polylib: ehrhart_quick_apx.c Source File

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# ehrhart_quick_apx.c

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    00001 #include <stdio.h>
    00002 #include <string.h>
    00003 #include <stdlib.h>
    00004
    00005 #include <polylib/polylib.h>
    00006
    00007 int main( int argc, char **argv)
    00008 {
    00009   int i;
    00010   const char **param_name = NULL;
    00011   Matrix *C1, *P1;
    00012   Polyhedron *P, *C;
    00013   Enumeration *e, *en;
    00014
    00015   Matrix * Validity_Lattice;
    00016   int nb_parms;
    00017
    00018 #ifdef EP_EVALUATION
    00019   Value *p, *tmp;
    00020   int k;
    00021 #endif
    00022
    00023   P1 = Matrix_Read();
    00024   C1 = Matrix_Read();
    00025   nb_parms = C1->NbColumns-2;
    00026   if(nb_parms < 0) {
    00027     fprintf( stderr, "Not enough parameters !\n" );
    00028     exit(0);
    00029   }
    00030
    00031    /* Read the name of the parameters */
    00032   param_name = Read_ParamNames(stdin,nb_parms);
    00033
    00034   /* compute a polynomial approximation of the Ehrhart polynomial */
    00035   printf("============ Ehrhart polynomial quick approximation ============\n");
    00036   e = Ehrhart_Quick_Apx(P1, C1, &Validity_Lattice, 1024);
    00037
    00038   Matrix_Free(C1);
    00039   Matrix_Free(P1);
    00040
    00041   show_matrix(Validity_Lattice);
    00042   for( en=e ; en ; en=en->next ) {
    00043     Print_Domain(stdout,en->ValidityDomain, param_name);
    00044     print_evalue(stdout,&en->EP, param_name);
    00045     printf( "\n-----------------------------------\n" );
    00046   }
    00047
    00048 #ifdef EP_EVALUATION
    00049   if( isatty(0) && nb_parms != 0)
    00050   {  /* no tty input or no polyhedron -> no evaluation. */
    00051     printf("Evaluation of the Ehrhart polynomial :\n");
    00052     p = (Value *)malloc(sizeof(Value) * (nb_parms));
    00053     for(i=0;i<nb_parms;i++)
    00054       value_init(p[i]);
    00055     FOREVER {
    00056       fflush(stdin);
    00057       printf("Enter %d parameters : ",nb_parms);
    00058       for(k=0;k<nb_parms;++k) {
    00059         scanf("%s",str);
    00060         value_read(p[k],str);
    00061       }
    00062       fprintf(stdout,"EP( ");
    00063       value_print(stdout,VALUE_FMT,p[0]);
    00064       for(k=1;k<nb_parms;++k) {
    00065         fprintf(stdout,",");
    00066         value_print(stdout,VALUE_FMT,p[k]);
    00067       }
    00068       fprintf(stdout," ) = ");
    00069       value_print(stdout,VALUE_FMT,*(tmp=compute_poly(en,p)));
    00070       free(tmp);
    00071       fprintf(stdout,"\n");
    00072     }
    00073   }
    00074 #endif /* EP_EVALUATION */
    00075
    00076   while( e )
    00077     {
    00078       free_evalue_refs( &(e->EP) );
    00079       Polyhedron_Free( e->ValidityDomain );
    00080       en = e ->next;
    00081       free( e );
    00082       e = en;
    00083     }
    00084   Free_ParamNames(param_name, nb_parms);
    00085   return 0;
    00086 }