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GLPK 4.31 -- Release Information
********************************
Release date: Sep 02, 2008
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 C and
organized as a callable library.
In this release:
The core LP solver based on the dual simplex method was
re-implemented and now it provides both phases I and II.
The following new API routines were added:
glp_scale_prob automatic scaling of problem data
glp_std_basis construct standard initial LP basis
glp_adv_basis construct advanced initial LP basis
glp_cpx_basis construct Bixby's initial LP basis
For description of these new routines see the reference manual
included in the distribution.
The following API routines are deprecated:
lpx_scale_prob, lpx_std_basis, lpx_adv_basis, lpx_cpx_basis.
Necessary changes were made in memory allocation routines to
resolve portability issues for 64-bit platforms.
New version of the routine lpx_write_pb to write problem data
in OPB (pseudo boolean format) was added to the package. Thanks
to Oscar Gustafsson <[EMAIL PROTECTED]> for the contribution.
Two new makefiles were added to build the package for 32- and
64-bit Windows with Microsoft Visual Studio Express 2008.
Thanks to Heinrich Schuchardt <[EMAIL PROTECTED]> (aka
Xypron) for the contribution and testing.
Two new makefiles were added to build the package with Digital
Mars C/C++ 8.50 and Open Watcom C/C++ 1.6 (for 32-bit Windows).
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:
3f927e94d88151b1330da360d20d4caf *glpk-4.31.tar.gz
GLPK is also available as a Debian GNU/Linux package. See its web page
at <http://packages.debian.org/etch/glpk>.
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