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/* Barebones heap implementation supporting only insert and pop.
Copyright (C) 2010 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* Full implementation: GDSL (http://gna.org/projects/gdsl/) by Nicolas
Darnis <ndarnis@free.fr>. Adapted by Gene Auyeung. */
#include <stddef.h>
struct heap
{
void **array; /* array[0] is not used */
size_t capacity; /* Array size */
size_t count; /* Used as index to last element. Also is num of items. */
int (*compare)(const void *, const void *);
};
struct heap *heap_alloc (int (*)(const void *, const void *), size_t);
void heap_free (struct heap *);
int heap_insert (struct heap *heap, void *item);
void *heap_remove_top (struct heap *heap);
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