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#include <getopt.h>
#include <wolff.h>
int main(int argc, char *argv[]) {
count_t N = (count_t)1e7;
D_t D = 2;
L_t L = 128;
double T = 2.26918531421;
double H = 0.0;
bool silent = false;
int opt;
while ((opt = getopt(argc, argv, "N:q:D:L:T:J:H:s")) != -1) {
switch (opt) {
case 'N': // number of steps
N = (count_t)atof(optarg);
break;
case 'D': // dimension
D = atoi(optarg);
break;
case 'L': // linear size
L = atoi(optarg);
break;
case 'T': // temperature
T = atof(optarg);
break;
case 'H': // external field. nth call couples to state n
H = atof(optarg);
break;
case 's': // don't print anything during simulation. speeds up slightly
silent = true;
break;
default:
exit(EXIT_FAILURE);
}
}
// initialize random number generator
gsl_rng *r = gsl_rng_alloc(gsl_rng_mt19937);
gsl_rng_set(r, rand_seed());
state_t <z2_t, ising_t> s(D, L, T, ising_dot, std::bind(scalar_field, std::placeholders::_1, H));
std::function <z2_t(gsl_rng *, const state_t <z2_t, ising_t> *)> gen_R = generate_ising_rotation;
unsigned int n_measurements = 1;
double average_M = 0;
std::function <void(const state_t <z2_t, ising_t> *)> *measurements = (std::function <void(const state_t <z2_t, ising_t> *)> *)calloc(1, sizeof(std::function <void(const state_t <z2_t, ising_t> *)>));
measurements[0] = [&] (const state_t <z2_t, ising_t> *s) {
average_M += (double)s->M / (double)N / (double)s->nv;
};
wolff(N, &s, gen_R, n_measurements, measurements, r, silent);
printf("%" PRIcount " Ising runs completed. D = %" PRID ", L = %" PRIL ", T = %g, H = %g, <M> = %g\n", N, D, L, T, H, average_M);
free(measurements);
gsl_rng_free(r);
return 0;
}
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