sc_to_sg_test1.c

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/*
 
  $Id: sc_to_sg_test1.c 1641 2016-03-02 08:20:19Z coelho $
 
  Copyright 1989-2016 MINES ParisTech
 
  This file is part of Linear/C3 Library.
 
  Linear/C3 Library 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 3 of the License, or
  any later version.
 
  Linear/C3 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 Linear/C3 Library.  If not, see <http://www.gnu.org/licenses/>.
 
*/
 
/* test de la conversion d'un systeme d'equations et d'inequations en
 * un systeme generateur
 *
 * Francois Irigoin, Decembre 1989
 */
 
#ifdef HAVE_CONFIG_H
    #include "config.h"
#endif
 
#include <stdio.h>
#include <string.h>
 
#include "boolean.h"
#include "vecteur.h"
#include "contrainte.h"
#include "sc.h"
 
#include "ray_dte.h"
#include "sommet.h"
#include "sg.h"
 
#include "polyedre.h"
 
main(argc,argv)
int argc;
char * argv[];
{
    Psysteme s;
    Spoly p;
    /* systeme generateur sg */
    Ptsg sg; 
    FILE * f;
    char * filename = "stdin";
 
    if(argc==1) {
        f = stdin;
        fprintf(stderr,"Lecture sur stdin\n");
    }
    else if(argc==2) {
        filename = strdup(argv[1]);
        if((f = fopen(filename,"r")) == NULL) {
            fprintf(stderr,"Ouverture du fichier %s impossible\n",
                    filename);
            exit(4);
        }
    }
    else {
        fprintf(stderr,"Usage: sc_fscan_print [filename]\n");
        exit(1);
    }
 
    /* lecture du systeme */
    if(sc_fscan(f,&s)) {
        fprintf(stderr,"syntaxe correcte dans %s\n",filename);
        sc_fprint(stdout,s, variable_default_name);
    }
    else {
        fprintf(stderr,"erreur de syntaxe dans %s\n",filename);
        exit(1);
    }
 
    /* conversion */
    sg = sc_to_sg(s);
    sg_fprint(stdout, sg, variable_default_name);
 
    /* construction du polyedre (sc, sg) */
    p.sc = s;
    p.sg = sg;
    elim_red(p);
    printf("apres elimination de redondance\n");
    sg_fprint(stdout, p.sg, variable_default_name);
}