Re: Petit problème en C (free)

voila le code un peu mieux formaté...

typedef struct _node {
 int value;
 struct _node *next;
 struct _node *previous;
} node;
typedef node* list;
typedef struct {
 int nb_rows;
 int nb_columns;
 list *matrix;
 /* array of linked lists
 each list corresponds to a column,
 each value of a node in this list
 gives the positions of a 1 in this column */
} ldpc_matrix;
void add_rows(ldpc_matrix *m, int i1, int i2){
 int j;
 list l, l1;
 int value_i2;
 for(j=0; j<m->nb_columns; j++){
 l = m->matrix[j];
 l1 = NULL;
 value_i2 = 0;
 while(l!=NULL){
 if(l->value==i2)
	value_i2 = 1;
 if(l->value==i1)
	l1 = l;
 l = l->next;
 }
 if((l1!=NULL) && (value_i2==1)){
 if(l1->previous){
	l1->previous->next = l1->next;
	if(l1->next)
	 l1->next->previous = l1->previous;
 }
 else{
	m->matrix[j] = l1->next;
 }
 free(l1);
 } else {
 if((l1==NULL) && (value_i2==1)){
	l1 = m->matrix[j];
	m->matrix[j] = (node*) malloc(sizeof(node));
	m->matrix[j]->value = i1;
	m->matrix[j]->next = l1;
	m->matrix[j]->previous = NULL;
 }
 }
 }
}