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GLPK 4.42 -- Release Information
********************************
Release date: Jan 13, 2010
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 following new API routines were added:
glp_check_dup check for duplicate elements in sparse
matrix
glp_sort_matrix sort elements of the constraint matrix
glp_read_prob read problem data in GLPK format
glp_write_prob write problem data in GLPK format
glp_analyze_bound analyze active bound of non-basic variable
glp_analyze_coef analyze objective coefficient at basic
variable
glp_print_ranges print sensitivity analysis report (this
routine replaces lpx_print_sens_bnds and
makes it deprecated)
For description of these new routines and the GLPK LP/MIP
format see a new edition of the reference manual included in
the distribution. (Chapter "Graph and network API routines" was
carried out from the main reference manual and included in the
distribution as a separate document.)
The following new command-line options were added to the stand-
alone solver glpsol:
--glp filename read problem data in GLPK format
--wglp filename write problem data in GLPK format
--ranges filename print sensitivity analysis report (this
option replaces --bounds)
Now all GLPK routines performing file I/O support special
filenames "/dev/stdin", "/dev/stdout", and "/dev/stderr", which
can be specified in the same way as regular filenames. This
feature is plaform-independent.
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:
9091a60c4c44a16a149375f7a6cce158 *glpk-4.42.tar.gz
GLPK is also available as a Debian GNU/Linux package. See its web page
at <http://packages.debian.org/etch/glpk>.
Precompiled GLPK binaries (lib, dll, exe) for 32- and 64-bit MS Windows
can be found at <http://winglpk.sourceforge.net/>. Thanks to Xypron
<[email protected]>.
GUSEK, a GLPK IDE for 32-bit MS Windows (can run under Wine on Linux
machines) can be found at <http://gusek.sourceforge.net/>. Thanks to
Luiz M. M. Bettoni <[email protected]>.
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