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#include "fracture.h"
double *get_voltage(const net_t *instance, cholmod_common *c) {
cholmod_dense *b = instance->boundary_cond;
cholmod_factor *factor = instance->factor;
cholmod_dense *x = CHOL_F(solve)(CHOLMOD_A, factor, b, c);
if (((double *)x->x)[0] != ((double *)x->x)[0]) {
for (uint_t i = 0; i < instance->graph->ne; i++) {
printf("%d ", instance->fuses[i]);
}
printf("\n");
printf("GET_VOLTAGE: value is NaN\n");
exit(EXIT_FAILURE);
}
double *field = (double *)x->x;
x->x = NULL;
CHOL_F(free_dense)(&x, c);
return field;
}
double *get_current(const net_t *instance, cholmod_common *c) {
unsigned int num_edges = instance->graph->ne;
unsigned int num_gverts = instance->graph->break_dim;
cholmod_sparse *voltcurmat = instance->graph->voltcurmat;
double *voltages = get_voltage(instance, c);
if (voltages == NULL) {
return NULL;
}
cholmod_dense *x = CHOL_F(allocate_dense)(
num_gverts, 1, num_gverts, CHOLMOD_REAL, c);
double *tmp_x = x->x;
x->x = voltages;
cholmod_dense *y =
CHOL_F(allocate_dense)(num_edges, 1, num_edges, CHOLMOD_REAL, c);
double alpha[2] = {1, 0};
double beta[2] = {0, 0};
CHOL_F(sdmult)(voltcurmat, 0, alpha, beta, x, y, c);
double *field = (double *)malloc(num_edges * sizeof(double));
for (int i = 0; i < num_edges; i++) {
if (instance->fuses[i])
field[i] = 0;
else
field[i] = ((double *)y->x)[i];
}
x->x = tmp_x;
free(voltages);
CHOL_F(free_dense)(&x, c);
CHOL_F(free_dense)(&y, c);
return field;
}
double *get_current_v(const net_t *instance, double *voltages, cholmod_common *c) {
unsigned int num_edges = instance->graph->ne;
unsigned int num_gverts = instance->graph->break_dim;
cholmod_sparse *voltcurmat = instance->graph->voltcurmat;
cholmod_dense *x = CHOL_F(allocate_dense)(
num_gverts, 1, num_gverts, CHOLMOD_REAL, c);
double *tmp_x = x->x;
x->x = voltages;
cholmod_dense *y =
CHOL_F(allocate_dense)(num_edges, 1, num_edges, CHOLMOD_REAL, c);
double alpha[2] = {1, 0};
double beta[2] = {0, 0};
CHOL_F(sdmult)(voltcurmat, 0, alpha, beta, x, y, c);
double *field = (double *)malloc(num_edges * sizeof(double));
for (int i = 0; i < num_edges; i++) {
if (instance->fuses[i])
field[i] = 0;
else
field[i] = ((double *)y->x)[i];
}
x->x = tmp_x;
CHOL_F(free_dense)(&x, c);
CHOL_F(free_dense)(&y, c);
return field;
}
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