lpx_load_mat3          lpx_load_matrix        lpx_unmark_all         (no more supported)        lpx_mark_row           (no more supported)        lpx_mark_col           (no more supported)        lpx_clear_mat          (no more supported)        lpx_del_items          lpx_del_rows, lpx_del_cols        lpx_get_row_bnds       lpx_get_row_type, lpx_get_row_lb,                               lpx_get_row_ub        lpx_get_col_bnds       lpx_get_col_type, lpx_get_col_lb,                               lpx_get_col_ub        lpx_get_obj_c0         lpx_get_obj_coef        lpx_get_row_coef       (no more supported)        lpx_get_col_coef       lpx_get_obj_coef        lpx_get_row_mark       (no more supported)        lpx_get_col_mark       (no more supported)        lpx_get_row_info       lpx_get_row_stat, lpx_get_row_prim,                               lpx_get_row_dual        lpx_get_col_info       lpx_get_col_stat, lpx_get_col_prim,                               lpx_get_col_dual        lpx_get_ips_stat       lpx_ipt_status        lpx_get_ips_row        lpx_ipt_row_prim, lpx_ipt_row_dual        lpx_get_ips_col        lpx_ipt_col_prim, lpx_ipt_col_dual        lpx_get_ips_obj        lpx_ipt_obj_val        lpx_get_mip_stat       lpx_mip_status        lpx_get_mip_row        lpx_mip_row_val        lpx_get_mip_col        lpx_mip_col_val        lpx_get_mip_obj        lpx_mip_obj_val        Obsolete API routines were kept for backward compatibility,        however, they will be removed in the future.        * doc/refman.*        New edition of the GLPK reference manual containing description        of all new API routines was included.        * contrib/glpkmex/*.*        GLPKMEX, a Matlab MEX interface to GLPK package, contributed by        Nicolo Giorgetti <giorgetti@dii.unisi.it> was included.        * doc/GLPK_FAQ.txt        GLPK FAQ contributed by Harley Mackenzie <hjm@bigpond.com> was        included.Fri Dec 12 12:00:00 2003 Andrew Makhorin <mao@mai2.rcnet.ru>        * GLPK 4.3 has been released.        * configure.in        The bug, due to which the standard math library is not linked on        some platforms, was fixed.        * glpmpl3.c        The bug (0 ** y) was fixed in the routine fp_power.        * glpmpl.h, glpmpl1.c, glpmpl3.c        Some new built-in functions (round, trunc, Irand224, Uniform01,        Uniform, Normal01, Normal) were added to the MathProg language.        * glpmpl1.c        The MathProg syntax was changed to allow writing 'subj to'.        * glplpx.h, glplpx1.c, glplpx2.c        The new api routine lpx_get_ray_info was added.        * glplpx8a.c        The api routine lpx_print_sol was changed to print the number of        non-basic variable, which causes primal unboundness.        * glpmps.c        The code was changed to avoid errors on compiling the package on        Mac OS X. Thanks to Andre Girard <andre@inrs-emt.uquebec.ca> for        the bug report.        * doc/lang.*, doc/refman.*        Several typos were fixed and some new material was added in the        glpk documentation.Fri Nov 14 12:00:00 2003 Andrew Makhorin <mao@mai2.rcnet.ru>        * GLPK 4.2 has been released.        * glpiet.h, glpiet.c, glpios.h, glpios1.c, glpios2.c, glpios3.c        A preliminary implementation of the Integer Optimization Suite        (IOS) was included in the package. Eventually IOS will replace        the Implicit Enumeration Suite (IES).        * glplpx.h, glplpx6d.c        A dummy version of the integer optimization routine lpx_intopt        was included in the package. Later this routine will replace the        routine lpx_integer.        * examples/glpsol.c        A new command-line option --int-opt was added to the solver to        call lpx_intopt rather than lpx_integer.        * glpbcs.h, glpbcs1.c, glpbcs2.c        Being replaced by IOS routines (see above) the Branch-and-Cut        Framework (BCS) routines were removed from the package.        * examples/tspsol.c        Stand-alone Symmetric TSP solver was completely re-programmed        using IOS routines.        * glplib.h, glplib2.c, glplib4.c        The random-number generator was implemented. It is based on the        module GB_FLIB from the Stanford GraphBase originally developed        by Donald Knuth.        * glphbsm.c, glplpx8a.c, glpmps.c        All calls to fopen/fclose were replaced by corresponding calls        to ufopen/ufclose due to bug reports provided by Morten Welinder        <terra@gnu.org> and <jpark@sfwmd.gov>.        * glpmps.c        The code was made re-entrant.        * glplpx8b.c        API routine lpx_print_sens_bnds for bounds sensitivity analysis        contributed by Brady Hunsaker <hunsaker@engr.pitt.edu> was added        to the package. This feature is also available in glpsol via the        command-line option --bounds.        * contrib/jni/*.*        New version of GLPK JNI (Java Native Interface) contributed by        Chris Rosebrugh <cpr@pobox.com> was added to the package.        * contrib/deli/*.*        GLPK DELI (Delphi Interface) contributed by Ivo van Baren        <i.van.baren@freeler.nl> was added to the package.        * glplpx3.c        Default method to scale the problem was changed to equilibration        scaling (lp->scale = 1 in lpx_reset_parms).        * glplpx6a.c        Two minor (non-critical) typos were fixed due to report provided        by Andrew Hamilton-Wright <andrewhw@ieee.org>.        * glplpp2.c        An untested case (line 941) had been tested due to bug report        provided by Jiri Spitz <jiri.spitz@telecom.cz>.        * w32bc5.mak, w32vc6.mak, w32vc6d.mak, d32dmc.mak        Several makefiles were added to allow building GLPK library for        some non-GNU 32-bit platforms.Sat Aug 23 12:00:00 2003 Andrew Makhorin <mao@mai2.rcnet.ru>        * GLPK 4.1 has been released.        * glpmpl1.c, glpmpl3.c        Some bugs were fixed in the MathProg translator due to the bug        reports provided by Giles Thompson <gwpt1@cus.cam.ac.uk>:        conditional set expressions were incorrectly parsed;        dimen attribute was not set by default when a set was used        recursively in its own declaration;        logical expressions ... in if ... then ... else ... did not        work;        displaying set expressions did not free memory allocated for        temporary results.        * glpmpl3.c (reduce_terms)        Implementation of summation of linear forms over domain was        improved to reduce complexity of that operation from O(n*n) to        O(n*log n). The improvement was made due to a report provided        by Sebastien de Menten <sdementen@hotmail.com>.        * glplpx6a.c (line 1056), glpmip1.c (line 641)        Two minor bugs were fixed due to the bug report provided by        Kendall Demaree <kendal.demaree@verizon.net>.        * glplpx.h, glplpx6a.c        The method of one artificial variable implemented in the routine        lpx_prim_art and used on the phase I in the glpk simplex solver        has a serious defect: for some lp instances it erroneously        reports that the problem has no primal feasible solution. This        error appears when the column of the artificial variable, which        enters the basis to make it primal feasible, has large        constraint coefficients, that leads to small reduced costs of        non-basic variables and premature termination of the search,        i.e. to wrong conclusion that the problem has no primal feasible        solution. To avoid this defect the routine lpx_prim_feas was        included. It implements the method of implicit artifical        variables (based on minimization of the sum of infeasibilities),        which is a bit slower but much more robust. The routine        lpx_prim_feas having the same functionality now is used instead        the routine lpx_prim_art.        * glpinv.h, glpinv.c        The test used in the routine inv_update to detect low accuracy        after updating LU-factorization of the basis matrix was replaced        by a new, more robust test.        * glplpx6c.c        Selecting an active node to be solved next in the routine        btrack_bestp was changed. Now, if any integer feasible solution        has not been found yet, the routine chooses an active node which        has the minimal sum of integer infeasibilities.        * glpmip.h, glpmip1.c        The additional flag int_obj was included in the structure        MIPTREE used by the branch-and-bound. This flag is set in the        routine mip_create_tree and used in the routine is_better. It        means that the objective is integral, i.e. depends only on        integer variables with integer objective coefficients. The test        used in the routine check_integrality was also replaced by a        new, more reasonable one.        * glplpx1.c        A minor bug was fixed in the routine lpx_check_name.        * glpmpl.h, glpmpl4.c, glplpx8d.c        The flag skip_data was added to the parameter list of the        routine mpl_read_model. If this flag is set, the data section        in the model file is ignored. Corresponding change was made in        the routine lpx_read_model. Now, if both model and data files        are specified, the data section in the model file is ignored.        * glplpx8c.c        A minor bug (wrong format used for writing free columns) in the        routine lpx_write_lpt was fixed due to the bug report provided        by Bernhard Schmidt <schmidt@math.uni-augsburg.de>        * sample/glpsol.c        The command-line parameter --tmlim, which allows limiting the        solution time, was added.        * doc/lang.*, doc/refman.*        New edition of the GLPK documentation was included.        * java-binding/*.*        New version of the GLPK JNI (Java Native Interface) package was        included in the distribution.        * sample/lpglpk40.c        A non-trivial example was added. It allows using GLPK as a base        LP solver for Concorde, a program for solving Traveling Salesman        Problem (TSP). For details see comments in lpglpk40.c.        * sample/*.mod        Some examples of LP and MIP models written in GNU MathProg were        added.Tue May 06 12:00:00 2003 Andrew Makhorin <mao@mai2.rcnet.ru>        * GLPK 4.0 has been released.        * glpmpl.h, glpmpl1.c, glpmpl2.c, glpmpl3.c, glpmpl4.c        The model translator for the GNU MathProg modeling language was        implemented and included in the package.        * glplpx.h, glplpx8d.c        The api routine lpx_read_model, which is an interface to the        MathProg translator, was included in the package.        * glplpx.h, glplpx8a.c        The api routine lpx_print_prob for writing LP/MIP problem data        in plain text format was included in the package.        * sample/glpsol.c        New version of the GLPK stand-alone LP/MIP solver that supports        the GNU MathProg modeling language was implemented.        * doc/lang.latex, doc/lang.dvi, doc/lang.ps        The document "GLPK: Modeling Language GNU MathProg" was included        in the package.        * doc/refman.latex, doc/refman.dvi, doc/refman.ps        New edition of the GLPK Reference Manual was included in the        package.        * glplpx8c.c        A bug in the api routine lpx_write_lpt was fixed. Due to that        bug an addressing error occured in the routine if the objective        function has the non-zero constant term.        * glplan.h, glplan1.c, glplan2.c, glplan3.c, glplan4.c,        * glplan5.c, glplan6.c, glplan7.c, glplan8.c, glplpx8b.c        All modules of the translator for the GLPK/L modeling language        were removed from the package, because GLPK/L being completely        superseded by GNU MathProg is no more supported.Tue Mar 25 12:00:00 2003 Andrew Makhorin <mao@mai2.rcnet.ru>        * GLPK 3.3 has been released.        * glplpp.h, glplpp1.c, glplpp2.c        An implementation of the built-in LP presolver was added to the        package.        * glplpx.h        The flag presol was added to the structure LPX. This flag tells        the lpx_simplex whether the built-in LP presolver should be used        or not. By default this flag is off. Also three macros (namely        LPX_E_NOPFS, LPX_E_NODFS, and LPX_K_PRESOL) that concern using        the LP presolver were introduced.        * glplpx3.c, glplpx6a.c        These modules was changed to use the built-in LP presolver.        * sample/glpsol.c        Command line options --presol and --nopresol that concern using        the LP presolver were added to the stand-alone LP/MIP solver.        * glplan1.c        This module was changed to allow declaring sets like A[1:10] in        the models written in the GLPK/L modeling language.        * doc/refman.latex, doc/lang.latex        New editions of the documents "GLPK User's Guide" and "GLPK/L        Modeling Language" were included in the distribution.        * java-binding/*.*        The package GLPK JNI (Java Native Interface) implementing Java        binding for GLPK was included in the distribution. This package        was developed and programmed by Yuri Victorovich <yuri@gjt.org>.Tue Feb 18 12:00:00 2003 Andrew Makhorin <mao@mai2.rcnet.ru>        * GLPK 3.2.4 has been released.        * glplpx6b.c        The code was changed to allow auxiliary variables have non-zero        objective coefficients.        Also a minor bug was fixed (the constant term was not considered        on displaying the objective function value).