel@gmail.com - 2017-03-14 06:16 -0700
Re: C Compilers QoI already5chosen@yahoo.com - 2017-03-14 06:42 -0700
Re: C Compilers QoI "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-03-14 06:56 -0700
Re: C Compilers QoI BartC <bc@freeuk.com> - 2017-03-14 15:58 +0000
Re: C Compilers QoI "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-03-14 09:22 -0700
Re: C Compilers QoI scott@slp53.sl.home (Scott Lurndal) - 2017-03-14 16:54 +0000
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-14 10:24 -0700
Re: C Compilers QoI scott@slp53.sl.home (Scott Lurndal) - 2017-03-14 17:58 +0000
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-14 14:12 -0700
Re: C Compilers QoI Robert Wessel <robertwessel2@yahoo.com> - 2017-03-14 16:34 -0500
Re: C Compilers QoI Robert Wessel <robertwessel2@yahoo.com> - 2017-03-14 17:36 -0500
Re: C Compilers QoI BartC <bc@freeuk.com> - 2017-03-14 23:06 +0000
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-14 16:20 -0700
Re: C Compilers QoI antispam@math.uni.wroc.pl - 2017-03-15 02:32 +0000
Re: C Compilers QoI BartC <bc@freeuk.com> - 2017-03-15 12:49 +0000
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-15 11:56 -0700
Re: C Compilers QoI BartC <bc@freeuk.com> - 2017-03-15 23:09 +0000
Re: C Compilers QoI scott@slp53.sl.home (Scott Lurndal) - 2017-03-16 18:17 +0000
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-16 11:47 -0700
Re: C Compilers QoI Ian Collins <ian-news@hotmail.com> - 2017-03-17 07:50 +1300
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-16 12:59 -0700
Re: C Compilers QoI David Brown <david.brown@hesbynett.no> - 2017-03-16 21:24 +0100
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-16 14:23 -0700
Re: C Compilers QoI Ian Collins <ian-news@hotmail.com> - 2017-03-17 11:30 +1300
Re: C Compilers QoI Ian Collins <ian-news@hotmail.com> - 2017-03-17 11:38 +1300
Re: C Compilers QoI Gareth Owen <gwowen@gmail.com> - 2017-03-17 05:07 +0000
Re: C Compilers QoI Ian Collins <ian-news@hotmail.com> - 2017-03-17 20:26 +1300
Re: C Compilers QoI Gareth Owen <gwowen@gmail.com> - 2017-03-17 07:59 +0000
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-16 16:14 -0700
Re: C Compilers QoI Robert Wessel <robertwessel2@yahoo.com> - 2017-03-16 22:54 -0500
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-17 09:01 -0700
Re: C Compilers QoI Ian Collins <ian-news@hotmail.com> - 2017-03-26 14:16 +1300
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-26 14:19 -0700
Re: C Compilers QoI BartC <bc@freeuk.com> - 2017-03-26 22:43 +0100
Re: C Compilers QoI GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-27 01:28 +0200
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-26 22:07 -0700
Re: C Compilers QoI BartC <bc@freeuk.com> - 2017-03-27 11:28 +0100
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-27 07:38 -0700
Re: C Compilers QoI BartC <bc@freeuk.com> - 2017-03-27 16:23 +0100
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-27 08:55 -0700
Re: C Compilers QoI BartC <bc@freeuk.com> - 2017-03-27 17:01 +0100
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-27 10:03 -0700
Re: C Compilers QoI GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-27 17:58 +0200
Re: C Compilers QoI already5chosen@yahoo.com - 2017-03-27 03:54 -0700
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-27 08:46 -0700
Re: C Compilers QoI scott@slp53.sl.home (Scott Lurndal) - 2017-03-27 17:47 +0000
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-27 11:48 -0700
Re: C Compilers QoI Robert Wessel <robertwessel2@yahoo.com> - 2017-03-27 15:37 -0500
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-27 14:46 -0700
Re: C Compilers QoI Robert Wessel <robertwessel2@yahoo.com> - 2017-03-27 20:28 -0500
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-28 01:18 -0700
Re: C Compilers QoI Robert Wessel <robertwessel2@yahoo.com> - 2017-03-28 18:24 -0500
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-29 07:40 -0700
Re: C Compilers QoI David Brown <david.brown@hesbynett.no> - 2017-03-29 17:05 +0200
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-29 11:07 -0700
Re: C Compilers QoI antispam@math.uni.wroc.pl - 2017-03-31 04:04 +0000
Re: C Compilers QoI bartc <bc@freeuk.com> - 2017-03-31 10:53 +0100
Re: C Compilers QoI Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-03-31 07:35 -0700
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-31 08:07 -0700
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-31 07:54 -0700
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-31 07:43 -0700
Re: C Compilers QoI Ian Collins <ian-news@hotmail.com> - 2017-03-17 11:21 +1300
Re: C Compilers QoI Ian Collins <ian-news@hotmail.com> - 2017-03-17 11:24 +1300
Re: C Compilers QoI BartC <bc@freeuk.com> - 2017-03-16 22:15 +0000
Re: C Compilers QoI scott@slp53.sl.home (Scott Lurndal) - 2017-03-17 12:31 +0000
Re: C Compilers QoI already5chosen@yahoo.com - 2017-03-16 15:24 -0700
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-16 16:03 -0700
Re: C Compilers QoI scott@slp53.sl.home (Scott Lurndal) - 2017-03-17 12:39 +0000
Re: C Compilers QoI already5chosen@yahoo.com - 2017-03-17 08:27 -0700
Re: C Compilers QoI antispam@math.uni.wroc.pl - 2017-03-16 01:35 +0000
Re: C Compilers QoI BartC <bc@freeuk.com> - 2017-03-16 02:18 +0000
Re: C Compilers QoI antispam@math.uni.wroc.pl - 2017-03-18 00:45 +0000
Re: C Compilers QoI BartC <bc@freeuk.com> - 2017-03-18 13:12 +0000
Re: C Compilers QoI antispam@math.uni.wroc.pl - 2017-03-18 20:31 +0000
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-18 17:31 -0700
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-16 09:22 -0700
Re: C Compilers QoI Nick Bowler <nbowler@draconx.ca> - 2017-03-24 16:13 +0000
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-24 12:32 -0700
Re: C Compilers QoI Robert Wessel <robertwessel2@yahoo.com> - 2017-03-24 22:13 -0500
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-25 13:05 -0700
Re: C Compilers QoI Robert Wessel <robertwessel2@yahoo.com> - 2017-03-27 15:44 -0500
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-27 14:51 -0700
Re: C Compilers QoI Robert Wessel <robertwessel2@yahoo.com> - 2017-03-27 20:31 -0500
Re: C Compilers QoI BartC <bc@freeuk.com> - 2017-03-14 17:26 +0000
Re: C Compilers QoI Andrew Haley <andrew29@littlepinkcloud.invalid> - 2017-03-15 12:02 -0500
Re: C Compilers QoI David Brown <david.brown@hesbynett.no> - 2017-03-14 15:00 +0100
Re: C Compilers QoI already5chosen@yahoo.com - 2017-03-14 07:36 -0700
Re: C Compilers QoI David Brown <david.brown@hesbynett.no> - 2017-03-14 15:57 +0100
Re: C Compilers QoI Andrey Tarasevich <andreytarasevich@hotmail.com> - 2017-03-14 08:11 -0700
Re: C Compilers QoI BGB <cr88192@hotmail.com> - 2017-03-29 23:51 -0500
Re: C Compilers QoI BartC <bc@freeuk.com> - 2017-03-14 15:28 +0000
Re: C Compilers QoI David Brown <david.brown@hesbynett.no> - 2017-03-14 21:41 +0100
Re: C Compilers QoI Keith Thompson <kst-u@mib.org> - 2017-03-14 09:26 -0700
Re: C Compilers QoI BartC <bc@freeuk.com> - 2017-03-14 18:23 +0000
Re: C Compilers QoI Keith Thompson <kst-u@mib.org> - 2017-03-14 12:05 -0700
Re: C Compilers QoI already5chosen@yahoo.com - 2017-03-14 09:35 -0700
Re: C Compilers QoI BartC <bc@freeuk.com> - 2017-03-14 17:08 +0000
Re: C Compilers QoI already5chosen@yahoo.com - 2017-03-14 10:24 -0700
Re: C Compilers QoI BartC <bc@freeuk.com> - 2017-03-14 17:34 +0000
Re: C Compilers QoI already5chosen@yahoo.com - 2017-03-14 11:55 -0700
Re: C Compilers QoI BartC <bc@freeuk.com> - 2017-03-14 19:03 +0000
Re: C Compilers QoI BartC <bc@freeuk.com> - 2017-03-14 19:06 +0000
Re: C Compilers QoI already5chosen@yahoo.com - 2017-03-14 12:10 -0700
Re: C Compilers QoI BartC <bc@freeuk.com> - 2017-03-14 21:14 +0000
Re: C Compilers QoI already5chosen@yahoo.com - 2017-03-14 14:42 -0700
Re: C Compilers QoI supercat@casperkitty.com - 2017-03-14 14:53 -0700
Re: C Compilers QoI BartC <bc@freeuk.com> - 2017-03-14 23:20 +0000
Re: C Compilers QoI antispam@math.uni.wroc.pl - 2017-03-15 02:43 +0000
Re: C Compilers QoI jacobnavia <jacob@jacob.remcomp.fr> - 2017-03-14 19:39 +0100
Re: C Compilers QoI BartC <bc@freeuk.com> - 2017-03-14 19:10 +0000
Re: C Compilers QoI antispam@math.uni.wroc.pl - 2017-03-14 19:29 +0000
Re: C Compilers QoI Noob <root@127.0.0.1> - 2017-03-15 09:27 +0100
Re: C Compilers QoI ed_davis2@yahoo.com - 2017-03-16 15:10 -0700
Re: C Compilers QoI BartC <bc@freeuk.com> - 2017-03-16 23:19 +0000
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