Release series 1.1.x has reached its end of life.

LEMON 1.1.6 released (44670dddcfcb tagged as r1.1.6)

Update NEWS file

Remove -Werror form AM_INIT_AUTOMAKE

Merge bugfix #439 to branch 1.1

Clarification in biNodeConnected() doc (#439)

Fix biNodeConnected() function (#439)

Merge #294 to branch 1.1

Add explicit namespace to ignore_unused_variable_warning() usages (#294)

Merge further fixes #470 to branch 1.1

Further fixes for gcc version 3.3 and 4.3 (#470)

Unused local typedefs warning pragma is only applied to gcc>=4.8 (#470)

Merge bugfix #461 to branch 1.1

Bugfix in assert.h (#461)

Merge fix #470 to branch 1.1

Suppress 'unused local typedefs' warnings, and resolve others (#470)

Merge bugfix #445 to branch 1.1

Fix missing initialization in CplexEnv::CplexEnv() (#445)

Merge bugfix #453 to branch 1.1

Avoid GCC 4.7 compiler warnings (#453)

Merge bugfix #440 to branch 1.1

Fix a bug + remove redundant typedefs in dimacs-solver (#440)

Merge #449 to branch 1.1

Fix clang compilation warnings and errors (#449)

Bugfix in adaptor_test.cc (#448)

Merge bugfix #447 to branch 1.1

Bugfix in AllArcLookUp<> (#447)

Merge bugfix #444 to branch 1.1

Bugfix in path copy constructors and assignment operators (#444)

Merge bugfix #441 to branch 1.1

Fix buggy reinitialization in _solver_bits::VarIndex::clear() (#441)

- In addition, rows.clear() and cols.clear() are moved up to LpBase::clear()

Merge Intel C++ compatibility fixes to branch 1.1

Intel C++ compatibility fixes

Merge LP interface updates to branch 1.1

Make CBC interface compatible with latest CBC releases

CBC now uses the CLP backend unconditionally

Update CPLEX lookup

- References to explicit CPLEX version 9.1 have been removed
- Library file name must either be 'cplex.a' or 'cplex.dll'

Merge #432 and #433 to branch 1.1

Support shared library build (#433)

Add missing doc/template.h to release tarball (#432)

Merge head merging to branch 1.1

Merge

Merge

Merge

Merge

Merge

LEMON 1.1.5 released (74e2dac774c8 tagged as r1.1.5)

Unify sources

Update NEWS file

Merge bugfix #430 to branch 1.1

Fix LpBase::Constr two-side limit bug (#430)

Merge #428 and #429 to branch 1.1

Fix VS warnings (#429)

Add lemon/lemon.pc.cmake to the release tarball (#428)

LEMON 1.1.4 released (f1398882a928 tagged as r1.1.4)

Unify sources

Update NEWS file

Merge AUTHORS file update to branch 1.1

Update the AUTHORS file

Merge #382 to branch 1.1

Allow lgf file without Arc maps (#382)

A single '-' character in the @arcs sectio header indicates that
there is no arc map.

Merge #419 to branch 1.1

Do not look for COIN_VOL libraries

Also search for coin libs under ${COIN_ROOT_DIR}/lib/coin (#419)

Build of mip_test and lp_test precede the running of the tests (#419)

Merge GLPK fix #337 with CMAKE improvements

Merge #418 to branch 1.1

Better Win CodeBlock/MinGW support (#418)
- Remove -ansi compilation flag
- Don't include sys/times.h when WIN32 is defined

Merge #416 to branch 1.1

Support tests with valgrind (#416)

Merge #404 to branch 1.1

Remove doc header (show version number on the main page) (#404)

Update Doxygen config files + enable search (#404)

Merge CMAKE and Doxygen backports to branch 1.1

Backport the CMAKE related changesets from the main branch

[e20fecd1945f] Add check target for CMake (#388)
[e74b5db4f2c6] Put the output of chg-len.py in the version string (#389)
[7d166b8b8018] Safer call of ./scripts/chg-len.py on Windows (#389)
[659ba4805a48] Make CMAKE config more consistent with configure.ac (#390)
[63e4468c680e] Add 'Maintainer' CMAKE build type (#388, #390)
[a725503acfe9] Allow CPACK configuration on all platforms
[10242c611190] Create and install lemon.pc (#393)
[48e29534cf03] The deafult target doesn't build lp_test and mip_test (#388)
[0fbbdd578c06] Full path for DoxygenLayout.xml in Doxyfile.in (#395)
[481496e6d71f] SOURCE_BROWSER Doxygen switch is configurable from CMAKE (#395)
[09282720100b] update-external-tags CMAKE target (#395)

Backport [53bea38f71cb] 'Update Doxygen configuration file'

Merge bugfix #414 to branch 1.1

Fix wrong initialization in Preflow (#414)

Merge bugfix #392 to branch 1.1

Bug fix in Dfs::start(s,t) (#392)

LEMON 1.1.3 released (dfdb58f52f02 tagged as r1.1.3)

Update NEWS file

Merge bugfix #371 to branch 1.1

Merge bugfix #372 to branch 1.1

Fix critical bug in preflow (#372)

The wrong transition between the bound decrease and highest active
heuristics caused the bug. The last node chosen in bound decrease mode
is used in the first iteration in highest active mode.

Bug fix in (di)graphCopy() (#371)

The target graph is cleared before adding nodes and arcs/edges.

Merge bugfix #368 to branch 1.1

Fix the usage of min() (#368)

Merge bugfix #366 to branch 1.1

Fix PredMatrixMapPath::empty() (#366)

Fix PredMapPath::empty() (#366)

Merge bugfix #364 to branch 1.1

Add missing UndirectedTags (#364)

Merge bugfix #356 to branch 1.1

Fix multiple execution bug in weighted matchings (#356)

This chgset also redoes the fix of [28c7ad6f8d91] and its backpont to 1.1,
[268a052c3043].

LEMON 1.1.2 released (86a880ba752d tagged as r1.1.2)

Update NEWS file

Merge bugfixes #323 to branch 1.1

Remove unnecessary integer requirement in Suurballe (#323)

Bug fix in Suurballe (#323)

Merge 4 backouts (#50, #312)

Back out 4 changesets (#50, #312)
- 532697c9fa53
- bb8c4cd57900
- 9f529abcaebf
- 703ebf476a1d

Merge bugfix #336 to branch 1.1

Fix the date field comment of graphToEps() output (#336)

Merge bugfix #337 to branch 1.1

Use void* like LPX object (#337)

Fix clear() function in ExtendFindEnum (#335), backport of [28c7ad6f8d91]

Merge bugfix #330 to branch 1.1

Merge

Bug fix in map_extender.h (#330)

Also check ReferenceMapTag in concept checks (#312)

Unification of names in heaps (#50)

Simplified implementation of bucket heaps (#50)

Port remaining heaps from SVN -r 3509 (#50)

- FibHeap
- RadixHeap
- BucketHeap
- SimpleBucketHeap

Merge fix #321

Use pathCopy(from,to) instead of copyPath(to,from) (#321)
The old version is kept as a deprecated alternative.

Merge bugfix #322

Distribute LEMONConfig.cmake.in (#322)

Merge bugfix in #250

Fix in pathSource() and pathTarget() (#250)
and extend the doc.

Merge #317

Remove unnecessary OsiCbc dependency (#317)

Fix (and improve) error message in mip_test.cc (#317)

LEMON 1.1.1 released (78b7231f0b2e tagged as r1.1.1)

Update NEWS file

Merge bugfix #307

Bug fix in Preflow and Circulation (#307)

Merge bugfix #311

Merge bugfix #302

Remove duplicate list_graph.h entry from source list (#308)

Add missing 'explicit' keywords (#311)

Merge bugfix #302

Fix the implementation and doc of CrossRefMap (#302)

- Handle multiple values correctly with std::multimap.
- Clarify the problematic points in the doc.
- Add some basic tests for the class.

Merge several CMAKE related improvements

Set the version to 'hg-tip' if everything fails

Minor CMake improvements

* Use the empty ELSE(), ENDIF(), ENDMACRO(), etc. syntax since this improves
readability and requires less typing.
* Use FIND_PACKAGE() instead of INCLUDE().
* Use the value of CMAKE_COMMAND variable instead of cmake, since this works
even if cmake is not in the PATH.

Put the version string into config.h

Also make it possible to set the version using the LEMON_VERSION environment
variable, and use the hg revision as version string in case this variable is
unset.

Fix the check for the 'long long' type

Change the label of the html project in Visual Studio

Generate and install LEMONConfig.cmake

Add tools/CMakeLists.txt to the tarball

Rename documentation install folder from 'docs' to 'html'

Remove duplications from doc/CMakeLists.txt

Merge fix #295

Suppress MSVC warnings using pragmas (#295)

LEMON 1.1 released (06f816565bef tagged as r1.1)

Merge various fixes

Add artificial addNode() function to the arc/edge set classes

Avoid Intel C++ Compiler warnings

Disable Visual Studio warning C4503

Add lemon/config.h.cmake to the tarball

Resolve GCC-4.4 warnings & fix ambiguous op=() in graph_components.h

Merge

Update NEWS file

Extend min cost flow test file + check dual costs (#291)

Fix the GEQ/LEQ handling in NetworkSimplex + improve doc (#291)

- Fix the optimality conditions for the GEQ/LEQ form.
- Fix the initialization of the algortihm. It ensures correct
solutions and it is much faster for the inequality forms.
- Fix the pivot rules to search all the arcs that have to be
allowed to get in the basis.
- Better block size for the Block Search pivot rule.
- Improve documentation of the problem and move it to a
separate page.

Merge

Remove bits/base_extender.h, which is not used at all (#288)

Move list and edge sets to the graph module (#290)

Merge

Change the explanation of the acronym LEMON (#289)

Change Graph::Edge -> Graph::Arc inheritance to conversion (#283)

Change Undirector::Edge -> Undirector::Arc inheritance to conversion (#283)

Fix the faulty merge of unify-sources.sh in [586b65073025]

Doc fixes for lgf-gen (#282)

Merge

Merge

Small doc improvements (#257)

Fix glp_prob definition (#286)

Add a test file for the connectivity functions (#285)
The Euler tools have a separate test file.

Doc improvements and fixes for connectivity tools (#285)
And add loopFree(), parallelFree(), simpleGraph() to the module doc.

Bug fixes in connectivity.h (#285)

- Bug fix in tree().
- Rename simpleDigraph() to simpleGraph() (it works for both
directed and undirected graphs).
- Possibly faster implementation for parallelFree() and
simpleGraph().

Remove references of missing tools (#257)

Release branch 1.1 created

Merge

Add the solver libraries to lemon.pc.in (#281)

Merge

Resolve gcc-4.3 warning in lemon/network_simplex.h

Less map copying in NetworkSimplex (#234)

- The graph is copied in the constructor instead of the init() function.
It must not be modified after the class is constructed.
- The maps are copied once (instead of twice).
- Remove FlowMap, PotentialMap typedefs and flowMap(), pontentialMap()
setter functions.
- flowMap() and potentialMap() query functions copy the values into the
given map (reference) instead of returning a const reference to a
previously constructed map.

Rename Flow to Value in the flow algorithms (#266)

We agreed that using Flow for the value type is misleading, since
a flow should be rather a function on the arcs, not a single value.

This patch reverts the changes of [dacc2cee2b4c] for Preflow and
Circulation.

Support negative costs and bounds in NetworkSimplex (#270)

* The interface is reworked to support negative costs and bounds.
- ProblemType and problemType() are renamed to
SupplyType and supplyType(), see also #234.
- ProblemType type is introduced similarly to the LP interface.
- 'bool run()' is replaced by 'ProblemType run()' to handle
unbounded problem instances, as well.
- Add INF public member constant similarly to the LP interface.
* Remove capacityMap() and boundMaps(), see also #266.
* Update the problem definition in the MCF module.
* Remove the usage of Circulation (and adaptors) for checking feasibility.
Check feasibility by examining the artifical arcs instead (after solving
the problem).
* Additional check for unbounded negative cycles found during the
algorithm (it is possible now, since negative costs are allowed).
* Fix in the constructor (the value types needn't be integer any more),
see also #254.
* Improve and extend the doc.
* Rework the test file and add test cases for negative costs and bounds.

Merge

Do not distribute lemon/config.h and fix its bad include by core.h (#280)

Check the version number in FindGLPK (#277)

Add GLPK_ROOT_DIR variable to FindGLPK (#277)

Link libm and libpthread if using CPLEX (#277)

Add CPLEX_ROOT_DIR variable to FindCPLEX (#277)

Look for COIN libraries with and without the lib prefix too (#277)

This is necessary because on Windows when built using autotools the COIN
libraries are named in UNIX style, i.e. libCbc.lib insetad of Cbc.lib.

Merge

Merge

Remove superfluous HAVE_CONFIG_H (#278)

Add cbc.h to lemon/Makefile.am (#279)

Fix Makefile.am EXTRA_DIST (#276)

Merge

Merge and extend the fix of #275

Prefix macro names with LEMON_ in lemon/config.h (#275)

Install lemon/config.h (#274)

unify-sources.sh refresh the dates according to the last modification

Merge

Modify the interface of MinCostArborescence + improvements (#267)

- Rename arborescenceValue() to arborescenceCost().
- Rename DefXyz template named paramaters to SetXyz.
- Rearrange public functions (for better doc).
- Doc improvements.
- Extend the test file with interface checking.

Merge

Modify the interface of Suurballe (#266, #181)

- Move the parameters s and t from the constructor to the run()
function. It makes the interface capable for multiple run(s,t,k)
calls (possible improvement in the future) and it is more similar
to Dijkstra.
- Simliarly init() and findFlow(k) were replaced by init(s) and
findFlow(t,k). The separation of parameters s and t is for the
future plans of supporting multiple targets with one source node.
For more information see #181.
- LEMON_ASSERT for the Length type (check if it is integer).
- Doc improvements.
- Rearrange query functions.
- Extend test file.

Support infinite bounds in Circulation + fixes (#270, #266)

- Support infinite capacities.
- Bug fix in upperMap().
- Fixes and improvements in the documentation.

FindCOIN for CMake (#256)

FindCPLEX for CMake (#256)

FindGLPK improvements (#256)

Merge

Fix and uniform the usage of Graph and Parent typedefs (#268)

- Rename Graph typedefs to GraphType in the implementation of graph
maps and MapExtender to prevent conflicts (especially using VS).
They are not public.
- Make Parent typedefs private in all classes.
- Replace Digraph with Graph in some places
(fix faulty renamings of the script).
- Use Graph and Digraph typedefs (more) consequently.

VS compatibility fix (#268)

Exploit the changes of #190 in MCF test file (#234, #190)

Support LEQ and GEQ supply constraints in dimacs-solver (#234, #219)

Bug fix in NetworkSimplex (#234)

Fix usage of sqrt() (#268)

Merge and fix

Slightly modify the interface of Circulation and Preflow (#266)
in order to synchronize them to the interface of NetworkSimplex.

Circulation:
- The "delta" notation is replaced by "supply".
- lowerCapMap(), upperCapMap() are renamed to lowerMap() and upperMap().
- Value is renamed to Flow.

Preflow:
- Value is renamed to Flow.

Support >= and <= constraints in NetworkSimplex (#219, #234)

By default the same inequality constraints are supported as by
Circulation (the GEQ form), but the LEQ form can also be selected
using the problemType() function.

The documentation of the min. cost flow module is reworked and
extended with important notes and explanations about the different
variants of the problem and about the dual solution and optimality
conditions.

Support real types + numerical stability fix in NS (#254)

- Real types are supported by appropriate inicialization.
- A feature of the XTI spanning tree structure is removed to ensure
numerical stability (could cause problems using integer types).
The node potentials are updated always on the lower subtree,
in order to prevent overflow problems.
The former method isn't notably faster during to our tests.

Separate types for flow and cost values in NetworkSimplex (#234)

Support multiple run() calls in NetworkSimplex (#234)

Rework the interface of NetworkSimplex (#234)

The parameters of the problem can be set with separate functions
instead of different constructors.

Use XTI implementation instead of ATI in NetworkSimplex (#234)

XTI (eXtended Threaded Index) is an imporved version of the widely
known ATI (Augmented Threaded Index) method for storing and updating
the spanning tree structure in Network Simplex algorithms.

In the ATI data structure three indices are stored for each node:
predecessor, thread and depth. In the XTI data structure depth is
replaced by the number of successors and the last successor
(according to the thread index).

Internal restructuring and renamings in NetworkSimplex (#234)

Support min cost flow in dimacs-solver (#234)

Port NetworkSimplex from SVN -r3520 (#234)

Merge

Merge

Add more docs to LGF function interface (#109)

Fix in HaoOrlin (#264)

Improvements and fixes for the minimum cut algorithms (#264)

Merge

Rename max_matching.h to matching.h (#265)

Extend and modify the interface of matching algorithms (#265)

- Rename decomposition() to status() in MaxMatching.
- Add a new query function statusMap() to MaxMatching.
- Add a new query function matchingMap() to all the three classes.
- Rename matchingValue() to matchingWeight() in the weighted
matching classes.

Improvements for the Euler tools and the test file (#264)

Bug fix in the Euler iterators (#264)
Handle the case when the first node is isolated.

Imporvements for the matching algorithms (#264)

Merge

Merge

Rotate and enlarge some images (#262)

Add images + fixes in the doc of connectivity tools (#262)

Improve test files for some algorithms (#263)

Small doc improvements (#263)