glpk_solver.hpp

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/*
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 *
 *             ***********************************************
 *                              PandA Project
 *                     URL: http://panda.dei.polimi.it
 *                       Politecnico di Milano - DEIB
 *                        System Architectures Group
 *             ***********************************************
 *              Copyright (C) 2004-2024 Politecnico di Milano
 *
 *   This file is part of the PandA framework.
 *
 *   The PandA framework is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 3 of the License, or
 *   (at your option) any later version.
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 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
#ifndef GLPK_SOLVER_HPP
#define GLPK_SOLVER_HPP

#include "custom_map.hpp"
#include "meilp_solver.hpp"
#include <iosfwd>
#include <string>

#include "config_HAVE_GLPK.hpp"
#include "config_HAVE_GLPK_NESTED.hpp"
#if HAVE_GLPK_NESTED
#include <glpk/glpk.h>
#else
#include <glpk.h>
#endif

class glpk_solver : public meilp_solver
{
 private:
   glp_prob* lp;

   glp_smcp* scp;

   glp_iocp* iocp;

   glp_bfcp* bfcp;

   bool mip_solution;
   void set_all_bounds() override;

   void set_all_bounds_new();

   void print(std::ostream& os) override;

 public:
   glpk_solver();
   ~glpk_solver() override;
   void make(int nvars) override;
   int solve() override;
   int solve_ilp() override;
   void add_row(std::map<int, double>& i_coeffs, double i_rhs, ilp_sign i_sign, const std::string& name) override;
   void objective_add(std::map<int, double>& i_coeffs, ilp_dir dir) override;

   void set_int(int i) override;
   void get_vars_solution(std::map<int, double>& vars) const override;
   int get_number_constraints() const override;
   int get_number_variables() const override;
   void set_col_name(int var, const std::string& name) override;

   std::string get_col_name(int var) override;

   int add_empty_column() override;

   void print_to_file(const std::string& file_name) override;
};
#endif