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Groups > comp.lang.c > #140334
| Subject | Re: Simple 2d C99 fractal plotter... |
|---|---|
| Newsgroups | comp.lang.c |
| References | (1 earlier) <iuY2E.451909$Fi6.364335@fx12.am4> <q2k7n0$gak$1@dont-email.me> <TZi3E.87684$nC1.54261@fx04.am4> <q2kj67$nkj$1@dont-email.me> <q2lbaj$o2m$3@dont-email.me> |
| From | Bart <bc@freeuk.com> |
| Message-ID | <Tvr3E.98534$AD1.55847@fx05.am4> (permalink) |
| Organization | virginmedia.com |
| Date | 2019-01-27 23:53 +0000 |
On 27/01/2019 22:28, Chris M. Thomasson wrote:
> On 1/27/2019 7:36 AM, David Brown wrote:
>> On 27/01/2019 15:13, Bart wrote:
>>> Actually there is something I overlooked completely, which is the
>>> printf that is called on every point.
> if (! (i % 256))
> {
> printf("rendering: %lu of %lu\r", i + 1, n);
> }
> }
> }
> _________________
>
> Removing this "pointless, in a sense... progress" output will greatly
> increase the speed of the fractal calculations. I just left it in there
> so I could see the damn progress. I should use a fflush(stdout) after
> each call to printf to make it even more inefficient. ;^)
Yeah, it's not really every point, but every 256th. Although that still
makes it dominate the run-time.
I tried a printf literally on every point, and it took 12 minutes,
compared with 1-2 seconds without any printing.
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Simple 2d C99 fractal plotter... "Chris M. Thomasson" <ahh_f_it@crap.nothing> - 2019-01-25 14:24 -0800
Re: Simple 2d C99 fractal plotter... "Chris M. Thomasson " <ahh_f_it@crap.nothing> - 2019-01-25 15:11 -0800
Re: Simple 2d C99 fractal plotter... Eli the Bearded <*@eli.users.panix.com> - 2019-01-25 23:50 +0000
Re: Simple 2d C99 fractal plotter... "Chris M. Thomasson" <ahh_f_it@crap.nothing> - 2019-01-25 16:33 -0800
Re: Simple 2d C99 fractal plotter... Bart <bc@freeuk.com> - 2019-01-26 00:45 +0000
Re: Simple 2d C99 fractal plotter... "Chris M. Thomasson " <ahh_f_it@crap.nothing> - 2019-01-25 16:55 -0800
Re: Simple 2d C99 fractal plotter... Bart <bc@freeuk.com> - 2019-01-26 00:59 +0000
Re: Simple 2d C99 fractal plotter... Jorgen Grahn <grahn+nntp@snipabacken.se> - 2019-01-26 20:29 +0000
Re: Simple 2d C99 fractal plotter... Bart <bc@freeuk.com> - 2019-01-26 21:37 +0000
Re: Simple 2d C99 fractal plotter... Jorgen Grahn <grahn+nntp@snipabacken.se> - 2019-01-27 12:11 +0000
Re: Simple 2d C99 fractal plotter... Ben Bacarisse <ben.usenet@bsb.me.uk> - 2019-01-27 13:40 +0000
Re: Simple 2d C99 fractal plotter... Bart <bc@freeuk.com> - 2019-01-26 00:57 +0000
Re: Simple 2d C99 fractal plotter... "Chris M. Thomasson" <ahh_f_it@crap.nothing> - 2019-01-27 15:37 -0800
Re: Simple 2d C99 fractal plotter... Bart <bc@freeuk.com> - 2019-01-26 12:35 +0000
Re: Simple 2d C99 fractal plotter... David Brown <david.brown@hesbynett.no> - 2019-01-27 13:20 +0100
Re: Simple 2d C99 fractal plotter... Bart <bc@freeuk.com> - 2019-01-27 14:13 +0000
Re: Simple 2d C99 fractal plotter... David Brown <david.brown@hesbynett.no> - 2019-01-27 16:36 +0100
Re: Simple 2d C99 fractal plotter... "Chris M. Thomasson" <ahh_f_it@crap.nothing> - 2019-01-27 14:28 -0800
Re: Simple 2d C99 fractal plotter... Bart <bc@freeuk.com> - 2019-01-27 23:53 +0000
Re: Simple 2d C99 fractal plotter... "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-01-29 13:11 -0800
Re: Simple 2d C99 fractal plotter... Bart <bc@freeuk.com> - 2019-01-29 22:23 +0000
Re: Simple 2d C99 fractal plotter... "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-02-04 15:30 -0800
Re: Simple 2d C99 fractal plotter... Bart <bc@freeuk.com> - 2019-02-05 01:26 +0000
Re: Simple 2d C99 fractal plotter... Ian Collins <ian-news@hotmail.com> - 2019-02-05 16:14 +1300
Re: Simple 2d C99 fractal plotter... David Brown <david.brown@hesbynett.no> - 2019-02-05 11:38 +0100
Re: Simple 2d C99 fractal plotter... Bart <bc@freeuk.com> - 2019-02-05 11:14 +0000
Re: Simple 2d C99 fractal plotter... David Brown <david.brown@hesbynett.no> - 2019-02-05 14:35 +0100
Re: Simple 2d C99 fractal plotter... Bart <bc@freeuk.com> - 2019-02-05 15:06 +0000
Re: Simple 2d C99 fractal plotter... David Brown <david.brown@hesbynett.no> - 2019-02-05 17:02 +0100
Re: Simple 2d C99 fractal plotter... Bart <bc@freeuk.com> - 2019-02-05 19:07 +0000
Re: Simple 2d C99 fractal plotter... Ian Collins <ian-news@hotmail.com> - 2019-02-06 08:12 +1300
Re: Simple 2d C99 fractal plotter... Keith Thompson <kst-u@mib.org> - 2019-02-05 12:49 -0800
Re: Simple 2d C99 fractal plotter... David Brown <david.brown@hesbynett.no> - 2019-02-05 22:39 +0100
Re: Simple 2d C99 fractal plotter... Keith Thompson <kst-u@mib.org> - 2019-01-27 13:09 -0800
Re: Simple 2d C99 fractal plotter... Bart <bc@freeuk.com> - 2019-01-26 18:53 +0000
Re: Simple 2d C99 fractal plotter... "Chris M. Thomasson" <ahh_f_it@crap.nothing> - 2019-01-26 18:21 -0800
Re: Simple 2d C99 fractal plotter... "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-01-28 22:20 -0800
Re: Simple 2d C99 fractal plotter... "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-01-28 22:55 -0800
Re: Simple 2d C99 fractal plotter... "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-01-28 23:03 -0800
Re: Simple 2d C99 fractal plotter... "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-02-06 22:37 -0800
Re: Simple 2d C99 fractal plotter... "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-02-11 13:44 -0800
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