diff options
Diffstat (limited to 'src/wolff_planar.cpp')
| -rw-r--r-- | src/wolff_planar.cpp | 183 | 
1 files changed, 0 insertions, 183 deletions
| diff --git a/src/wolff_planar.cpp b/src/wolff_planar.cpp deleted file mode 100644 index 4b9b5f0..0000000 --- a/src/wolff_planar.cpp +++ /dev/null @@ -1,183 +0,0 @@ - -#include <getopt.h> - -#include <wolff.h> -#include <correlation.h> - -typedef state_t <orthogonal_t <2, double>, vector_t <2, double>> planar_t; - -// angle from the x-axis of a two-vector -double theta(vector_t <2, double> v) { -  double x = v.x[0]; -  double y = v.x[1]; - -  double val = atan(y / x); - -  if (x < 0.0 && y > 0.0) { -    return M_PI + val; -  } else if ( x < 0.0 && y < 0.0 ) { -    return - M_PI + val; -  } else { -    return val; -  } -} - -double H_modulated(vector_t <2, double> v, int order, double mag) { -  return mag * cos(order * theta(v)); -} - -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_vec = (double *)calloc(MAX_Q, sizeof(double)); - -  bool silent = false; -  bool use_pert = false; - -  bool modulated_field = false; -  int order = 2; - -  int opt; -  q_t J_ind = 0; -  q_t H_ind = 0; -  double epsilon = 1; - -  while ((opt = getopt(argc, argv, "N:q:D:L:T:J:H:spe:mo:")) != -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_vec[H_ind] = atof(optarg); -      H_ind++; -      break; -    case 's': // don't print anything during simulation. speeds up slightly -      silent = true; -      break; -    case 'p': -      use_pert = true; -      break; -    case 'e': -      epsilon = atof(optarg); -      break; -    case 'm': -      modulated_field = true; -      break; -    case 'o': -      order = atoi(optarg); -      break; -    default: -      exit(EXIT_FAILURE); -    } -  } - -  unsigned long timestamp; - -  { -    struct timespec spec; -    clock_gettime(CLOCK_REALTIME, &spec); -    timestamp = spec.tv_sec*1000000000LL + spec.tv_nsec; -  } - -  const char *pert_type; - -  std::function <orthogonal_t <2, double>(gsl_rng *, const planar_t *)> gen_R; - -  if (use_pert) { -    gen_R = std::bind(generate_rotation_perturbation <2>, std::placeholders::_1, std::placeholders::_2, epsilon); -    pert_type = "PERTURB"; -  } else { -    gen_R = generate_rotation_uniform <2>; -    pert_type = "UNIFORM"; -  } - - -  FILE *outfile_info = fopen("wolff_metadata.txt", "a"); - -  fprintf(outfile_info, "<| \"ID\" -> %lu, \"MODEL\" -> \"PLANAR\", \"q\" -> 2, \"D\" -> %" PRID ", \"L\" -> %" PRIL ", \"NV\" -> %" PRIv ", \"NE\" -> %" PRIv ", \"T\" -> %.15f, \"H\" -> {", timestamp, D, L, L * L, D * L * L, T); - -  for (q_t i = 0; i < 2; i++) { -    fprintf(outfile_info, "%.15f", H_vec[i]); -    if (i < 2 - 1) { -      fprintf(outfile_info, ", "); -    } -  } - -  fprintf(outfile_info, "}, \"GENERATOR\" -> \"%s\", \"EPS\" -> %g |>\n", pert_type, epsilon); - -  fclose(outfile_info); - -  char *filename_M = (char *)malloc(255 * sizeof(char)); -  char *filename_E = (char *)malloc(255 * sizeof(char)); -  char *filename_S = (char *)malloc(255 * sizeof(char)); -  char *filename_X = (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); -  sprintf(filename_X, "wolff_%lu_X.dat", timestamp); - -  FILE *outfile_M = fopen(filename_M, "wb"); -  FILE *outfile_E = fopen(filename_E, "wb"); -  FILE *outfile_S = fopen(filename_S, "wb"); -  FILE *outfile_X = fopen(filename_X, "wb"); - -  free(filename_M); -  free(filename_E); -  free(filename_S); -  free(filename_X); - -  std::function <void(const planar_t *)> *measurements = (std::function <void(const planar_t *)> *)calloc(4, sizeof(std::function <void(const planar_t *)>)); - -  measurements[0] = (std::function <void(const planar_t *)>)[&](const planar_t *s) { -    float smaller_E = (float)s->E; -    fwrite(&smaller_E, sizeof(float), 1, outfile_E); -  }; -  measurements[1] = [&](const planar_t *s) { -    float smaller_X = (float)correlation_length(s); -    fwrite(&smaller_X, sizeof(float), 1, outfile_X); -  }; -  measurements[2] = [&](const planar_t *s) { -    write_magnetization(s->M, outfile_M); -  }; -  measurements[3] = [&](const planar_t *s) { -    fwrite(&(s->last_cluster_size), sizeof(uint32_t), 1, outfile_S); -  }; - -  std::function <double(vector_t <2, double>)> H; - -  if (modulated_field) { -    H = std::bind(H_modulated, std::placeholders::_1, order, H_vec[0]); -  } else { -    H = std::bind(H_vector <2, double>, std::placeholders::_1, H_vec); -  } - -  wolff <orthogonal_t <2, double>, vector_t <2, double>> (N, D, L, T, dot <2, double>, H, gen_R, 4, measurements, silent); - -  free(measurements); - -  fclose(outfile_M); -  fclose(outfile_E); -  fclose(outfile_S); -  fclose(outfile_X); - -  free(H_vec); - -  fftw_cleanup(); - -  return 0; -} - | 
