void
Trace::append(const AIRCRAFT_STATE& state)
{
if (empty()) {
task_projection.reset(state.get_location());
task_projection.update_fast();
m_last_point.time = null_time;
} else if (trace_tree.size() > 0 && state.Time < fixed(m_last_point.time)) {
clear();
return;
}
TracePoint tp(state);
if ((tp.time - m_last_point.time) < 2)
return;
tp.project(task_projection);
tp.last_time = m_last_point.time;
TraceTree::const_iterator it_this = trace_tree.insert(tp);
m_last_point = tp;
// update deltas. Last point is always high delta
delta_map[tp.time].distance = null_delta;
delta_map[tp.time].time = null_time;
TraceTree::const_iterator it_prev = find_prev(tp);
if (it_prev != end())
update_delta(find_prev(*it_prev), it_prev, it_this);
}
void
Trace::erase(TraceTree::const_iterator& rit)
{
/// @todo merge data for erased point?
if (rit == trace_tree.end())
return;
TraceTree::const_iterator it_prev = find_prev(*rit);
TraceTree::const_iterator it_next = find_next(*rit);
// don't erase if last or first point in tree
if ((it_prev == trace_tree.end()) || (it_next == trace_tree.end()))
return;
// create new point representing the next point since this is merged with it
TracePoint tp_next = *it_next;
tp_next.last_time = it_prev->time;
// remove erased point from the delta map
delta_map.erase(rit->time);
// remove current (deletion), and next (to be replaced)
trace_tree.erase(rit);
trace_tree.erase(it_next);
// insert point replacement
it_next = trace_tree.insert(tp_next);
// recompute data for previous and replacement point
update_delta(find_prev(*it_prev), it_prev, it_next);
update_delta(it_prev, it_next, find_next(*it_next));
}
void
Trace::erase(TraceTree::const_iterator& rit)
{
/// @todo merge data for erased point?
if (rit == trace_tree.end())
return;
TraceTree::const_iterator it_prev = find_prev(*rit);
TraceTree::const_iterator it_next = find_next(*rit);
if ((it_prev == trace_tree.end()) || (it_next == trace_tree.end()))
return;
TracePoint tp_next = *it_next;
tp_next.last_time = it_prev->time;
distance_delta_map.erase(rit->time);
time_delta_map.erase(rit->time);
trace_tree.erase(rit);
trace_tree.erase(it_next);
it_next = trace_tree.insert(tp_next);
update_delta(find_prev(*it_prev), it_prev, it_next);
update_delta(it_prev, it_next, find_next(*it_next));
}
int
flist_prev_mismatch(const FileView *view)
{
return (view->custom.type == CV_DIFF)
? find_prev(view, &is_mismatched_entry)
: view->list_pos;
}
GSList*
g_slist_remove_all (GSList *list, gconstpointer data)
{
GSList *next = list;
GSList *prev = NULL;
GSList *current;
while (next) {
GSList *tmp_prev = find_prev (next, data);
if (tmp_prev)
prev = tmp_prev;
current = prev ? prev->next : list;
if (!current)
break;
next = current->next;
if (prev)
prev->next = next;
else
list = next;
g_slist_free_1 (current);
}
return list;
}
/*
* del_uglymem
*
* free an uglymem-entry
*/
static void del_uglymem(UGLYMEM * umem)
{
UGLYMEM *prev = find_prev(umem);
/* unlink from list */
if (prev) {
prev->next = umem->next;
} else {
first = umem->next;
}
/* check for damaged wall */
if (!ugly_walldamaged(umem)) {
/* wall ok:
*
* fill memory with $DEADBEEF,
* free memory */
fill_mem4(umem->lower, umem->size + 2 * UMEM_WALLSIZE, deadbeef);
free(umem->lower);
}
/* free memory structure */
umem->lower = NULL;
umem->upper = NULL;
umem->size = 0;
umem->file = NULL;
umem->line = 0;
free(umem);
}
void insert(int v)
{
int now = find_prev(v + 1);
if(value[now] == v)
{
++count[now];
splay(now);
} else {
int prev = find_prev(v);
splay(prev);
son[++total][1] = son[prev][1];
fa[son[prev][1]] = total;
son[prev][1] = total;
fa[total] = prev;
count[total] = 1;
value[total] = v;
splay(total);
}
}
void delete_elem(struct item **head, item *elem)
{
if (elem == *head)
delete_head(head);
else
{
struct item *p = find_prev(*head, elem);
p->next = elem->next;
free(elem);
}
}
//Queue function to add nodes to a ll such that the head is retained
void queue (int data) {
if (!head) {
head = (struct node*) malloc(sizeof(struct node));
head->data = data;
head->next = NULL;
return;
}
struct node* tmp = (struct node*) malloc(sizeof(struct node));
struct node* prev = find_prev(head);
prev->next = tmp;
tmp->data = data;
tmp->next = NULL;
}
// Same preconditions as 'segregate'
// Post: !empty()
void add_ordered_block(void * const block,
const size_type nsz, const size_type npartition_sz)
{
// This (slower) version of add_block segregates the
// block and merges its free list into our free list
// in the proper order
// Find where "block" would go in the free list
void * const loc = find_prev(block);
// Place either at beginning or in middle/end
if (loc == 0)
add_block(block, nsz, npartition_sz);
else
nextof(loc) = segregate(block, nsz, npartition_sz, nextof(loc));
}
GSList*
g_slist_remove (GSList *list, gconstpointer data)
{
GSList *prev = find_prev (list, data);
GSList *current = prev ? prev->next : list;
if (current) {
if (prev)
prev->next = current->next;
else
list = current->next;
g_slist_free_1 (current);
}
return list;
}
// pre: chunk was previously returned from a malloc() referring to the
// same free list
// post: !empty()
void ordered_free(void * const chunk)
{
// This (slower) implementation of 'free' places the memory
// back in the list in its proper order.
// Find where "chunk" goes in the free list
void * const loc = find_prev(chunk);
// Place either at beginning or in middle/end
if (loc == 0)
free(chunk);
else
{
nextof(chunk) = nextof(loc);
nextof(loc) = chunk;
}
}
/**
* mono_mlist_remove_item:
* @list: the managed list
* @data: the object to remove from the list
*
* Remove the list node @item from the managed list @list.
* Since managed lists are singly-linked, this operation can take O(n) time.
*/
MonoMList*
mono_mlist_remove_item (MonoMList* list, MonoMList *item)
{
MonoMList* prev;
if (list == item) {
list = item->next;
item->next = NULL;
return list;
}
prev = find_prev (list, item);
if (prev) {
MONO_OBJECT_SETREF (prev, next, item->next);
item->next = NULL;
return list;
} else {
/* not found */
return list;
}
}
void format(struct item *head)
{
struct item *elem1 = head;
struct item *elem2 = head->next;
while (elem1 != NULL && elem1->next != NULL)
{
elem2 = elem1->next;
while (elem2 != NULL)
{
if (elem1->power == elem2->power)
{
elem1->num = elem1->num + elem2->num;
struct item *prev = find_prev(head, elem2);
delete_elem(&head, elem2);
elem2 = prev->next;
}
else
elem2 = elem2->next;
}
elem1 = elem1->next;
}
}
void remove(int v)
{
int prev = find_prev(v + 1);
splay(prev);
if(count[prev] > 1)
{
--count[prev];
} else {
root = son[prev][0];
fa[root] = 0;
int u = root, p = 0;
while(u)
{
p = u;
u = son[u][1];
}
son[p][1] = son[prev][1];
fa[son[prev][1]] = p;
splay(p);
}
}
void solve()
{
value[++total] = -99999999;
count[total] = 1;
root = total;
int N;
std::scanf("%d", &N);
for(int i = 0; i != N; ++i)
{
int opt, x;
std::scanf("%d %d", &opt, &x);
switch(opt)
{
case 1:
insert(x);
break;
case 2:
remove(x);
break;
case 3:
std::printf("%d\n", find_rank(x) - 1);
break;
case 4:
std::printf("%d\n", find_kth(x + 1));
break;
case 5:
opt = find_prev(x);
splay(opt);
std::printf("%d\n", value[opt]);
break;
case 6:
opt = find_next(x);
splay(opt);
std::printf("%d\n", value[opt]);
break;
}
}
}
int
flist_prev_dir(const FileView *view)
{
return find_prev(view, &fentry_is_dir);
}
/*
测试程序：
*/
int main()
{
int i;
init();
#if 1 // push_front test:
puts("push_front test:");
for(i=0; i<MAXN+2; i++) {
push_front(2*i+1);
show();
}
puts("pop_front test:");
for(i=0; i<MAXN+2; i++) {
pop_front();
show();
}
#endif
#if 1 // push_back test:
puts("push_back test:");
for(i=0; i<MAXN+2; i++) {
push_back((i+1)*10);
show();
}
puts("pop_back test:");
for(i=0; i<MAXN+1; i++)
{
pop_back();
show();
}
#endif
#if 1 // insert test:
puts("insert test:");
for(i=0; i<MAXN+2; i++)
{
insert(idata, (i+1)*10);
show();
}
puts("clear...\n");
clear();
#endif
#if 1 // insert_after test:
puts("insert_after test:");
push_back(-99);
for(i=0; i<MAXN+1; i++) {
insert_after(idata, i+1);
show();
}
puts("clear...\n");
clear();
#endif
#if 1 // find test:
puts("find test:");
for(i=0; i<MAXN/2; i++) {
push_front(MAXN-i);
push_back(MAXN/2-i);
//show();
}
show();
info();
for(i=0; i<MAXN; i++) {
int val = rand()%(2*MAXN);
pointer p = find(val);
if( p != NPTR )
printf("%3d %3d found at %d\n", val, dataof(p), p);
else
printf("%3d not found\n", val);
}
#endif
#if 1
puts("\nfind_prev test:");
for(i=0; i<MAXN; i++) {
int val = rand()%(2*MAXN);
pointer p = find_prev(val);
if( p != NPTR )
printf("%3d %3d found at %d's next.\n", val, dataof(nextof(p)), p);
else
printf("%3d not found\n", val);
}
#endif
#if 1 // find_prev and insert_after test:
clear();
puts("\nfind_prev and insert_after test:");
for(i=0; i<MAXN/2; i++) {
push_front(MAXN/2-i);
}
show();
for(i=0; i<MAXN/2; i++) {
int val = rand()%(2*MAXN), n=-(i+1);
pointer p = find_prev(val);
if( p != NPTR ) {
printf("insert %d to front of %d:", n, val);
insert_after(p, n);
show();
}
}
#endif
#if 1 // find and insert test:
clear();
puts("\nfind and insert test:");
for(i=0; i<MAXN/2; i++) {
push_front(MAXN/2-i);
}
show();
for(i=0; i<MAXN/2; i++) {
int val = rand()%MAXN, n=-(i+1);
pointer p = find(val);
if( p != NPTR ) {
printf("insert %d to after of %d:", n, val);
insert_after(p, n);
show();
}
}
#endif
puts("end of main().");
return 0;
}
void list_unlink(int* first, int* next,
int head, int node)
{
list_unlink_after(first, next, head, node,
find_prev(first, next, head, node));
}
int
flist_prev_selected(const FileView *view)
{
return find_prev(view, &is_entry_selected);
}
size_t text_find_prev(Text *txt, size_t pos, const char *s) {
return find_prev(txt, pos, s, false);
}
size_t text_line_find_prev(Text *txt, size_t pos, const char *s) {
return find_prev(txt, pos, s, true);
}