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Functions
_int_tool.c File Reference
#include "postgres.h"
#include <limits.h>
#include "_int.h"
#include "catalog/pg_type.h"
#include "lib/qunique.h"
Include dependency graph for _int_tool.c:

Go to the source code of this file.

Functions

bool inner_int_contains (ArrayType *a, ArrayType *b)
 
bool inner_int_overlap (ArrayType *a, ArrayType *b)
 
ArrayType * inner_int_union (ArrayType *a, ArrayType *b)
 
ArrayType * inner_int_inter (ArrayType *a, ArrayType *b)
 
void rt__int_size (ArrayType *a, float *size)
 
static int isort_cmp (const void *a, const void *b, void *arg)
 
bool isort (int32 *a, int len)
 
ArrayType * new_intArrayType (int num)
 
ArrayType * resize_intArrayType (ArrayType *a, int num)
 
ArrayType * copy_intArrayType (ArrayType *a)
 
int internal_size (int *a, int len)
 
ArrayType * _int_unique (ArrayType *r)
 
void gensign (BITVECP sign, int *a, int len, int siglen)
 
int32 intarray_match_first (ArrayType *a, int32 elem)
 
ArrayType * intarray_add_elem (ArrayType *a, int32 elem)
 
ArrayType * intarray_concat_arrays (ArrayType *a, ArrayType *b)
 
ArrayType * int_to_intset (int32 elem)
 
int compASC (const void *a, const void *b)
 
int compDESC (const void *a, const void *b)
 

Function Documentation

◆ _int_unique()

ArrayType* _int_unique ( ArrayType *  r)

Definition at line 310 of file _int_tool.c.

311 {
312  int num = ARRNELEMS(r);
313  bool duplicates_found; /* not used */
314 
315  num = qunique_arg(ARRPTR(r), num, sizeof(int), isort_cmp,
316  &duplicates_found);
317 
318  return resize_intArrayType(r, num);
319 }
isort_cmp
static int isort_cmp(const void *a, const void *b, void *arg)
Definition: _int_tool.c:190
resize_intArrayType
ArrayType * resize_intArrayType(ArrayType *a, int num)
Definition: _int_tool.c:249
ARRNELEMS
#define ARRNELEMS(x)
Definition: cube.c:26
ARRPTR
#define ARRPTR(x)
Definition: cube.c:25
qunique_arg
static size_t qunique_arg(void *array, size_t elements, size_t width, int(*compare)(const void *, const void *, void *), void *arg)
Definition: qunique.h:46

References ARRNELEMS, ARRPTR, isort_cmp(), qunique_arg(), and resize_intArrayType().

Referenced by g_int_union(), inner_int_union(), intset_subtract(), intset_union_elem(), and uniq().

◆ compASC()

int compASC ( const void *  a,
const void *  b 
)

Definition at line 397 of file _int_tool.c.

398 {
399  if (*(const int32 *) a == *(const int32 *) b)
400  return 0;
401  return (*(const int32 *) a > *(const int32 *) b) ? 1 : -1;
402 }
int32
signed int int32
Definition: c.h:483
b
int b
Definition: isn.c:70
a
int a
Definition: isn.c:69

References a, and b.

◆ compDESC()

int compDESC ( const void *  a,
const void *  b 
)

Definition at line 405 of file _int_tool.c.

406 {
407  if (*(const int32 *) a == *(const int32 *) b)
408  return 0;
409  return (*(const int32 *) a < *(const int32 *) b) ? 1 : -1;
410 }

References a, and b.

◆ copy_intArrayType()

ArrayType* copy_intArrayType ( ArrayType *  a)

Definition at line 280 of file _int_tool.c.

281 {
282  ArrayType *r;
283  int n = ARRNELEMS(a);
284 
285  r = new_intArrayType(n);
286  memcpy(ARRPTR(r), ARRPTR(a), n * sizeof(int32));
287  return r;
288 }
new_intArrayType
ArrayType * new_intArrayType(int num)
Definition: _int_tool.c:221

References a, ARRNELEMS, ARRPTR, and new_intArrayType().

Referenced by g_int_picksplit(), and inner_int_union().

◆ gensign()

void gensign ( BITVECP  sign,
int *  a,
int  len,
int  siglen 
)

Definition at line 322 of file _int_tool.c.

323 {
324  int i;
325 
326  /* we assume that the sign vector is previously zeroed */
327  for (i = 0; i < len; i++)
328  {
329  HASH(sign, *a, siglen);
330  a++;
331  }
332 }
HASH
#define HASH(sign, val, siglen)
Definition: hstore_gist.c:45
sign
char sign
Definition: informix.c:668
i
int i
Definition: isn.c:73
len
const void size_t len
Definition: pg_crc32c_sse42.c:24

References a, HASH, i, len, and sign.

◆ inner_int_contains()

bool inner_int_contains ( ArrayType *  a,
ArrayType *  b 
)

Definition at line 14 of file _int_tool.c.

15 {
16  int na,
17  nb;
18  int i,
19  j,
20  n;
21  int *da,
22  *db;
23 
24  na = ARRNELEMS(a);
25  nb = ARRNELEMS(b);
26  da = ARRPTR(a);
27  db = ARRPTR(b);
28 
29  i = j = n = 0;
30  while (i < na && j < nb)
31  {
32  if (da[i] < db[j])
33  i++;
34  else if (da[i] == db[j])
35  {
36  n++;
37  i++;
38  j++;
39  }
40  else
41  break; /* db[j] is not in da */
42  }
43 
44  return (n == nb);
45 }
j
int j
Definition: isn.c:74

References a, ARRNELEMS, ARRPTR, b, i, and j.

Referenced by _int_contains(), and g_int_consistent().

◆ inner_int_inter()

ArrayType* inner_int_inter ( ArrayType *  a,
ArrayType *  b 
)

Definition at line 135 of file _int_tool.c.

136 {
137  ArrayType *r;
138  int na,
139  nb;
140  int *da,
141  *db,
142  *dr;
143  int i,
144  j,
145  k;
146 
147  if (ARRISEMPTY(a) || ARRISEMPTY(b))
148  return new_intArrayType(0);
149 
150  na = ARRNELEMS(a);
151  nb = ARRNELEMS(b);
152  da = ARRPTR(a);
153  db = ARRPTR(b);
154  r = new_intArrayType(Min(na, nb));
155  dr = ARRPTR(r);
156 
157  i = j = k = 0;
158  while (i < na && j < nb)
159  {
160  if (da[i] < db[j])
161  i++;
162  else if (da[i] == db[j])
163  {
164  if (k == 0 || dr[k - 1] != db[j])
165  dr[k++] = db[j];
166  i++;
167  j++;
168  }
169  else
170  j++;
171  }
172 
173  if (k == 0)
174  {
175  pfree(r);
176  return new_intArrayType(0);
177  }
178  else
179  return resize_intArrayType(r, k);
180 }
ARRISEMPTY
#define ARRISEMPTY(x)
Definition: _int.h:38
Min
#define Min(x, y)
Definition: c.h:993
pfree
void pfree(void *pointer)
Definition: mcxt.c:1456

References a, ARRISEMPTY, ARRNELEMS, ARRPTR, b, i, j, Min, new_intArrayType(), pfree(), and resize_intArrayType().

Referenced by _int_inter(), and g_int_picksplit().

◆ inner_int_overlap()

bool inner_int_overlap ( ArrayType *  a,
ArrayType *  b 
)

Definition at line 49 of file _int_tool.c.

50 {
51  int na,
52  nb;
53  int i,
54  j;
55  int *da,
56  *db;
57 
58  na = ARRNELEMS(a);
59  nb = ARRNELEMS(b);
60  da = ARRPTR(a);
61  db = ARRPTR(b);
62 
63  i = j = 0;
64  while (i < na && j < nb)
65  {
66  if (da[i] < db[j])
67  i++;
68  else if (da[i] == db[j])
69  return true;
70  else
71  j++;
72  }
73 
74  return false;
75 }

References a, ARRNELEMS, ARRPTR, b, i, and j.

Referenced by _int_overlap(), and g_int_consistent().

◆ inner_int_union()

ArrayType* inner_int_union ( ArrayType *  a,
ArrayType *  b 
)

Definition at line 78 of file _int_tool.c.

79 {
80  ArrayType *r = NULL;
81 
82  CHECKARRVALID(a);
83  CHECKARRVALID(b);
84 
85  if (ARRISEMPTY(a) && ARRISEMPTY(b))
86  return new_intArrayType(0);
87  if (ARRISEMPTY(a))
88  r = copy_intArrayType(b);
89  if (ARRISEMPTY(b))
90  r = copy_intArrayType(a);
91 
92  if (!r)
93  {
94  int na = ARRNELEMS(a),
95  nb = ARRNELEMS(b);
96  int *da = ARRPTR(a),
97  *db = ARRPTR(b);
98  int i,
99  j,
100  *dr;
101 
102  r = new_intArrayType(na + nb);
103  dr = ARRPTR(r);
104 
105  /* union */
106  i = j = 0;
107  while (i < na && j < nb)
108  {
109  if (da[i] == db[j])
110  {
111  *dr++ = da[i++];
112  j++;
113  }
114  else if (da[i] < db[j])
115  *dr++ = da[i++];
116  else
117  *dr++ = db[j++];
118  }
119 
120  while (i < na)
121  *dr++ = da[i++];
122  while (j < nb)
123  *dr++ = db[j++];
124 
125  r = resize_intArrayType(r, dr - ARRPTR(r));
126  }
127 
128  if (ARRNELEMS(r) > 1)
129  r = _int_unique(r);
130 
131  return r;
132 }
CHECKARRVALID
#define CHECKARRVALID(x)
Definition: _int.h:30
copy_intArrayType
ArrayType * copy_intArrayType(ArrayType *a)
Definition: _int_tool.c:280
_int_unique
ArrayType * _int_unique(ArrayType *r)
Definition: _int_tool.c:310

References _int_unique(), a, ARRISEMPTY, ARRNELEMS, ARRPTR, b, CHECKARRVALID, copy_intArrayType(), i, j, new_intArrayType(), and resize_intArrayType().

Referenced by _int_union(), g_int_penalty(), and g_int_picksplit().

◆ int_to_intset()

ArrayType* int_to_intset ( int32  elem)

Definition at line 385 of file _int_tool.c.

386 {
387  ArrayType *result;
388  int32 *aa;
389 
390  result = new_intArrayType(1);
391  aa = ARRPTR(result);
392  aa[0] = elem;
393  return result;
394 }

References ARRPTR, and new_intArrayType().

Referenced by intset().

◆ intarray_add_elem()

ArrayType* intarray_add_elem ( ArrayType *  a,
int32  elem 
)

Definition at line 351 of file _int_tool.c.

352 {
353  ArrayType *result;
354  int32 *r;
355  int32 c;
356 
357  CHECKARRVALID(a);
358  c = ARRNELEMS(a);
359  result = new_intArrayType(c + 1);
360  r = ARRPTR(result);
361  if (c > 0)
362  memcpy(r, ARRPTR(a), c * sizeof(int32));
363  r[c] = elem;
364  return result;
365 }
c
char * c
Definition: preproc-cursor.c:31

References a, ARRNELEMS, ARRPTR, CHECKARRVALID, and new_intArrayType().

Referenced by intarray_push_elem(), and intset_union_elem().

◆ intarray_concat_arrays()

ArrayType* intarray_concat_arrays ( ArrayType *  a,
ArrayType *  b 
)

Definition at line 368 of file _int_tool.c.

369 {
370  ArrayType *result;
371  int32 ac = ARRNELEMS(a);
372  int32 bc = ARRNELEMS(b);
373 
374  CHECKARRVALID(a);
375  CHECKARRVALID(b);
376  result = new_intArrayType(ac + bc);
377  if (ac)
378  memcpy(ARRPTR(result), ARRPTR(a), ac * sizeof(int32));
379  if (bc)
380  memcpy(ARRPTR(result) + ac, ARRPTR(b), bc * sizeof(int32));
381  return result;
382 }

References a, ARRNELEMS, ARRPTR, b, CHECKARRVALID, and new_intArrayType().

Referenced by intarray_push_array().

◆ intarray_match_first()

int32 intarray_match_first ( ArrayType *  a,
int32  elem 
)

Definition at line 335 of file _int_tool.c.

336 {
337  int32 *aa,
338  c,
339  i;
340 
341  CHECKARRVALID(a);
342  c = ARRNELEMS(a);
343  aa = ARRPTR(a);
344  for (i = 0; i < c; i++)
345  if (aa[i] == elem)
346  return (i + 1);
347  return 0;
348 }

References a, ARRNELEMS, ARRPTR, CHECKARRVALID, and i.

Referenced by idx().

◆ internal_size()

int internal_size ( int *  a,
int  len 
)

Definition at line 292 of file _int_tool.c.

293 {
294  int i;
295  int64 size = 0;
296 
297  for (i = 0; i < len; i += 2)
298  {
299  if (!i || a[i] != a[i - 1]) /* do not count repeated range */
300  size += (int64) (a[i + 1]) - (int64) (a[i]) + 1;
301  }
302 
303  if (size > (int64) INT_MAX || size < (int64) INT_MIN)
304  return -1; /* overflow */
305  return (int) size;
306 }

References a, i, and len.

Referenced by g_int_compress(), and g_int_decompress().

◆ isort()

bool isort ( int32 *  a,
int  len 
)

Definition at line 211 of file _int_tool.c.

212 {
213  bool r = false;
214 
215  qsort_arg(a, len, sizeof(int32), isort_cmp, &r);
216  return r;
217 }
qsort_arg
void qsort_arg(void *base, size_t nel, size_t elsize, qsort_arg_comparator cmp, void *arg)

References a, isort_cmp(), len, and qsort_arg().

◆ isort_cmp()

static int isort_cmp ( const void *  a,
const void *  b,
void *  arg 
)
static

Definition at line 190 of file _int_tool.c.

191 {
192  int32 aval = *((const int32 *) a);
193  int32 bval = *((const int32 *) b);
194 
195  if (aval < bval)
196  return -1;
197  if (aval > bval)
198  return 1;
199 
200  /*
201  * Report if we have any duplicates. If there are equal keys, qsort must
202  * compare them at some point, else it wouldn't know whether one should go
203  * before or after the other.
204  */
205  *((bool *) arg) = true;
206  return 0;
207 }
arg
void * arg
Definition: pg_backup_utils.c:27

References a, arg, and b.

Referenced by _int_unique(), and isort().

◆ new_intArrayType()

ArrayType* new_intArrayType ( int  num)

Definition at line 221 of file _int_tool.c.

222 {
223  ArrayType *r;
224  int nbytes;
225 
226  /* if no elements, return a zero-dimensional array */
227  if (num <= 0)
228  {
229  Assert(num == 0);
230  r = construct_empty_array(INT4OID);
231  return r;
232  }
233 
234  nbytes = ARR_OVERHEAD_NONULLS(1) + sizeof(int) * num;
235 
236  r = (ArrayType *) palloc0(nbytes);
237 
238  SET_VARSIZE(r, nbytes);
239  ARR_NDIM(r) = 1;
240  r->dataoffset = 0; /* marker for no null bitmap */
241  ARR_ELEMTYPE(r) = INT4OID;
242  ARR_DIMS(r)[0] = num;
243  ARR_LBOUND(r)[0] = 1;
244 
245  return r;
246 }
ARR_NDIM
#define ARR_NDIM(a)
Definition: array.h:290
ARR_ELEMTYPE
#define ARR_ELEMTYPE(a)
Definition: array.h:292
ARR_OVERHEAD_NONULLS
#define ARR_OVERHEAD_NONULLS(ndims)
Definition: array.h:310
ARR_DIMS
#define ARR_DIMS(a)
Definition: array.h:294
ARR_LBOUND
#define ARR_LBOUND(a)
Definition: array.h:296
construct_empty_array
ArrayType * construct_empty_array(Oid elmtype)
Definition: arrayfuncs.c:3562
Assert
Assert(fmt[strlen(fmt) - 1] !='\n')
palloc0
void * palloc0(Size size)
Definition: mcxt.c:1257
ArrayType::dataoffset
int32 dataoffset
Definition: array.h:96
SET_VARSIZE
#define SET_VARSIZE(PTR, len)
Definition: varatt.h:305

References ARR_DIMS, ARR_ELEMTYPE, ARR_LBOUND, ARR_NDIM, ARR_OVERHEAD_NONULLS, Assert(), construct_empty_array(), ArrayType::dataoffset, palloc0(), and SET_VARSIZE.

Referenced by copy_intArrayType(), g_int_decompress(), g_int_union(), inner_int_inter(), inner_int_union(), int_to_intset(), intarray_add_elem(), intarray_concat_arrays(), intset_subtract(), and subarray().

◆ resize_intArrayType()

ArrayType* resize_intArrayType ( ArrayType *  a,
int  num 
)

Definition at line 249 of file _int_tool.c.

250 {
251  int nbytes;
252  int i;
253 
254  /* if no elements, return a zero-dimensional array */
255  if (num <= 0)
256  {
257  Assert(num == 0);
258  a = construct_empty_array(INT4OID);
259  return a;
260  }
261 
262  if (num == ARRNELEMS(a))
263  return a;
264 
265  nbytes = ARR_DATA_OFFSET(a) + sizeof(int) * num;
266 
267  a = (ArrayType *) repalloc(a, nbytes);
268 
269  SET_VARSIZE(a, nbytes);
270  /* usually the array should be 1-D already, but just in case ... */
271  for (i = 0; i < ARR_NDIM(a); i++)
272  {
273  ARR_DIMS(a)[i] = num;
274  num = 1;
275  }
276  return a;
277 }
ARR_DATA_OFFSET
#define ARR_DATA_OFFSET(a)
Definition: array.h:316
repalloc
void * repalloc(void *pointer, Size size)
Definition: mcxt.c:1476

References a, ARR_DATA_OFFSET, ARR_DIMS, ARR_NDIM, ARRNELEMS, Assert(), construct_empty_array(), i, repalloc(), and SET_VARSIZE.

Referenced by _int_unique(), g_int_compress(), inner_int_inter(), inner_int_union(), intarray_del_elem(), and intset_subtract().

◆ rt__int_size()

void rt__int_size ( ArrayType *  a,
float *  size 
)

Definition at line 183 of file _int_tool.c.

184 {
185  *size = (float) ARRNELEMS(a);
186 }

References a, and ARRNELEMS.

Referenced by g_int_penalty(), and g_int_picksplit().