Sm_lps4_0_1_0.h

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/*
 * Lurupa, a library for verified linear programming.
 * Copyright (C) 2006 by Christian Keil
 *
 * This file is part of Lurupa.
 *
 * Lurupa is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
 * USA
 */

#ifndef SM_LPS4_0_1_0_H
#define SM_LPS4_0_1_0_H

#include <lurupa/Solver_module.h>
#include <lpkit.h>
/* lp_solve's definition of UNKNOWN clashes with libtool */
#undef UNKNOWN

class Lp_lp_solve : public Lp_solver {
public:
  Lp_lp_solve();
  ~Lp_lp_solve();

  lprec *lp;       
  int *mp_eq_con;  
  int *mp_le_con;  
};

extern "C" void get_func_pointers(Solver_module_interface &i);

class Sm_lps4_0_1_0 : public Solver_module {
public:
  static const char *get_version();

  static void print_version();
  static void print_brief_version();

  static bool init(Report *report);

  static double get_accuracy();

  static void print_options();

  static bool set_module_options(Lp *lp, int argc, char *argv[]);

  static bool read_lp(Lp *lp, FILE *in, const double relative_interval_radius, double &eta);

  static bool set_lp(Lp *lp, const double relative_interval_radius, double &eta);

  static bool solve_original(Lp *lp, double &optimal_value);

  static bool solve_primal_perturbed(const Primal_deflation &deflation, Lp *lp, 
                                     const int iteration);

  static bool solve_dual_perturbed(const VECTOR &deflation_c, Lp *lp, const int iteration);

  static void restore_primal(Lp *lp);

  static void restore_dual(Lp *lp);

private:
  static void WINAPI lps_log(void *lp, void *userhandle, char *buf);

  static void read_general_data(Lp *lp);

  static bool build_constraint_maps(int &c_eq, int &c_le, const int rows, const int cols, Lp *lp);

  static void find_free_variables(const int vars, Lp *lp);

  static void resize_lp(Lp *lp, const int cols, const int c_eq, const int c_le);

  static void read_lp_mat(const int rows, Lp *lp);

  static void read_right_hand_sides(Lp *lp);

  static void read_simple_bounds(Lp *lp);

  static void adjust_eta(double &eta, const Lp *lp);

  static void inflate_lp(Lp *lp, const double r);

  static bool transform_lp(Lp *lp, const double relative_interval_radius, double &eta);
  static void postprocess(Lp *lp, const int status);

  static bool solve_lp(Lp *lp);

  static bool read_primals(Lp *lp, const int cols);

  static bool read_duals(Lp *lp);

  static void primal_perturb(const Primal_deflation &d, const Lp *lp);

  static void dual_perturb(const VECTOR &d_c, const Lp *lp);

  Sm_lps4_0_1_0();
  ~Sm_lps4_0_1_0();
};

#endif /* ifdef SM_LPS4_0_1_0_H */

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