On Thu, Oct 15, 2015 at 12:41 PM, Ganesh Ajjanagadde <gajja...@mit.edu> wrote: > On Thu, Oct 15, 2015 at 6:37 AM, Hendrik Leppkes <h.lepp...@gmail.com> wrote: >> On Thu, Oct 15, 2015 at 12:34 PM, Ganesh Ajjanagadde <gajja...@mit.edu> >> wrote: >>> On Wed, Oct 14, 2015 at 6:50 AM, Hendrik Leppkes <h.lepp...@gmail.com> >>> wrote: >>>> On Wed, Oct 14, 2015 at 12:37 PM, Ganesh Ajjanagadde <gajja...@mit.edu> >>>> wrote: >>>>> On Wed, Oct 14, 2015 at 5:01 AM, Matt Oliver <protogo...@gmail.com> wrote: >>>>>> On 14 October 2015 at 09:46, Ganesh Ajjanagadde <gajja...@mit.edu> wrote: >>>>>> >>>>>>> On Tue, Oct 13, 2015 at 9:12 AM, Ganesh Ajjanagadde <gajja...@mit.edu> >>>>>>> wrote: >>>>>>> > On Tue, Oct 13, 2015 at 4:02 AM, Clément Bœsch <u...@pkh.me> wrote: >>>>>>> >> On Tue, Oct 13, 2015 at 09:25:03AM +0200, Paul B Mahol wrote: >>>>>>> >> [...] >>>>>>> >>> What about fmax/FFMAX? >>>>>>> >> >>>>>>> >> Feel free to try that out (it looks OT regarding the patch), but >>>>>>> >> fmax() >>>>>>> >> looks glibc specific >>>>>>> >>>>>>> Seems they are actually ISO: >>>>>>> http://en.cppreference.com/w/c/numeric/math/fmax >>>>>>> >>>>>>> Can someone check availability on all of our platforms of interest >>>>>>> (e.g Microsoft)? >>>>>>> >>>>>> >>>>>> fmax and fmin are only available on msvc using 2013 or newer. Currently >>>>>> the >>>>>> only msvc version without fmax/fmin that FFmpeg supports is 2012 which >>>>>> uses >>>>>> the C99 to C89 converter. >>>>> >>>>> And does that converter handle fmin, fmax, fmaxf, etc? >>>>> Does it need patches? >>>>> Bottom line: are they safe to use at the moment? >>>>> >>>> >>>> No, they are not. >>>> >>>> One thing I don't understand - why are we bothering with something >>>> that at best comes out as "same speed" from tests performed? (low >>>> number of runs are irrelevant as they are not statistically >>>> significant). >>> >>> Because if you actually bothered to run my random numbers benchmark >>> instead of posting with no basis claiming "statistical >>> insignificance", or for that matter matter bothered to actually check >>> the libc link, or even looked at Clement's asm test - you would >>> finally understand. >>> >>> Also, what needs to be done to get fmax, fmin, etc into the converter? >>> >> >> The converter doesn't provide any functions, just alters the syntax if >> needed. Functions not available cannot be fixed that way, sorry. > > Thanks for clarifying. I am still confused: how do we have llabs then? > Per MSDN, this was not present in MSVC 2012, and was added in MSVC > 2013 (looks like a similar case to fabs, fabsf). >
Docs appear to be wrong in that particular case. It happens sometimes that functions are available but didn't get added to the docs. - Hendrik _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel