*b = t;
}
-/* Reverses the order of the CNT integers starting at VALUES. */
+/* Reverses the order of the N integers starting at VALUES. */
static void
-reverse (int *values, size_t cnt)
+reverse (int *values, size_t n)
{
size_t i = 0;
- size_t j = cnt;
+ size_t j = n;
while (j > i)
swap (&values[i++], &values[--j]);
}
-/* Arranges the CNT elements in VALUES into the lexicographically
+/* Arranges the N elements in VALUES into the lexicographically
next greater permutation. Returns true if successful.
If VALUES is already the lexicographically greatest
permutation of its elements (i.e. ordered from greatest to
permutation (i.e. ordered from smallest to largest) and
returns false. */
static bool
-next_permutation (int *values, size_t cnt)
+next_permutation (int *values, size_t n)
{
- if (cnt > 0)
+ if (n > 0)
{
- size_t i = cnt - 1;
+ size_t i = n - 1;
while (i != 0)
{
i--;
if (values[i] < values[i + 1])
{
size_t j;
- for (j = cnt - 1; values[i] >= values[j]; j--)
+ for (j = n - 1; values[i] >= values[j]; j--)
continue;
swap (values + i, values + j);
- reverse (values + (i + 1), cnt - (i + 1));
+ reverse (values + (i + 1), n - (i + 1));
return true;
}
}
- reverse (values, cnt);
+ reverse (values, n);
}
return false;
return value;
}
-/* Randomly shuffles the CNT elements in ARRAY, each of which is
+/* Randomly shuffles the N elements in ARRAY, each of which is
SIZE bytes in size. */
static void
-random_shuffle (void *array_, size_t cnt, size_t size)
+random_shuffle (void *array_, size_t n, size_t size)
{
char *array = array_;
char *tmp = xmalloc (size);
size_t i;
- for (i = 0; i < cnt; i++)
+ for (i = 0; i < n; i++)
{
- size_t j = rand () % (cnt - i) + i;
+ size_t j = rand () % (n - i) + i;
if (i != j)
{
memcpy (tmp, array + j * size, size);
return node;
}
-/* Checks that HMAPX contains the CNT ints in DATA, that its
+/* Checks that HMAPX contains the N ints in DATA, that its
structure is correct, and that certain operations on HMAPX
produce the expected results. */
static void
-check_hmapx (struct hmapx *hmapx, const int data[], size_t cnt,
+check_hmapx (struct hmapx *hmapx, const int data[], size_t n,
hash_function *hash)
{
size_t i, j;
int *order;
- check (hmapx_is_empty (hmapx) == (cnt == 0));
- check (hmapx_count (hmapx) == cnt);
- check (cnt <= hmapx_capacity (hmapx));
+ check (hmapx_is_empty (hmapx) == (n == 0));
+ check (hmapx_count (hmapx) == n);
+ check (n <= hmapx_capacity (hmapx));
- order = xmemdup (data, cnt * sizeof *data);
- qsort (order, cnt, sizeof *order, compare_ints);
+ order = xmemdup (data, n * sizeof *data);
+ qsort (order, n, sizeof *order, compare_ints);
- for (i = 0; i < cnt; i = j)
+ for (i = 0; i < n; i = j)
{
struct hmapx_node *node;
struct element *e;
int count;
- for (j = i + 1; j < cnt; j++)
+ for (j = i + 1; j < n; j++)
if (order[i] != order[j])
break;
check (find_element (hmapx, -1, hash) == NULL);
- if (cnt == 0)
+ if (n == 0)
check (hmapx_first (hmapx) == NULL);
else
{
struct hmapx_node *p;
int left;
- left = cnt;
- for (p = hmapx_first (hmapx), i = 0; i < cnt;
+ left = n;
+ for (p = hmapx_first (hmapx), i = 0; i < n;
p = hmapx_next (hmapx, p), i++)
{
struct element *e = hmapx_node_data (p);
free (order);
}
-/* Inserts the CNT values from 0 to CNT - 1 (inclusive) into an
+/* Inserts the N values from 0 to N - 1 (inclusive) into an
HMAPX in the order specified by INSERTIONS, then deletes them in
the order specified by DELETIONS, checking the HMAPX's contents
for correctness after each operation. Uses HASH as the hash
static void
test_insert_delete (const int insertions[],
const int deletions[],
- size_t cnt,
+ size_t n,
hash_function *hash,
size_t reserve)
{
struct hmapx hmapx;
size_t i;
- elements = xnmalloc (cnt, sizeof *elements);
- nodes = xnmalloc (cnt, sizeof *nodes);
- for (i = 0; i < cnt; i++)
+ elements = xnmalloc (n, sizeof *elements);
+ nodes = xnmalloc (n, sizeof *nodes);
+ for (i = 0; i < n; i++)
elements[i].data = i;
hmapx_init (&hmapx);
hmapx_reserve (&hmapx, reserve);
check_hmapx (&hmapx, NULL, 0, hash);
- for (i = 0; i < cnt; i++)
+ for (i = 0; i < n; i++)
{
struct hmapx_node *(*insert) (struct hmapx *, void *, size_t hash);
size_t capacity;
check (capacity == hmapx_capacity (&hmapx));
}
}
- for (i = 0; i < cnt; i++)
+ for (i = 0; i < n; i++)
{
hmapx_delete (&hmapx, nodes[deletions[i]]);
- check_hmapx (&hmapx, deletions + i + 1, cnt - i - 1, hash);
+ check_hmapx (&hmapx, deletions + i + 1, n - i - 1, hash);
}
hmapx_destroy (&hmapx);
test_insert_any_remove_any (hash_function *hash)
{
const int max_elems = 5;
- int cnt;
+ int n;
- for (cnt = 0; cnt <= max_elems; cnt++)
+ for (n = 0; n <= max_elems; n++)
{
int *insertions, *deletions;
unsigned int ins_n_perms;
int i;
- insertions = xnmalloc (cnt, sizeof *insertions);
- deletions = xnmalloc (cnt, sizeof *deletions);
- for (i = 0; i < cnt; i++)
+ insertions = xnmalloc (n, sizeof *insertions);
+ deletions = xnmalloc (n, sizeof *deletions);
+ for (i = 0; i < n; i++)
insertions[i] = i;
for (ins_n_perms = 0;
- ins_n_perms == 0 || next_permutation (insertions, cnt);
+ ins_n_perms == 0 || next_permutation (insertions, n);
ins_n_perms++)
{
unsigned int del_n_perms;
int i;
- for (i = 0; i < cnt; i++)
+ for (i = 0; i < n; i++)
deletions[i] = i;
for (del_n_perms = 0;
- del_n_perms == 0 || next_permutation (deletions, cnt);
+ del_n_perms == 0 || next_permutation (deletions, n);
del_n_perms++)
- test_insert_delete (insertions, deletions, cnt, hash, 1);
+ test_insert_delete (insertions, deletions, n, hash, 1);
- check (del_n_perms == factorial (cnt));
+ check (del_n_perms == factorial (n));
}
- check (ins_n_perms == factorial (cnt));
+ check (ins_n_perms == factorial (n));
free (insertions);
free (deletions);
test_insert_any_remove_same (hash_function *hash)
{
const int max_elems = 7;
- int cnt;
+ int n;
- for (cnt = 0; cnt <= max_elems; cnt++)
+ for (n = 0; n <= max_elems; n++)
{
int *values;
unsigned int n_permutations;
int i;
- values = xnmalloc (cnt, sizeof *values);
- for (i = 0; i < cnt; i++)
+ values = xnmalloc (n, sizeof *values);
+ for (i = 0; i < n; i++)
values[i] = i;
for (n_permutations = 0;
- n_permutations == 0 || next_permutation (values, cnt);
+ n_permutations == 0 || next_permutation (values, n);
n_permutations++)
- test_insert_delete (values, values, cnt, hash, cnt / 2);
- check (n_permutations == factorial (cnt));
+ test_insert_delete (values, values, n, hash, n / 2);
+ check (n_permutations == factorial (n));
free (values);
}
test_insert_any_remove_reverse (hash_function *hash)
{
const int max_elems = 7;
- int cnt;
+ int n;
- for (cnt = 0; cnt <= max_elems; cnt++)
+ for (n = 0; n <= max_elems; n++)
{
int *insertions, *deletions;
unsigned int n_permutations;
int i;
- insertions = xnmalloc (cnt, sizeof *insertions);
- deletions = xnmalloc (cnt, sizeof *deletions);
- for (i = 0; i < cnt; i++)
+ insertions = xnmalloc (n, sizeof *insertions);
+ deletions = xnmalloc (n, sizeof *deletions);
+ for (i = 0; i < n; i++)
insertions[i] = i;
for (n_permutations = 0;
- n_permutations == 0 || next_permutation (insertions, cnt);
+ n_permutations == 0 || next_permutation (insertions, n);
n_permutations++)
{
- memcpy (deletions, insertions, sizeof *insertions * cnt);
- reverse (deletions, cnt);
+ memcpy (deletions, insertions, sizeof *insertions * n);
+ reverse (deletions, n);
- test_insert_delete (insertions, deletions, cnt, hash, cnt);
+ test_insert_delete (insertions, deletions, n, hash, n);
}
- check (n_permutations == factorial (cnt));
+ check (n_permutations == factorial (n));
free (insertions);
free (deletions);
test_random_sequence (int max_elems, hash_function *hash)
{
const int max_trials = 8;
- int cnt;
+ int n;
- for (cnt = 0; cnt <= max_elems; cnt += 2)
+ for (n = 0; n <= max_elems; n += 2)
{
int *insertions, *deletions;
int trial;
int i;
- insertions = xnmalloc (cnt, sizeof *insertions);
- deletions = xnmalloc (cnt, sizeof *deletions);
- for (i = 0; i < cnt; i++)
+ insertions = xnmalloc (n, sizeof *insertions);
+ deletions = xnmalloc (n, sizeof *deletions);
+ for (i = 0; i < n; i++)
insertions[i] = i;
- for (i = 0; i < cnt; i++)
+ for (i = 0; i < n; i++)
deletions[i] = i;
for (trial = 0; trial < max_trials; trial++)
{
- random_shuffle (insertions, cnt, sizeof *insertions);
- random_shuffle (deletions, cnt, sizeof *deletions);
+ random_shuffle (insertions, n, sizeof *insertions);
+ random_shuffle (deletions, n, sizeof *deletions);
- test_insert_delete (insertions, deletions, cnt, hash, 0);
+ test_insert_delete (insertions, deletions, n, hash, 0);
}
free (insertions);
test_changed (hash_function *hash)
{
const int max_elems = 6;
- int cnt;
+ int n;
- for (cnt = 0; cnt <= max_elems; cnt++)
+ for (n = 0; n <= max_elems; n++)
{
int *values, *changed_values;
struct hmapx_node **nodes;
unsigned int n_permutations;
int i;
- values = xnmalloc (cnt, sizeof *values);
- changed_values = xnmalloc (cnt, sizeof *changed_values);
- elements = xnmalloc (cnt, sizeof *elements);
- nodes = xnmalloc (cnt, sizeof *nodes);
- for (i = 0; i < cnt; i++)
+ values = xnmalloc (n, sizeof *values);
+ changed_values = xnmalloc (n, sizeof *changed_values);
+ elements = xnmalloc (n, sizeof *elements);
+ nodes = xnmalloc (n, sizeof *nodes);
+ for (i = 0; i < n; i++)
values[i] = i;
for (n_permutations = 0;
- n_permutations == 0 || next_permutation (values, cnt);
+ n_permutations == 0 || next_permutation (values, n);
n_permutations++)
{
- for (i = 0; i < cnt; i++)
+ for (i = 0; i < n; i++)
{
int j, k;
- for (j = 0; j <= cnt; j++)
+ for (j = 0; j <= n; j++)
{
struct hmapx hmapx;
hmapx_init (&hmapx);
/* Add to HMAPX in order. */
- for (k = 0; k < cnt; k++)
+ for (k = 0; k < n; k++)
{
int n = values[k];
elements[n].data = n;
nodes[n] = hmapx_insert (&hmapx, &elements[n],
hash (elements[n].data));
}
- check_hmapx (&hmapx, values, cnt, hash);
+ check_hmapx (&hmapx, values, n, hash);
/* Change value i to j. */
elements[i].data = j;
hmapx_changed (&hmapx, nodes[i],
hash (elements[i].data));
- for (k = 0; k < cnt; k++)
+ for (k = 0; k < n; k++)
changed_values[k] = k;
changed_values[i] = j;
- check_hmapx (&hmapx, changed_values, cnt, hash);
+ check_hmapx (&hmapx, changed_values, n, hash);
hmapx_destroy (&hmapx);
}
}
}
- check (n_permutations == factorial (cnt));
+ check (n_permutations == factorial (n));
free (values);
free (changed_values);
test_change (hash_function *hash)
{
const int max_elems = 6;
- int cnt;
+ int n;
- for (cnt = 0; cnt <= max_elems; cnt++)
+ for (n = 0; n <= max_elems; n++)
{
int *values, *changed_values;
struct hmapx_node **nodes;
unsigned int n_permutations;
int i;
- values = xnmalloc (cnt, sizeof *values);
- changed_values = xnmalloc (cnt, sizeof *changed_values);
- elements = xnmalloc (cnt, sizeof *elements);
- nodes = xnmalloc (cnt, sizeof *nodes);
- for (i = 0; i < cnt; i++)
+ values = xnmalloc (n, sizeof *values);
+ changed_values = xnmalloc (n, sizeof *changed_values);
+ elements = xnmalloc (n, sizeof *elements);
+ nodes = xnmalloc (n, sizeof *nodes);
+ for (i = 0; i < n; i++)
values[i] = i;
for (n_permutations = 0;
- n_permutations == 0 || next_permutation (values, cnt);
+ n_permutations == 0 || next_permutation (values, n);
n_permutations++)
{
- for (i = 0; i < cnt; i++)
+ for (i = 0; i < n; i++)
{
int j, k;
- for (j = 0; j <= cnt; j++)
+ for (j = 0; j <= n; j++)
{
struct hmapx hmapx;
hmapx_init (&hmapx);
/* Add to HMAPX in order. */
- for (k = 0; k < cnt; k++)
+ for (k = 0; k < n; k++)
{
int n = values[k];
elements[n].data = n;
nodes[n] = hmapx_insert (&hmapx, &elements[n],
hash (elements[n].data));
}
- check_hmapx (&hmapx, values, cnt, hash);
+ check_hmapx (&hmapx, values, n, hash);
/* Change value i to j. */
replacement.data = j;
hmapx_change (&hmapx, nodes[i], &replacement, hash (j));
- for (k = 0; k < cnt; k++)
+ for (k = 0; k < n; k++)
changed_values[k] = k;
changed_values[i] = j;
- check_hmapx (&hmapx, changed_values, cnt, hash);
+ check_hmapx (&hmapx, changed_values, n, hash);
hmapx_destroy (&hmapx);
}
}
}
- check (n_permutations == factorial (cnt));
+ check (n_permutations == factorial (n));
free (values);
free (changed_values);
struct hmapx_node **nodes;
int *values;
struct hmapx hmapx;
- int cnt;
+ int n;
elements = xnmalloc (max_elems, sizeof *elements);
nodes = xnmalloc (max_elems, sizeof *nodes);
values = xnmalloc (max_elems, sizeof *values);
hmapx_init (&hmapx);
- for (cnt = 0; cnt <= max_elems; cnt++)
+ for (n = 0; n <= max_elems; n++)
{
int i;
- for (i = 0; i < cnt; i++)
+ for (i = 0; i < n; i++)
{
values[i] = elements[i].data = i;
nodes[i] = hmapx_insert (&hmapx, &elements[i],
projects / pspp / blobdiff