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| From | Andrew Makhorin <mao@gnu.org> |
| Newsgroups | gnu.announce |
| Subject | glpk 4.60 release information |
| Date | Fri, 01 Apr 2016 14:32:08 +0300 |
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
GLPK 4.60 Release Information
*****************************
Release date: April 1, 2016
GLPK (GNU Linear Programming Kit) is intended for solving large-scale
linear programming (LP), mixed integer linear programming (MIP), and
other related problems. It is a set of routines written in ANSI C89 and
organized as a callable library.
In this release:
Some improvements were made in the primal and dual simplex
solvers to make the solution process more numerically stable.
An experimental long-step ratio test feature was added to the
dual simplex. On API level this feature is available thru the
GLP_RT_FLIP option. For glpsol it is available thru the options
--flip. This feature is not documented yet.
Additional check was added to reject wrong solutions sometimes
reported by the PROXY heuristic.
A bug (memory leak) was fixed in the FPUMP heuristic routine.
Thanks to <nicolas.derhy@engie.com> for bug report.
The header sql.h was renamed to avoid conflicts with standard
ODBC headers. Thanks to Noli Sicad <nsicad@gmail.com> for bug
report.
See GLPK web page at <http://www.gnu.org/software/glpk/glpk.html>.
GLPK distribution can be ftp'ed from <ftp://ftp.gnu.org/gnu/glpk/> or
from some mirror ftp sites; see <http://www.gnu.org/order/ftp.html>.
MD5 check-sum is the following:
eda7965907f6919ffc69801646f13c3e *glpk-4.60.tar.gz
GLPK is also available as a Debian GNU/Linux package. See its web page
at <http://packages.debian.org/stable/math/glpk-utils>.
Precompiled GLPK binaries (lib, dll, exe) for 32- and 64-bit MS Windows
can be downloaded from <http://winglpk.sourceforge.net/>.
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glpk 4.60 release information Andrew Makhorin <mao@gnu.org> - 2016-04-01 14:32 +0300
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