./devel/ldpc, Low Density Parity Check Codes

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Branch: CURRENT, Version: 20060208nb1, Package name: ldpc-20060208nb1, Maintainer: agc

This collection of programs and modules, written in C, is intended to
support research and education concerning Low Density Parity Check
(LDPC) codes. (Note, however, that the copyright notice no longer
restricts use to these purposes). These codes were invented by Robert
Gallager in the early 1960's, and re-invented and shown to have very
good performance by David MacKay and myself in the mid-1990's. The
decoding algorithm for LDPC codes is related to that used for Turbo
codes, and to probabilistic inference methods used in other fields.
Variations on LDPC and Turbo codes are currently the best practical
codes known, in terms of their ability to transmit data at rates
approaching channel capacity with very low error probability.


Required to build:
[pkgtools/cwrappers]

Master sites:

Filesize: 395.57 KB

Version history: (Expand)

CVS history: (Expand)


   2021-10-26 12:20:11 by Nia Alarie | Files touched by this commit (3016) 
Log message:
archivers: Replace RMD160 checksums with BLAKE2s checksums

All checksums have been double-checked against existing RMD160 and
SHA512 hashes

Could not be committed due to merge conflict:
devel/py-traitlets/distinfo

The following distfiles were unfetchable (note: some may be only fetched
conditionally):

./devel/pvs/distinfo pvs-3.2-solaris.tgz
./devel/eclipse/distinfo eclipse-sourceBuild-srcIncluded-3.0.1.zip
   2021-10-07 15:44:44 by Nia Alarie | Files touched by this commit (3017) 
Log message:
devel: Remove SHA1 hashes for distfiles
   2020-01-26 18:32:28 by Roland Illig | Files touched by this commit (981) 
Log message:
all: migrate homepages from http to https

pkglint -r --network --only "migrate"

As a side-effect of migrating the homepages, pkglint also fixed a few
indentations in unrelated lines. These and the new homepages have been
checked manually.
   2019-11-03 11:39:32 by Roland Illig | Files touched by this commit (274) 
Log message:
devel: align variable assignments

pkglint -Wall -F --only aligned --only indent -r

No manual corrections.
   2015-11-03 04:29:40 by Alistair G. Crooks | Files touched by this commit (1995) 
Log message:
Add SHA512 digests for distfiles for devel category

Issues found with existing distfiles:
	distfiles/eclipse-sourceBuild-srcIncluded-3.0.1.zip
	distfiles/fortran-utils-1.1.tar.gz
	distfiles/ivykis-0.39.tar.gz
	distfiles/enum-1.11.tar.gz
	distfiles/pvs-3.2-libraries.tgz
	distfiles/pvs-3.2-linux.tgz
	distfiles/pvs-3.2-solaris.tgz
	distfiles/pvs-3.2-system.tgz
No changes made to these distinfo files.

Otherwise, existing SHA1 digests verified and found to be the same on
the machine holding the existing distfiles (morden).  All existing
SHA1 digests retained for now as an audit trail.
   2013-05-11 23:21:22 by Alistair G. Crooks | Files touched by this commit (2) 
Log message:
Allow this package to be cross-built - pick up ${CC} from the environment,
if defined.
   2012-10-31 12:19:55 by Aleksej Saushev | Files touched by this commit (1460) 
Log message:
Drop superfluous PKG_DESTDIR_SUPPORT, "user-destdir" is default these days.
   2011-02-10 17:15:37 by Alistair G. Crooks | Files touched by this commit (4) | Package updated
Log message:
update ldpc package to pkgrevision 1

fix a packaging botch whereby the file of random numbers was not installed,
and a reference to the build directory was embedded in the executables.

now the regression tests run to completion:

	Running ex-dep:

	Running ex-ham7a:

	Running ex-ham7b:

	Running ex-ldpc-encode:

	Running ex-ldpc36-1000a:

	Running ex-ldpc36-5000a:

	Running ex-ldpcvar-5000a:

	Running ex-wrong-model:
	155c155
	< Bit error rate (on message bits only): 1.320e-02
	---
	> Bit error rate (on message bits only): 1.299e-02