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Changelog

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning since its version 1.0.0.

Unreleased - Doc:Unreleased

1.4.0 - 2025-12-18

Added

  • PR41 Basic support of IIS extraction via Model::generateIIS. This requires that the plugin IISfinderGreedy is loaded (which is done by default) or any other plugin that can find an IIS. Example usage: 
    Model model = ...;
auto iis { model.generateIIS() };
std::cout << "Contradicting constraints are:\n";
for (const auto& consId : iis.consIds) {
  std::cout << "  " << consId << "\n";
}

Changed

  • PR40 Model::addSolution(), Model::setObjsense(), Model::setParam(), and Model::solve() are now const member functions.
  • PR38 Update to SCIP 10.0.0.

1.3.0 - 2025-10-08

Changed

  • PR37 Update to SCIP 9.2.3.

Added

  • PR36 New c'tors for LinExpr to allow use-cases like 
    const Var& [x1, x2] = ...
const array A_VARS = ...
const vector V_VARS = ...

LinExpr le(A_VARS); // new c'tor for std::array
le += V_VARS; // new c'tor for std::vector
le += {x1, x2}; // new c'tor for std::initializer_list
// all of them also available with a second argument for coefficients
  • PR31 Add InitialSolution and Model::addSolution.
  • PR28 Add Var::getVar.

1.2.0 - 2024-05-21

Changed

  • PR20 LinExpr can be constructed from any arithmetic type without requiring a static_cast.

Added

  • PR22 Add Model::getSolvingStatistic.
  • PR18 Add Var::isVoid.

Deprecated

  • PR22 Model::getPrimalbound(), use Model::getSolvingStatistic(statistics::PRIMALBOUND) instead.

1.1.0 - 2023-10-15

Changed

  • PR14 Using SCIP 8.0.4 now.

Added

  • PR12 Expose SCIP counterparts via Model::epsilon, Model::round, and Model::isZero.
  • PR11 IO methods Model::writeOrigProblem to write a model to a file or standard output.

Fixed

  • PR12 Added more const-correctness

1.0.2 - 2023-08-12

Fixed

  • PR7 Export symbols on Windows.

1.0.1 - 2023-08-10

Added

  • PR6 Added attributes description, package_type, topics, license, and homepage to conanfile.py.

Fixed

  • PR6 Downgraded minimum CMake version from 3.16 to 3.15.7

1.0.0 - 2023-08-09

Initial release