Line data Source code
1 : /*-------------------------------------------------------------------------
2 : *
3 : * int8.c
4 : * Internal 64-bit integer operations
5 : *
6 : * Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
7 : * Portions Copyright (c) 1994, Regents of the University of California
8 : *
9 : * IDENTIFICATION
10 : * src/backend/utils/adt/int8.c
11 : *
12 : *-------------------------------------------------------------------------
13 : */
14 : #include "postgres.h"
15 :
16 : #include <ctype.h>
17 : #include <limits.h>
18 : #include <math.h>
19 :
20 : #include "common/int.h"
21 : #include "funcapi.h"
22 : #include "libpq/pqformat.h"
23 : #include "nodes/nodeFuncs.h"
24 : #include "nodes/supportnodes.h"
25 : #include "optimizer/optimizer.h"
26 : #include "utils/builtins.h"
27 :
28 :
29 : typedef struct
30 : {
31 : int64 current;
32 : int64 finish;
33 : int64 step;
34 : } generate_series_fctx;
35 :
36 :
37 : /***********************************************************************
38 : **
39 : ** Routines for 64-bit integers.
40 : **
41 : ***********************************************************************/
42 :
43 : /*----------------------------------------------------------
44 : * Formatting and conversion routines.
45 : *---------------------------------------------------------*/
46 :
47 : /* int8in()
48 : */
49 : Datum
50 135924 : int8in(PG_FUNCTION_ARGS)
51 : {
52 135924 : char *num = PG_GETARG_CSTRING(0);
53 :
54 135924 : PG_RETURN_INT64(pg_strtoint64_safe(num, fcinfo->context));
55 : }
56 :
57 :
58 : /* int8out()
59 : */
60 : Datum
61 309406 : int8out(PG_FUNCTION_ARGS)
62 : {
63 309406 : int64 val = PG_GETARG_INT64(0);
64 : char buf[MAXINT8LEN + 1];
65 : char *result;
66 : int len;
67 :
68 309406 : len = pg_lltoa(val, buf) + 1;
69 :
70 : /*
71 : * Since the length is already known, we do a manual palloc() and memcpy()
72 : * to avoid the strlen() call that would otherwise be done in pstrdup().
73 : */
74 309406 : result = palloc(len);
75 309406 : memcpy(result, buf, len);
76 309406 : PG_RETURN_CSTRING(result);
77 : }
78 :
79 : /*
80 : * int8recv - converts external binary format to int8
81 : */
82 : Datum
83 24 : int8recv(PG_FUNCTION_ARGS)
84 : {
85 24 : StringInfo buf = (StringInfo) PG_GETARG_POINTER(0);
86 :
87 24 : PG_RETURN_INT64(pq_getmsgint64(buf));
88 : }
89 :
90 : /*
91 : * int8send - converts int8 to binary format
92 : */
93 : Datum
94 4946 : int8send(PG_FUNCTION_ARGS)
95 : {
96 4946 : int64 arg1 = PG_GETARG_INT64(0);
97 : StringInfoData buf;
98 :
99 4946 : pq_begintypsend(&buf);
100 4946 : pq_sendint64(&buf, arg1);
101 4946 : PG_RETURN_BYTEA_P(pq_endtypsend(&buf));
102 : }
103 :
104 :
105 : /*----------------------------------------------------------
106 : * Relational operators for int8s, including cross-data-type comparisons.
107 : *---------------------------------------------------------*/
108 :
109 : /* int8relop()
110 : * Is val1 relop val2?
111 : */
112 : Datum
113 352546 : int8eq(PG_FUNCTION_ARGS)
114 : {
115 352546 : int64 val1 = PG_GETARG_INT64(0);
116 352546 : int64 val2 = PG_GETARG_INT64(1);
117 :
118 352546 : PG_RETURN_BOOL(val1 == val2);
119 : }
120 :
121 : Datum
122 60050 : int8ne(PG_FUNCTION_ARGS)
123 : {
124 60050 : int64 val1 = PG_GETARG_INT64(0);
125 60050 : int64 val2 = PG_GETARG_INT64(1);
126 :
127 60050 : PG_RETURN_BOOL(val1 != val2);
128 : }
129 :
130 : Datum
131 626674 : int8lt(PG_FUNCTION_ARGS)
132 : {
133 626674 : int64 val1 = PG_GETARG_INT64(0);
134 626674 : int64 val2 = PG_GETARG_INT64(1);
135 :
136 626674 : PG_RETURN_BOOL(val1 < val2);
137 : }
138 :
139 : Datum
140 247026 : int8gt(PG_FUNCTION_ARGS)
141 : {
142 247026 : int64 val1 = PG_GETARG_INT64(0);
143 247026 : int64 val2 = PG_GETARG_INT64(1);
144 :
145 247026 : PG_RETURN_BOOL(val1 > val2);
146 : }
147 :
148 : Datum
149 5416 : int8le(PG_FUNCTION_ARGS)
150 : {
151 5416 : int64 val1 = PG_GETARG_INT64(0);
152 5416 : int64 val2 = PG_GETARG_INT64(1);
153 :
154 5416 : PG_RETURN_BOOL(val1 <= val2);
155 : }
156 :
157 : Datum
158 5646 : int8ge(PG_FUNCTION_ARGS)
159 : {
160 5646 : int64 val1 = PG_GETARG_INT64(0);
161 5646 : int64 val2 = PG_GETARG_INT64(1);
162 :
163 5646 : PG_RETURN_BOOL(val1 >= val2);
164 : }
165 :
166 : /* int84relop()
167 : * Is 64-bit val1 relop 32-bit val2?
168 : */
169 : Datum
170 198756 : int84eq(PG_FUNCTION_ARGS)
171 : {
172 198756 : int64 val1 = PG_GETARG_INT64(0);
173 198756 : int32 val2 = PG_GETARG_INT32(1);
174 :
175 198756 : PG_RETURN_BOOL(val1 == val2);
176 : }
177 :
178 : Datum
179 94 : int84ne(PG_FUNCTION_ARGS)
180 : {
181 94 : int64 val1 = PG_GETARG_INT64(0);
182 94 : int32 val2 = PG_GETARG_INT32(1);
183 :
184 94 : PG_RETURN_BOOL(val1 != val2);
185 : }
186 :
187 : Datum
188 694528 : int84lt(PG_FUNCTION_ARGS)
189 : {
190 694528 : int64 val1 = PG_GETARG_INT64(0);
191 694528 : int32 val2 = PG_GETARG_INT32(1);
192 :
193 694528 : PG_RETURN_BOOL(val1 < val2);
194 : }
195 :
196 : Datum
197 140228 : int84gt(PG_FUNCTION_ARGS)
198 : {
199 140228 : int64 val1 = PG_GETARG_INT64(0);
200 140228 : int32 val2 = PG_GETARG_INT32(1);
201 :
202 140228 : PG_RETURN_BOOL(val1 > val2);
203 : }
204 :
205 : Datum
206 22178 : int84le(PG_FUNCTION_ARGS)
207 : {
208 22178 : int64 val1 = PG_GETARG_INT64(0);
209 22178 : int32 val2 = PG_GETARG_INT32(1);
210 :
211 22178 : PG_RETURN_BOOL(val1 <= val2);
212 : }
213 :
214 : Datum
215 10030 : int84ge(PG_FUNCTION_ARGS)
216 : {
217 10030 : int64 val1 = PG_GETARG_INT64(0);
218 10030 : int32 val2 = PG_GETARG_INT32(1);
219 :
220 10030 : PG_RETURN_BOOL(val1 >= val2);
221 : }
222 :
223 : /* int48relop()
224 : * Is 32-bit val1 relop 64-bit val2?
225 : */
226 : Datum
227 92002 : int48eq(PG_FUNCTION_ARGS)
228 : {
229 92002 : int32 val1 = PG_GETARG_INT32(0);
230 92002 : int64 val2 = PG_GETARG_INT64(1);
231 :
232 92002 : PG_RETURN_BOOL(val1 == val2);
233 : }
234 :
235 : Datum
236 36 : int48ne(PG_FUNCTION_ARGS)
237 : {
238 36 : int32 val1 = PG_GETARG_INT32(0);
239 36 : int64 val2 = PG_GETARG_INT64(1);
240 :
241 36 : PG_RETURN_BOOL(val1 != val2);
242 : }
243 :
244 : Datum
245 6618 : int48lt(PG_FUNCTION_ARGS)
246 : {
247 6618 : int32 val1 = PG_GETARG_INT32(0);
248 6618 : int64 val2 = PG_GETARG_INT64(1);
249 :
250 6618 : PG_RETURN_BOOL(val1 < val2);
251 : }
252 :
253 : Datum
254 3270 : int48gt(PG_FUNCTION_ARGS)
255 : {
256 3270 : int32 val1 = PG_GETARG_INT32(0);
257 3270 : int64 val2 = PG_GETARG_INT64(1);
258 :
259 3270 : PG_RETURN_BOOL(val1 > val2);
260 : }
261 :
262 : Datum
263 3828 : int48le(PG_FUNCTION_ARGS)
264 : {
265 3828 : int32 val1 = PG_GETARG_INT32(0);
266 3828 : int64 val2 = PG_GETARG_INT64(1);
267 :
268 3828 : PG_RETURN_BOOL(val1 <= val2);
269 : }
270 :
271 : Datum
272 3474 : int48ge(PG_FUNCTION_ARGS)
273 : {
274 3474 : int32 val1 = PG_GETARG_INT32(0);
275 3474 : int64 val2 = PG_GETARG_INT64(1);
276 :
277 3474 : PG_RETURN_BOOL(val1 >= val2);
278 : }
279 :
280 : /* int82relop()
281 : * Is 64-bit val1 relop 16-bit val2?
282 : */
283 : Datum
284 30 : int82eq(PG_FUNCTION_ARGS)
285 : {
286 30 : int64 val1 = PG_GETARG_INT64(0);
287 30 : int16 val2 = PG_GETARG_INT16(1);
288 :
289 30 : PG_RETURN_BOOL(val1 == val2);
290 : }
291 :
292 : Datum
293 30 : int82ne(PG_FUNCTION_ARGS)
294 : {
295 30 : int64 val1 = PG_GETARG_INT64(0);
296 30 : int16 val2 = PG_GETARG_INT16(1);
297 :
298 30 : PG_RETURN_BOOL(val1 != val2);
299 : }
300 :
301 : Datum
302 30 : int82lt(PG_FUNCTION_ARGS)
303 : {
304 30 : int64 val1 = PG_GETARG_INT64(0);
305 30 : int16 val2 = PG_GETARG_INT16(1);
306 :
307 30 : PG_RETURN_BOOL(val1 < val2);
308 : }
309 :
310 : Datum
311 3228 : int82gt(PG_FUNCTION_ARGS)
312 : {
313 3228 : int64 val1 = PG_GETARG_INT64(0);
314 3228 : int16 val2 = PG_GETARG_INT16(1);
315 :
316 3228 : PG_RETURN_BOOL(val1 > val2);
317 : }
318 :
319 : Datum
320 30 : int82le(PG_FUNCTION_ARGS)
321 : {
322 30 : int64 val1 = PG_GETARG_INT64(0);
323 30 : int16 val2 = PG_GETARG_INT16(1);
324 :
325 30 : PG_RETURN_BOOL(val1 <= val2);
326 : }
327 :
328 : Datum
329 3228 : int82ge(PG_FUNCTION_ARGS)
330 : {
331 3228 : int64 val1 = PG_GETARG_INT64(0);
332 3228 : int16 val2 = PG_GETARG_INT16(1);
333 :
334 3228 : PG_RETURN_BOOL(val1 >= val2);
335 : }
336 :
337 : /* int28relop()
338 : * Is 16-bit val1 relop 64-bit val2?
339 : */
340 : Datum
341 1848 : int28eq(PG_FUNCTION_ARGS)
342 : {
343 1848 : int16 val1 = PG_GETARG_INT16(0);
344 1848 : int64 val2 = PG_GETARG_INT64(1);
345 :
346 1848 : PG_RETURN_BOOL(val1 == val2);
347 : }
348 :
349 : Datum
350 3264 : int28ne(PG_FUNCTION_ARGS)
351 : {
352 3264 : int16 val1 = PG_GETARG_INT16(0);
353 3264 : int64 val2 = PG_GETARG_INT64(1);
354 :
355 3264 : PG_RETURN_BOOL(val1 != val2);
356 : }
357 :
358 : Datum
359 3228 : int28lt(PG_FUNCTION_ARGS)
360 : {
361 3228 : int16 val1 = PG_GETARG_INT16(0);
362 3228 : int64 val2 = PG_GETARG_INT64(1);
363 :
364 3228 : PG_RETURN_BOOL(val1 < val2);
365 : }
366 :
367 : Datum
368 3228 : int28gt(PG_FUNCTION_ARGS)
369 : {
370 3228 : int16 val1 = PG_GETARG_INT16(0);
371 3228 : int64 val2 = PG_GETARG_INT64(1);
372 :
373 3228 : PG_RETURN_BOOL(val1 > val2);
374 : }
375 :
376 : Datum
377 3828 : int28le(PG_FUNCTION_ARGS)
378 : {
379 3828 : int16 val1 = PG_GETARG_INT16(0);
380 3828 : int64 val2 = PG_GETARG_INT64(1);
381 :
382 3828 : PG_RETURN_BOOL(val1 <= val2);
383 : }
384 :
385 : Datum
386 3714 : int28ge(PG_FUNCTION_ARGS)
387 : {
388 3714 : int16 val1 = PG_GETARG_INT16(0);
389 3714 : int64 val2 = PG_GETARG_INT64(1);
390 :
391 3714 : PG_RETURN_BOOL(val1 >= val2);
392 : }
393 :
394 : /*
395 : * in_range support function for int8.
396 : *
397 : * Note: we needn't supply int8_int4 or int8_int2 variants, as implicit
398 : * coercion of the offset value takes care of those scenarios just as well.
399 : */
400 : Datum
401 108 : in_range_int8_int8(PG_FUNCTION_ARGS)
402 : {
403 108 : int64 val = PG_GETARG_INT64(0);
404 108 : int64 base = PG_GETARG_INT64(1);
405 108 : int64 offset = PG_GETARG_INT64(2);
406 108 : bool sub = PG_GETARG_BOOL(3);
407 108 : bool less = PG_GETARG_BOOL(4);
408 : int64 sum;
409 :
410 108 : if (offset < 0)
411 0 : ereport(ERROR,
412 : (errcode(ERRCODE_INVALID_PRECEDING_OR_FOLLOWING_SIZE),
413 : errmsg("invalid preceding or following size in window function")));
414 :
415 108 : if (sub)
416 54 : offset = -offset; /* cannot overflow */
417 :
418 108 : if (unlikely(pg_add_s64_overflow(base, offset, &sum)))
419 : {
420 : /*
421 : * If sub is false, the true sum is surely more than val, so correct
422 : * answer is the same as "less". If sub is true, the true sum is
423 : * surely less than val, so the answer is "!less".
424 : */
425 36 : PG_RETURN_BOOL(sub ? !less : less);
426 : }
427 :
428 72 : if (less)
429 36 : PG_RETURN_BOOL(val <= sum);
430 : else
431 36 : PG_RETURN_BOOL(val >= sum);
432 : }
433 :
434 :
435 : /*----------------------------------------------------------
436 : * Arithmetic operators on 64-bit integers.
437 : *---------------------------------------------------------*/
438 :
439 : Datum
440 906 : int8um(PG_FUNCTION_ARGS)
441 : {
442 906 : int64 arg = PG_GETARG_INT64(0);
443 : int64 result;
444 :
445 906 : if (unlikely(arg == PG_INT64_MIN))
446 6 : ereport(ERROR,
447 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
448 : errmsg("bigint out of range")));
449 900 : result = -arg;
450 900 : PG_RETURN_INT64(result);
451 : }
452 :
453 : Datum
454 6 : int8up(PG_FUNCTION_ARGS)
455 : {
456 6 : int64 arg = PG_GETARG_INT64(0);
457 :
458 6 : PG_RETURN_INT64(arg);
459 : }
460 :
461 : Datum
462 129264 : int8pl(PG_FUNCTION_ARGS)
463 : {
464 129264 : int64 arg1 = PG_GETARG_INT64(0);
465 129264 : int64 arg2 = PG_GETARG_INT64(1);
466 : int64 result;
467 :
468 129264 : if (unlikely(pg_add_s64_overflow(arg1, arg2, &result)))
469 12 : ereport(ERROR,
470 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
471 : errmsg("bigint out of range")));
472 129252 : PG_RETURN_INT64(result);
473 : }
474 :
475 : Datum
476 96 : int8mi(PG_FUNCTION_ARGS)
477 : {
478 96 : int64 arg1 = PG_GETARG_INT64(0);
479 96 : int64 arg2 = PG_GETARG_INT64(1);
480 : int64 result;
481 :
482 96 : if (unlikely(pg_sub_s64_overflow(arg1, arg2, &result)))
483 18 : ereport(ERROR,
484 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
485 : errmsg("bigint out of range")));
486 78 : PG_RETURN_INT64(result);
487 : }
488 :
489 : Datum
490 180 : int8mul(PG_FUNCTION_ARGS)
491 : {
492 180 : int64 arg1 = PG_GETARG_INT64(0);
493 180 : int64 arg2 = PG_GETARG_INT64(1);
494 : int64 result;
495 :
496 180 : if (unlikely(pg_mul_s64_overflow(arg1, arg2, &result)))
497 18 : ereport(ERROR,
498 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
499 : errmsg("bigint out of range")));
500 162 : PG_RETURN_INT64(result);
501 : }
502 :
503 : Datum
504 126 : int8div(PG_FUNCTION_ARGS)
505 : {
506 126 : int64 arg1 = PG_GETARG_INT64(0);
507 126 : int64 arg2 = PG_GETARG_INT64(1);
508 : int64 result;
509 :
510 126 : if (arg2 == 0)
511 : {
512 6 : ereport(ERROR,
513 : (errcode(ERRCODE_DIVISION_BY_ZERO),
514 : errmsg("division by zero")));
515 : /* ensure compiler realizes we mustn't reach the division (gcc bug) */
516 : PG_RETURN_NULL();
517 : }
518 :
519 : /*
520 : * INT64_MIN / -1 is problematic, since the result can't be represented on
521 : * a two's-complement machine. Some machines produce INT64_MIN, some
522 : * produce zero, some throw an exception. We can dodge the problem by
523 : * recognizing that division by -1 is the same as negation.
524 : */
525 120 : if (arg2 == -1)
526 : {
527 6 : if (unlikely(arg1 == PG_INT64_MIN))
528 6 : ereport(ERROR,
529 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
530 : errmsg("bigint out of range")));
531 0 : result = -arg1;
532 0 : PG_RETURN_INT64(result);
533 : }
534 :
535 : /* No overflow is possible */
536 :
537 114 : result = arg1 / arg2;
538 :
539 114 : PG_RETURN_INT64(result);
540 : }
541 :
542 : /* int8abs()
543 : * Absolute value
544 : */
545 : Datum
546 36 : int8abs(PG_FUNCTION_ARGS)
547 : {
548 36 : int64 arg1 = PG_GETARG_INT64(0);
549 : int64 result;
550 :
551 36 : if (unlikely(arg1 == PG_INT64_MIN))
552 6 : ereport(ERROR,
553 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
554 : errmsg("bigint out of range")));
555 30 : result = (arg1 < 0) ? -arg1 : arg1;
556 30 : PG_RETURN_INT64(result);
557 : }
558 :
559 : /* int8mod()
560 : * Modulo operation.
561 : */
562 : Datum
563 54 : int8mod(PG_FUNCTION_ARGS)
564 : {
565 54 : int64 arg1 = PG_GETARG_INT64(0);
566 54 : int64 arg2 = PG_GETARG_INT64(1);
567 :
568 54 : if (unlikely(arg2 == 0))
569 : {
570 6 : ereport(ERROR,
571 : (errcode(ERRCODE_DIVISION_BY_ZERO),
572 : errmsg("division by zero")));
573 : /* ensure compiler realizes we mustn't reach the division (gcc bug) */
574 : PG_RETURN_NULL();
575 : }
576 :
577 : /*
578 : * Some machines throw a floating-point exception for INT64_MIN % -1,
579 : * which is a bit silly since the correct answer is perfectly
580 : * well-defined, namely zero.
581 : */
582 48 : if (arg2 == -1)
583 18 : PG_RETURN_INT64(0);
584 :
585 : /* No overflow is possible */
586 :
587 30 : PG_RETURN_INT64(arg1 % arg2);
588 : }
589 :
590 : /*
591 : * Greatest Common Divisor
592 : *
593 : * Returns the largest positive integer that exactly divides both inputs.
594 : * Special cases:
595 : * - gcd(x, 0) = gcd(0, x) = abs(x)
596 : * because 0 is divisible by anything
597 : * - gcd(0, 0) = 0
598 : * complies with the previous definition and is a common convention
599 : *
600 : * Special care must be taken if either input is INT64_MIN ---
601 : * gcd(0, INT64_MIN), gcd(INT64_MIN, 0) and gcd(INT64_MIN, INT64_MIN) are
602 : * all equal to abs(INT64_MIN), which cannot be represented as a 64-bit signed
603 : * integer.
604 : */
605 : static int64
606 264 : int8gcd_internal(int64 arg1, int64 arg2)
607 : {
608 : int64 swap;
609 : int64 a1,
610 : a2;
611 :
612 : /*
613 : * Put the greater absolute value in arg1.
614 : *
615 : * This would happen automatically in the loop below, but avoids an
616 : * expensive modulo operation, and simplifies the special-case handling
617 : * for INT64_MIN below.
618 : *
619 : * We do this in negative space in order to handle INT64_MIN.
620 : */
621 264 : a1 = (arg1 < 0) ? arg1 : -arg1;
622 264 : a2 = (arg2 < 0) ? arg2 : -arg2;
623 264 : if (a1 > a2)
624 : {
625 96 : swap = arg1;
626 96 : arg1 = arg2;
627 96 : arg2 = swap;
628 : }
629 :
630 : /* Special care needs to be taken with INT64_MIN. See comments above. */
631 264 : if (arg1 == PG_INT64_MIN)
632 : {
633 90 : if (arg2 == 0 || arg2 == PG_INT64_MIN)
634 12 : ereport(ERROR,
635 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
636 : errmsg("bigint out of range")));
637 :
638 : /*
639 : * Some machines throw a floating-point exception for INT64_MIN % -1,
640 : * which is a bit silly since the correct answer is perfectly
641 : * well-defined, namely zero. Guard against this and just return the
642 : * result, gcd(INT64_MIN, -1) = 1.
643 : */
644 78 : if (arg2 == -1)
645 12 : return 1;
646 : }
647 :
648 : /* Use the Euclidean algorithm to find the GCD */
649 1230 : while (arg2 != 0)
650 : {
651 990 : swap = arg2;
652 990 : arg2 = arg1 % arg2;
653 990 : arg1 = swap;
654 : }
655 :
656 : /*
657 : * Make sure the result is positive. (We know we don't have INT64_MIN
658 : * anymore).
659 : */
660 240 : if (arg1 < 0)
661 102 : arg1 = -arg1;
662 :
663 240 : return arg1;
664 : }
665 :
666 : Datum
667 180 : int8gcd(PG_FUNCTION_ARGS)
668 : {
669 180 : int64 arg1 = PG_GETARG_INT64(0);
670 180 : int64 arg2 = PG_GETARG_INT64(1);
671 : int64 result;
672 :
673 180 : result = int8gcd_internal(arg1, arg2);
674 :
675 168 : PG_RETURN_INT64(result);
676 : }
677 :
678 : /*
679 : * Least Common Multiple
680 : */
681 : Datum
682 156 : int8lcm(PG_FUNCTION_ARGS)
683 : {
684 156 : int64 arg1 = PG_GETARG_INT64(0);
685 156 : int64 arg2 = PG_GETARG_INT64(1);
686 : int64 gcd;
687 : int64 result;
688 :
689 : /*
690 : * Handle lcm(x, 0) = lcm(0, x) = 0 as a special case. This prevents a
691 : * division-by-zero error below when x is zero, and an overflow error from
692 : * the GCD computation when x = INT64_MIN.
693 : */
694 156 : if (arg1 == 0 || arg2 == 0)
695 72 : PG_RETURN_INT64(0);
696 :
697 : /* lcm(x, y) = abs(x / gcd(x, y) * y) */
698 84 : gcd = int8gcd_internal(arg1, arg2);
699 84 : arg1 = arg1 / gcd;
700 :
701 84 : if (unlikely(pg_mul_s64_overflow(arg1, arg2, &result)))
702 6 : ereport(ERROR,
703 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
704 : errmsg("bigint out of range")));
705 :
706 : /* If the result is INT64_MIN, it cannot be represented. */
707 78 : if (unlikely(result == PG_INT64_MIN))
708 6 : ereport(ERROR,
709 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
710 : errmsg("bigint out of range")));
711 :
712 72 : if (result < 0)
713 36 : result = -result;
714 :
715 72 : PG_RETURN_INT64(result);
716 : }
717 :
718 : Datum
719 18676036 : int8inc(PG_FUNCTION_ARGS)
720 : {
721 : /*
722 : * When int8 is pass-by-reference, we provide this special case to avoid
723 : * palloc overhead for COUNT(): when called as an aggregate, we know that
724 : * the argument is modifiable local storage, so just update it in-place.
725 : * (If int8 is pass-by-value, then of course this is useless as well as
726 : * incorrect, so just ifdef it out.)
727 : */
728 : #ifndef USE_FLOAT8_BYVAL /* controls int8 too */
729 : if (AggCheckCallContext(fcinfo, NULL))
730 : {
731 : int64 *arg = (int64 *) PG_GETARG_POINTER(0);
732 :
733 : if (unlikely(pg_add_s64_overflow(*arg, 1, arg)))
734 : ereport(ERROR,
735 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
736 : errmsg("bigint out of range")));
737 :
738 : PG_RETURN_POINTER(arg);
739 : }
740 : else
741 : #endif
742 : {
743 : /* Not called as an aggregate, so just do it the dumb way */
744 18676036 : int64 arg = PG_GETARG_INT64(0);
745 : int64 result;
746 :
747 18676036 : if (unlikely(pg_add_s64_overflow(arg, 1, &result)))
748 0 : ereport(ERROR,
749 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
750 : errmsg("bigint out of range")));
751 :
752 18676036 : PG_RETURN_INT64(result);
753 : }
754 : }
755 :
756 : Datum
757 24 : int8dec(PG_FUNCTION_ARGS)
758 : {
759 : /*
760 : * When int8 is pass-by-reference, we provide this special case to avoid
761 : * palloc overhead for COUNT(): when called as an aggregate, we know that
762 : * the argument is modifiable local storage, so just update it in-place.
763 : * (If int8 is pass-by-value, then of course this is useless as well as
764 : * incorrect, so just ifdef it out.)
765 : */
766 : #ifndef USE_FLOAT8_BYVAL /* controls int8 too */
767 : if (AggCheckCallContext(fcinfo, NULL))
768 : {
769 : int64 *arg = (int64 *) PG_GETARG_POINTER(0);
770 :
771 : if (unlikely(pg_sub_s64_overflow(*arg, 1, arg)))
772 : ereport(ERROR,
773 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
774 : errmsg("bigint out of range")));
775 : PG_RETURN_POINTER(arg);
776 : }
777 : else
778 : #endif
779 : {
780 : /* Not called as an aggregate, so just do it the dumb way */
781 24 : int64 arg = PG_GETARG_INT64(0);
782 : int64 result;
783 :
784 24 : if (unlikely(pg_sub_s64_overflow(arg, 1, &result)))
785 0 : ereport(ERROR,
786 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
787 : errmsg("bigint out of range")));
788 :
789 24 : PG_RETURN_INT64(result);
790 : }
791 : }
792 :
793 :
794 : /*
795 : * These functions are exactly like int8inc/int8dec but are used for
796 : * aggregates that count only non-null values. Since the functions are
797 : * declared strict, the null checks happen before we ever get here, and all we
798 : * need do is increment the state value. We could actually make these pg_proc
799 : * entries point right at int8inc/int8dec, but then the opr_sanity regression
800 : * test would complain about mismatched entries for a built-in function.
801 : */
802 :
803 : Datum
804 1202484 : int8inc_any(PG_FUNCTION_ARGS)
805 : {
806 1202484 : return int8inc(fcinfo);
807 : }
808 :
809 : Datum
810 240024 : int8inc_float8_float8(PG_FUNCTION_ARGS)
811 : {
812 240024 : return int8inc(fcinfo);
813 : }
814 :
815 : Datum
816 6 : int8dec_any(PG_FUNCTION_ARGS)
817 : {
818 6 : return int8dec(fcinfo);
819 : }
820 :
821 : /*
822 : * int8inc_support
823 : * prosupport function for int8inc() and int8inc_any()
824 : */
825 : Datum
826 584 : int8inc_support(PG_FUNCTION_ARGS)
827 : {
828 584 : Node *rawreq = (Node *) PG_GETARG_POINTER(0);
829 :
830 584 : if (IsA(rawreq, SupportRequestWFuncMonotonic))
831 : {
832 78 : SupportRequestWFuncMonotonic *req = (SupportRequestWFuncMonotonic *) rawreq;
833 78 : MonotonicFunction monotonic = MONOTONICFUNC_NONE;
834 78 : int frameOptions = req->window_clause->frameOptions;
835 :
836 : /* No ORDER BY clause then all rows are peers */
837 78 : if (req->window_clause->orderClause == NIL)
838 24 : monotonic = MONOTONICFUNC_BOTH;
839 : else
840 : {
841 : /*
842 : * Otherwise take into account the frame options. When the frame
843 : * bound is the start of the window then the resulting value can
844 : * never decrease, therefore is monotonically increasing
845 : */
846 54 : if (frameOptions & FRAMEOPTION_START_UNBOUNDED_PRECEDING)
847 42 : monotonic |= MONOTONICFUNC_INCREASING;
848 :
849 : /*
850 : * Likewise, if the frame bound is the end of the window then the
851 : * resulting value can never decrease.
852 : */
853 54 : if (frameOptions & FRAMEOPTION_END_UNBOUNDED_FOLLOWING)
854 12 : monotonic |= MONOTONICFUNC_DECREASING;
855 : }
856 :
857 78 : req->monotonic = monotonic;
858 78 : PG_RETURN_POINTER(req);
859 : }
860 :
861 506 : PG_RETURN_POINTER(NULL);
862 : }
863 :
864 :
865 : Datum
866 642 : int8larger(PG_FUNCTION_ARGS)
867 : {
868 642 : int64 arg1 = PG_GETARG_INT64(0);
869 642 : int64 arg2 = PG_GETARG_INT64(1);
870 : int64 result;
871 :
872 642 : result = ((arg1 > arg2) ? arg1 : arg2);
873 :
874 642 : PG_RETURN_INT64(result);
875 : }
876 :
877 : Datum
878 8730 : int8smaller(PG_FUNCTION_ARGS)
879 : {
880 8730 : int64 arg1 = PG_GETARG_INT64(0);
881 8730 : int64 arg2 = PG_GETARG_INT64(1);
882 : int64 result;
883 :
884 8730 : result = ((arg1 < arg2) ? arg1 : arg2);
885 :
886 8730 : PG_RETURN_INT64(result);
887 : }
888 :
889 : Datum
890 4842 : int84pl(PG_FUNCTION_ARGS)
891 : {
892 4842 : int64 arg1 = PG_GETARG_INT64(0);
893 4842 : int32 arg2 = PG_GETARG_INT32(1);
894 : int64 result;
895 :
896 4842 : if (unlikely(pg_add_s64_overflow(arg1, (int64) arg2, &result)))
897 6 : ereport(ERROR,
898 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
899 : errmsg("bigint out of range")));
900 4836 : PG_RETURN_INT64(result);
901 : }
902 :
903 : Datum
904 122 : int84mi(PG_FUNCTION_ARGS)
905 : {
906 122 : int64 arg1 = PG_GETARG_INT64(0);
907 122 : int32 arg2 = PG_GETARG_INT32(1);
908 : int64 result;
909 :
910 122 : if (unlikely(pg_sub_s64_overflow(arg1, (int64) arg2, &result)))
911 6 : ereport(ERROR,
912 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
913 : errmsg("bigint out of range")));
914 116 : PG_RETURN_INT64(result);
915 : }
916 :
917 : Datum
918 2186 : int84mul(PG_FUNCTION_ARGS)
919 : {
920 2186 : int64 arg1 = PG_GETARG_INT64(0);
921 2186 : int32 arg2 = PG_GETARG_INT32(1);
922 : int64 result;
923 :
924 2186 : if (unlikely(pg_mul_s64_overflow(arg1, (int64) arg2, &result)))
925 12 : ereport(ERROR,
926 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
927 : errmsg("bigint out of range")));
928 2174 : PG_RETURN_INT64(result);
929 : }
930 :
931 : Datum
932 184 : int84div(PG_FUNCTION_ARGS)
933 : {
934 184 : int64 arg1 = PG_GETARG_INT64(0);
935 184 : int32 arg2 = PG_GETARG_INT32(1);
936 : int64 result;
937 :
938 184 : if (arg2 == 0)
939 : {
940 6 : ereport(ERROR,
941 : (errcode(ERRCODE_DIVISION_BY_ZERO),
942 : errmsg("division by zero")));
943 : /* ensure compiler realizes we mustn't reach the division (gcc bug) */
944 : PG_RETURN_NULL();
945 : }
946 :
947 : /*
948 : * INT64_MIN / -1 is problematic, since the result can't be represented on
949 : * a two's-complement machine. Some machines produce INT64_MIN, some
950 : * produce zero, some throw an exception. We can dodge the problem by
951 : * recognizing that division by -1 is the same as negation.
952 : */
953 178 : if (arg2 == -1)
954 : {
955 6 : if (unlikely(arg1 == PG_INT64_MIN))
956 6 : ereport(ERROR,
957 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
958 : errmsg("bigint out of range")));
959 0 : result = -arg1;
960 0 : PG_RETURN_INT64(result);
961 : }
962 :
963 : /* No overflow is possible */
964 :
965 172 : result = arg1 / arg2;
966 :
967 172 : PG_RETURN_INT64(result);
968 : }
969 :
970 : Datum
971 1226 : int48pl(PG_FUNCTION_ARGS)
972 : {
973 1226 : int32 arg1 = PG_GETARG_INT32(0);
974 1226 : int64 arg2 = PG_GETARG_INT64(1);
975 : int64 result;
976 :
977 1226 : if (unlikely(pg_add_s64_overflow((int64) arg1, arg2, &result)))
978 6 : ereport(ERROR,
979 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
980 : errmsg("bigint out of range")));
981 1220 : PG_RETURN_INT64(result);
982 : }
983 :
984 : Datum
985 66 : int48mi(PG_FUNCTION_ARGS)
986 : {
987 66 : int32 arg1 = PG_GETARG_INT32(0);
988 66 : int64 arg2 = PG_GETARG_INT64(1);
989 : int64 result;
990 :
991 66 : if (unlikely(pg_sub_s64_overflow((int64) arg1, arg2, &result)))
992 6 : ereport(ERROR,
993 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
994 : errmsg("bigint out of range")));
995 60 : PG_RETURN_INT64(result);
996 : }
997 :
998 : Datum
999 222 : int48mul(PG_FUNCTION_ARGS)
1000 : {
1001 222 : int32 arg1 = PG_GETARG_INT32(0);
1002 222 : int64 arg2 = PG_GETARG_INT64(1);
1003 : int64 result;
1004 :
1005 222 : if (unlikely(pg_mul_s64_overflow((int64) arg1, arg2, &result)))
1006 6 : ereport(ERROR,
1007 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
1008 : errmsg("bigint out of range")));
1009 216 : PG_RETURN_INT64(result);
1010 : }
1011 :
1012 : Datum
1013 36 : int48div(PG_FUNCTION_ARGS)
1014 : {
1015 36 : int32 arg1 = PG_GETARG_INT32(0);
1016 36 : int64 arg2 = PG_GETARG_INT64(1);
1017 :
1018 36 : if (unlikely(arg2 == 0))
1019 : {
1020 6 : ereport(ERROR,
1021 : (errcode(ERRCODE_DIVISION_BY_ZERO),
1022 : errmsg("division by zero")));
1023 : /* ensure compiler realizes we mustn't reach the division (gcc bug) */
1024 : PG_RETURN_NULL();
1025 : }
1026 :
1027 : /* No overflow is possible */
1028 30 : PG_RETURN_INT64((int64) arg1 / arg2);
1029 : }
1030 :
1031 : Datum
1032 36 : int82pl(PG_FUNCTION_ARGS)
1033 : {
1034 36 : int64 arg1 = PG_GETARG_INT64(0);
1035 36 : int16 arg2 = PG_GETARG_INT16(1);
1036 : int64 result;
1037 :
1038 36 : if (unlikely(pg_add_s64_overflow(arg1, (int64) arg2, &result)))
1039 6 : ereport(ERROR,
1040 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
1041 : errmsg("bigint out of range")));
1042 30 : PG_RETURN_INT64(result);
1043 : }
1044 :
1045 : Datum
1046 36 : int82mi(PG_FUNCTION_ARGS)
1047 : {
1048 36 : int64 arg1 = PG_GETARG_INT64(0);
1049 36 : int16 arg2 = PG_GETARG_INT16(1);
1050 : int64 result;
1051 :
1052 36 : if (unlikely(pg_sub_s64_overflow(arg1, (int64) arg2, &result)))
1053 6 : ereport(ERROR,
1054 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
1055 : errmsg("bigint out of range")));
1056 30 : PG_RETURN_INT64(result);
1057 : }
1058 :
1059 : Datum
1060 42 : int82mul(PG_FUNCTION_ARGS)
1061 : {
1062 42 : int64 arg1 = PG_GETARG_INT64(0);
1063 42 : int16 arg2 = PG_GETARG_INT16(1);
1064 : int64 result;
1065 :
1066 42 : if (unlikely(pg_mul_s64_overflow(arg1, (int64) arg2, &result)))
1067 12 : ereport(ERROR,
1068 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
1069 : errmsg("bigint out of range")));
1070 30 : PG_RETURN_INT64(result);
1071 : }
1072 :
1073 : Datum
1074 42 : int82div(PG_FUNCTION_ARGS)
1075 : {
1076 42 : int64 arg1 = PG_GETARG_INT64(0);
1077 42 : int16 arg2 = PG_GETARG_INT16(1);
1078 : int64 result;
1079 :
1080 42 : if (unlikely(arg2 == 0))
1081 : {
1082 6 : ereport(ERROR,
1083 : (errcode(ERRCODE_DIVISION_BY_ZERO),
1084 : errmsg("division by zero")));
1085 : /* ensure compiler realizes we mustn't reach the division (gcc bug) */
1086 : PG_RETURN_NULL();
1087 : }
1088 :
1089 : /*
1090 : * INT64_MIN / -1 is problematic, since the result can't be represented on
1091 : * a two's-complement machine. Some machines produce INT64_MIN, some
1092 : * produce zero, some throw an exception. We can dodge the problem by
1093 : * recognizing that division by -1 is the same as negation.
1094 : */
1095 36 : if (arg2 == -1)
1096 : {
1097 6 : if (unlikely(arg1 == PG_INT64_MIN))
1098 6 : ereport(ERROR,
1099 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
1100 : errmsg("bigint out of range")));
1101 0 : result = -arg1;
1102 0 : PG_RETURN_INT64(result);
1103 : }
1104 :
1105 : /* No overflow is possible */
1106 :
1107 30 : result = arg1 / arg2;
1108 :
1109 30 : PG_RETURN_INT64(result);
1110 : }
1111 :
1112 : Datum
1113 36 : int28pl(PG_FUNCTION_ARGS)
1114 : {
1115 36 : int16 arg1 = PG_GETARG_INT16(0);
1116 36 : int64 arg2 = PG_GETARG_INT64(1);
1117 : int64 result;
1118 :
1119 36 : if (unlikely(pg_add_s64_overflow((int64) arg1, arg2, &result)))
1120 6 : ereport(ERROR,
1121 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
1122 : errmsg("bigint out of range")));
1123 30 : PG_RETURN_INT64(result);
1124 : }
1125 :
1126 : Datum
1127 36 : int28mi(PG_FUNCTION_ARGS)
1128 : {
1129 36 : int16 arg1 = PG_GETARG_INT16(0);
1130 36 : int64 arg2 = PG_GETARG_INT64(1);
1131 : int64 result;
1132 :
1133 36 : if (unlikely(pg_sub_s64_overflow((int64) arg1, arg2, &result)))
1134 6 : ereport(ERROR,
1135 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
1136 : errmsg("bigint out of range")));
1137 30 : PG_RETURN_INT64(result);
1138 : }
1139 :
1140 : Datum
1141 36 : int28mul(PG_FUNCTION_ARGS)
1142 : {
1143 36 : int16 arg1 = PG_GETARG_INT16(0);
1144 36 : int64 arg2 = PG_GETARG_INT64(1);
1145 : int64 result;
1146 :
1147 36 : if (unlikely(pg_mul_s64_overflow((int64) arg1, arg2, &result)))
1148 6 : ereport(ERROR,
1149 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
1150 : errmsg("bigint out of range")));
1151 30 : PG_RETURN_INT64(result);
1152 : }
1153 :
1154 : Datum
1155 36 : int28div(PG_FUNCTION_ARGS)
1156 : {
1157 36 : int16 arg1 = PG_GETARG_INT16(0);
1158 36 : int64 arg2 = PG_GETARG_INT64(1);
1159 :
1160 36 : if (unlikely(arg2 == 0))
1161 : {
1162 6 : ereport(ERROR,
1163 : (errcode(ERRCODE_DIVISION_BY_ZERO),
1164 : errmsg("division by zero")));
1165 : /* ensure compiler realizes we mustn't reach the division (gcc bug) */
1166 : PG_RETURN_NULL();
1167 : }
1168 :
1169 : /* No overflow is possible */
1170 30 : PG_RETURN_INT64((int64) arg1 / arg2);
1171 : }
1172 :
1173 : /* Binary arithmetics
1174 : *
1175 : * int8and - returns arg1 & arg2
1176 : * int8or - returns arg1 | arg2
1177 : * int8xor - returns arg1 # arg2
1178 : * int8not - returns ~arg1
1179 : * int8shl - returns arg1 << arg2
1180 : * int8shr - returns arg1 >> arg2
1181 : */
1182 :
1183 : Datum
1184 42 : int8and(PG_FUNCTION_ARGS)
1185 : {
1186 42 : int64 arg1 = PG_GETARG_INT64(0);
1187 42 : int64 arg2 = PG_GETARG_INT64(1);
1188 :
1189 42 : PG_RETURN_INT64(arg1 & arg2);
1190 : }
1191 :
1192 : Datum
1193 46 : int8or(PG_FUNCTION_ARGS)
1194 : {
1195 46 : int64 arg1 = PG_GETARG_INT64(0);
1196 46 : int64 arg2 = PG_GETARG_INT64(1);
1197 :
1198 46 : PG_RETURN_INT64(arg1 | arg2);
1199 : }
1200 :
1201 : Datum
1202 42 : int8xor(PG_FUNCTION_ARGS)
1203 : {
1204 42 : int64 arg1 = PG_GETARG_INT64(0);
1205 42 : int64 arg2 = PG_GETARG_INT64(1);
1206 :
1207 42 : PG_RETURN_INT64(arg1 ^ arg2);
1208 : }
1209 :
1210 : Datum
1211 30 : int8not(PG_FUNCTION_ARGS)
1212 : {
1213 30 : int64 arg1 = PG_GETARG_INT64(0);
1214 :
1215 30 : PG_RETURN_INT64(~arg1);
1216 : }
1217 :
1218 : Datum
1219 46 : int8shl(PG_FUNCTION_ARGS)
1220 : {
1221 46 : int64 arg1 = PG_GETARG_INT64(0);
1222 46 : int32 arg2 = PG_GETARG_INT32(1);
1223 :
1224 46 : PG_RETURN_INT64(arg1 << arg2);
1225 : }
1226 :
1227 : Datum
1228 30 : int8shr(PG_FUNCTION_ARGS)
1229 : {
1230 30 : int64 arg1 = PG_GETARG_INT64(0);
1231 30 : int32 arg2 = PG_GETARG_INT32(1);
1232 :
1233 30 : PG_RETURN_INT64(arg1 >> arg2);
1234 : }
1235 :
1236 : /*----------------------------------------------------------
1237 : * Conversion operators.
1238 : *---------------------------------------------------------*/
1239 :
1240 : Datum
1241 2563300 : int48(PG_FUNCTION_ARGS)
1242 : {
1243 2563300 : int32 arg = PG_GETARG_INT32(0);
1244 :
1245 2563300 : PG_RETURN_INT64((int64) arg);
1246 : }
1247 :
1248 : Datum
1249 456504 : int84(PG_FUNCTION_ARGS)
1250 : {
1251 456504 : int64 arg = PG_GETARG_INT64(0);
1252 :
1253 456504 : if (unlikely(arg < PG_INT32_MIN) || unlikely(arg > PG_INT32_MAX))
1254 6 : ereport(ERROR,
1255 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
1256 : errmsg("integer out of range")));
1257 :
1258 456498 : PG_RETURN_INT32((int32) arg);
1259 : }
1260 :
1261 : Datum
1262 18 : int28(PG_FUNCTION_ARGS)
1263 : {
1264 18 : int16 arg = PG_GETARG_INT16(0);
1265 :
1266 18 : PG_RETURN_INT64((int64) arg);
1267 : }
1268 :
1269 : Datum
1270 36 : int82(PG_FUNCTION_ARGS)
1271 : {
1272 36 : int64 arg = PG_GETARG_INT64(0);
1273 :
1274 36 : if (unlikely(arg < PG_INT16_MIN) || unlikely(arg > PG_INT16_MAX))
1275 6 : ereport(ERROR,
1276 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
1277 : errmsg("smallint out of range")));
1278 :
1279 30 : PG_RETURN_INT16((int16) arg);
1280 : }
1281 :
1282 : Datum
1283 12198 : i8tod(PG_FUNCTION_ARGS)
1284 : {
1285 12198 : int64 arg = PG_GETARG_INT64(0);
1286 : float8 result;
1287 :
1288 12198 : result = arg;
1289 :
1290 12198 : PG_RETURN_FLOAT8(result);
1291 : }
1292 :
1293 : /* dtoi8()
1294 : * Convert float8 to 8-byte integer.
1295 : */
1296 : Datum
1297 144 : dtoi8(PG_FUNCTION_ARGS)
1298 : {
1299 144 : float8 num = PG_GETARG_FLOAT8(0);
1300 :
1301 : /*
1302 : * Get rid of any fractional part in the input. This is so we don't fail
1303 : * on just-out-of-range values that would round into range. Note
1304 : * assumption that rint() will pass through a NaN or Inf unchanged.
1305 : */
1306 144 : num = rint(num);
1307 :
1308 : /* Range check */
1309 144 : if (unlikely(isnan(num) || !FLOAT8_FITS_IN_INT64(num)))
1310 18 : ereport(ERROR,
1311 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
1312 : errmsg("bigint out of range")));
1313 :
1314 126 : PG_RETURN_INT64((int64) num);
1315 : }
1316 :
1317 : Datum
1318 150 : i8tof(PG_FUNCTION_ARGS)
1319 : {
1320 150 : int64 arg = PG_GETARG_INT64(0);
1321 : float4 result;
1322 :
1323 150 : result = arg;
1324 :
1325 150 : PG_RETURN_FLOAT4(result);
1326 : }
1327 :
1328 : /* ftoi8()
1329 : * Convert float4 to 8-byte integer.
1330 : */
1331 : Datum
1332 30 : ftoi8(PG_FUNCTION_ARGS)
1333 : {
1334 30 : float4 num = PG_GETARG_FLOAT4(0);
1335 :
1336 : /*
1337 : * Get rid of any fractional part in the input. This is so we don't fail
1338 : * on just-out-of-range values that would round into range. Note
1339 : * assumption that rint() will pass through a NaN or Inf unchanged.
1340 : */
1341 30 : num = rint(num);
1342 :
1343 : /* Range check */
1344 30 : if (unlikely(isnan(num) || !FLOAT4_FITS_IN_INT64(num)))
1345 12 : ereport(ERROR,
1346 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
1347 : errmsg("bigint out of range")));
1348 :
1349 18 : PG_RETURN_INT64((int64) num);
1350 : }
1351 :
1352 : Datum
1353 20 : i8tooid(PG_FUNCTION_ARGS)
1354 : {
1355 20 : int64 arg = PG_GETARG_INT64(0);
1356 :
1357 20 : if (unlikely(arg < 0) || unlikely(arg > PG_UINT32_MAX))
1358 6 : ereport(ERROR,
1359 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
1360 : errmsg("OID out of range")));
1361 :
1362 14 : PG_RETURN_OID((Oid) arg);
1363 : }
1364 :
1365 : Datum
1366 22 : oidtoi8(PG_FUNCTION_ARGS)
1367 : {
1368 22 : Oid arg = PG_GETARG_OID(0);
1369 :
1370 22 : PG_RETURN_INT64((int64) arg);
1371 : }
1372 :
1373 : /*
1374 : * non-persistent numeric series generator
1375 : */
1376 : Datum
1377 2953038 : generate_series_int8(PG_FUNCTION_ARGS)
1378 : {
1379 2953038 : return generate_series_step_int8(fcinfo);
1380 : }
1381 :
1382 : Datum
1383 2953184 : generate_series_step_int8(PG_FUNCTION_ARGS)
1384 : {
1385 : FuncCallContext *funcctx;
1386 : generate_series_fctx *fctx;
1387 : int64 result;
1388 : MemoryContext oldcontext;
1389 :
1390 : /* stuff done only on the first call of the function */
1391 2953184 : if (SRF_IS_FIRSTCALL())
1392 : {
1393 60 : int64 start = PG_GETARG_INT64(0);
1394 60 : int64 finish = PG_GETARG_INT64(1);
1395 60 : int64 step = 1;
1396 :
1397 : /* see if we were given an explicit step size */
1398 60 : if (PG_NARGS() == 3)
1399 14 : step = PG_GETARG_INT64(2);
1400 60 : if (step == 0)
1401 6 : ereport(ERROR,
1402 : (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
1403 : errmsg("step size cannot equal zero")));
1404 :
1405 : /* create a function context for cross-call persistence */
1406 54 : funcctx = SRF_FIRSTCALL_INIT();
1407 :
1408 : /*
1409 : * switch to memory context appropriate for multiple function calls
1410 : */
1411 54 : oldcontext = MemoryContextSwitchTo(funcctx->multi_call_memory_ctx);
1412 :
1413 : /* allocate memory for user context */
1414 54 : fctx = (generate_series_fctx *) palloc(sizeof(generate_series_fctx));
1415 :
1416 : /*
1417 : * Use fctx to keep state from call to call. Seed current with the
1418 : * original start value
1419 : */
1420 54 : fctx->current = start;
1421 54 : fctx->finish = finish;
1422 54 : fctx->step = step;
1423 :
1424 54 : funcctx->user_fctx = fctx;
1425 54 : MemoryContextSwitchTo(oldcontext);
1426 : }
1427 :
1428 : /* stuff done on every call of the function */
1429 2953178 : funcctx = SRF_PERCALL_SETUP();
1430 :
1431 : /*
1432 : * get the saved state and use current as the result for this iteration
1433 : */
1434 2953178 : fctx = funcctx->user_fctx;
1435 2953178 : result = fctx->current;
1436 :
1437 2953178 : if ((fctx->step > 0 && fctx->current <= fctx->finish) ||
1438 52 : (fctx->step < 0 && fctx->current >= fctx->finish))
1439 : {
1440 : /*
1441 : * Increment current in preparation for next iteration. If next-value
1442 : * computation overflows, this is the final result.
1443 : */
1444 2953126 : if (pg_add_s64_overflow(fctx->current, fctx->step, &fctx->current))
1445 0 : fctx->step = 0;
1446 :
1447 : /* do when there is more left to send */
1448 2953126 : SRF_RETURN_NEXT(funcctx, Int64GetDatum(result));
1449 : }
1450 : else
1451 : /* do when there is no more left */
1452 52 : SRF_RETURN_DONE(funcctx);
1453 : }
1454 :
1455 : /*
1456 : * Planner support function for generate_series(int8, int8 [, int8])
1457 : */
1458 : Datum
1459 150 : generate_series_int8_support(PG_FUNCTION_ARGS)
1460 : {
1461 150 : Node *rawreq = (Node *) PG_GETARG_POINTER(0);
1462 150 : Node *ret = NULL;
1463 :
1464 150 : if (IsA(rawreq, SupportRequestRows))
1465 : {
1466 : /* Try to estimate the number of rows returned */
1467 48 : SupportRequestRows *req = (SupportRequestRows *) rawreq;
1468 :
1469 48 : if (is_funcclause(req->node)) /* be paranoid */
1470 : {
1471 48 : List *args = ((FuncExpr *) req->node)->args;
1472 : Node *arg1,
1473 : *arg2,
1474 : *arg3;
1475 :
1476 : /* We can use estimated argument values here */
1477 48 : arg1 = estimate_expression_value(req->root, linitial(args));
1478 48 : arg2 = estimate_expression_value(req->root, lsecond(args));
1479 48 : if (list_length(args) >= 3)
1480 14 : arg3 = estimate_expression_value(req->root, lthird(args));
1481 : else
1482 34 : arg3 = NULL;
1483 :
1484 : /*
1485 : * If any argument is constant NULL, we can safely assume that
1486 : * zero rows are returned. Otherwise, if they're all non-NULL
1487 : * constants, we can calculate the number of rows that will be
1488 : * returned. Use double arithmetic to avoid overflow hazards.
1489 : */
1490 48 : if ((IsA(arg1, Const) &&
1491 40 : ((Const *) arg1)->constisnull) ||
1492 48 : (IsA(arg2, Const) &&
1493 48 : ((Const *) arg2)->constisnull) ||
1494 14 : (arg3 != NULL && IsA(arg3, Const) &&
1495 14 : ((Const *) arg3)->constisnull))
1496 : {
1497 0 : req->rows = 0;
1498 0 : ret = (Node *) req;
1499 : }
1500 48 : else if (IsA(arg1, Const) &&
1501 40 : IsA(arg2, Const) &&
1502 14 : (arg3 == NULL || IsA(arg3, Const)))
1503 : {
1504 : double start,
1505 : finish,
1506 : step;
1507 :
1508 34 : start = DatumGetInt64(((Const *) arg1)->constvalue);
1509 34 : finish = DatumGetInt64(((Const *) arg2)->constvalue);
1510 34 : step = arg3 ? DatumGetInt64(((Const *) arg3)->constvalue) : 1;
1511 :
1512 : /* This equation works for either sign of step */
1513 34 : if (step != 0)
1514 : {
1515 28 : req->rows = floor((finish - start + step) / step);
1516 28 : ret = (Node *) req;
1517 : }
1518 : }
1519 : }
1520 : }
1521 :
1522 150 : PG_RETURN_POINTER(ret);
1523 : }
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