This might be a noobish question, but is removing denorms, infs, and NaNs also the purpose of PD_BIGORSMALL()?
On Mon, Feb 8, 2016 at 10:13 AM, Ivica Ico Bukvic <i...@vt.edu> wrote: > I thought this, too. I seem to (mis)remember somewhere that -O2 > optimization at compile-time would help with this, which is what pd-l2ork's > freeverb~ uses and still exhibits previously reported behavior. That said, > I wonder if denormals would also solve potential NaNs. At any rate, I've > updated freeverb~ to explicitly use denormal function's return value in > pd-l2ork and will run some tests and let you know. If you'd like to test it > out, download the latest deb dated 20160208 (64bit build only for the time > being). > > Best, > > Ico > > > On 2/8/2016 4:44 AM, Kjetil Matheussen wrote: > > Regarding denormals, if that's the problem, shouldn't it be good enough > to compile with -fpmath=sse -msse2 and run the following code one time in > the dsp thread? > > #ifdef __SSE__ > #ifdef __SSE2__ > #define AVOIDDENORMALS _mm_setcsr(_mm_getcsr() | 0x8040) > #else > #define AVOIDDENORMALS _mm_setcsr(_mm_getcsr() | 0x8000) > #endif > #else > # error "must compile with -fmpath=sse" > #endif > > > > > On Mon, Feb 8, 2016 at 10:28 AM, Kjetil Matheussen < > k.s.matheus...@gmail.com> wrote: > >> You could use the faust version of freeverb and compile it for pd. It's >> probably less likely to have bugs. >> For instance by pasting >> http://sourceforge.net/p/faudiostream/code/ci/master/tree/examples/freeverb.dsp?format=raw >> into http://faust.grame.fr/onlinecompiler/ >> >> >> On Sun, Feb 7, 2016 at 4:08 AM, Ivica Bukvic < <i...@vt.edu>i...@vt.edu> >> wrote: >> >>> Thank you, Katja. Is there a newer version than this out there? >>> >>> Best, >>> >>> -- >>> Ivica Ico Bukvic, D.M.A. >>> Associate Professor >>> Computer Music >>> ICAT Senior Fellow >>> Director -- DISIS, L2Ork >>> Virginia Tech >>> School of Performing Arts – 0141 >>> Blacksburg, VA 24061 >>> (540) 231-6139 <%28540%29%20231-6139> >>> i...@vt.edu >>> www.performingarts.vt.edu >>> disis.icat.vt.edu >>> l2ork.icat.vt.edu >>> ico.bukvic.net >>> On Feb 6, 2016 10:25 AM, "katja" <katjavet...@gmail.com> wrote: >>> >>>> If the freeverb~ version you use looks like the one in >>>> >>>> http://sourceforge.net/p/pure-data/svn/HEAD/tree/trunk/externals/freeverb~/freeverb~.c >>>> , >>>> there's a function 'fix_denorm_nan_float() defined starting at line >>>> 154. The function is called later (in line 225 and others) but the >>>> return value is never stored. Therefore freeverb~ doesn't flush >>>> denormals. >>>> >>>> On Sat, Feb 6, 2016 at 3:34 PM, Ivica Bukvic <i...@vt.edu> wrote: >>>> > Thank you all. Looks like I've got some troubleshooting to do and will >>>> > report what I find. >>>> > >>>> > Best, >>>> > >>>> > -- >>>> > Ivica Ico Bukvic, D.M.A. >>>> > Associate Professor >>>> > Computer Music >>>> > ICAT Senior Fellow >>>> > Director -- DISIS, L2Ork >>>> > Virginia Tech >>>> > School of Performing Arts – 0141 >>>> > Blacksburg, VA 24061 >>>> > (540) 231-6139 <%28540%29%20231-6139> >>>> > i...@vt.edu >>>> > www.performingarts.vt.edu >>>> > disis.icat.vt.edu >>>> > l2ork.icat.vt.edu >>>> > ico.bukvic.net >>>> > >>>> > On Feb 6, 2016 9:20 AM, "IOhannes m zmölnig" <zmoel...@iem.at> wrote: >>>> >> >>>> >> On 02/06/2016 10:29 AM, katja wrote: >>>> >> > Possibly an inf or nan recirculating in the delay lines? It seems >>>> that >>>> >> > freeverb~ calls function fix_denorm_nan_float(float v) but doesn't >>>> use >>>> >> > the return value. >>>> >> >>>> >> you *might* be able to confirm this by sending the output for >>>> >> [freeverb~] to [print~] (the silent samples would be NaN or Inf >>>> rather >>>> >> than 0 (or some other constant value)) >>>> >> >>>> >> gamds >>>> >> IOhannes >>>> >> >>>> >> >>>> >> >>>> >> _______________________________________________ >>>> >> Pd-list@lists.iem.at mailing list >>>> >> UNSUBSCRIBE and account-management -> >>>> >> http://lists.puredata.info/listinfo/pd-list >>>> >> >>>> > >>>> > _______________________________________________ >>>> > Pd-list@lists.iem.at mailing list >>>> > UNSUBSCRIBE and account-management -> >>>> > http://lists.puredata.info/listinfo/pd-list >>>> > >>>> >>> >>> _______________________________________________ >>> Pd-list@lists.iem.at mailing list >>> UNSUBSCRIBE and account-management -> >>> <http://lists.puredata.info/listinfo/pd-list> >>> http://lists.puredata.info/listinfo/pd-list >>> >>> >> > > > _______________________________________________ > Pd-list@lists.iem.at mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > >
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