[PD-dev] Compiling objects with gnu++14

[Thomas Grill]

Fwiw, on the external side of things, there is my hr library doing this:
http://puredata.info/Members/thomas/hr
best, Thomas

2015-06-02 22:44 GMT+02:00 Miller Puckette <msp at ucsd.edu>:

> With a pair of single-precision floating-point numbers you can specify
> arbitrary sums to about 47 bits of precision.  This is less than the
> 56 bits (I think) that a double precision number has, but it's enough,
> for instance, to specify locations in an hour-long soundfile at 96K down
> to less than 1/10000 of a sample.
>
> This can be done, for instance, by making the first of the two numbers
> represent exactly a mmultiple of 256 (up to about (256 * 16,000,000) and
> the
> second one a value less than 256 with 16 bits of fraction (plus 8 of
> integer
> part).
>
> This is in effect how the demo patch B16-long-varispeed work.s
>
> But it's tricky to do - I should really put an abstraction in extra to
> help people do it :)
>
> Miller
>
> On Tue, Jun 02, 2015 at 04:14:22PM -0400, William Huston wrote:
> > I so wish these double precision float patches could be rolled into the
> > main branch.
> >
> > This issue of indexing into long arrays is the biggest thing impacting my
> > PD joy I've found.
> >
> > Unless I'm missing something, the onset inlet to [tabread4~] is not an
> > acceptable solution, since it is only *added* to the value (address) on
> the
> > left inlet. So instead of first encountering noise at 150,000 bytes into
> > the array, we defer the problem to 300,000? This is just 7 seconds @
> > 44.1khz, and I want to work with audio files potentially 2 hrs long.
> >
> > Thanks Katja for your work on this.
> >
> > On Tuesday, June 2, 2015, Arshia Cont <Arshia.Cont at ircam.fr> wrote:
> > > Thank you Katja for the swift response! We will wait for that then.
> > >
> > > Any one running into run-time problems when compiling with C++11 or
> > C++14? We seem to have memory alignment issues… .
> > >
> > > Arshia Cont
> > >
> > >
> > >
> > >
> > >> On 02 Jun 2015, at 14:23, katja <katjavetter at gmail.com> wrote:
> > >>
> > >> On Tue, Jun 2, 2015 at 1:07 PM, Arshia Cont <Arshia.Cont at ircam.fr>
> wrote:
> > >>
> > >> [...]
> > >>
> > >>> My second question would be on double-precision audio externals.. I
> see
> > discussions on class_new64 but can’t seem to find any trace of it in
> > 0.46-6.. I dig into the archives to figure this one out first!
> > >>
> > >> In 2011 I made a set of patch files for vanilla pd 0.43 to enable
> > >> double precision builds (where t_float and t_sample are doubles). That
> > >> can be found here:
> > >>
> > >> https://github.com/pd-projects/pd-double
> > >>
> > >> You could try it out for evaluation but Miller wants to scrutinize,
> > >> test and improve the patch files before accepting them.
> > >>
> > >> Katja
> > >>
> > >
> > >
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-- 
Thomas Grill
http://grrrr.org
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