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#include "fracture.h"
double *get_corr(net_t *instance, uint_t **dists, cholmod_common *c) {
uint_t nv = instance->graph->dnv;
uint_t ne = instance->graph->ne;
uint_t *ev = instance->graph->dev;
bool nulldists = false;
if (dists == NULL) {
dists = graph_dists(instance->graph, false);
nulldists = true;
}
double *corr = calloc(nv, sizeof(double));
uint_t *numat = calloc(nv, sizeof(uint_t));
for (uint_t i = 0; i < ne; i++) {
uint_t v1 = ev[2 * i];
uint_t v2 = ev[2 * i + 1];
for (uint_t j = 0; j < ne; j++) {
uint_t v3 = ev[2 * j];
uint_t v4 = ev[2 * j + 1];
uint_t dist1 = dists[v1][v3];
uint_t dist2 = dists[v1][v4];
uint_t dist3 = dists[v2][v3];
uint_t dist4 = dists[v2][v4];
uint_t dist = (dist1 + dist2 + dist3 + dist4) / 4;
corr[dist] += instance->fuses[i] && instance->fuses[j];
numat[dist]++;
}
}
for (uint_t i = 0; i < nv; i++) {
if (numat[i] > 0) {
corr[i] /= numat[i];
}
}
if (nulldists) {
for (int i = 0; i < nv; i++) {
free(dists[i]);
}
free(dists);
}
return corr;
}
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