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-rwxr-xr-xdynamics/randomwalks/utils.c494
1 files changed, 494 insertions, 0 deletions
diff --git a/dynamics/randomwalks/utils.c b/dynamics/randomwalks/utils.c
new file mode 100755
index 0000000..952fcd7
--- /dev/null
+++ b/dynamics/randomwalks/utils.c
@@ -0,0 +1,494 @@
+#include "iltree.h"
+#include <stdlib.h>
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "utils.h"
+
+void* alloc_double(){
+ return malloc(sizeof(long double));
+}
+
+void dealloc_double(void *elem){
+ free(elem);
+}
+
+void copy_double(void *elem1, void *elem2){
+ *((long double*)elem2) = *((long double*)elem1);
+}
+
+int compare_double(void *elem1, void *elem2){
+ return *((long double*)elem1) - *((long double*)elem2);
+}
+
+void print_double(void *elem, void *fileout){
+
+ long double k, i, j;
+ long double x;
+
+ k = *((long double*)elem);
+
+ x = (1 + sqrtl(1 + 8 * (k-1))) / 2;
+ i = floorl(x) + 1;
+ j = k - ( (i-1)*1.0 * (i-2) ) /2;
+ //printf("x: %Lf\n i: %0.0Lf j: %0.0Lf\n", x, i, j);
+ fprintf((FILE*)fileout, "%0.0Lf %0.0Lf\n", i-1, j-1);
+}
+
+iltree_t init_tree(iltree_t t, void *fileout){
+
+ ilfunc_t funs= {
+ .alloc = alloc_double,
+ .dealloc = dealloc_double,
+ .copy = copy_double,
+ .compare = compare_double,
+ .print = print_double,
+ .fileout = fileout
+ };
+
+ t = iltree_create(t);
+ iltree_set_funs(t, &funs);
+ return t;
+}
+
+
+/* @@@@ CAMBIARE IL PRIMO PARAMETRO IN UN FILE* PER RENDERLA COERENTE
+ ALLE ALTRE FUNZIONI DI READ!!!!*/
+int read_deg_distr(FILE *filein, unsigned int **degs, unsigned int **Nk, double **p){
+
+ int n_degs = 0;
+ int size = 10;
+ char *line;
+ char buff[256];
+ int k_i, num_i;
+ double p_i;
+ char *ptr;
+
+ line = NULL;
+
+ *degs = realloc(*degs, size*sizeof(unsigned int));
+ *Nk = realloc(*Nk, size*sizeof(unsigned int));
+ *p = realloc(*p, size*sizeof(double));
+
+
+ while(fgets(buff, 256, filein)){
+ ptr = strtok(buff, " ");
+ if (ptr[0] == '#')
+ continue;
+ k_i = atoi(ptr);
+ ptr = strtok(NULL, " " );
+ num_i = atoi(ptr);
+ ptr = strtok(NULL, " \n");
+ p_i = atof(ptr);
+ if (n_degs == size){
+ size += 10;
+ *degs = realloc(*degs, size*sizeof(unsigned int));
+ *Nk = realloc(*Nk, size*sizeof(unsigned int));
+ *p = realloc(*p, size*sizeof(double));
+ }
+ (*degs)[n_degs] = k_i;
+ (*Nk)[n_degs] = num_i;
+ (*p)[n_degs] = p_i;
+ n_degs += 1;
+ }
+ *degs = realloc(*degs, n_degs*sizeof(unsigned int));
+ *Nk = realloc(*Nk, n_degs*sizeof(unsigned int));
+ *p = realloc(*p, n_degs*sizeof(double));
+ return n_degs;
+}
+
+
+int read_deg_seq(FILE *filein, unsigned int **nodes){
+
+ int size, N, k;
+ char buff[256];
+ char *ptr;
+
+ N = 0;
+ size = 10;
+
+ *nodes = (unsigned int*)malloc(size * sizeof(unsigned int));
+
+ while(fgets(buff, 256, filein)){
+ ptr = strtok(buff, " ");
+ if (ptr[0] == '#')
+ continue;
+ k = atoi(ptr);
+
+ if (N == size){
+ size += 10;
+ *nodes = realloc(*nodes, size*sizeof(unsigned int));
+ }
+ (*nodes)[N] = k;
+ N += 1;
+ }
+ *nodes = realloc(*nodes, N * sizeof(unsigned int));
+ return N;
+}
+
+int read_stubs(FILE *filein, unsigned int **S){
+
+ int size, K;
+ char buff[256];
+ char *ptr;
+
+ K=0;
+ size = 20;
+ *S = malloc(size * sizeof(unsigned int));
+
+ while(fgets(buff, 256, filein)){
+ if (K == size){
+ size += 20;
+ *S = realloc(*S, size*sizeof(unsigned int));
+ }
+ ptr = strtok(buff, " "); /* read the first node */
+ (*S)[K++] = atoi(ptr);
+ ptr = strtok(NULL, " "); /* read the second node */
+ (*S)[K++] = atoi(ptr);
+ }
+ *S = realloc(*S, K * sizeof(unsigned int));
+ return K;
+}
+
+/*
+ * Read a file in ij format
+ */
+int read_ij(FILE *filein, unsigned int **I, unsigned int **J){
+
+ unsigned int size, K;
+ char buff[256];
+ char *ptr;
+
+ size = 20;
+ K = 0;
+
+ *I = malloc(size * sizeof(unsigned int));
+ *J = malloc(size * sizeof(unsigned int));
+ while(fgets(buff, 256, filein)){
+ if (buff[0] == '#')
+ continue;
+ if (K == size){
+ size += 20;
+ *I = realloc(*I, size*sizeof(unsigned int));
+ *J = realloc(*J, size*sizeof(unsigned int));
+ }
+ ptr = strtok(buff, " "); /* read the first node */
+ (*I)[K] = atoi(ptr);
+ ptr = strtok(NULL, " "); /* read the second node */
+ (*J)[K] = atoi(ptr);
+ K += 1;
+ }
+
+ *I = realloc(*I, K * sizeof(unsigned int));
+ *J = realloc(*J, K * sizeof(unsigned int));
+ return K;
+}
+
+/*funzione pesata di moreno*/
+
+int read_ij_w(FILE *filein, unsigned int **I, unsigned int **J , double **W){
+
+ unsigned int size, K;
+ char buff[256];
+ char *ptr;
+
+ size = 20;
+ K = 0;
+
+ *I = malloc(size * sizeof(unsigned int));
+ *J = malloc(size * sizeof(unsigned int));
+ *W = malloc(size * sizeof(double));
+
+ while(fgets(buff, 256, filein)){
+ if (buff[0] == '#')
+ continue;
+ if (K == size){
+ size += 20;
+ *I = realloc(*I, size*sizeof(unsigned int));
+ *J = realloc(*J, size*sizeof(unsigned int));
+ *W = realloc(*W, size*sizeof(double));
+ if (*W==NULL) {
+ printf ("Errore");
+ exit(-1);
+ }
+ }
+ ptr = strtok(buff, " "); /* read the first node */
+ (*I)[K] = atoi(ptr);
+ ptr = strtok(NULL, " "); /* read the second node */
+ (*J)[K] = atoi(ptr);
+ ptr = strtok(NULL, " "); /* read the weight */
+ (*W)[K] = atof(ptr);
+ K += 1;
+ }
+
+ *I = realloc(*I, K * sizeof(unsigned int));
+ *J = realloc(*J, K * sizeof(unsigned int));
+ *W = realloc(*W, K * sizeof(double));
+ return K;
+}
+
+
+
+void read_slap(FILE *filein, unsigned int *K, unsigned int *N,
+ unsigned int **J_slap, unsigned int **r_slap){
+
+ unsigned int *I=NULL, *J=NULL;
+ unsigned int i, k;
+
+ k = read_ij(filein, &I, &J);
+ *K = 2 * k;
+ I = realloc(I, 2*k * sizeof(unsigned int));
+ J = realloc(J, 2*k * sizeof(unsigned int));
+ for (i=k; i<2*k; i ++){
+ I[i] = J[i-k];
+ J[i] = I[i-k];
+ }
+
+ *N = convert_ij2slap(I, J, 2*k, r_slap, J_slap);
+ free(I);
+ free(J);
+ return;
+}
+
+/*funzione pesata di moreno*/
+
+void read_slap_w(FILE *filein, unsigned int *K, unsigned int *N,
+ unsigned int **J_slap, unsigned int **r_slap, double **w_slap){
+
+ unsigned int *I=NULL, *J=NULL;
+ double *W=NULL;
+ unsigned int i, k;
+
+ k = read_ij_w(filein, &I, &J, &W);
+ *K = 2 * k;
+ I = realloc(I, 2*k * sizeof(unsigned int));
+ J = realloc(J, 2*k * sizeof(unsigned int));
+ W = realloc(W, 2*k * sizeof(double));
+
+ for (i=k; i<2*k; i ++){
+ I[i] = J[i-k];
+ J[i] = I[i-k];
+ W[i] = W[i-k];
+ }
+
+ *N = convert_ij2slap_w(I, J, W, 2*k, r_slap, J_slap, w_slap);
+ free(I);
+ free(J);
+ free(W);
+ return;
+}
+
+unsigned int find_max(unsigned int *v, unsigned int N){
+
+ unsigned int i, max;
+
+ max = v[0];
+ i = 0;
+ while(++i < N){
+ if (v[i] > max)
+ max = v[i];
+ }
+ return max;
+}
+
+
+int convert_ij2slap(unsigned int *I, unsigned int *J, unsigned int K,
+ unsigned int ** r_slap, unsigned int **J_slap){
+
+ unsigned int tmp, max;
+ unsigned int N;
+ unsigned int i, pos;
+ unsigned int *p;
+
+ max = find_max(I, K) + 1;
+ tmp = find_max(J, K) + 1;
+ if (tmp > max){
+ max = tmp ;
+ }
+
+ *r_slap = malloc( (max+1) * sizeof(unsigned int));
+ p = malloc(max * sizeof(unsigned int));
+
+ *J_slap = malloc(K * sizeof(unsigned int));
+
+ memset(*r_slap, 0, (max+1) * sizeof(unsigned int));
+ for(i=0; i<max + 1; i++)
+ (*r_slap)[i] = 0;
+ memset(p, 0, max * sizeof(unsigned int));
+ (*r_slap)[0] = 0;
+ //fprintf(stderr, "WARNING!!!! R_SLAP[0] NOW IS SET TO ZERO!!!!!\n");
+ for(i=0; i<K; i++){
+ (*r_slap)[ I[i] + 1] += 1;
+ }
+ for(i=1; i<=max; i++){
+ (*r_slap)[i] += (*r_slap)[i-1];
+ }
+ for(i=0; i<K; i++){
+ pos = (*r_slap) [ I[i] ] + p[ I[i] ];
+ (*J_slap)[pos] = J[i];
+ p[ I[i] ] += 1;
+ }
+ free(p);
+ return max;
+}
+
+/*funzione pesata di moreno*/
+int convert_ij2slap_w(unsigned int *I, unsigned int *J, double *W, unsigned int K,
+ unsigned int ** r_slap, unsigned int **J_slap,double **w_slap){
+
+ unsigned int tmp, max;
+ unsigned int N;
+ unsigned int i, pos;
+ unsigned int *p;
+
+ max = find_max(I, K) + 1;
+ tmp = find_max(J, K) + 1;
+ if (tmp > max){
+ max = tmp ;
+ }
+
+ *r_slap = malloc( (max+1) * sizeof(unsigned int));
+ p = malloc(max * sizeof(unsigned int));
+
+ *J_slap = malloc(K * sizeof(unsigned int));
+ *w_slap = malloc(K * sizeof(double));
+
+ memset(*r_slap, 0, (max+1) * sizeof(unsigned int));
+ for(i=0; i<max + 1; i++)
+ (*r_slap)[i] = 0;
+ memset(p, 0, max * sizeof(unsigned int));
+ (*r_slap)[0] = 0;
+ //fprintf(stderr, "WARNING!!!! R_SLAP[0] NOW IS SET TO ZERO!!!!!\n");
+ for(i=0; i<K; i++){
+ (*r_slap)[ I[i] + 1] += 1;
+ }
+ for(i=1; i<=max; i++){
+ (*r_slap)[i] += (*r_slap)[i-1];
+ }
+ for(i=0; i<K; i++){
+ pos = (*r_slap) [ I[i] ] + p[ I[i] ];
+ (*J_slap)[pos] = J[i];
+
+ (*w_slap)[pos] = W[i];
+
+ p[ I[i] ] += 1;
+ }
+ free(p);
+ return max;
+}
+
+
+
+int convert_ij2slap_N(unsigned int *I, unsigned int *J, unsigned int K,
+ unsigned int N, unsigned int ** r_slap,
+ unsigned int **J_slap){
+
+ unsigned int tmp, max;
+ unsigned int i, pos;
+ unsigned int *p;
+
+ max = N;
+
+ *r_slap = malloc( (max+1) * sizeof(unsigned int));
+ p = malloc(max * sizeof(unsigned int));
+
+ *J_slap = malloc(K * sizeof(unsigned int));
+
+ memset(*r_slap, 0, (max+1) * sizeof(unsigned int));
+ for(i=0; i<max + 1; i++)
+ (*r_slap)[i] = 0;
+ memset(p, 0, max * sizeof(unsigned int));
+ (*r_slap)[0] = 0;
+ //fprintf(stderr, "WARNING!!!! R_SLAP[0] NOW IS SET TO ZERO!!!!!\n");
+ for(i=0; i<K; i++){
+ (*r_slap)[ I[i] + 1] += 1;
+ }
+ for(i=1; i<=max; i++){
+ (*r_slap)[i] += (*r_slap)[i-1];
+ }
+ for(i=0; i<K; i++){
+ pos = (*r_slap) [ I[i] ] + p[ I[i] ];
+ (*J_slap)[pos] = J[i];
+ p[ I[i] ] += 1;
+ }
+ free(p);
+ return max;
+}
+
+
+
+/* RIVEDERE QUESTA FUNZIONE...... PASSARE UN FILE COME ARGOMENTO E
+ USARE fprintf */
+void dump_deg_distr(unsigned int *degs, double *p, int n){
+
+ int i;
+
+ for(i=0; i<n; i++){
+ printf("%d %2.6f\n", degs[i], p[i]);
+ }
+}
+
+
+
+/* RIVEDERE QUESTA FUNZIONE...... PASSARE UN FILE COME ARGOMENTO E
+ USARE fprintf */
+void dump_deg_seq(unsigned int *nodes, int N){
+
+ int i;
+ for(i=0; i<N; i++){
+ printf("%d: %d\n", i, nodes[i]);
+ }
+}
+
+void dump_edges(iltree_t t){
+
+ iltree_view_pre(t);
+}
+
+FILE* openfile_or_exit(char *filename, char *mode, int exitcode){
+
+ FILE *fileout;
+ char error_str[256];
+
+ fileout = fopen(filename, mode);
+ if (!fileout){
+ sprintf(error_str, "Error opening file %s", filename);
+ perror(error_str);
+ exit(exitcode);
+ }
+ return fileout;
+}
+
+inline int compare_int(const void *x1, const void *x2){
+ return *((unsigned int*)x1) - *((unsigned int*)x2);
+}
+
+void write_edges(FILE *fileout, unsigned int *J_slap,
+ unsigned int *r_slap, unsigned int N){
+
+ unsigned int i, j;
+
+ for(i=0; i<N; i++){
+ for (j=r_slap[i]; j<r_slap[i+1]; j++){
+ if (J_slap[j] > i){
+ fprintf(fileout, "%d %d\n", i, J_slap[j]);
+ }
+ }
+ }
+}
+
+
+/* Check if j is a neighbour of i */
+int is_neigh(unsigned int *J_slap, unsigned int *r_slap, unsigned int N,
+ unsigned int i, unsigned int j){
+
+ unsigned int l;
+ unsigned int count;
+ count = 0;
+ for(l=r_slap[i]; l<r_slap[i+1]; l++){
+ if (J_slap[l] == j)
+ count ++;
+ }
+ return count;
+}
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