search for: _wide

Displaying 6 results from an estimated 6 matches for "_wide".

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2014 Jan 03
2
PATCH: asm versions for two _wide() functions
As I wrote earlier, GCC generates slow ia32 code for FLAC__lpc_compute_residual_from_qlp_coefficients_wide() and FLAC__lpc_restore_signal_wide(). So 24-bit encoding/decoding is slower for GCC compile than for MSVS or ICC compile. I took FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32 and FLAC__lpc_restore_signal_asm_ia32 asm functions and wrote their _wide versions. -------------- next part -...
2014 Jun 19
1
stream_encoder: 32 vs 64 bit accumulator
Another interesting comment is inside src/libFLAC/include/private/fixed.h: "The _wide() version uses 64-bit integers which is statistically necessary when bits-per-sample + log2(blocksize) > 30" I mean the word "statistically". libFLAC uses FLAC__fixed_compute_best_predictor_wide() if "bits_per_sample + FLAC__bitmath_ilog2(blocksize)+1 > 30" is true...
2017 Feb 12
1
Problems installing tibble (ggplot2) in R running Ubuntu 14.04
...epositories, which is a few | years old, and not compatible with the cran version of 'tibble'. You | should either reinstall Rcpp from CRAN, or, install the development | version of 'tibble' which resolves the issue. Better still, use the repositories maintained by Michael to get a _wide variety_ of _current_ packages: 1. Over 3400 packages from CRAN ready to use as binaries: root at 092af40cc094:/# apt-cache search r-cran- | wc -l 3411 root at 092af40cc094:/# 2. Obviously a current Rcpp (as well as the distro, here 14.04, one) root at 092af40cc094:/# apt-cache pol...
2015 Apr 14
0
Warninig: ffmpeg FLAC en/decoder
...an be successfully decoded by ffmpeg, but not FLAC. So it's either a bug somewhere (presumably in ffmpeg, but maybe in FLAC), or ffmpeg treats something differently than FLAC. libFLAC has routines like FLAC__lpc_compute_residual_from_qlp_coefficients and FLAC__lpc_restore_signal (and their ..._wide counterparts). libFLAC doens't allow the "sum" variable in them to overflow, right? It seems that ffmpeg routines allow this, and that's the reason of these problems.
2014 Jun 19
5
[PATCH] stream_encoder : Improve selection of residual accumulator width
On Thu, Jun 19, 2014 at 03:30:22PM +0400, lvqcl wrote: > BTW, what can you say about the following place in stream_decoder.c > in read_subframe_lpc_() function: > > /*@@@@@@ technically not pessimistic enough, should be more like > if( (FLAC__uint64)order * ((((FLAC__uint64)1)<<bps)-1) * ((1<<subframe->qlp_coeff_precision)-1) < (((FLAC__uint64)-1)
2016 Dec 19
4
Problems installing tibble (ggplot2) in R running Ubuntu 14.04
Hi, I am unable to install tibble, a required package for ggplot2 in R. I am running R (version 3.3.2 ) in RStudio (version 1.0.44). My OS is ubuntu 14.04 (64 bits). I get the same error when running R from the terminal. Any help would be gretly appreciated. Kind regards, Terje **************** Error messages: **************** install.packages("tibble") Installing package into