#include "array.h"
-int create_tab(int tab[], unsigned tab_size) {
- tab = malloc(sizeof(unsigned) * tab_size);
+int* create_tab(int tab[], unsigned tab_size) {
+ tab = malloc(sizeof(int) * tab_size);
if (tab == NULL) {
- return -1;
+ return NULL;
} else {
- return 0;
+ /* initialize to zero the integer array */
+ for (unsigned i = 0; i < tab_size; i++) {
+ tab[i] = 0;
+ }
+ return tab;
}
}
free(tab);
}
-/* we suppose both tab are already created */
-static void copy_tab(int src_tab[], int dest_tab[], unsigned min_tab_size, unsigned index_offset) {
- /* FIXME: I think it's worth doing some sanity check on the array size */
- for (unsigned i = 0; i < min_tab_size; i++) {
+/* we suppose both tabs are already created */
+static void copy_tab(int src_tab[], int dest_tab[], unsigned src_tab_size, unsigned index_offset) {
+ /* FIXME: I think it's worth doing some sanity checks on the array size:
+ * dest_tab_size >= src_tab_size */
+ for (unsigned i = 0; i < src_tab_size; i++) {
dest_tab[i + index_offset] = src_tab[i];
}
}
-int concat_tab(int tab1[], unsigned tab_size1, int tab2[], unsigned tab_size2, int tab_dest[]) {
- int rt = create_tab(tab_dest, tab_size1 + tab_size2);
+int* concat_tab(int tab1[], unsigned tab_size1, int tab2[], unsigned tab_size2, int tab_dest[]) {
+ int* rt = create_tab(tab_dest, tab_size1 + tab_size2);
copy_tab(tab1, tab_dest, tab_size1, 0);
copy_tab(tab2, tab_dest, tab_size2, tab_size1);
return rt;
}
-int resize_tab(int tab[], unsigned tab_size) {
- tab = realloc(tab, sizeof(int) * tab_size);
+int* resize_tab(int tab[], unsigned new_tab_size) {
+ tab = realloc(tab, sizeof(int) * new_tab_size);
if (tab == NULL) {
- return -1;
+ return NULL;
} else {
- return 0;
+ return tab;
}
}