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#include <time.h>
#include <getopt.h>
#include <cluster.h>
template <q_t q, class T>
double H_vector(vector_t <q, T> v1, T *H) {
vector_t <q, T> H_vec;
H_vec.x = H;
return (double)(dot <q, T> (v1, H_vec));
}
template <class R_t, class X_t>
void wolff(count_t N, D_t D, L_t L, double T, std::function <double(X_t, X_t)> J, std::function <double(X_t)> H, unsigned long timestamp, bool silent) {
state_t <R_t, X_t> s(D, L, T, J, H);
// initialize random number generator
gsl_rng *r = gsl_rng_alloc(gsl_rng_mt19937);
gsl_rng_set(r, rand_seed());
char *filename_M = (char *)malloc(255 * sizeof(char));
char *filename_E = (char *)malloc(255 * sizeof(char));
char *filename_S = (char *)malloc(255 * sizeof(char));
sprintf(filename_M, "wolff_%lu_M.dat", timestamp);
sprintf(filename_E, "wolff_%lu_E.dat", timestamp);
sprintf(filename_S, "wolff_%lu_S.dat", timestamp);
FILE *outfile_M = fopen(filename_M, "wb");
FILE *outfile_E = fopen(filename_E, "wb");
FILE *outfile_S = fopen(filename_S, "wb");
free(filename_M);
free(filename_E);
free(filename_S);
v_t cluster_size = 0;
if (!silent) printf("\n");
for (count_t steps = 0; steps < N; steps++) {
if (!silent) printf("\033[F\033[JWOLFF: sweep %" PRIu64 " / %" PRIu64 ": E = %.2f, M_0 = %.2f, S = %" PRIv "\n", steps, N, s.E, s.M.x[0], cluster_size);
v_t v0 = gsl_rng_uniform_int(r, s.nv);
R_t step;
generate_rotation(r, &step);
cluster_size = flip_cluster <R_t, X_t> (&s, v0, step, r);
free_spin(step);
fwrite(&(s.E), sizeof(double), 1, outfile_E);
fwrite(s.M.x, sizeof(double), 2, outfile_M);
fwrite(&cluster_size, sizeof(uint32_t), 1, outfile_S);
}
if (!silent) {
printf("\033[F\033[J");
}
printf("WOLFF: sweep %" PRIu64 " / %" PRIu64 ": E = %.2f, M_0 = %.2f, S = %" PRIv "\n", N, N, s.E, s.M.x[0], cluster_size);
fclose(outfile_M);
fclose(outfile_E);
fclose(outfile_S);
gsl_rng_free(r);
}
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