glpk 4.42 release information

[Andrew Makhorin]

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GLPK 4.42 -- Release Information
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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
<address@hidden>.

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 <address@hidden>.

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