Flute acoustics: measurement, modelling and design - School of ...

APPENDIX B. PROGRAM LISTINGS 300
/* if inserted at beginning, update head */
if(index == 0) {
cur = v->head;
v->head = (Node)malloc(sizeof(*(v->head)));
v->head->object = object;
v->head->next = cur;
}
else {
/* if inserted at end, update tail */
if(index == v->num) {
cur = v->tail;
v->tail = (Node)malloc(sizeof(*(v->tail)));
v->tail->object = object;
v->tail->next = NULL;
cur->next = v->tail;
}
/* otherwise, find position in Vector and update appropriately
*/
else {
cur = v->head->next;
prev = v->head;
for(i = 1; i < index; i++) {
cur = cur->next;
prev = prev->next;
}
prev->next = (Node)malloc(sizeof(*(prev->next)));
prev->next->object = object;
prev->next->next = cur;
}
}
}
/* increment size */
v->num++;
return;
}
void setAt(Vector v, void* object, int index) {
int i;
Node cur;
cur = v->head;
/* find indexed element */
for(i = 0; i < index; i++) {
cur = cur->next;
}
/* update indexed element with given object */
cur->object = object;
return;
}
void popFront(Vector v) {
Node second_element;
/* do nothing if empty vector */
if(sizeVector(v) == 0)
return;
/* if only 1 element, free head and reinitialise Vector */
if(sizeVector(v) == 1) {
free(v->head);
v->head = NULL;