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#include <stdlib.h>
#include "../core/char.h"
#include "../core/index.h"
#include "../sequence/sequence.h"
#include "../error/error.h"
#include "knowledge.h"
/* See "knowledge.h". */
int JH_knowledge_find_word_id
(
const struct JH_knowledge k [const restrict static 1],
const JH_char word [const restrict static 1],
const size_t word_length,
JH_index result [const restrict static 1]
)
{
/* This is a binary search */
int cmp;
JH_index i, current_min, current_max;
/* Handles the case where the list is empty ********************************/
current_max = k->words_length;
if (current_max == 0)
{
*result = 0;
return -1;
}
/***************************************************************************/
current_min = 0;
current_max -= 1;
while (current_min <= current_max)
{
i = (current_min + ((current_max - current_min) / 2));
cmp =
JH_word_cmp
(
word,
word_length,
k->words[k->words_sorted[i]].word,
k->words[k->words_sorted[i]].word_length
);
if (cmp > 0)
{
current_min = (i + 1);
if (current_min > current_max)
{
*result = current_min;
return -1;
}
}
else if (cmp < 0)
{
if ((current_min >= current_max) || (i == 0))
{
*result = current_min;
return -1;
}
current_max = (i - 1);
}
else
{
*result = k->words_sorted[i];
return 0;
}
}
*result = current_min;
return -1;
}
int JH_knowledge_find_markov_sequence
(
const JH_index sequence_id,
const struct JH_knowledge_sequence_collection sc [const restrict static 1],
JH_index result [const restrict static 1]
)
{
/* This is a binary search */
int cmp;
JH_index i, current_min, current_max;
if (sc->sequences_ref_length == 0)
{
*result = 0;
return -1;
}
current_min = 0;
current_max = (sc->sequences_ref_length - 1);
while (current_min <= current_max)
{
i = (current_min + ((current_max - current_min) / 2));
cmp =
JH_index_cmp
(
sequence_id,
sc->sequences_ref[sc->sequences_ref_sorted[i]].id
);
if (cmp > 0)
{
current_min = (i + 1);
if (current_min > current_max)
{
*result = current_min;
return -1;
}
}
else if (cmp < 0)
{
if ((current_min >= current_max) || (i == 0))
{
*result = current_min;
return -1;
}
current_max = (i - 1);
}
else
{
*result = sc->sequences_ref_sorted[i];
return 0;
}
}
*result = current_min;
return -1;
}
int JH_knowledge_find_sequence_target
(
const JH_index target_id,
const struct JH_knowledge_sequence_data sd [const restrict static 1],
JH_index result [const restrict static 1]
)
{
/* This is a binary search */
int cmp;
JH_index i, current_min, current_max;
if (sd->targets_length == 0)
{
*result = 0;
return -1;
}
current_min = 0;
current_max = (sd->targets_length - 1);
while (current_min <= current_max)
{
i = (current_min + ((current_max - current_min) / 2));
cmp = JH_index_cmp(target_id, sd->targets[i].id);
if (cmp > 0)
{
current_min = (i + 1);
if (current_min > current_max)
{
*result = current_min;
return -1;
}
}
else if (cmp < 0)
{
if ((current_min >= current_max) || (i == 0))
{
*result = current_min;
return -1;
}
current_max = (i - 1);
}
else
{
*result = i;
return 0;
}
}
*result = current_min;
return -1;
}
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