tsp.h

蚁群算法解决TSP问题的源代码

/*

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      AAAAAA  CC     OO  OO    TT     SSSS   PPPPP
      AA  AA  CC     OO  OO    TT        SS  PP
      AA  AA   CCCC   OOOO     TT    SSSSS   PP

######################################################
##########    ACO algorithms for the TSP    ##########
######################################################

      Version: 1.0
      File:    TSP.h
      Author:  Thomas Stuetzle
      Purpose: TSP related procedures, distance computation, neighbour lists
      Check:   README and gpl.txt
      Copyright (C) 2002  Thomas Stuetzle
*/

/***************************************************************************

    Program's name: acotsp

    Ant Colony Optimization algorithms (AS, ACS, EAS, RAS, MMAS, BWAS) for the 
    symmetric TSP 

    Copyright (C) 2004  Thomas Stuetzle

    This program 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 2 of the License, or
    (at your option) any later version.

    This program 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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    email: stuetzle no@spam informatik.tu-darmstadt.de
    mail address: Universitaet Darmstadt
                  Fachbereich Informatik
                  Hochschulstr. 10
                  D-64283 Darmstadt
		  Germany

***************************************************************************/


#define RRR            6378.388
#ifndef PI             /* as in stroustrup */
#define PI             3.14159265358979323846
#endif

struct point {
  double x;
  double y;
};

struct problem{
  char          name[LINE_BUF_LEN];      	 /* instance name */
  char          edge_weight_type[LINE_BUF_LEN];  /* selfexplanatory */
  long int      optimum;                /* optimal tour length if known, otherwise a bound */
  long int      n;                      /* number of cities */
  long int      n_near;                 /* number of nearest neighbors */
  struct point  *nodeptr;               /* array of structs containing coordinates of nodes */
  long int      **distance;	        /* distance matrix: distance[i][j] gives distance 
					   between city i und j */
  long int      **nn_list;              /* nearest neighbor list; contains for each node i a
                                           sorted list of n_near nearest neighbors */
};

extern struct problem instance;

long int n;          /* number of cities in the instance to be solved */

long int  (*distance)(long int, long int);  /* pointer to function returning distance */

long int round_distance (long int i, long int j);

long int ceil_distance (long int i, long int j);

long int geo_distance (long int i, long int j);

long int att_distance (long int i, long int j);

long int compute_tour_length( long int *t );

long int **compute_distances(void);

long int ** compute_nn_lists ( void );