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wip lp seems to work so far...
author
Ian Jackson
<ijackson@chiark.greenend.org.uk>
Fri, 7 Mar 2014 16:01:09 +0000
(16:01 +0000)
committer
Ian Jackson
<ijackson@chiark.greenend.org.uk>
Fri, 7 Mar 2014 16:01:09 +0000
(16:01 +0000)
main.c
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diff --git
a/main.c
b/main.c
index bdcb18bfbb2c2fa54582aa14b383539e92a28e49..86b5d7329b49aae0bd85b1ac527d9534c58e9d4a 100644
(file)
--- a/
main.c
+++ b/
main.c
@@
-91,8
+91,8
@@
static void optimise(void) {
#define ADD_MATRIX_ENTRY(Y,X) ({ \
assert(next_matrix_entry < matrix_entries_size); \
#define ADD_MATRIX_ENTRY(Y,X) ({ \
assert(next_matrix_entry < matrix_entries_size); \
- matrix_entries_XY[0][next_matrix_entry] =
X;
\
- matrix_entries_XY[1][next_matrix_entry] =
Y;
\
+ matrix_entries_XY[0][next_matrix_entry] =
(X);
\
+ matrix_entries_XY[1][next_matrix_entry] =
(Y);
\
matrix_entries[next_matrix_entry] = 0; \
next_matrix_entry++; \
})
matrix_entries[next_matrix_entry] = 0; \
next_matrix_entry++; \
})
@@
-115,7
+115,7
@@
static void optimise(void) {
glp_set_obj_dir(prob, GLP_MAX);
glp_set_obj_coef(prob, X_minimum, 1);
glp_set_obj_dir(prob, GLP_MAX);
glp_set_obj_coef(prob, X_minimum, 1);
- for (i=0; i<n;
j
++) {
+ for (i=0; i<n;
i
++) {
for (j=0; j<m; j++) {
if (!(adjmatrix[i] & one_adj_bit(j)))
continue;
for (j=0; j<m; j++) {
if (!(adjmatrix[i] & one_adj_bit(j)))
continue;
@@
-139,53
+139,69
@@
static void optimise(void) {
assert(next_matrix_entry == matrix_entries_size);
assert(next_matrix_entry == matrix_entries_size);
- glp_load_matrix(prob,
next_matrix_entry
,
+ glp_load_matrix(prob,
matrix_entries_size-1
,
matrix_entries_XY[1], matrix_entries_XY[0],
matrix_entries);
int r = glp_simplex(prob, NULL);
matrix_entries_XY[1], matrix_entries_XY[0],
matrix_entries);
int r = glp_simplex(prob, NULL);
- switch (r) {
- case 0:;
-
- double got = glp_get_obj_val(prob);
- printf("%g", got);
- if (got <= best) {
- printf("\n");
- break;
- }
-
- best = got;
-
- if (best_prob) glp_delete_prob(best_prob);
- best_prob = prob;
-
- free(best_adjmatrix);
- best_adjmatrix = xalloc_adjmatrix();
- memcpy(best_adjmatrix, adjmatrix, sizeof(*adjmatrix)*n);
-
- printf(" <--\n");
- return;
+ printf(" simplex=%d", r);
#define OKERR(e) \
#define OKERR(e) \
- case e: printf(" " #e "\n"); break;
+ case e: printf(" " #e "\n"); goto out;
+#define BADERR(e) \
+ case e: printf(" " #e " CRASHING\n"); exit(-1);
+#define DEFAULT \
+ default: printf(" ! CRASHING\n"); exit(-1);
+
+ switch (r) {
OKERR(GLP_ESING);
OKERR(GLP_ECOND);
OKERR(GLP_EBOUND);
OKERR(GLP_EFAIL);
OKERR(GLP_ENOPFS);
OKERR(GLP_ENODFS);
OKERR(GLP_ESING);
OKERR(GLP_ECOND);
OKERR(GLP_EBOUND);
OKERR(GLP_EFAIL);
OKERR(GLP_ENOPFS);
OKERR(GLP_ENODFS);
-
-#define BADERR(e) \
- case e: printf(" " #e " CRASHING\n"); exit(-1);
BADERR(GLP_EBADB);
BADERR(GLP_EOBJLL);
BADERR(GLP_EOBJUL);
BADERR(GLP_EITLIM);
BADERR(GLP_ETMLIM);
BADERR(GLP_EBADB);
BADERR(GLP_EOBJLL);
BADERR(GLP_EOBJUL);
BADERR(GLP_EITLIM);
BADERR(GLP_ETMLIM);
+ case 0: break;
+ DEFAULT;
+ }
+
+ r = glp_get_status(prob);
+ printf(" status=%d", r);
+
+ switch (r) {
+ OKERR(GLP_NOFEAS);
+ OKERR(GLP_UNDEF);
+ BADERR(GLP_FEAS);
+ BADERR(GLP_INFEAS);
+ BADERR(GLP_UNBND);
+ case GLP_OPT: break;
+ DEFAULT;
+ }
- default: printf(" r=%d! CRASHING\n", r); exit(-1);
+ double got = glp_get_obj_val(prob);
+ printf(" %g", got);
+ if (got <= best) {
+ printf("\n");
+ goto out;
}
}
+ best = got;
+
+ if (best_prob) glp_delete_prob(best_prob);
+ best_prob = prob;
+
+ free(best_adjmatrix);
+ best_adjmatrix = xalloc_adjmatrix();
+ memcpy(best_adjmatrix, adjmatrix, sizeof(*adjmatrix)*n);
+
+ printf(" <--\n");
+ return;
+
+ out:
glp_delete_prob(prob);
}
glp_delete_prob(prob);
}