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cairo-wideint.c
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1/* cairo - a vector graphics library with display and print output
2 *
3 * Copyright © 2004 Keith Packard
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation;
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 *
18 * The original code as contributed to the cairo library under
19 * the dual license MPL+LGPL. We used the LGPL relicensing clause to
20 * get a GPL version of this code which now lives here. This header is
21 * unmodified other than the licensing clause.
22 *
23 * The Original Code is the cairo graphics library.
24 *
25 * The Initial Developer of the Original Code is Keith Packard
26 *
27 * Contributor(s):
28 * Keith R. Packard <keithp@keithp.com>
29 *
30 * Code changes for ns-3 from upstream are marked with `//PDB'
31 */
32
33// NOLINTBEGIN
34// clang-format off
35
37
38#include <climits>
39
46#if HAVE_UINT64_T
47
48const char * cairo_impl64 = "uint64_t";
49
50#define _cairo_uint32s_to_uint64(h,l) ((uint64_t) (h) << 32 | (l))
51
53_cairo_uint64_divrem (cairo_uint64_t num, cairo_uint64_t den)
54{
56
57 qr.quo = num / den;
58 qr.rem = num % den;
59 return qr;
60}
61
62#else
63
64const char * cairo_impl64 = "uint32_t";
65
66cairo_uint64_t
68{
69 cairo_uint64_t q;
70
71 q.lo = i;
72 q.hi = 0;
73 return q;
74}
75
78{
79 cairo_uint64_t q;
80
81 q.lo = i;
82 q.hi = i < 0 ? -1 : 0;
83 return q;
84}
85
86static cairo_uint64_t
88{
89 cairo_uint64_t q;
90
91 q.lo = l;
92 q.hi = h;
93 return q;
94}
95
96cairo_uint64_t
97_cairo_uint64_add (cairo_uint64_t a, cairo_uint64_t b)
98{
99 cairo_uint64_t s;
100
101 s.hi = a.hi + b.hi;
102 s.lo = a.lo + b.lo;
103 if (s.lo < a.lo)
104 s.hi++;
105 return s;
106}
107
108cairo_uint64_t
109_cairo_uint64_sub (cairo_uint64_t a, cairo_uint64_t b)
110{
111 cairo_uint64_t s;
112
113 s.hi = a.hi - b.hi;
114 s.lo = a.lo - b.lo;
115 if (s.lo > a.lo)
116 s.hi--;
117 return s;
118}
119
120#define uint32_lo(i) ((i) & 0xffff)
121#define uint32_hi(i) ((i) >> 16)
122#define uint32_carry16 ((1) << 16)
123
124cairo_uint64_t
126{
127 cairo_uint64_t s;
128
129 uint16_t ah, al, bh, bl;
130 uint32_t r0, r1, r2, r3;
131
132 al = uint32_lo (a);
133 ah = uint32_hi (a);
134 bl = uint32_lo (b);
135 bh = uint32_hi (b);
136
137 r0 = (uint32_t) al * bl;
138 r1 = (uint32_t) al * bh;
139 r2 = (uint32_t) ah * bl;
140 r3 = (uint32_t) ah * bh;
141
142 r1 += uint32_hi(r0); /* no carry possible */
143 r1 += r2; /* but this can carry */
144 if (r1 < r2) /* check */
145 r3 += uint32_carry16;
146
147 s.hi = r3 + uint32_hi(r1);
148 s.lo = (uint32_lo (r1) << 16) + uint32_lo (r0);
149 return s;
150}
151
154{
157 if (a < 0)
158 s.hi -= b;
159 if (b < 0)
160 s.hi -= a;
161 return s;
162}
163
164cairo_uint64_t
165_cairo_uint64_mul (cairo_uint64_t a, cairo_uint64_t b)
166{
167 cairo_uint64_t s;
168
169 s = _cairo_uint32x32_64_mul (a.lo, b.lo);
170 s.hi += a.lo * b.hi + a.hi * b.lo;
171 return s;
172}
173
174cairo_uint64_t
175_cairo_uint64_lsl (cairo_uint64_t a, int shift)
176{
177 if (shift >= 32)
178 {
179 a.hi = a.lo;
180 a.lo = 0;
181 shift -= 32;
182 }
183 if (shift)
184 {
185 a.hi = a.hi << shift | a.lo >> (32 - shift);
186 a.lo = a.lo << shift;
187 }
188 return a;
189}
190
191cairo_uint64_t
192_cairo_uint64_rsl (cairo_uint64_t a, int shift)
193{
194 if (shift >= 32)
195 {
196 a.lo = a.hi;
197 a.hi = 0;
198 shift -= 32;
199 }
200 if (shift)
201 {
202 a.lo = a.lo >> shift | a.hi << (32 - shift);
203 a.hi = a.hi >> shift;
204 }
205 return a;
206}
207
208#define _cairo_uint32_rsa(a,n) ((uint32_t) (((int32_t) (a)) >> (n)))
209
212{
213 if (shift >= 32)
214 {
215 a.lo = a.hi;
216 a.hi = _cairo_uint32_rsa (a.hi, 31);
217 shift -= 32;
218 }
219 if (shift)
220 {
221 a.lo = a.lo >> shift | a.hi << (32 - shift);
222 a.hi = _cairo_uint32_rsa (a.hi, shift);
223 }
224 return a;
225}
226
227int
228_cairo_uint64_lt (cairo_uint64_t a, cairo_uint64_t b)
229{
230 return (a.hi < b.hi ||
231 (a.hi == b.hi && a.lo < b.lo));
232}
233
234int
235_cairo_uint64_eq (cairo_uint64_t a, cairo_uint64_t b)
236{
237 return a.hi == b.hi && a.lo == b.lo;
238}
239
240int
242{
244 return 1;
246 return 0;
247 return _cairo_uint64_lt (a, b);
248}
249
250cairo_uint64_t
251_cairo_uint64_not (cairo_uint64_t a)
252{
253 a.lo = ~a.lo;
254 a.hi = ~a.hi;
255 return a;
256}
257
258cairo_uint64_t
259_cairo_uint64_negate (cairo_uint64_t a)
260{
261 a.lo = ~a.lo;
262 a.hi = ~a.hi;
263 if (++a.lo == 0)
264 ++a.hi;
265 return a;
266}
267
268/*
269 * Simple bit-at-a-time divide.
270 */
272_cairo_uint64_divrem (cairo_uint64_t num, cairo_uint64_t den)
273{
275 cairo_uint64_t bit;
276 cairo_uint64_t quo;
277
278 bit = _cairo_uint32_to_uint64 (1);
279
280 /* normalize to make den >= num, but not overflow */
281 while (_cairo_uint64_lt (den, num) && (den.hi & 0x80000000) == 0)
282 {
283 bit = _cairo_uint64_lsl (bit, 1);
284 den = _cairo_uint64_lsl (den, 1);
285 }
286 quo = _cairo_uint32_to_uint64 (0);
287
288 /* generate quotient, one bit at a time */
289 while (bit.hi | bit.lo)
290 {
291 if (_cairo_uint64_le (den, num))
292 {
293 num = _cairo_uint64_sub (num, den);
294 quo = _cairo_uint64_add (quo, bit);
295 }
296 bit = _cairo_uint64_rsl (bit, 1);
297 den = _cairo_uint64_rsl (den, 1);
298 }
299 qr.quo = quo;
300 qr.rem = num;
301 return qr;
302}
303
304#endif /* !HAVE_UINT64_T */
305
308{
309 int num_neg = _cairo_int64_negative (num);
310 int den_neg = _cairo_int64_negative (den);
313
314 if (num_neg)
315 num = _cairo_int64_negate (num);
316 if (den_neg)
317 den = _cairo_int64_negate (den);
318 uqr = _cairo_uint64_divrem (num, den);
319 if (num_neg)
320 qr.rem = _cairo_int64_negate ((cairo_int64_t)uqr.rem); //PDB cast
321 else
322 qr.rem = uqr.rem;
323 if (num_neg != den_neg)
324 qr.quo = (cairo_int64_t) _cairo_int64_negate ((cairo_int64_t)uqr.quo); //PDB cast
325 else
326 qr.quo = (cairo_int64_t) uqr.quo;
327 return qr;
328}
329
330#if HAVE_UINT128_T
331
332const char * cairo_impl128 = "uint128_t";
333
335_cairo_uint128_divrem (cairo_uint128_t num, cairo_uint128_t den)
336{
338
339 qr.quo = num / den;
340 qr.rem = num % den;
341 return qr;
342}
343
344#else
345
346const char * cairo_impl128 = "cairo_uint64_t";
347
348cairo_uint128_t
350{
351 cairo_uint128_t q;
352
353 q.lo = _cairo_uint32_to_uint64 (i);
354 q.hi = _cairo_uint32_to_uint64 (0);
355 return q;
356}
357
360{
362
364 q.hi = _cairo_int32_to_int64 (i < 0 ? -1 : 0);
365 return q;
366}
367
368cairo_uint128_t
369_cairo_uint64_to_uint128 (cairo_uint64_t i)
370{
371 cairo_uint128_t q;
372
373 q.lo = i;
374 q.hi = _cairo_uint32_to_uint64 (0);
375 return q;
376}
377
380{
382
383 q.lo = i;
385 return q;
386}
387
388cairo_uint128_t
389_cairo_uint128_add (cairo_uint128_t a, cairo_uint128_t b)
390{
391 cairo_uint128_t s;
392
393 s.hi = _cairo_uint64_add (a.hi, b.hi);
394 s.lo = _cairo_uint64_add (a.lo, b.lo);
395 if (_cairo_uint64_lt (s.lo, a.lo))
397 return s;
398}
399
400cairo_uint128_t
401_cairo_uint128_sub (cairo_uint128_t a, cairo_uint128_t b)
402{
403 cairo_uint128_t s;
404
405 s.hi = _cairo_uint64_sub (a.hi, b.hi);
406 s.lo = _cairo_uint64_sub (a.lo, b.lo);
407 if (_cairo_uint64_gt (s.lo, a.lo))
409 return s;
410}
411
412#if HAVE_UINT64_T
413
414#define uint64_lo32(i) ((i) & 0xffffffff)
415#define uint64_hi32(i) ((i) >> 32)
416#define uint64_lo(i) ((i) & 0xffffffff)
417#define uint64_hi(i) ((i) >> 32)
418#define uint64_shift32(i) ((i) << 32)
419#define uint64_carry32 (((uint64_t) 1) << 32)
420
421#else
422
423#define uint64_lo32(i) ((i).lo)
424#define uint64_hi32(i) ((i).hi)
425
426static cairo_uint64_t
427uint64_lo (cairo_uint64_t i)
428{
429 cairo_uint64_t s;
430
431 s.lo = i.lo;
432 s.hi = 0;
433 return s;
434}
435
436static cairo_uint64_t
437uint64_hi (cairo_uint64_t i)
438{
439 cairo_uint64_t s;
440
441 s.lo = i.hi;
442 s.hi = 0;
443 return s;
444}
445
446static cairo_uint64_t
447uint64_shift32 (cairo_uint64_t i)
448{
449 cairo_uint64_t s;
450
451 s.lo = 0;
452 s.hi = i.lo;
453 return s;
454}
455
456static const cairo_uint64_t uint64_carry32 = { 0, 1 };
457
458#endif
459
460cairo_uint128_t
461_cairo_uint64x64_128_mul (cairo_uint64_t a, cairo_uint64_t b)
462{
463 cairo_uint128_t s;
464 uint32_t ah, al, bh, bl;
465 cairo_uint64_t r0, r1, r2, r3;
466
467 al = uint64_lo32 (a);
468 ah = uint64_hi32 (a);
469 bl = uint64_lo32 (b);
470 bh = uint64_hi32 (b);
471
472 r0 = _cairo_uint32x32_64_mul (al, bl);
473 r1 = _cairo_uint32x32_64_mul (al, bh);
474 r2 = _cairo_uint32x32_64_mul (ah, bl);
475 r3 = _cairo_uint32x32_64_mul (ah, bh);
476
477 r1 = _cairo_uint64_add (r1, uint64_hi (r0)); /* no carry possible */
478 r1 = _cairo_uint64_add (r1, r2); /* but this can carry */
479 if (_cairo_uint64_lt (r1, r2)) /* check */
481
482 s.hi = _cairo_uint64_add (r3, uint64_hi(r1));
484 uint64_lo (r0));
485 return s;
486}
487
490{
494 if (_cairo_int64_negative (a))
495 s.hi = _cairo_uint64_sub (s.hi,
497 if (_cairo_int64_negative (b))
498 s.hi = _cairo_uint64_sub (s.hi,
500 return s;
501}
502
503cairo_uint128_t
504_cairo_uint128_mul (cairo_uint128_t a, cairo_uint128_t b)
505{
506 cairo_uint128_t s;
507
508 s = _cairo_uint64x64_128_mul (a.lo, b.lo);
509 s.hi = _cairo_uint64_add (s.hi,
510 _cairo_uint64_mul (a.lo, b.hi));
511 s.hi = _cairo_uint64_add (s.hi,
512 _cairo_uint64_mul (a.hi, b.lo));
513 return s;
514}
515
516cairo_uint128_t
517_cairo_uint128_lsl (cairo_uint128_t a, int shift)
518{
519 if (shift >= 64)
520 {
521 a.hi = a.lo;
522 a.lo = _cairo_uint32_to_uint64 (0);
523 shift -= 64;
524 }
525 if (shift)
526 {
527 a.hi = _cairo_uint64_add (_cairo_uint64_lsl (a.hi, shift),
528 _cairo_uint64_rsl (a.lo, (64 - shift)));
529 a.lo = _cairo_uint64_lsl (a.lo, shift);
530 }
531 return a;
532}
533
534cairo_uint128_t
535_cairo_uint128_rsl (cairo_uint128_t a, int shift)
536{
537 if (shift >= 64)
538 {
539 a.lo = a.hi;
540 a.hi = _cairo_uint32_to_uint64 (0);
541 shift -= 64;
542 }
543 if (shift)
544 {
545 a.lo = _cairo_uint64_add (_cairo_uint64_rsl (a.lo, shift),
546 _cairo_uint64_lsl (a.hi, (64 - shift)));
547 a.hi = _cairo_uint64_rsl (a.hi, shift);
548 }
549 return a;
550}
551
552cairo_uint128_t
554{
555 if (shift >= 64)
556 {
557 a.lo = a.hi;
558 a.hi = _cairo_uint64_rsa (a.hi, 64-1);
559 shift -= 64;
560 }
561 if (shift)
562 {
564 _cairo_uint64_lsl (a.hi, (64 - shift)));
565 a.hi = _cairo_uint64_rsa (a.hi, shift);
566 }
567 return a;
568}
569
570int
571_cairo_uint128_lt (cairo_uint128_t a, cairo_uint128_t b)
572{
573 return (_cairo_uint64_lt (a.hi, b.hi) ||
574 (_cairo_uint64_eq (a.hi, b.hi) &&
575 _cairo_uint64_lt (a.lo, b.lo)));
576}
577
578int
580{
582 return 1;
584 return 0;
585 return _cairo_uint128_lt (a, b);
586}
587
588int
589_cairo_uint128_eq (cairo_uint128_t a, cairo_uint128_t b)
590{
591 return (_cairo_uint64_eq (a.hi, b.hi) &&
592 _cairo_uint64_eq (a.lo, b.lo));
593}
594
595#if HAVE_UINT64_T
596#define _cairo_msbset64(q) (q & ((uint64_t) 1 << 63))
597#else
598#define _cairo_msbset64(q) (q.hi & ((uint32_t) 1 << 31))
599#endif
600
602_cairo_uint128_divrem (cairo_uint128_t num, cairo_uint128_t den)
603{
605 cairo_uint128_t bit;
606 cairo_uint128_t quo;
607
608 bit = _cairo_uint32_to_uint128 (1);
609
610 /* normalize to make den >= num, but not overflow */
611 while (_cairo_uint128_lt (den, num) && !_cairo_msbset64(den.hi))
612 {
613 bit = _cairo_uint128_lsl (bit, 1);
614 den = _cairo_uint128_lsl (den, 1);
615 }
616 quo = _cairo_uint32_to_uint128 (0);
617
618 /* generate quotient, one bit at a time */
620 {
621 if (_cairo_uint128_le (den, num))
622 {
623 num = _cairo_uint128_sub (num, den);
624 quo = _cairo_uint128_add (quo, bit);
625 }
626 bit = _cairo_uint128_rsl (bit, 1);
627 den = _cairo_uint128_rsl (den, 1);
628 }
629 qr.quo = quo;
630 qr.rem = num;
631 return qr;
632}
633
634cairo_uint128_t
635_cairo_uint128_negate (cairo_uint128_t a)
636{
637 a.lo = _cairo_uint64_not (a.lo);
638 a.hi = _cairo_uint64_not (a.hi);
640}
641
642cairo_uint128_t
643_cairo_uint128_not (cairo_uint128_t a)
644{
645 a.lo = _cairo_uint64_not (a.lo);
646 a.hi = _cairo_uint64_not (a.hi);
647 return a;
648}
649
650#endif /* !HAVE_UINT128_T */
651
654{
655 int num_neg = _cairo_int128_negative (num);
656 int den_neg = _cairo_int128_negative (den);
659
660 if (num_neg)
661 num = _cairo_int128_negate (num);
662 if (den_neg)
663 den = _cairo_int128_negate (den);
664 uqr = _cairo_uint128_divrem (num, den);
665 if (num_neg)
666 qr.rem = _cairo_int128_negate (uqr.rem);
667 else
668 qr.rem = uqr.rem;
669 if (num_neg != den_neg)
670 qr.quo = _cairo_int128_negate (uqr.quo);
671 else
672 qr.quo = uqr.quo;
673 return qr;
674}
675
687 cairo_uint64_t den)
688{
689 cairo_uquorem64_t result;
690 cairo_uint64_t B = _cairo_uint32s_to_uint64 (1, 0);
691
692 /* These are the high 64 bits of the *96* bit numerator. We're
693 * going to represent the numerator as xB + y, where x is a 64,
694 * and y is a 32 bit number. */
695 cairo_uint64_t x = _cairo_uint128_to_uint64 (_cairo_uint128_rsl(num, 32));
696
697 /* Initialise the result to indicate overflow. */
698 result.quo = _cairo_uint32s_to_uint64 (UINT_MAX, UINT_MAX); //PDB cast
699 result.rem = den;
700
701 /* Don't bother if the quotient is going to overflow. */
702 if (_cairo_uint64_ge (x, den)) {
703 return /* overflow */ result;
704 }
705
706 if (_cairo_uint64_lt (x, B)) {
707 /* When the final quotient is known to fit in 32 bits, then
708 * num < 2^64 if and only if den < 2^32. */
710 }
711 else {
712 /* Denominator is >= 2^32. the numerator is >= 2^64, and the
713 * division won't overflow: need two divrems. Write the
714 * numerator and denominator as
715 *
716 * num = xB + y x : 64 bits, y : 32 bits
717 * den = uB + v u, v : 32 bits
718 */
720 uint32_t u = uint64_hi32 (den);
722
723 /* Compute a lower bound approximate quotient of num/den
724 * from x/(u+1). Then we have
725 *
726 * x = q(u+1) + r ; q : 32 bits, r <= u : 32 bits.
727 *
728 * xB + y = q(u+1)B + (rB+y)
729 * = q(uB + B + v - v) + (rB+y)
730 * = q(uB + v) + qB - qv + (rB+y)
731 * = q(uB + v) + q(B-v) + (rB+y)
732 *
733 * The true quotient of num/den then is q plus the
734 * contribution of q(B-v) + (rB+y). The main contribution
735 * comes from the term q(B-v), with the term (rB+y) only
736 * contributing at most one part.
737 *
738 * The term q(B-v) must fit into 64 bits, since q fits into 32
739 * bits on account of being a lower bound to the true
740 * quotient, and as B-v <= 2^32, we may safely use a single
741 * 64/64 bit division to find its contribution. */
742
743 cairo_uquorem64_t quorem;
744 cairo_uint64_t remainder; /* will contain final remainder */
745 uint32_t quotient; /* will contain final quotient. */
746 uint32_t q;
747 uint32_t r;
748
749 /* Approximate quotient by dividing the high 64 bits of num by
750 * u+1. Watch out for overflow of u+1. */
751 if (u+1) {
753 q = _cairo_uint64_to_uint32 (quorem.quo);
754 r = _cairo_uint64_to_uint32 (quorem.rem);
755 }
756 else {
757 q = uint64_hi32 (x);
759 }
760 quotient = q;
761
762 /* Add the main term's contribution to quotient. Note B-v =
763 * -v as an uint32 (unless v = 0) */
764 if (v)
765 quorem = _cairo_uint64_divrem (_cairo_uint32x32_64_mul (q, -(int32_t)v), den); //PDB cast
766 else
767 quorem = _cairo_uint64_divrem (_cairo_uint32s_to_uint64 (q, 0), den);
768 quotient += _cairo_uint64_to_uint32 (quorem.quo);
769
770 /* Add the contribution of the subterm and start computing the
771 * true remainder. */
772 remainder = _cairo_uint32s_to_uint64 (r, y);
773 if (_cairo_uint64_ge (remainder, den)) {
774 remainder = _cairo_uint64_sub (remainder, den);
775 quotient++;
776 }
777
778 /* Add the contribution of the main term's remainder. The
779 * funky test here checks that remainder + main_rem >= den,
780 * taking into account overflow of the addition. */
781 remainder = _cairo_uint64_add (remainder, quorem.rem);
782 if (_cairo_uint64_ge (remainder, den) ||
783 _cairo_uint64_lt (remainder, quorem.rem))
784 {
785 remainder = _cairo_uint64_sub (remainder, den);
786 quotient++;
787 }
788
789 result.quo = _cairo_uint32_to_uint64 (quotient);
790 result.rem = remainder;
791 }
792 return result;
793}
794
797{
798 int num_neg = _cairo_int128_negative (num);
799 int den_neg = _cairo_int64_negative (den);
800 cairo_uint64_t nonneg_den;
803
804 if (num_neg)
805 num = _cairo_int128_negate (num);
806 if (den_neg)
807 nonneg_den = _cairo_int64_negate (den);
808 else
809 nonneg_den = den;
810
811 uqr = _cairo_uint_96by64_32x64_divrem (num, nonneg_den);
812 if (_cairo_uint64_eq (uqr.rem, _cairo_int64_to_uint64 (nonneg_den))) {
813 /* bail on overflow. */
814 qr.quo = _cairo_uint32s_to_uint64 (0x7FFFFFFF, UINT_MAX); //PDB cast
815 qr.rem = den;
816 return qr;
817 }
818
819 if (num_neg)
820 qr.rem = _cairo_int64_negate ((cairo_int64_t)uqr.rem); //PDB cast
821 else
822 qr.rem = uqr.rem;
823 if (num_neg != den_neg)
824 qr.quo = _cairo_int64_negate ((cairo_int64_t)uqr.quo); //PDB cast
825 else
826 qr.quo = uqr.quo;
827 return qr;
828}
829
830// clang-format on
831// NOLINTEND
cairo_x function declarations, which provide the fallback high precision arithmetic implementation.
#define _cairo_int64_negate(a)
#define _cairo_uint64_ge(a, b)
#define _cairo_uint64_gt(a, b)
#define _cairo_uint128_ne(a, b)
#define _cairo_uint64_le(a, b)
#define _cairo_uint128_le(a, b)
#define _cairo_int64_to_uint64(i)
#define _cairo_int64_negative(a)
#define _cairo_uint128_to_uint64(a)
#define _cairo_int128_negative(a)
#define _cairo_uint128_to_uint32(a)
#define _cairo_int128_negate(a)
#define _cairo_uint64_to_uint32(a)
cairo_uint64_t _cairo_uint64_mul(cairo_uint64_t a, cairo_uint64_t b)
cairo_uint128_t _cairo_uint128_lsl(cairo_uint128_t a, int shift)
cairo_int64_t _cairo_uint64_rsa(cairo_int64_t a, int shift)
cairo_uint64_t _cairo_uint64_add(cairo_uint64_t a, cairo_uint64_t b)
Definition: cairo-wideint.c:97
int _cairo_int64_lt(cairo_int64_t a, cairo_int64_t b)
cairo_uint64_t _cairo_uint32x32_64_mul(uint32_t a, uint32_t b)
cairo_uint64_t _cairo_uint64_sub(cairo_uint64_t a, cairo_uint64_t b)
cairo_uint128_t _cairo_uint32_to_uint128(uint32_t i)
#define uint32_lo(i)
int _cairo_uint64_eq(cairo_uint64_t a, cairo_uint64_t b)
cairo_uint128_t _cairo_uint128_negate(cairo_uint128_t a)
cairo_uint128_t _cairo_uint128_not(cairo_uint128_t a)
cairo_quorem64_t _cairo_int_96by64_32x64_divrem(cairo_int128_t num, cairo_int64_t den)
cairo_uint128_t _cairo_uint64_to_uint128(cairo_uint64_t i)
static cairo_uint64_t uint64_hi(cairo_uint64_t i)
const char * cairo_impl64
Definition: cairo-wideint.c:64
cairo_uint128_t _cairo_uint128_sub(cairo_uint128_t a, cairo_uint128_t b)
cairo_quorem128_t _cairo_int128_divrem(cairo_int128_t num, cairo_int128_t den)
#define _cairo_uint32_rsa(a, n)
#define _cairo_msbset64(q)
cairo_uquorem64_t _cairo_uint64_divrem(cairo_uint64_t num, cairo_uint64_t den)
int _cairo_uint128_eq(cairo_uint128_t a, cairo_uint128_t b)
cairo_uint128_t _cairo_uint128_rsl(cairo_uint128_t a, int shift)
const char * cairo_impl128
cairo_uint64_t _cairo_uint32_to_uint64(uint32_t i)
Definition: cairo-wideint.c:67
cairo_uquorem64_t _cairo_uint_96by64_32x64_divrem(cairo_uint128_t num, cairo_uint64_t den)
_cairo_uint_96by64_32x64_divrem:
cairo_int128_t _cairo_int64x64_128_mul(cairo_int64_t a, cairo_int64_t b)
static cairo_uint64_t uint64_lo(cairo_uint64_t i)
static cairo_uint64_t _cairo_uint32s_to_uint64(uint32_t h, uint32_t l)
Definition: cairo-wideint.c:87
#define uint64_hi32(i)
#define uint32_carry16
#define uint64_lo32(i)
cairo_uint64_t _cairo_uint64_lsl(cairo_uint64_t a, int shift)
cairo_int128_t _cairo_int32_to_int128(int32_t i)
cairo_uquorem128_t _cairo_uint128_divrem(cairo_uint128_t num, cairo_uint128_t den)
int _cairo_uint128_lt(cairo_uint128_t a, cairo_uint128_t b)
cairo_int128_t _cairo_int64_to_int128(cairo_int64_t i)
cairo_int64_t _cairo_int32_to_int64(int32_t i)
Definition: cairo-wideint.c:77
cairo_uint64_t _cairo_uint64_negate(cairo_uint64_t a)
static const cairo_uint64_t uint64_carry32
cairo_uint128_t _cairo_uint128_add(cairo_uint128_t a, cairo_uint128_t b)
static cairo_uint64_t uint64_shift32(cairo_uint64_t i)
cairo_uint64_t _cairo_uint64_not(cairo_uint64_t a)
cairo_quorem64_t _cairo_int64_divrem(cairo_int64_t num, cairo_int64_t den)
cairo_uint128_t _cairo_uint64x64_128_mul(cairo_uint64_t a, cairo_uint64_t b)
int _cairo_int128_lt(cairo_int128_t a, cairo_int128_t b)
int _cairo_uint64_lt(cairo_uint64_t a, cairo_uint64_t b)
cairo_uint64_t _cairo_uint64_rsl(cairo_uint64_t a, int shift)
#define uint32_hi(i)
cairo_int64_t _cairo_int32x32_64_mul(int32_t a, int32_t b)
cairo_uint128_t _cairo_uint128_mul(cairo_uint128_t a, cairo_uint128_t b)
cairo_uint128_t _cairo_uint128_rsa(cairo_int128_t a, int shift)