similar to: [RESEND] crc32 optimization

I found how to build CRC32 table for Ogg in JS, if anyone interested: function _makeCRC32Table() { // From https://stackoverflow.com/questions/53438815/hot-to-build-crc32-table-for-ogg const polynomial = 79764919; const mask = 2147483648; const CRCTable = new Uint32Array(256); for (let i = 256; i--;) { let char = i << 24; for (let j = 8; j--;) {

Please see the documentation: https://xiph.org/ogg/doc/framing.html I would encourage you to use random serial numbers, as intended, also, as any downstream consumers of your files will face limitations similar to the ones you are facing if they want to do anything more with them. But before you go too far down the route of changing the serial numbers, can you tell us what software is

Dear R-develers, Antoine Lucas suggested extending my small digest package (which provides md5 and sha-1 digests of R objects, which it are serialized if needed) with a crc32 function, and provided a fairly complete patch. We are now wondering if we should play it safe and bundle crc32.c (plus utils) in the digest sources (as I do with md5 and sha1), or if we can assume that crc32 is present on

I faced with problem about CRC32 calculation, I see that lookup table is different here https://github.com/rillian/rogg/blob/master/rogg.c#L196 end for example here https://stackoverflow.com/a/18639975/1879101 - JS code on this page for building the table produces the same result. I think that generating the table is better than having hardcoded one - for security against the case when somebody

What about multiple errors detection with crc32? Is it work? Thanks.

Hi all, I wanted to give an update on this as I know this MS Hotfix is critical and must be applied to protect against the (latest) Microsoft worm. I think I've found the problem in the code, and am currently testing a fix for this (not in the release to others to test stage yet). As soon as I'm reasonably confident I'll put a patch out there for others to test, and we'll

Hi all, I wanted to install R under a sunOs machine, so I launched the configuration with the following command: "./configure --prefix /sw/gnu/R/R-2.1.0/sun/ --with-readline=no" The rsult of this configuration seemed good " R is now configured for sparc-sun-solaris2.8 Source directory: . Installation directory: /sw/gnu/R/R-2.1.0/sun/ C compiler:

FYI, The CRC64 intrinsics were renamed to CRC32 since there is no such thing. See below for details. Chad On May 26, 2011, at 4:13 PM, Chad Rosier wrote: > Author: mcrosier > Date: Thu May 26 18:13:19 2011 > New Revision: 132163 > > URL: http://llvm.org/viewvc/llvm-project?rev=132163&view=rev > Log: > Renamed llvm.x86.sse42.crc32 intrinsics; crc64 doesn't exist.

OpenSSH defines a function crc32(), and so does the zlib library. This is at best confusing (since they are different functions with different prototypes), and at worst a source of crashes. I found this problem getting OpenSSH up and running on Darwin, which turned out to be calling the wrong function. My bandaid was to include ``-Dcrc32=crcsum32'' in CFLAGS. The proper fix would be

The problem was solved by setting environment variable CXX. But somehow a new one came. The gcc is installed in /usr/local/gcc-4.2.3. I managed to change clang/lib/Frontend/InitHeaderSearch.cpp clang/lib/Driver/ToolChains.cpp to force clang use the crt lib for that version. For details, plz see http://www.advogato.org/person/redi/diary/228.html. So now I have no problem of using clang to

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On 6/7/19 10:25 PM, H. Peter Anvin via Syslinux wrote: >> >> However, the CRC polynomial for zlib and the Linux kernel should both be the >> same: 0x04c11db7. > > I just double-checked, and the CRC tables are indeed identical. I was pretty > sure, because I wrote that code a long time ago... > Ah, it seems that zlib's CRC32 returns the binary inverse of the

On 6/7/19 10:48 PM, H. Peter Anvin via Syslinux wrote: > On 6/7/19 10:34 PM, H. Peter Anvin via Syslinux wrote: >> On 6/7/19 10:25 PM, H. Peter Anvin via Syslinux wrote: >>>> >>>> However, the CRC polynomial for zlib and the Linux kernel should both be the >>>> same: 0x04c11db7. >>> >>> I just double-checked, and the CRC tables are

Hello, I am trying to compile R-2.2.0 on Slackware 10.2. I did ./configure --prefix=/usr --build=i486-slackware-linux. It went off without any problem and gave this configure status: R is now configured for i486-slackware-linux-gnu Source directory: . Installation directory: /usr C compiler: gcc -g -O2 C++ compiler: g++ -g -O2 Fortran

Hi, I've restarted my Elsa/LLVM project after three months of having real life intrude. I upgraded my LLVM source to the current trunk. I had to make a few changes to my source, e.g. LLVMFoldingBuilder became IRBuilder and several instances of "new" became "Create". Now, a test case that previously succeeded fails. I run the following script: #!/bin/sh if [ 1 -ne 0 ]

This is related to the "No space on OCFS2 volume" error discussed here this past Sep/Oct. Our Oracle support rep pointed us to Metalink note #1232702.1 and suggested we should script something up to periodically check the free contiguous blocks in the group chains for the volume in question. Reading the note, I get how to get Clusters per Group X Bits per Cluster from the "stat

Hi, everyone: My system was compromised a few days ago. The cracker attacked the system through openssh 2.9p2 release 8.7. I attached part of the log file. Thanks. Pin Lu (pin at stredo.com) Nov 25 11:33:05 ns sshd[10627]: Disconnecting: Corrupted check bytes on input. Nov 25 11:33:36 ns named[10478]: Lame server on '55.254.58.211.in-addr.arpa' (in

On Sun, 2003-11-16 at 10:44, Chris Lattner wrote: > > In other words, I'd like to take a set of bytecode files, optimize them > > together even though they don't form a complete program, and then write > > out the new (optimized) bytecode files. It would be preferable to write > > them out to a single archive rather than to individual bytecode files > >

Hi, I'ma having some troubles installing R under Unix. As it is written in the "how to install R" the ./configure passed on but when I type make I recieve this error message : gmake[1]: Entering directory `/usr/local/R_HOME/R-2.4.0/m4' gmake[1]: Nothing to be done for `R'. gmake[1]: Leaving directory `/usr/local/R_HOME/R-2.4.0/m4' gmake[1]: Entering directory

It would be nice to know how often we get checksum failures. Even better, how many of them we can fix with the single bit ecc. So, we add a statistics structure. The structure can be installed into debugfs wherever the user wants. For ocfs2, we'll put it in the superblock-specific debugfs directory and pass it down from our higher-level functions. The stats are only registered with