You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
37 lines
622 B
C
37 lines
622 B
C
#include <stdio.h>
|
|
#include <assert.h>
|
|
#include <stdlib.h>
|
|
|
|
typedef int T;
|
|
typedef struct queue_s {
|
|
T *body, *begin, *end, *body_end;
|
|
} queue;
|
|
|
|
queue* queue_new(size_t size) {
|
|
queue *t = (queue *)malloc(sizeof(queue));
|
|
assert(t != NULL);
|
|
t->body = (int *)malloc(sizeof(T)*size);
|
|
t->begin = t->end = t->body;
|
|
t->body_end = t->body + size;
|
|
return t;
|
|
}
|
|
|
|
void queue_delete(queue *t) {
|
|
free(t->body);
|
|
free(t);
|
|
}
|
|
|
|
void queue_enqueue(queue *t, T el) {
|
|
assert(t->end < t->body_end);
|
|
*t->end++ = el;
|
|
}
|
|
|
|
int queue_empty(queue const *t) {
|
|
return t->begin == t->end;
|
|
}
|
|
|
|
T queue_dequeue(queue *t) {
|
|
return *t->begin++;
|
|
}
|
|
|