similar to: floating point exceptions, and questions

http://surf.chimie.uqam.ca/~kruus/vorbis/ now contain branch_beta3 and trunk subdirs that are updated daily (until branch_beta3 becomes historical next week, like the other snapshots at that URL). to web-browse the source code, go to http://surf.chimie.uqam.ca/~kruus/vorbis/lxr/http/source erik (back after audio-video sync miniproject. Yay!) --- >8 ---- List archives:

Hi. I've put up some docs related to my first encounter with the vorbis source code at http://surf.chimie.uqam.ca/~kruus/vorbis/encoder/index.html It documents a newbie's first look and [serious] attempts to trace through examples/example_encoder.c . Don't laugh too hard! Even though the docs are quite un-doc-like, I've stopped working on them indefinitely, since Monty

Dear all, Compiling R-0.64.0 on DEC osf4.0 has the following error message (earlier version was OK). cc -ieee_with_inexact -g -I../include -I../../src/include -c pnf.c -o pnf.o cc -ieee_with_inexact -g -I../include -I../../src/include -c pnt.c -o pnt.o cc: Error: pnt.c, line 83: In this statement, "1021" is not an lvalue, but occurs in a context that requires one. if (df >

Full_Name: Tim Middelkoop Version: 0.64.0 OS: IRIX 6.3 on O2 Submission from: (NULL) (128.119.88.192) Various IRIX complile issues src/nmath/pnt.c IRIX cc does not like double negatives Makeconf,config.site,etc/Makeconf f77 pic hack, should change Makeconf.in or other... change -PIC with -KPIC enjoy, tim... === diff -ru orig/R-0.64.0/src/nmath/pnt.c R-0.64.0/src/nmath/pnt.c ---

Hi folks, I just "fixed" a bug on ARM LNT regarding lowering of a VMUL.f32 as NEON and not VFP. The former is not IEEE 754 compliant, while the latter is, and that was failing TSVC. The question is: * is this a problem with the test, that shouldn't be expecting values below FLT_MIN, or * is it a bug in the lowering, that should only be lowering to NEON's VMUL when unsafe-math

I have been a member of the mailing list for a couple months now. I have not contributed anything because it has been difficult to gain a toehold from which I could really understand the concepts used in Ogg Vorbis. I would like to help out, but it is hard to get an idea of the overall architecture with docs like http://www.xiph.org/ogg/vorbis/doc/vorbis.html , in which every link is dead.

Hi, | The question is: | * is this a problem with the test, that shouldn't be expecting values below FLT_MIN, or | * is it a bug in the lowering, that should only be lowering to NEON's VMUL when unsafe-math is on, or | * neither, and people should disable that when they want correctness? Note that if you go for the second option, IMO unsafe-math is _far_ too "aggressive" an

Hi, I'm the author of a fixed-point MPEG audio decoder called MAD: http://www.mars.org/home/rob/proj/mpeg/ I've been considering the possibility of writing a similar fixed-point decoding library for Ogg Vorbis. Unfortunately, every time I've looked for Vorbis decoding specifications, I have found them incomplete. :-( I'd rather not try to reverse-engineer specifications

Here are some very small header patches to make header dependencies less visible. If other developers would like to use cxref to produce cross-referenced html source, I can post a Makefile to do this. Sorry about not being able to send it as an attachment. You can also get it at http://216.164.32.243/~kruus/vorbis/ for now, but my net connection is slow. 'cxref' suits my purposes,

Dear gracious R community, I would like to produce charts of phytoplankton biomass changes through time. Each species has a line, and the biomass varies in mirror form along the line for each species along the X time axis. Here is an example of what I'd like to do: http://www.er.uqam.ca/nobel/r30240/Succession.jpg Any suggestions? Thanks David Bird UQAM, Montreal

Hi Renato, You're right. Strictly speaking, using NEON for scalar floating point isn't completely safe for exactly this reason (also NaNs, IIRC). We generally do it anyway because on common cores (cortex-a8) VFP is pretty terrible and the NEON approximation is correct for the vast majority of use-cases that people care about. Yes, that's cutting some corners. Would you mind making

I tried compiling R-devel from the subversion sources using gcc 3.4.1 and it fails in make check at d-p-q-r-tests. It compiles and works using gcc 3.3.4. Can post more details if needed (don't remember the exact error off the top of my head). Linux-i686. -- robert.kruus at utoronto.ca linux: the choice of a GNU generation (ksh at cis.ufl.edu put this on Tshirts in '93)

Hi I’m working in behavioural ecology I’m interesting in doing a multi-factorial MANOVA with a random effect as of independent variable. Do you know if it’s possible to do that and how I can do it? Thanks Julien Julien Martin Laboratoire de Denis Réale Chaire de Recherche du Canada en écologie comportementale Canadian Research Chair in behavioural ecology Département des sciences

Martin, You got some fine response already from other r-users. Indeed, centering explanatory variables is quite common and it really can have benefits in numerical accuracy. However one might also use centering for response variable and even standardization i.e. x - mean(x) / sd(x). This might increase the robustness of multivariate analysis, where variables have very different scales. For

Hola, me estoy crispando con un tema que no es la primera vez que he resuelto pero (extraamente) ahora no puedo resolver. Estoy instalando un paquete que no est disponible en la versin 4 de R: packageurl <- "http://cas.uqam.ca/pub/R/bin/macosx/el-capitan/contrib/3.6/CASdatasets_1.0-10.tgz" install.packages(packageurl, repos = NULL, dependencies = TRUE, type="source")

---------- Forwarded message ---------- Date: Mon, 18 Dec 2000 15:50:05 -0500 (EST) From: Erik Kruus <kruus@on2.com> Reply-To: vorbis-dev@xiph.org To: vorbis-dev@xiph.org Subject: Re: [vorbis-dev] what script or command makes the codebooks? I've been through the entire vq table process during the last week. Some folks have already suffered through listening to .ogg files encoded with a

If we compare the "common" subdirectory between nbdkit @ 6b4178d0fdfe ("ci: Temporarily disable perl in MacOS", 2023-02-27) and libnbd @ d05cd8f384a7 ("Version 1.15.11.", 2023-02-28), we find differences. We can categorize these differences along two (orthogonal) axes: - Intentional or unintentional. Intentional differences are for example when one of the libnbd

Hi I have a linear model and I want to tests whether the model terms are significant I used anova but F and P value depend on the order of the terms in the model. I have repeated the same analysis in another stat software and F and P value did not differ with order of terms in the model. Can anyone can explain what happen or what am I doing wrong ? In R > anova (lm(Y~X.1+X.2)) Analysis of

The vorbis source browser and newbie docs that I used to host in Montreal are now in New York. At least for now. The old beta2 encoder document has many links that work again, reflecting some of the beta3 directory changes. While the document still is 95% beta2-centric, it is -slowly- being updated to reflect the beta3+ CVS trunk. Vorbis newbies who are ready to jump into browsing the source

Hi, I was doing some speed and compression comparisons with various apodization/windowing functions, and found out that the definitions for the bartlett and bartlett_hann window in the FLAC codebase have been wrong since their introduction. The attached patch fixes that. Furthermore, I found some peculiar behaviour of the gauss apodization that seems to expose bug. Using different windows