https://sourceforge.net/p/winglpk/news/2009-05-06T02:55:42ZRecent posts to news2009-05-06T02:55:42Z2009-05-06T02:55:42Zxypronhttps://sourceforge.net/u/xypron/https://sourceforge.net0dd683486b3aa0f50aa8dca0d39f19885372f29f

GLPK 4.38 has been released. API routines glp\_read\_mps and glp\_write\_mps were improved. Some improvements were made in the dual simplex routines. Two external software modules AMD and COLAMD were included in the distribution \(for more details please see src/amd/README and src/colamd/README\). Now they are used in the interior-point solver to reorder the matrix prior to Cholesky factorization. API routine glp\_ipt\_status may return two new statuses due to changes in the routine glp\_interior. For details please see the reference manual included in the distribution. A minor bug was fixed in the graph/network routines.

2009-03-29T19:28:04Z2009-03-29T19:28:04Zxypronhttps://sourceforge.net/u/xypron/https://sourceforge.netbb922cd411eec14af5d8ad0017d9c2f77ed5857b

GLPK-4.37 has been released. The 0-1 Feasibility Pump heuristic was included in the GLPK integer optimizer glp\_intopt. A bug was fixed in the interior-point solver \(glp\_interior\) to correctly compute dual solution components when the problem is scaled.

2009-02-07T18:23:35Z2009-02-07T18:23:35Zxypronhttps://sourceforge.net/u/xypron/https://sourceforge.net2cd2365c5e8772c3c8703e489438ffd66d16f98e

Release 4.36 of GLPK has some bug fixes. In this release you will find libriries \(glpk-4.36-java.dll, glpk.jar\) which allow compiling and running java applications using the GLPK library.

2009-02-01T22:26:23Z2009-02-01T22:26:23Zxypronhttps://sourceforge.net/u/xypron/https://sourceforge.net16a667855b0eb16985d39af8fa85401b5604c404

GLPK 4.35 \(release date: Jan 09, 2009\) The following new API routines were added to the package: glp\_create\_graph create graph glp\_set\_graph\_name assign \(change\) graph name glp\_add\_vertices add new vertices to graph glp\_add\_arc add new arc to graph glp\_erase\_graph erase graph content glp\_delete\_graph delete graph glp\_read\_mincost read minimum cost flow problem data in DIMACS format glp\_write\_mincost write minimum cost flow problem data in DIMACS format glp\_mincost\_lp convert minimum cost flow problem to LP glp\_netgen Klingman's network problem generator glp\_gridgen grid-like network problem generator glp\_read\_maxflow read maximum flow problem data in DIMACS format glp\_write\_maxflow write maximum flow problem data in DIMACS format glp\_maxflow\_lp convert maximum flow problem to LP glp\_rmfgen Goldfarb's maximum flow problem generator For detailed description of these new routines and related data structures see chapter "Graph and Network API Routines" in a new edition of the reference manual included in the distribution. A minor change were made in the internal routine xputc. A minor bug was fixed in the internal routine mpl\_fn\_time2str.

2008-12-05T22:56:59Z2008-12-05T22:56:59Zxypronhttps://sourceforge.net/u/xypron/https://sourceforge.netd3bfc706ef4f52649a1592268edaa2ce5bad4830

he GNU MathProg modeling language was supplemented with three new built-in functions: gmtime obtaining current calendar time str2time converting character string to calendar time time2str converting calendar time to character string For detailed description of these functions see Appendix A in the document "Modeling Language GNU MathProg", a new edition of which was included in the distribution. A bug was fixed in the MIP solver. Thanks to Nigel Galloway for bug report. A new makefile was added to build the GLPK DLL with Microsoft Visual Studio Express 2008 for 64-bit Windows.

2008-11-03T22:48:09Z2008-11-03T22:48:09Zxypronhttps://sourceforge.net/u/xypron/https://sourceforge.net9c877fab677f422e8c0a5902fe273d51d8710867

Version GLPK-4.33 has been released. You can find executables for 64- and 32-bit Windows in the download section. Files available: glpk-4.33.pdf - general and API documentation glpk-4.33.tar.gz - source with documentation glpsol-4.33\_64bit.zip - 64 bit executable with stand alone solver glpsol-4.33\_64bit.zip.md5 - checksum file glpsol-4.33.zip - 32 bit executable with stand alone solver glpsol-4.33.zip.md5 - checksum file gmpl-4.30.pdf - GNU MathProg modeling language documentation tables-4.33.pdf - documentation for table statement and SQL connectivity