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#include <stdlib.h>
#include <string.h>
#include "../io/error.h"
#include "../tool/sorted_list.h"
#include "knowledge.h"
static int cmp_seq_link
(
const void * const a,
const void * const b,
const void * const other
)
{
ZoO_index j;
ZoO_index * sequence;
struct ZoO_knowledge_link * link;
sequence = (ZoO_index *) a;
link = (struct ZoO_knowledge_link *) b;
for (j = 0; j < ZoO_SEQUENCE_SIZE; ++j)
{
if (sequence[j] < link->sequence[j])
{
return -1;
}
else if (sequence[j] > link->sequence[j])
{
return 1;
}
}
return 0;
}
int ZoO_knowledge_find_link
(
ZoO_index const links_count,
struct ZoO_knowledge_link links [const],
ZoO_index const sequence [const restrict static ZoO_SEQUENCE_SIZE],
ZoO_index result [const restrict static 1]
)
{
return
ZoO_sorted_list_index_of
(
links_count,
(void const *) links,
(void const *) sequence,
sizeof(struct ZoO_knowledge_link),
cmp_seq_link,
(void const *) NULL,
result
);
}
int ZoO_knowledge_get_link
(
ZoO_index links_count [const],
struct ZoO_knowledge_link * links [const],
ZoO_index const sequence [const restrict static ZoO_SEQUENCE_SIZE],
ZoO_index result [const restrict static 1]
)
{
struct ZoO_knowledge_link * new_p;
if
(
ZoO_sorted_list_index_of
(
*links_count,
(void const *) *links,
(void const *) sequence,
sizeof(struct ZoO_knowledge_link),
cmp_seq_link,
(void const *) NULL,
result
) == 0
)
{
return 0;
}
*links_count += 1;
new_p =
(struct ZoO_knowledge_link *) realloc
(
(void *) *links,
(sizeof(struct ZoO_knowledge_link) * (*links_count))
);
if (new_p == (struct ZoO_knowledge_link *) NULL)
{
*links_count -= 1;
return -1;
}
if (*result < (*links_count - 1))
{
memmove(
(void *) (new_p + *result + 1),
(const void *) (new_p + *result),
(sizeof(struct ZoO_knowledge_link) * (*links_count - 1 - *result))
);
}
*links = new_p;
new_p += *result;
memcpy
(
(void *) new_p->sequence,
(void const *) sequence,
/* can be zero */
(sizeof(ZoO_index) * ZoO_SEQUENCE_SIZE)
);
new_p->occurrences = 0;
new_p->targets_count = 0;
new_p->targets_occurrences = (ZoO_index *) NULL;
new_p->targets = (ZoO_index *) NULL;
return 0;
}
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