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37 lines
622 B
C
37 lines
622 B
C
3 years ago
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#include <stdio.h>
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#include <assert.h>
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#include <stdlib.h>
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typedef int T;
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typedef struct queue_s {
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T *body, *begin, *end, *body_end;
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} queue;
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queue* queue_new(size_t size) {
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queue *t = (queue *)malloc(sizeof(queue));
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assert(t != NULL);
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t->body = (int *)malloc(sizeof(T)*size);
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t->begin = t->end = t->body;
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t->body_end = t->body + size;
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return t;
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}
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void queue_delete(queue *t) {
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free(t->body);
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free(t);
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}
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void queue_enqueue(queue *t, T el) {
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assert(t->end < t->body_end);
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*t->end++ = el;
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}
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int queue_empty(queue const *t) {
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return t->begin == t->end;
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}
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T queue_dequeue(queue *t) {
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return *t->begin++;
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}
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