similar to: crc32() clashes with zlib function of the same name

Hi Samba I noticed that the crc32 function in lib/crc32.c is somewhat inefficient. This little patch will reduce the inner loop from 10 instructions to 8 instructions on x86 with gcc. gcc can't figure out this simple optimization by itself on x86. Further optimization is possible by using the impl. in the linux 2.5 kernel, but I don't know if it is worth it. Is crc32 common in samba?

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

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.

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

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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

H. Peter Anvin wrote: > 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. > >>> >

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 indeed identical. I was pretty >> sure, because I wrote that code a long time

This was originally sent to Vikram Adve -- I have forwarded it to the list as per his suggestion ... Regards Mark O'Neill ---------- Forwarded message ---------- Date: Thu, 8 Dec 2005 11:51:40 +0000 (GMT) From: Mark ONeill <mao at raven.linux.ox.ac.uk> To: vadve at cs.uiuc.edu Cc: mflesner at cs.uiuc.edu Subject: LLVM help ... Dear Vikram I spoke to you quite a long time ago about

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

The ARM binaries seem to be corrupt. Although correctly signed, the xz file seems to be truncated arm7% unxz < clang+llvm-3.5.0-rc3-armv7a-linux-gnueabihf.tar.xz | wc -c unxz: (stdin): Unexpected end of input 133214381 M.E.O. On Aug 21, 2014, at 10:56 AM, Bill Wendling <isanbard at gmail.com> wrote: > Ahem. And now for the correct URL: > >

From: "Richard W.M. Jones" <rjones@redhat.com> Headers and code related to GUID Partition Tables are moved to a common directory to allow us to share that code across multiple plugins and filters in future. This change is pure refactoring. --- Makefile.am | 1 + common/gpt/Makefile.am | 42 +++++++++++ common/gpt/efi-crc32.c

Nuno, One of your recent emails got me thinking about inlining. I say this function is always well defined, And it always executes statement S F(a) { If (a == a) S; } And that if this function is inlined it must still be well defined, And still always execute statement S But if I read your example correctly you feel that the result of inlining is undefined behavior because “if

On 6/4/19 4:05 AM, Gene Cumm via Syslinux wrote: > On Sat, May 25, 2019 at 8:33 AM Johann Obermayr via Syslinux > <syslinux at syslinux.org> wrote: >> >> Hello, >> >> Is there a function to check a bzImage CRC ? >> >> If (ImageCRC("/bzImage") == -1) >> Load_kernel("/BACKUP/bzImage") or what else >>

Hi All. Damien merged a bunch of changes today which caused compile errors on a few platforms (which you can see live and in colour at [0]). a) Solaris, early AIX: ../crc32.c:100: `u_int32_t? undeclared (first use in this function) On these platforms u_int32_t is defined in defines.h which is not included by crc32.c. Fixed by attached patch. b) PAM platforms (Redhat, Solaris once a) is

Mark Haney <mark.haney at neonova.net> writes: > On 10/04/2017 08:22 AM, Gary Stainburn wrote: >> On Wednesday 04 October 2017 12:54:44 Mark Haney wrote: >>> Sorry, but if you have to use packages that don't originate from CentOS >>> and they do that, then I wouldn't use them. Period.? I'd compile from >>> source before I used something

To make R.matlab's readMat work for me[1] I needed access to zlib's uncompress function. R already links with zlib, and sometime last year I hobbled together a quick package to get at a few functions. It's my first package, so I would love feedback both on the package and its purpose. I've dropped a temporary copy at http://jriedy.users.sonic.net/internalzlib_0.1.tar.gz Could

Hi, Before I begin, my environment consists of a standard master/client config with the exception that all my clients run under a non-root user. I have to use non-root so I can''t simply restart under root to fix the problem. Master -> 3.1.1 Client -> 2.7.17 using mostly the hiera() function in my classes. problem: I have run into an issue today where my custom fact is not

On 10/04/2017 08:22 AM, Gary Stainburn wrote: > On Wednesday 04 October 2017 12:54:44 Mark Haney wrote: >> Sorry, but if you have to use packages that don't originate from CentOS >> and they do that, then I wouldn't use them. Period.? I'd compile from >> source before I used something configured that way. > This perspective to some extent employs cutting your