Am I crazy or did I hear some talk about 64bit for pd vanilla soon, maybe as early as 0.50-0?

cheers

Em dom, 16 de dez de 2018 às 11:37, hans w. koch hansw.koch@gmail.com escreveu:

and then there is also spaghettis: https://github.com/Spaghettis/Spaghettis which is double prec. but not as encompassing as purr data.

best hans

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Am 16.12.2018 um 13:16 schrieb Giulio Moro via Pd-list <

pd-list@lists.iem.at>:

...

It's been done this past summer for Purr-data/Pd-l2ork. Here is the

report: http://disis.music.vt.edu/pipermail/l2ork-dev/2018-August/002019.html

...

Best, Giulio

On Sunday, 16 December 2018, 11:29:25 GMT, Dario Sanfilippo <

sanfilippo.dario@gmail.com> wrote:

...

Hello, list.

I'm just curious to know if anybody is actively working on a double

precision version of PD. Please let me know if I can help in any way.

...

Best, Dario _______________________________________________ Pd-list@lists.iem.at mailing list UNSUBSCRIBE and account-management ->

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Katja Vetter has tried this and compiled a list of changes needed to make it work. It compiles fine, but apprently quite a few of the objects have trouble functioning correctly.

cheers Miller

On Mon, Dec 17, 2018 at 11:48:15PM +0100, Thomas Grill wrote:

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Am 16.12.2018 um 18:41 schrieb Alexandre Torres Porres porres@gmail.com: Am I crazy or did I hear some talk about 64bit for pd vanilla soon, maybe as early as 0.50-0?

No time to check deeper now, but to my surprise CFLAGS "-D PD_FLOATSIZE=64" ./configure && make does indeed compile from the vanilla git repo (but doesn't link with portmidi and portaudio for other reasons). The definitions in m_pd.h suggest that t_float becomes double...

best, Thomas

-- Thomas Grill http://grrrr.org

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Though Pd 0.49 compiled as above shows those small and large numbers,

it can't show all significant decimals in the GUI. This of course limits the usefulness of double precision and also complicates the interpretation of other tests.

Hi Katja, Have you taken a look at Purr Data? AFAICT the number precision is correctly displayed in the GUI for the double precision builds. If you want to play around with it you can compile using the toplevel makefile with make light. This will give you a deb or tarball with which you can install the basic Purr Data (core, pddp, and some others). It's about a 5 minute process on my Chromebook.

One outstanding question that came up was wrt table sizes for sqrt~ when compiling with PDFLOATSIZE=64: http://disis.music.vt.edu/pipermail/l2ork-dev/2018-June/001985.html Atm the same table size is used for both floatsizes. Best, Jonathan

Katja

On 12/16/18 1:16 PM, Giulio Moro via Pd-list wrote:

It's been done this past summer for Purr-data/Pd-l2ork. Here is the report: http://disis.music.vt.edu/pipermail/l2ork-dev/2018-August/002019.html

i did a check of the changes that went into purr-data, and afaict some of them are already in Pd-vanilla, and the rest is lingering on my harddisk waiting to be cleaned up. it seems that purr-data isn't really much ahead of Pd-vanilla in this respect.

there's still some open questions which i'd like to resolve before doing a PR (@katja: did you get my mail? :-))

anyhow, at least for *me*¹, double precision is on the roadmap for the the next Pd-release(s). of course, i have no idea what will eventually end up in the final releases.

gf,mads IOhannes

¹ https://github.com/pure-data/pure-data/projects