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-rw-r--r--src/analyze_correlations.cpp45
1 files changed, 28 insertions, 17 deletions
diff --git a/src/analyze_correlations.cpp b/src/analyze_correlations.cpp
index 0ebd5dd..aba7641 100644
--- a/src/analyze_correlations.cpp
+++ b/src/analyze_correlations.cpp
@@ -6,7 +6,7 @@
#include <getopt.h>
#include <fftw3.h>
-double *compute_OO(count_t length, double *data, count_t N) {
+double *compute_OO(count_t length, double *data, int N) {
double *OO = (double *)calloc(2 + length, sizeof(double));
if (OO == NULL) {
@@ -21,36 +21,42 @@ double *compute_OO(count_t length, double *data, count_t N) {
OO[1] /= N;
- fftw_plan plan = fftw_plan_r2r_1d(N, data, data, FFTW_R2HC, FFTW_ESTIMATE);
+ double *tmp1 = (double *)malloc(N * sizeof(double));
+
+ fftw_plan plan = fftw_plan_r2r_1d(N, tmp1, tmp1, FFTW_R2HC, 0);
+ for (int i = 0; i < N; i++) {
+ tmp1[i] = data[i];
+ }
fftw_execute(plan);
+ fftw_destroy_plan(plan);
double *tmp = (double *)malloc(N * sizeof(double));
+ fftw_plan plan2 = fftw_plan_r2r_1d(N, tmp, tmp, FFTW_HC2R, 0);
+
if (tmp == NULL) {
free(OO);
fftw_destroy_plan(plan);
return NULL;
}
- tmp[0] = data[0] * data[0];
- tmp[N / 2] = data[N/2] * data[N/2];
+ tmp[0] = tmp1[0] * tmp1[0];
+ tmp[N / 2] = tmp1[N/2] * tmp1[N/2];
for (count_t i = 1; i < N / 2 - 1; i++) {
- tmp[i] = data[i] * data[i] + data[N - i] * data[N - i];
+ tmp[i] = tmp1[i] * tmp1[i] + tmp1[N - i] * tmp1[N - i];
tmp[N - i] = 0;
}
- fftw_destroy_plan(plan);
-
- plan = fftw_plan_r2r_1d(N, tmp, tmp, FFTW_HC2R, FFTW_ESTIMATE);
- fftw_execute(plan);
+ fftw_execute(plan2);
for (count_t j = 0; j < length; j++) {
OO[2 + j] = tmp[j] / pow(N, 2);
}
+ free(tmp1);
free(tmp);
- fftw_destroy_plan(plan);
+ fftw_destroy_plan(plan2);
return OO;
}
@@ -286,32 +292,37 @@ int main (int argc, char *argv[]) {
} else {
double *data_S = (double *)malloc(N * sizeof(double));
- double *data_E = (double *)malloc(N * sizeof(double));
uint32_t tmp;
- float tmp2;
for (count_t i = 0; i < N; i++) {
fread(&tmp, 1, sizeof(uint32_t), file_S);
data_S[i] = (double)tmp;
- fread(&tmp2, 1, sizeof(float), file_E);
- data_E[i] = (double)tmp2;
}
double *OO_S = compute_OO(length, data_S + drop, N - drop);
- double *OO_E = compute_OO(length, data_E + drop, N - drop);
sprintf(filename_S, "wolff_%lu_S_OO.dat", id);
- sprintf(filename_E, "wolff_%lu_E_OO.dat", id);
FILE *file_S_new = fopen(filename_S, "wb");
fwrite(OO_S, sizeof(double), 2 + length, file_S_new);
fclose(file_S_new);
+ free(data_S);
+
+ double *data_E = (double *)malloc(N * sizeof(double));
+ float tmp2;
+
+ for (count_t i = 0; i < N; i++) {
+ fread(&tmp2, 1, sizeof(float), file_E);
+ data_E[i] = (double)tmp2;
+ }
+
+ double *OO_E = compute_OO(length, data_E + drop, N - drop);
+ sprintf(filename_E, "wolff_%lu_E_OO.dat", id);
FILE *file_E_new = fopen(filename_E, "wb");
fwrite(OO_E, sizeof(double), 2 + length, file_E_new);
fclose(file_E_new);
- free(data_S);
free(data_E);
printf("\033[F%lu: Correlation functions for %g steps written.\n", id, OO_S[0]);
free(OO_S);