glp_prob *prob = 0;
int i, j, totalfrags;
+#define HAVE_PRINTED ({ \
+ if (!doprint) { doprint = 1; goto retry_with_print; } \
+ })
+ retry_with_print:
+#define PRINTF if (!doprint) ; else printf /* bodgy */
+
for (i=0, totalfrags=0; i<n; i++) {
int frags = count_set_adj_bits(adjmatrix[i]);
totalfrags += frags;
- if (doprint) printf("%"PRADJ" ", adjmatrix[i]);
+ PRINTF("%"PRADJ" ", adjmatrix[i]);
double maxminsize = (double)m / frags;
- if (maxminsize < best) {
- if (doprint) printf(" too fine");
+ if (maxminsize <= best) {
+ PRINTF(" too fine");
goto out;
}
}
/* x_minimum >= 0 */
glp_set_col_bnds(prob, X_minimum, GLP_LO, 0, 0);
+ glp_set_col_name(prob, X_minimum, "minimum");
/* objective is maximising x_minimum */
glp_set_obj_dir(prob, GLP_MAX);
/* x_morefrag_i_j >= 0 */
int X_morefrag_i_j = glp_add_cols(prob, 1);
glp_set_col_bnds(prob, X_morefrag_i_j, GLP_LO, 0, 0);
+ if (doprint) {
+ char buf[255];
+ snprintf(buf,sizeof(buf),"mf %d,%d",i,j);
+ glp_set_col_name(prob, X_morefrag_i_j, buf);
+ }
/* x_total_i += x_morefrag_i_j */
/* x_total_j += x_morefrag_i_j */
matrix_entries);
int r = glp_simplex(prob, NULL);
- if (doprint) printf(" simplex=%d", r);
+ PRINTF(" glp=%d", r);
#define OKERR(e) \
- case e: if (doprint) printf(" " #e ); goto out;
+ case e: PRINTF(" " #e ); goto out;
#define BADERR(e) \
- case e: if (doprint) printf(" " #e " CRASHING"); exit(-1);
+ case e: HAVE_PRINTED; printf(" " #e " CRASHING\n"); exit(-1);
#define DEFAULT \
- default: if (doprint) printf(" ! CRASHING"); exit(-1);
+ default: HAVE_PRINTED; printf(" ! CRASHING\n"); exit(-1);
switch (r) {
OKERR(GLP_ESING);
BADERR(GLP_EOBJUL);
BADERR(GLP_EITLIM);
BADERR(GLP_ETMLIM);
+ BADERR(GLP_EINSTAB);
+ BADERR(GLP_ENOCVG);
case 0: break;
DEFAULT;
}
r = glp_get_status(prob);
- if (doprint) printf(" status=%d", r);
+ PRINTF(" status=%d", r);
switch (r) {
OKERR(GLP_NOFEAS);
}
double got = glp_get_obj_val(prob);
- if (doprint) printf(" %g", got);
+ PRINTF(" %g", got);
if (got <= best)
goto out;
- if (!doprint) {
- optimise(1);
- goto out;
- }
+ HAVE_PRINTED;
best = got;
prep();
iterate();
printf("\n");
+ if (best_prob)
+ glp_print_sol(best_prob,"/dev/stdout");
if (ferror(stdout) || fclose(stdout)) { perror("stdout"); exit(-1); }
return 0;
}