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gerrit-public.fairphone.software / fp2-dev / platform / external / chromium_org / v8 / 7bd87f0fe09b5d7c12de8f1db0bdb759dc4130ac / . / test / cctest / test-bignum.cc
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ager@chromium.org01fe7df2010-11-10 11:59:11 +0000[diff] [blame]1// Copyright 2010 the V8 project authors. All rights reserved.
2// Redistribution and use in source and binary forms, with or without
3// modification, are permitted provided that the following conditions are
4// met:
5//
6// * Redistributions of source code must retain the above copyright
7// notice, this list of conditions and the following disclaimer.
8// * Redistributions in binary form must reproduce the above
9// copyright notice, this list of conditions and the following
10// disclaimer in the documentation and/or other materials provided
11// with the distribution.
12// * Neither the name of Google Inc. nor the names of its
13// contributors may be used to endorse or promote products derived
14// from this software without specific prior written permission.
15//
16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28#include <stdlib.h>
29
30#include "v8.h"
31
32#include "platform.h"
33#include "cctest.h"
34#include "bignum.h"
35
36using namespace v8::internal;
37
38
39static const int kBufferSize = 1024;
40
41static void AssignHexString(Bignum* bignum, const char* str) {
42 bignum->AssignHexString(Vector<const char>(str, StrLength(str)));
43}
44
45
46static void AssignDecimalString(Bignum* bignum, const char* str) {
47 bignum->AssignDecimalString(Vector<const char>(str, StrLength(str)));
48}
49
50
51TEST(Assign) {
52 char buffer[kBufferSize];
53 Bignum bignum;
54 Bignum bignum2;
55 bignum.AssignUInt16(0);
56 CHECK(bignum.ToHexString(buffer, kBufferSize));
57 CHECK_EQ("0", buffer);
58 bignum.AssignUInt16(0xA);
59 CHECK(bignum.ToHexString(buffer, kBufferSize));
60 CHECK_EQ("A", buffer);
61 bignum.AssignUInt16(0x20);
62 CHECK(bignum.ToHexString(buffer, kBufferSize));
63 CHECK_EQ("20", buffer);
64
65
66 bignum.AssignUInt64(0);
67 CHECK(bignum.ToHexString(buffer, kBufferSize));
68 CHECK_EQ("0", buffer);
69 bignum.AssignUInt64(0xA);
70 CHECK(bignum.ToHexString(buffer, kBufferSize));
71 CHECK_EQ("A", buffer);
72 bignum.AssignUInt64(0x20);
73 CHECK(bignum.ToHexString(buffer, kBufferSize));
74 CHECK_EQ("20", buffer);
75 bignum.AssignUInt64(0x100);
76 CHECK(bignum.ToHexString(buffer, kBufferSize));
77 CHECK_EQ("100", buffer);
78
79 // The first real test, since this will not fit into one bigit.
80 bignum.AssignUInt64(0x12345678);
81 CHECK(bignum.ToHexString(buffer, kBufferSize));
82 CHECK_EQ("12345678", buffer);
83
84 uint64_t big = V8_2PART_UINT64_C(0xFFFFFFFF, FFFFFFFF);
85 bignum.AssignUInt64(big);
86 CHECK(bignum.ToHexString(buffer, kBufferSize));
87 CHECK_EQ("FFFFFFFFFFFFFFFF", buffer);
88
89 big = V8_2PART_UINT64_C(0x12345678, 9ABCDEF0);
90 bignum.AssignUInt64(big);
91 CHECK(bignum.ToHexString(buffer, kBufferSize));
92 CHECK_EQ("123456789ABCDEF0", buffer);
93
94 bignum2.AssignBignum(bignum);
95 CHECK(bignum2.ToHexString(buffer, kBufferSize));
96 CHECK_EQ("123456789ABCDEF0", buffer);
97
98 AssignDecimalString(&bignum, "0");
99 CHECK(bignum.ToHexString(buffer, kBufferSize));
100 CHECK_EQ("0", buffer);
101
102 AssignDecimalString(&bignum, "1");
103 CHECK(bignum.ToHexString(buffer, kBufferSize));
104 CHECK_EQ("1", buffer);
105
106 AssignDecimalString(&bignum, "1234567890");
107 CHECK(bignum.ToHexString(buffer, kBufferSize));
108 CHECK_EQ("499602D2", buffer);
109
110 AssignHexString(&bignum, "0");
111 CHECK(bignum.ToHexString(buffer, kBufferSize));
112 CHECK_EQ("0", buffer);
113
114 AssignHexString(&bignum, "123456789ABCDEF0");
115 CHECK(bignum.ToHexString(buffer, kBufferSize));
116 CHECK_EQ("123456789ABCDEF0", buffer);
117}
118
119
120TEST(ShiftLeft) {
121 char buffer[kBufferSize];
122 Bignum bignum;
123 AssignHexString(&bignum, "0");
124 bignum.ShiftLeft(100);
125 CHECK(bignum.ToHexString(buffer, kBufferSize));
126 CHECK_EQ("0", buffer);
127
128 AssignHexString(&bignum, "1");
129 bignum.ShiftLeft(1);
130 CHECK(bignum.ToHexString(buffer, kBufferSize));
131 CHECK_EQ("2", buffer);
132
133 AssignHexString(&bignum, "1");
134 bignum.ShiftLeft(4);
135 CHECK(bignum.ToHexString(buffer, kBufferSize));
136 CHECK_EQ("10", buffer);
137
138 AssignHexString(&bignum, "1");
139 bignum.ShiftLeft(32);
140 CHECK(bignum.ToHexString(buffer, kBufferSize));
141 CHECK_EQ("100000000", buffer);
142
143 AssignHexString(&bignum, "1");
144 bignum.ShiftLeft(64);
145 CHECK(bignum.ToHexString(buffer, kBufferSize));
146 CHECK_EQ("10000000000000000", buffer);
147
148 AssignHexString(&bignum, "123456789ABCDEF");
149 bignum.ShiftLeft(64);
150 CHECK(bignum.ToHexString(buffer, kBufferSize));
151 CHECK_EQ("123456789ABCDEF0000000000000000", buffer);
152 bignum.ShiftLeft(1);
153 CHECK(bignum.ToHexString(buffer, kBufferSize));
154 CHECK_EQ("2468ACF13579BDE0000000000000000", buffer);
155}
156
157
158TEST(AddUInt64) {
159 char buffer[kBufferSize];
160 Bignum bignum;
161 AssignHexString(&bignum, "0");
162 bignum.AddUInt64(0xA);
163 CHECK(bignum.ToHexString(buffer, kBufferSize));
164 CHECK_EQ("A", buffer);
165
166 AssignHexString(&bignum, "1");
167 bignum.AddUInt64(0xA);
168 CHECK(bignum.ToHexString(buffer, kBufferSize));
169 CHECK_EQ("B", buffer);
170
171 AssignHexString(&bignum, "1");
172 bignum.AddUInt64(0x100);
173 CHECK(bignum.ToHexString(buffer, kBufferSize));
174 CHECK_EQ("101", buffer);
175
176 AssignHexString(&bignum, "1");
177 bignum.AddUInt64(0xFFFF);
178 CHECK(bignum.ToHexString(buffer, kBufferSize));
179 CHECK_EQ("10000", buffer);
180
181 AssignHexString(&bignum, "FFFFFFF");
182 bignum.AddUInt64(0x1);
183 CHECK(bignum.ToHexString(buffer, kBufferSize));
184 CHECK_EQ("10000000", buffer);
185
186 AssignHexString(&bignum, "10000000000000000000000000000000000000000000");
187 bignum.AddUInt64(0xFFFF);
188 CHECK(bignum.ToHexString(buffer, kBufferSize));
189 CHECK_EQ("1000000000000000000000000000000000000000FFFF", buffer);
190
191 AssignHexString(&bignum, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF");
192 bignum.AddUInt64(0x1);
193 CHECK(bignum.ToHexString(buffer, kBufferSize));
194 CHECK_EQ("100000000000000000000000000000000000000000000", buffer);
195
196 bignum.AssignUInt16(0x1);
197 bignum.ShiftLeft(100);
198 bignum.AddUInt64(1);
199 CHECK(bignum.ToHexString(buffer, kBufferSize));
200 CHECK_EQ("10000000000000000000000001", buffer);
201
202 bignum.AssignUInt16(0x1);
203 bignum.ShiftLeft(100);
204 bignum.AddUInt64(0xFFFF);
205 CHECK(bignum.ToHexString(buffer, kBufferSize));
206 CHECK_EQ("1000000000000000000000FFFF", buffer);
207
208 AssignHexString(&bignum, "0");
209 bignum.AddUInt64(V8_2PART_UINT64_C(0xA, 00000000));
210 CHECK(bignum.ToHexString(buffer, kBufferSize));
211 CHECK_EQ("A00000000", buffer);
212
213 AssignHexString(&bignum, "1");
214 bignum.AddUInt64(V8_2PART_UINT64_C(0xA, 00000000));
215 CHECK(bignum.ToHexString(buffer, kBufferSize));
216 CHECK_EQ("A00000001", buffer);
217
218 AssignHexString(&bignum, "1");
219 bignum.AddUInt64(V8_2PART_UINT64_C(0x100, 00000000));
220 CHECK(bignum.ToHexString(buffer, kBufferSize));
221 CHECK_EQ("10000000001", buffer);
222
223 AssignHexString(&bignum, "1");
224 bignum.AddUInt64(V8_2PART_UINT64_C(0xFFFF, 00000000));
225 CHECK(bignum.ToHexString(buffer, kBufferSize));
226 CHECK_EQ("FFFF00000001", buffer);
227
228 AssignHexString(&bignum, "FFFFFFF");
229 bignum.AddUInt64(V8_2PART_UINT64_C(0x1, 00000000));
230 CHECK(bignum.ToHexString(buffer, kBufferSize));
231 CHECK_EQ("10FFFFFFF", buffer);
232
233 AssignHexString(&bignum, "10000000000000000000000000000000000000000000");
234 bignum.AddUInt64(V8_2PART_UINT64_C(0xFFFF, 00000000));
235 CHECK(bignum.ToHexString(buffer, kBufferSize));
236 CHECK_EQ("10000000000000000000000000000000FFFF00000000", buffer);
237
238 AssignHexString(&bignum, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF");
239 bignum.AddUInt64(V8_2PART_UINT64_C(0x1, 00000000));
240 CHECK(bignum.ToHexString(buffer, kBufferSize));
241 CHECK_EQ("1000000000000000000000000000000000000FFFFFFFF", buffer);
242
243 bignum.AssignUInt16(0x1);
244 bignum.ShiftLeft(100);
245 bignum.AddUInt64(V8_2PART_UINT64_C(0x1, 00000000));
246 CHECK(bignum.ToHexString(buffer, kBufferSize));
247 CHECK_EQ("10000000000000000100000000", buffer);
248
249 bignum.AssignUInt16(0x1);
250 bignum.ShiftLeft(100);
251 bignum.AddUInt64(V8_2PART_UINT64_C(0xFFFF, 00000000));
252 CHECK(bignum.ToHexString(buffer, kBufferSize));
253 CHECK_EQ("10000000000000FFFF00000000", buffer);
254}
255
256
257TEST(AddBignum) {
258 char buffer[kBufferSize];
259 Bignum bignum;
260 Bignum other;
261
262 AssignHexString(&other, "1");
263 AssignHexString(&bignum, "0");
264 bignum.AddBignum(other);
265 CHECK(bignum.ToHexString(buffer, kBufferSize));
266 CHECK_EQ("1", buffer);
267
268 AssignHexString(&bignum, "1");
269 bignum.AddBignum(other);
270 CHECK(bignum.ToHexString(buffer, kBufferSize));
271 CHECK_EQ("2", buffer);
272
273 AssignHexString(&bignum, "FFFFFFF");
274 bignum.AddBignum(other);
275 CHECK(bignum.ToHexString(buffer, kBufferSize));
276 CHECK_EQ("10000000", buffer);
277
278 AssignHexString(&bignum, "FFFFFFFFFFFFFF");
279 bignum.AddBignum(other);
280 CHECK(bignum.ToHexString(buffer, kBufferSize));
281 CHECK_EQ("100000000000000", buffer);
282
283 AssignHexString(&bignum, "10000000000000000000000000000000000000000000");
284 bignum.AddBignum(other);
285 CHECK(bignum.ToHexString(buffer, kBufferSize));
286 CHECK_EQ("10000000000000000000000000000000000000000001", buffer);
287
288 AssignHexString(&other, "1000000000000");
289
290 AssignHexString(&bignum, "1");
291 bignum.AddBignum(other);
292 CHECK(bignum.ToHexString(buffer, kBufferSize));
293 CHECK_EQ("1000000000001", buffer);
294
295 AssignHexString(&bignum, "FFFFFFF");
296 bignum.AddBignum(other);
297 CHECK(bignum.ToHexString(buffer, kBufferSize));
298 CHECK_EQ("100000FFFFFFF", buffer);
299
300 AssignHexString(&bignum, "10000000000000000000000000000000000000000000");
301 bignum.AddBignum(other);
302 CHECK(bignum.ToHexString(buffer, kBufferSize));
303 CHECK_EQ("10000000000000000000000000000001000000000000", buffer);
304
305 AssignHexString(&bignum, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF");
306 bignum.AddBignum(other);
307 CHECK(bignum.ToHexString(buffer, kBufferSize));
308 CHECK_EQ("1000000000000000000000000000000FFFFFFFFFFFF", buffer);
309
310 bignum.AssignUInt16(0x1);
311 bignum.ShiftLeft(100);
312 bignum.AddBignum(other);
313 CHECK(bignum.ToHexString(buffer, kBufferSize));
314 CHECK_EQ("10000000000001000000000000", buffer);
315
316 other.ShiftLeft(64);
317 // other == "10000000000000000000000000000"
318
319 bignum.AssignUInt16(0x1);
320 bignum.AddBignum(other);
321 CHECK(bignum.ToHexString(buffer, kBufferSize));
322 CHECK_EQ("10000000000000000000000000001", buffer);
323
324 AssignHexString(&bignum, "FFFFFFF");
325 bignum.AddBignum(other);
326 CHECK(bignum.ToHexString(buffer, kBufferSize));
327 CHECK_EQ("1000000000000000000000FFFFFFF", buffer);
328
329 AssignHexString(&bignum, "10000000000000000000000000000000000000000000");
330 bignum.AddBignum(other);
331 CHECK(bignum.ToHexString(buffer, kBufferSize));
332 CHECK_EQ("10000000000000010000000000000000000000000000", buffer);
333
334 AssignHexString(&bignum, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF");
335 bignum.AddBignum(other);
336 CHECK(bignum.ToHexString(buffer, kBufferSize));
337 CHECK_EQ("100000000000000FFFFFFFFFFFFFFFFFFFFFFFFFFFF", buffer);
338
339 bignum.AssignUInt16(0x1);
340 bignum.ShiftLeft(100);
341 bignum.AddBignum(other);
342 CHECK(bignum.ToHexString(buffer, kBufferSize));
343 CHECK_EQ("10010000000000000000000000000", buffer);
344}
345
346
347TEST(SubtractBignum) {
348 char buffer[kBufferSize];
349 Bignum bignum;
350 Bignum other;
351
352 AssignHexString(&bignum, "1");
353 AssignHexString(&other, "0");
354 bignum.SubtractBignum(other);
355 CHECK(bignum.ToHexString(buffer, kBufferSize));
356 CHECK_EQ("1", buffer);
357
358 AssignHexString(&bignum, "2");
359 AssignHexString(&other, "0");
360 bignum.SubtractBignum(other);
361 CHECK(bignum.ToHexString(buffer, kBufferSize));
362 CHECK_EQ("2", buffer);
363
364 AssignHexString(&bignum, "10000000");
365 AssignHexString(&other, "1");
366 bignum.SubtractBignum(other);
367 CHECK(bignum.ToHexString(buffer, kBufferSize));
368 CHECK_EQ("FFFFFFF", buffer);
369
370 AssignHexString(&bignum, "100000000000000");
371 AssignHexString(&other, "1");
372 bignum.SubtractBignum(other);
373 CHECK(bignum.ToHexString(buffer, kBufferSize));
374 CHECK_EQ("FFFFFFFFFFFFFF", buffer);
375
376 AssignHexString(&bignum, "10000000000000000000000000000000000000000001");
377 AssignHexString(&other, "1");
378 bignum.SubtractBignum(other);
379 CHECK(bignum.ToHexString(buffer, kBufferSize));
380 CHECK_EQ("10000000000000000000000000000000000000000000", buffer);
381
382 AssignHexString(&bignum, "1000000000001");
383 AssignHexString(&other, "1000000000000");
384 bignum.SubtractBignum(other);
385 CHECK(bignum.ToHexString(buffer, kBufferSize));
386 CHECK_EQ("1", buffer);
387
388 AssignHexString(&bignum, "100000FFFFFFF");
389 AssignHexString(&other, "1000000000000");
390 bignum.SubtractBignum(other);
391 CHECK(bignum.ToHexString(buffer, kBufferSize));
392 CHECK_EQ("FFFFFFF", buffer);
393
394 AssignHexString(&bignum, "10000000000000000000000000000001000000000000");
395 AssignHexString(&other, "1000000000000");
396 bignum.SubtractBignum(other);
397 CHECK(bignum.ToHexString(buffer, kBufferSize));
398 CHECK_EQ("10000000000000000000000000000000000000000000", buffer);
399
400 AssignHexString(&bignum, "1000000000000000000000000000000FFFFFFFFFFFF");
401 AssignHexString(&other, "1000000000000");
402 bignum.SubtractBignum(other);
403 CHECK(bignum.ToHexString(buffer, kBufferSize));
404 CHECK_EQ("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", buffer);
405
406 bignum.AssignUInt16(0x1);
407 bignum.ShiftLeft(100);
408 // "10 0000 0000 0000 0000 0000 0000"
409 AssignHexString(&other, "1000000000000");
410 bignum.SubtractBignum(other);
411 CHECK(bignum.ToHexString(buffer, kBufferSize));
412 CHECK_EQ("FFFFFFFFFFFFF000000000000", buffer);
413
414 AssignHexString(&other, "1000000000000");
415 other.ShiftLeft(48);
416 // other == "1000000000000000000000000"
417
418 bignum.AssignUInt16(0x1);
419 bignum.ShiftLeft(100);
420 // bignum == "10000000000000000000000000"
421 bignum.SubtractBignum(other);
422 CHECK(bignum.ToHexString(buffer, kBufferSize));
423 CHECK_EQ("F000000000000000000000000", buffer);
424
425 other.AssignUInt16(0x1);
426 other.ShiftLeft(35);
427 // other == "800000000"
428 AssignHexString(&bignum, "FFFFFFF");
429 bignum.ShiftLeft(60);
430 // bignum = FFFFFFF000000000000000
431 bignum.SubtractBignum(other);
432 CHECK(bignum.ToHexString(buffer, kBufferSize));
433 CHECK_EQ("FFFFFFEFFFFFF800000000", buffer);
434
435 AssignHexString(&bignum, "10000000000000000000000000000000000000000000");
436 bignum.SubtractBignum(other);
437 CHECK(bignum.ToHexString(buffer, kBufferSize));
438 CHECK_EQ("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF800000000", buffer);
439
440 AssignHexString(&bignum, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF");
441 bignum.SubtractBignum(other);
442 CHECK(bignum.ToHexString(buffer, kBufferSize));
443 CHECK_EQ("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF7FFFFFFFF", buffer);
444}
445
446
447TEST(MultiplyUInt32) {
448 char buffer[kBufferSize];
449 Bignum bignum;
450
451 AssignHexString(&bignum, "0");
452 bignum.MultiplyByUInt32(0x25);
453 CHECK(bignum.ToHexString(buffer, kBufferSize));
454 CHECK_EQ("0", buffer);
455
456 AssignHexString(&bignum, "2");
457 bignum.MultiplyByUInt32(0x5);
458 CHECK(bignum.ToHexString(buffer, kBufferSize));
459 CHECK_EQ("A", buffer);
460
461 AssignHexString(&bignum, "10000000");
462 bignum.MultiplyByUInt32(0x9);
463 CHECK(bignum.ToHexString(buffer, kBufferSize));
464 CHECK_EQ("90000000", buffer);
465
466 AssignHexString(&bignum, "100000000000000");
467 bignum.MultiplyByUInt32(0xFFFF);
468 CHECK(bignum.ToHexString(buffer, kBufferSize));
469 CHECK_EQ("FFFF00000000000000", buffer);
470
471 AssignHexString(&bignum, "100000000000000");
472 bignum.MultiplyByUInt32(0xFFFFFFFF);
473 CHECK(bignum.ToHexString(buffer, kBufferSize));
474 CHECK_EQ("FFFFFFFF00000000000000", buffer);
475
476 AssignHexString(&bignum, "1234567ABCD");
477 bignum.MultiplyByUInt32(0xFFF);
478 CHECK(bignum.ToHexString(buffer, kBufferSize));
479 CHECK_EQ("12333335552433", buffer);
480
481 AssignHexString(&bignum, "1234567ABCD");
482 bignum.MultiplyByUInt32(0xFFFFFFF);
483 CHECK(bignum.ToHexString(buffer, kBufferSize));
484 CHECK_EQ("12345679998A985433", buffer);
485
486 AssignHexString(&bignum, "FFFFFFFFFFFFFFFF");
487 bignum.MultiplyByUInt32(0x2);
488 CHECK(bignum.ToHexString(buffer, kBufferSize));
489 CHECK_EQ("1FFFFFFFFFFFFFFFE", buffer);
490
491 AssignHexString(&bignum, "FFFFFFFFFFFFFFFF");
492 bignum.MultiplyByUInt32(0x4);
493 CHECK(bignum.ToHexString(buffer, kBufferSize));
494 CHECK_EQ("3FFFFFFFFFFFFFFFC", buffer);
495
496 AssignHexString(&bignum, "FFFFFFFFFFFFFFFF");
497 bignum.MultiplyByUInt32(0xF);
498 CHECK(bignum.ToHexString(buffer, kBufferSize));
499 CHECK_EQ("EFFFFFFFFFFFFFFF1", buffer);
500
501 AssignHexString(&bignum, "FFFFFFFFFFFFFFFF");
502 bignum.MultiplyByUInt32(0xFFFFFF);
503 CHECK(bignum.ToHexString(buffer, kBufferSize));
504 CHECK_EQ("FFFFFEFFFFFFFFFF000001", buffer);
505
506 bignum.AssignUInt16(0x1);
507 bignum.ShiftLeft(100);
508 // "10 0000 0000 0000 0000 0000 0000"
509 bignum.MultiplyByUInt32(2);
510 CHECK(bignum.ToHexString(buffer, kBufferSize));
511 CHECK_EQ("20000000000000000000000000", buffer);
512
513 bignum.AssignUInt16(0x1);
514 bignum.ShiftLeft(100);
515 // "10 0000 0000 0000 0000 0000 0000"
516 bignum.MultiplyByUInt32(0xF);
517 CHECK(bignum.ToHexString(buffer, kBufferSize));
518 CHECK_EQ("F0000000000000000000000000", buffer);
519
520 bignum.AssignUInt16(0xFFFF);
521 bignum.ShiftLeft(100);
522 // "FFFF0 0000 0000 0000 0000 0000 0000"
523 bignum.MultiplyByUInt32(0xFFFF);
524 CHECK(bignum.ToHexString(buffer, kBufferSize));
525 CHECK_EQ("FFFE00010000000000000000000000000", buffer);
526
527 bignum.AssignUInt16(0xFFFF);
528 bignum.ShiftLeft(100);
529 // "FFFF0 0000 0000 0000 0000 0000 0000"
530 bignum.MultiplyByUInt32(0xFFFFFFFF);
531 CHECK(bignum.ToHexString(buffer, kBufferSize));
532 CHECK_EQ("FFFEFFFF00010000000000000000000000000", buffer);
533
534 bignum.AssignUInt16(0xFFFF);
535 bignum.ShiftLeft(100);
536 // "FFFF0 0000 0000 0000 0000 0000 0000"
537 bignum.MultiplyByUInt32(0xFFFFFFFF);
538 CHECK(bignum.ToHexString(buffer, kBufferSize));
539 CHECK_EQ("FFFEFFFF00010000000000000000000000000", buffer);
540
541 AssignDecimalString(&bignum, "15611230384529777");
542 bignum.MultiplyByUInt32(10000000);
543 CHECK(bignum.ToHexString(buffer, kBufferSize));
544 CHECK_EQ("210EDD6D4CDD2580EE80", buffer);
545}
546
547
548TEST(MultiplyUInt64) {
549 char buffer[kBufferSize];
550 Bignum bignum;
551
552 AssignHexString(&bignum, "0");
553 bignum.MultiplyByUInt64(0x25);
554 CHECK(bignum.ToHexString(buffer, kBufferSize));
555 CHECK_EQ("0", buffer);
556
557 AssignHexString(&bignum, "2");
558 bignum.MultiplyByUInt64(0x5);
559 CHECK(bignum.ToHexString(buffer, kBufferSize));
560 CHECK_EQ("A", buffer);
561
562 AssignHexString(&bignum, "10000000");
563 bignum.MultiplyByUInt64(0x9);
564 CHECK(bignum.ToHexString(buffer, kBufferSize));
565 CHECK_EQ("90000000", buffer);
566
567 AssignHexString(&bignum, "100000000000000");
568 bignum.MultiplyByUInt64(0xFFFF);
569 CHECK(bignum.ToHexString(buffer, kBufferSize));
570 CHECK_EQ("FFFF00000000000000", buffer);
571
572 AssignHexString(&bignum, "100000000000000");
573 bignum.MultiplyByUInt64(V8_2PART_UINT64_C(0xFFFFFFFF, FFFFFFFF));
574 CHECK(bignum.ToHexString(buffer, kBufferSize));
575 CHECK_EQ("FFFFFFFFFFFFFFFF00000000000000", buffer);
576
577 AssignHexString(&bignum, "1234567ABCD");
578 bignum.MultiplyByUInt64(0xFFF);
579 CHECK(bignum.ToHexString(buffer, kBufferSize));
580 CHECK_EQ("12333335552433", buffer);
581
582 AssignHexString(&bignum, "1234567ABCD");
583 bignum.MultiplyByUInt64(V8_2PART_UINT64_C(0xFF, FFFFFFFF));
584 CHECK(bignum.ToHexString(buffer, kBufferSize));
585 CHECK_EQ("1234567ABCBDCBA985433", buffer);
586
587 AssignHexString(&bignum, "FFFFFFFFFFFFFFFF");
588 bignum.MultiplyByUInt64(0x2);
589 CHECK(bignum.ToHexString(buffer, kBufferSize));
590 CHECK_EQ("1FFFFFFFFFFFFFFFE", buffer);
591
592 AssignHexString(&bignum, "FFFFFFFFFFFFFFFF");
593 bignum.MultiplyByUInt64(0x4);
594 CHECK(bignum.ToHexString(buffer, kBufferSize));
595 CHECK_EQ("3FFFFFFFFFFFFFFFC", buffer);
596
597 AssignHexString(&bignum, "FFFFFFFFFFFFFFFF");
598 bignum.MultiplyByUInt64(0xF);
599 CHECK(bignum.ToHexString(buffer, kBufferSize));
600 CHECK_EQ("EFFFFFFFFFFFFFFF1", buffer);
601
602 AssignHexString(&bignum, "FFFFFFFFFFFFFFFF");
603 bignum.MultiplyByUInt64(V8_2PART_UINT64_C(0xFFFFFFFF, FFFFFFFF));
604 CHECK(bignum.ToHexString(buffer, kBufferSize));
605 CHECK_EQ("FFFFFFFFFFFFFFFE0000000000000001", buffer);
606
607 bignum.AssignUInt16(0x1);
608 bignum.ShiftLeft(100);
609 // "10 0000 0000 0000 0000 0000 0000"
610 bignum.MultiplyByUInt64(2);
611 CHECK(bignum.ToHexString(buffer, kBufferSize));
612 CHECK_EQ("20000000000000000000000000", buffer);
613
614 bignum.AssignUInt16(0x1);
615 bignum.ShiftLeft(100);
616 // "10 0000 0000 0000 0000 0000 0000"
617 bignum.MultiplyByUInt64(0xF);
618 CHECK(bignum.ToHexString(buffer, kBufferSize));
619 CHECK_EQ("F0000000000000000000000000", buffer);
620
621 bignum.AssignUInt16(0xFFFF);
622 bignum.ShiftLeft(100);
623 // "FFFF0 0000 0000 0000 0000 0000 0000"
624 bignum.MultiplyByUInt64(0xFFFF);
625 CHECK(bignum.ToHexString(buffer, kBufferSize));
626 CHECK_EQ("FFFE00010000000000000000000000000", buffer);
627
628 bignum.AssignUInt16(0xFFFF);
629 bignum.ShiftLeft(100);
630 // "FFFF0 0000 0000 0000 0000 0000 0000"
631 bignum.MultiplyByUInt64(0xFFFFFFFF);
632 CHECK(bignum.ToHexString(buffer, kBufferSize));
633 CHECK_EQ("FFFEFFFF00010000000000000000000000000", buffer);
634
635 bignum.AssignUInt16(0xFFFF);
636 bignum.ShiftLeft(100);
637 // "FFFF0 0000 0000 0000 0000 0000 0000"
638 bignum.MultiplyByUInt64(V8_2PART_UINT64_C(0xFFFFFFFF, FFFFFFFF));
639 CHECK(bignum.ToHexString(buffer, kBufferSize));
640 CHECK_EQ("FFFEFFFFFFFFFFFF00010000000000000000000000000", buffer);
641
642 AssignDecimalString(&bignum, "15611230384529777");
643 bignum.MultiplyByUInt64(V8_2PART_UINT64_C(0x8ac72304, 89e80000));
644 CHECK(bignum.ToHexString(buffer, kBufferSize));
645 CHECK_EQ("1E10EE4B11D15A7F3DE7F3C7680000", buffer);
646}
647
648
649TEST(MultiplyPowerOfTen) {
650 char buffer[kBufferSize];
651 Bignum bignum;
652
653 AssignDecimalString(&bignum, "1234");
654 bignum.MultiplyByPowerOfTen(1);
655 CHECK(bignum.ToHexString(buffer, kBufferSize));
656 CHECK_EQ("3034", buffer);
657
658 AssignDecimalString(&bignum, "1234");
659 bignum.MultiplyByPowerOfTen(2);
660 CHECK(bignum.ToHexString(buffer, kBufferSize));
661 CHECK_EQ("1E208", buffer);
662
663 AssignDecimalString(&bignum, "1234");
664 bignum.MultiplyByPowerOfTen(3);
665 CHECK(bignum.ToHexString(buffer, kBufferSize));
666 CHECK_EQ("12D450", buffer);
667
668 AssignDecimalString(&bignum, "1234");
669 bignum.MultiplyByPowerOfTen(4);
670 CHECK(bignum.ToHexString(buffer, kBufferSize));
671 CHECK_EQ("BC4B20", buffer);
672
673 AssignDecimalString(&bignum, "1234");
674 bignum.MultiplyByPowerOfTen(5);
675 CHECK(bignum.ToHexString(buffer, kBufferSize));
676 CHECK_EQ("75AEF40", buffer);
677
678 AssignDecimalString(&bignum, "1234");
679 bignum.MultiplyByPowerOfTen(6);
680 CHECK(bignum.ToHexString(buffer, kBufferSize));
681 CHECK_EQ("498D5880", buffer);
682
683 AssignDecimalString(&bignum, "1234");
684 bignum.MultiplyByPowerOfTen(7);
685 CHECK(bignum.ToHexString(buffer, kBufferSize));
686 CHECK_EQ("2DF857500", buffer);
687
688 AssignDecimalString(&bignum, "1234");
689 bignum.MultiplyByPowerOfTen(8);
690 CHECK(bignum.ToHexString(buffer, kBufferSize));
691 CHECK_EQ("1CBB369200", buffer);
692
693 AssignDecimalString(&bignum, "1234");
694 bignum.MultiplyByPowerOfTen(9);
695 CHECK(bignum.ToHexString(buffer, kBufferSize));
696 CHECK_EQ("11F5021B400", buffer);
697
698 AssignDecimalString(&bignum, "1234");
699 bignum.MultiplyByPowerOfTen(10);
700 CHECK(bignum.ToHexString(buffer, kBufferSize));
701 CHECK_EQ("B3921510800", buffer);
702
703 AssignDecimalString(&bignum, "1234");
704 bignum.MultiplyByPowerOfTen(11);
705 CHECK(bignum.ToHexString(buffer, kBufferSize));
706 CHECK_EQ("703B4D2A5000", buffer);
707
708 AssignDecimalString(&bignum, "1234");
709 bignum.MultiplyByPowerOfTen(12);
710 CHECK(bignum.ToHexString(buffer, kBufferSize));
711 CHECK_EQ("4625103A72000", buffer);
712
713 AssignDecimalString(&bignum, "1234");
714 bignum.MultiplyByPowerOfTen(13);
715 CHECK(bignum.ToHexString(buffer, kBufferSize));
716 CHECK_EQ("2BD72A24874000", buffer);
717
718 AssignDecimalString(&bignum, "1234");
719 bignum.MultiplyByPowerOfTen(14);
720 CHECK(bignum.ToHexString(buffer, kBufferSize));
721 CHECK_EQ("1B667A56D488000", buffer);
722
723 AssignDecimalString(&bignum, "1234");
724 bignum.MultiplyByPowerOfTen(15);
725 CHECK(bignum.ToHexString(buffer, kBufferSize));
726 CHECK_EQ("11200C7644D50000", buffer);
727
728 AssignDecimalString(&bignum, "1234");
729 bignum.MultiplyByPowerOfTen(16);
730 CHECK(bignum.ToHexString(buffer, kBufferSize));
731 CHECK_EQ("AB407C9EB0520000", buffer);
732
733 AssignDecimalString(&bignum, "1234");
734 bignum.MultiplyByPowerOfTen(17);
735 CHECK(bignum.ToHexString(buffer, kBufferSize));
736 CHECK_EQ("6B084DE32E3340000", buffer);
737
738 AssignDecimalString(&bignum, "1234");
739 bignum.MultiplyByPowerOfTen(18);
740 CHECK(bignum.ToHexString(buffer, kBufferSize));
741 CHECK_EQ("42E530ADFCE0080000", buffer);
742
743 AssignDecimalString(&bignum, "1234");
744 bignum.MultiplyByPowerOfTen(19);
745 CHECK(bignum.ToHexString(buffer, kBufferSize));
746 CHECK_EQ("29CF3E6CBE0C0500000", buffer);
747
748 AssignDecimalString(&bignum, "1234");
749 bignum.MultiplyByPowerOfTen(20);
750 CHECK(bignum.ToHexString(buffer, kBufferSize));
751 CHECK_EQ("1A218703F6C783200000", buffer);
752
753 AssignDecimalString(&bignum, "1234");
754 bignum.MultiplyByPowerOfTen(21);
755 CHECK(bignum.ToHexString(buffer, kBufferSize));
756 CHECK_EQ("1054F4627A3CB1F400000", buffer);
757
758 AssignDecimalString(&bignum, "1234");
759 bignum.MultiplyByPowerOfTen(22);
760 CHECK(bignum.ToHexString(buffer, kBufferSize));
761 CHECK_EQ("A3518BD8C65EF38800000", buffer);
762
763 AssignDecimalString(&bignum, "1234");
764 bignum.MultiplyByPowerOfTen(23);
765 CHECK(bignum.ToHexString(buffer, kBufferSize));
766 CHECK_EQ("6612F7677BFB5835000000", buffer);
767
768 AssignDecimalString(&bignum, "1234");
769 bignum.MultiplyByPowerOfTen(24);
770 CHECK(bignum.ToHexString(buffer, kBufferSize));
771 CHECK_EQ("3FCBDAA0AD7D17212000000", buffer);
772
773 AssignDecimalString(&bignum, "1234");
774 bignum.MultiplyByPowerOfTen(25);
775 CHECK(bignum.ToHexString(buffer, kBufferSize));
776 CHECK_EQ("27DF68A46C6E2E74B4000000", buffer);
777
778 AssignDecimalString(&bignum, "1234");
779 bignum.MultiplyByPowerOfTen(26);
780 CHECK(bignum.ToHexString(buffer, kBufferSize));
781 CHECK_EQ("18EBA166C3C4DD08F08000000", buffer);
782
783 AssignDecimalString(&bignum, "1234");
784 bignum.MultiplyByPowerOfTen(27);
785 CHECK(bignum.ToHexString(buffer, kBufferSize));
786 CHECK_EQ("F9344E03A5B0A259650000000", buffer);
787
788 AssignDecimalString(&bignum, "1234");
789 bignum.MultiplyByPowerOfTen(28);
790 CHECK(bignum.ToHexString(buffer, kBufferSize));
791 CHECK_EQ("9BC0B0C2478E6577DF20000000", buffer);
792
793 AssignDecimalString(&bignum, "1234");
794 bignum.MultiplyByPowerOfTen(29);
795 CHECK(bignum.ToHexString(buffer, kBufferSize));
796 CHECK_EQ("61586E796CB8FF6AEB740000000", buffer);
797
798 AssignDecimalString(&bignum, "1234");
799 bignum.MultiplyByPowerOfTen(30);
800 CHECK(bignum.ToHexString(buffer, kBufferSize));
801 CHECK_EQ("3CD7450BE3F39FA2D32880000000", buffer);
802
803 AssignDecimalString(&bignum, "1234");
804 bignum.MultiplyByPowerOfTen(31);
805 CHECK(bignum.ToHexString(buffer, kBufferSize));
806 CHECK_EQ("26068B276E7843C5C3F9500000000", buffer);
807
808 AssignDecimalString(&bignum, "1234");
809 bignum.MultiplyByPowerOfTen(50);
810 CHECK(bignum.ToHexString(buffer, kBufferSize));
811 CHECK_EQ("149D1B4CFED03B23AB5F4E1196EF45C08000000000000", buffer);
812
813 AssignDecimalString(&bignum, "1234");
814 bignum.MultiplyByPowerOfTen(100);
815 CHECK(bignum.ToHexString(buffer, kBufferSize));
816 CHECK_EQ("5827249F27165024FBC47DFCA9359BF316332D1B91ACEECF471FBAB06D9B2"
817 "0000000000000000000000000", buffer);
818
819 AssignDecimalString(&bignum, "1234");
820 bignum.MultiplyByPowerOfTen(200);
821 CHECK(bignum.ToHexString(buffer, kBufferSize));
822 CHECK_EQ("64C1F5C06C3816AFBF8DAFD5A3D756365BB0FD020E6F084E759C1F7C99E4F"
823 "55B9ACC667CEC477EB958C2AEEB3C6C19BA35A1AD30B35C51EB72040920000"
824 "0000000000000000000000000000000000000000000000", buffer);
825
826 AssignDecimalString(&bignum, "1234");
827 bignum.MultiplyByPowerOfTen(500);
828 CHECK(bignum.ToHexString(buffer, kBufferSize));
829 CHECK_EQ("96741A625EB5D7C91039FEB5C5ACD6D9831EDA5B083D800E6019442C8C8223"
830 "3EAFB3501FE2058062221E15121334928880827DEE1EC337A8B26489F3A40A"
831 "CB440A2423734472D10BFCE886F41B3AF9F9503013D86D088929CA86EEB4D8"
832 "B9C831D0BD53327B994A0326227CFD0ECBF2EB48B02387AAE2D4CCCDF1F1A1"
833 "B8CC4F1FA2C56AD40D0E4DAA9C28CDBF0A549098EA13200000000000000000"
834 "00000000000000000000000000000000000000000000000000000000000000"
835 "0000000000000000000000000000000000000000000000", buffer);
836
837 AssignDecimalString(&bignum, "1234");
838 bignum.MultiplyByPowerOfTen(1000);
839 CHECK(bignum.ToHexString(buffer, kBufferSize));
840 CHECK_EQ("1258040F99B1CD1CC9819C676D413EA50E4A6A8F114BB0C65418C62D399B81"
841 "6361466CA8E095193E1EE97173553597C96673AF67FAFE27A66E7EF2E5EF2E"
842 "E3F5F5070CC17FE83BA53D40A66A666A02F9E00B0E11328D2224B8694C7372"
843 "F3D536A0AD1985911BD361496F268E8B23112500EAF9B88A9BC67B2AB04D38"
844 "7FEFACD00F5AF4F764F9ABC3ABCDE54612DE38CD90CB6647CA389EA0E86B16"
845 "BF7A1F34086E05ADBE00BD1673BE00FAC4B34AF1091E8AD50BA675E0381440"
846 "EA8E9D93E75D816BAB37C9844B1441C38FC65CF30ABB71B36433AF26DD97BD"
847 "ABBA96C03B4919B8F3515B92826B85462833380DC193D79F69D20DD6038C99"
848 "6114EF6C446F0BA28CC772ACBA58B81C04F8FFDE7B18C4E5A3ABC51E637FDF"
849 "6E37FDFF04C940919390F4FF92000000000000000000000000000000000000"
850 "00000000000000000000000000000000000000000000000000000000000000"
851 "00000000000000000000000000000000000000000000000000000000000000"
852 "00000000000000000000000000000000000000000000000000000000000000"
853 "0000000000000000000000000000", buffer);
854
855 Bignum bignum2;
856 AssignHexString(&bignum2, "3DA774C07FB5DF54284D09C675A492165B830D5DAAEB2A7501"
857 "DA17CF9DFA1CA2282269F92A25A97314296B717E3DCBB9FE17"
858 "41A842FE2913F540F40796F2381155763502C58B15AF7A7F88"
859 "6F744C9164FF409A28F7FA0C41F89ED79C1BE9F322C8578B97"
860 "841F1CBAA17D901BE1230E3C00E1C643AF32638B5674E01FEA"
861 "96FC90864E621B856A9E1CE56E6EB545B9C2F8F0CC10DDA88D"
862 "CC6D282605F8DB67044F2DFD3695E7BA63877AE16701536AE6"
863 "567C794D0BFE338DFBB42D92D4215AF3BB22BF0A8B283FDDC2"
864 "C667A10958EA6D2");
865 CHECK(bignum2.ToHexString(buffer, kBufferSize));
866 CHECK_EQ("3DA774C07FB5DF54284D09C675A492165B830D5DAAEB2A7501"
867 "DA17CF9DFA1CA2282269F92A25A97314296B717E3DCBB9FE17"
868 "41A842FE2913F540F40796F2381155763502C58B15AF7A7F88"
869 "6F744C9164FF409A28F7FA0C41F89ED79C1BE9F322C8578B97"
870 "841F1CBAA17D901BE1230E3C00E1C643AF32638B5674E01FEA"
871 "96FC90864E621B856A9E1CE56E6EB545B9C2F8F0CC10DDA88D"
872 "CC6D282605F8DB67044F2DFD3695E7BA63877AE16701536AE6"
873 "567C794D0BFE338DFBB42D92D4215AF3BB22BF0A8B283FDDC2"
874 "C667A10958EA6D2", buffer);
875
876 bignum.AssignBignum(bignum2);
877 bignum.MultiplyByPowerOfTen(1);
878 CHECK(bignum.ToHexString(buffer, kBufferSize));
879 CHECK_EQ("2688A8F84FD1AB949930261C0986DB4DF931E85A8AD2FA8921284EE1C2BC51"
880 "E55915823BBA5789E7EC99E326EEE69F543ECE890929DED9AC79489884BE57"
881 "630AD569E121BB76ED8DAC8FB545A8AFDADF1F8860599AFC47A93B6346C191"
882 "7237F5BD36B73EB29371F4A4EE7A116CB5E8E5808D1BEA4D7F7E3716090C13"
883 "F29E5DDA53F0FD513362A2D20F6505314B9419DB967F8A8A89589FC43917C3"
884 "BB892062B17CBE421DB0D47E34ACCCE060D422CFF60DCBD0277EE038BD509C"
885 "7BC494D8D854F5B76696F927EA99BC00C4A5D7928434", buffer);
886
887 bignum.AssignBignum(bignum2);
888 bignum.MultiplyByPowerOfTen(2);
889 CHECK(bignum.ToHexString(buffer, kBufferSize));
890 CHECK_EQ("1815699B31E30B3CDFBE17D185F44910BBBF313896C3DC95B4B9314D19B5B32"
891 "F57AD71655476B630F3E02DF855502394A74115A5BA2B480BCBCD5F52F6F69D"
892 "E6C5622CB5152A54788BD9D14B896DE8CB73B53C3800DDACC9C51E0C38FAE76"
893 "2F9964232872F9C2738E7150C4AE3F1B18F70583172706FAEE26DC5A78C77A2"
894 "FAA874769E52C01DA5C3499F233ECF3C90293E0FB69695D763DAA3AEDA5535B"
895 "43DAEEDF6E9528E84CEE0EC000C3C8495C1F9C89F6218AF4C23765261CD5ADD"
896 "0787351992A01E5BB8F2A015807AE7A6BB92A08", buffer);
897
898 bignum.AssignBignum(bignum2);
899 bignum.MultiplyByPowerOfTen(5);
900 CHECK(bignum.ToHexString(buffer, kBufferSize));
901 CHECK_EQ("5E13A4863ADEE3E5C9FE8D0A73423D695D62D8450CED15A8C9F368952C6DC3"
902 "F0EE7D82F3D1EFB7AF38A3B3920D410AFCAD563C8F5F39116E141A3C5C14B3"
903 "58CD73077EA35AAD59F6E24AD98F10D5555ABBFBF33AC361EAF429FD5FBE94"
904 "17DA9EF2F2956011F9F93646AA38048A681D984ED88127073443247CCC167C"
905 "B354A32206EF5A733E73CF82D795A1AD598493211A6D613C39515E0E0F6304"
906 "DCD9C810F3518C7F6A7CB6C81E99E02FCC65E8FDB7B7AE97306CC16A8631CE"
907 "0A2AEF6568276BE4C176964A73C153FDE018E34CB4C2F40", buffer);
908
909 bignum.AssignBignum(bignum2);
910 bignum.MultiplyByPowerOfTen(10);
911 CHECK(bignum.ToHexString(buffer, kBufferSize));
912 CHECK_EQ("8F8CB8EB51945A7E815809F6121EF2F4E61EF3405CD9432CAD2709749EEAFD"
913 "1B81E843F14A3667A7BDCCC9E0BB795F63CDFDB62844AC7438976C885A0116"
914 "29607DA54F9C023CC366570B7637ED0F855D931752038A614922D0923E382C"
915 "B8E5F6C975672DB76E0DE471937BB9EDB11E28874F1C122D5E1EF38CECE9D0"
916 "0723056BCBD4F964192B76830634B1D322B7EB0062F3267E84F5C824343A77"
917 "4B7DCEE6DD464F01EBDC8C671BB18BB4EF4300A42474A6C77243F2A12B03BF"
918 "0443C38A1C0D2701EDB393135AE0DEC94211F9D4EB51F990800", buffer);
919
920 bignum.AssignBignum(bignum2);
921 bignum.MultiplyByPowerOfTen(50);
922 CHECK(bignum.ToHexString(buffer, kBufferSize));
923 CHECK_EQ("107A8BE345E24407372FC1DE442CBA696BC23C4FFD5B4BDFD9E5C39559815"
924 "86628CF8472D2D589F2FC2BAD6E0816EC72CBF85CCA663D8A1EC6C51076D8"
925 "2D247E6C26811B7EC4D4300FB1F91028DCB7B2C4E7A60C151161AA7E65E79"
926 "B40917B12B2B5FBE7745984D4E8EFA31F9AE6062427B068B144A9CB155873"
927 "E7C0C9F0115E5AC72DC5A73C4796DB970BF9205AB8C77A6996EB1B417F9D1"
928 "6232431E6313C392203601B9C22CC10DDA88DCC6D282605F8DB67044F2DFD"
929 "3695E7BA63877AE16701536AE6567C794D0BFE338DFBB42D924CF964BD2C0"
930 "F586E03A2FCD35A408000000000000", buffer);
931
932 bignum.AssignBignum(bignum2);
933 bignum.MultiplyByPowerOfTen(100);
934 CHECK(bignum.ToHexString(buffer, kBufferSize));
935 CHECK_EQ("46784A90ACD0ED3E7759CC585FB32D36EB6034A6F78D92604E3BAA5ED3D8B"
936 "6E60E854439BE448897FB4B7EA5A3D873AA0FCB3CFFD80D0530880E45F511"
937 "722A50CE7E058B5A6F5464DB7500E34984EE3202A9441F44FA1554C0CEA96"
938 "B438A36F25E7C9D56D71AE2CD313EC37534DA299AC0854FC48591A7CF3171"
939 "31265AA4AE62DE32344CE7BEEEF894AE686A2DAAFE5D6D9A10971FFD9C064"
940 "5079B209E1048F58B5192D41D84336AC4C8C489EEF00939CFC9D55C122036"
941 "01B9C22CC10DDA88DCC6D282605F8DB67044F2DFD3695E7BA3F67B96D3A32"
942 "E11FB5561B68744C4035B0800DC166D49D98E3FD1D5BB2000000000000000"
943 "0000000000", buffer);
944
945 bignum.AssignBignum(bignum2);
946 bignum.MultiplyByPowerOfTen(200);
947 CHECK(bignum.ToHexString(buffer, kBufferSize));
948 CHECK_EQ("508BD351221DF139D72D88CDC0416845A53EE2D0E6B98352509A9AC312F8C"
949 "6CB1A144889416201E0B6CE66EA3EBE259B5FD79ECFC1FD77963CE516CC7E"
950 "2FE73D4B5B710C19F6BCB092C7A2FD76286543B8DBD2C596DFF2C896720BA"
951 "DFF7BC9C366ACEA3A880AEC287C5E6207DF2739B5326FC19D773BD830B109"
952 "ED36C7086544BF8FDB9D4B73719C2B5BC2F571A5937EC46876CD428281F6B"
953 "F287E1E07F25C1B1D46BC37324FF657A8B2E0071DB83B86123CA34004F406"
954 "001082D7945E90C6E8C9A9FEC2B44BE0DDA46E9F52B152E4D1336D2FCFBC9"
955 "96E30CA0082256737365158FE36482AA7EB9DAF2AB128F10E7551A3CD5BE6"
956 "0A922F3A7D5EED38B634A7EC95BCF7021BA6820A292000000000000000000"
957 "00000000000000000000000000000000", buffer);
958
959 bignum.AssignBignum(bignum2);
960 bignum.MultiplyByPowerOfTen(500);
961 CHECK(bignum.ToHexString(buffer, kBufferSize));
962 CHECK_EQ("7845F900E475B5086885BAAAE67C8E85185ACFE4633727F82A4B06B5582AC"
963 "BE933C53357DA0C98C20C5AC900C4D76A97247DF52B79F48F9E35840FB715"
964 "D392CE303E22622B0CF82D9471B398457DD3196F639CEE8BBD2C146873841"
965 "F0699E6C41F04FC7A54B48CEB995BEB6F50FE81DE9D87A8D7F849CC523553"
966 "7B7BBBC1C7CAAFF6E9650BE03B308C6D31012AEF9580F70D3EE2083ADE126"
967 "8940FA7D6308E239775DFD2F8C97FF7EBD525DAFA6512216F7047A62A93DC"
968 "38A0165BDC67E250DCC96A0181DE935A70B38704DC71819F02FC5261FF7E1"
969 "E5F11907678B0A3E519FF4C10A867B0C26CE02BE6960BA8621A87303C101C"
970 "3F88798BB9F7739655946F8B5744E6B1EAF10B0C5621330F0079209033C69"
971 "20DE2E2C8D324F0624463735D482BF291926C22A910F5B80FA25170B6B57D"
972 "8D5928C7BCA3FE87461275F69BD5A1B83181DAAF43E05FC3C72C4E93111B6"
973 "6205EBF49B28FEDFB7E7526CBDA658A332000000000000000000000000000"
974 "0000000000000000000000000000000000000000000000000000000000000"
975 "0000000000000000000000000000000000000", buffer);
976}
977
978
979TEST(DivideModuloIntBignum) {
980 char buffer[kBufferSize];
981 Bignum bignum;
982 Bignum other;
983 Bignum third;
984
985 bignum.AssignUInt16(10);
986 other.AssignUInt16(2);
987 CHECK_EQ(5, bignum.DivideModuloIntBignum(other));
988 CHECK(bignum.ToHexString(buffer, kBufferSize));
989 CHECK_EQ("0", buffer);
990
991 bignum.AssignUInt16(10);
992 bignum.ShiftLeft(500);
993 other.AssignUInt16(2);
994 other.ShiftLeft(500);
995 CHECK_EQ(5, bignum.DivideModuloIntBignum(other));
996 CHECK_EQ("0", buffer);
997
998 bignum.AssignUInt16(11);
999 other.AssignUInt16(2);
1000 CHECK_EQ(5, bignum.DivideModuloIntBignum(other));
1001 CHECK(bignum.ToHexString(buffer, kBufferSize));
1002 CHECK_EQ("1", buffer);
1003
1004 bignum.AssignUInt16(10);
1005 bignum.ShiftLeft(500);
1006 other.AssignUInt16(1);
1007 bignum.AddBignum(other);
1008 other.AssignUInt16(2);
1009 other.ShiftLeft(500);
1010 CHECK_EQ(5, bignum.DivideModuloIntBignum(other));
1011 CHECK(bignum.ToHexString(buffer, kBufferSize));
1012 CHECK_EQ("1", buffer);
1013
1014 bignum.AssignUInt16(10);
1015 bignum.ShiftLeft(500);
1016 other.AssignBignum(bignum);
1017 bignum.MultiplyByUInt32(0x1234);
1018 third.AssignUInt16(0xFFF);
1019 bignum.AddBignum(third);
1020 CHECK_EQ(0x1234, bignum.DivideModuloIntBignum(other));
1021 CHECK(bignum.ToHexString(buffer, kBufferSize));
1022 CHECK_EQ("FFF", buffer);
1023
1024 bignum.AssignUInt16(10);
1025 AssignHexString(&other, "1234567890");
1026 CHECK_EQ(0, bignum.DivideModuloIntBignum(other));
1027 CHECK(bignum.ToHexString(buffer, kBufferSize));
1028 CHECK_EQ("A", buffer);
1029
1030 AssignHexString(&bignum, "12345678");
1031 AssignHexString(&other, "3789012");
1032 CHECK_EQ(5, bignum.DivideModuloIntBignum(other));
1033 CHECK(bignum.ToHexString(buffer, kBufferSize));
1034 CHECK_EQ("D9861E", buffer);
1035
1036 AssignHexString(&bignum, "70000001");
1037 AssignHexString(&other, "1FFFFFFF");
1038 CHECK_EQ(3, bignum.DivideModuloIntBignum(other));
1039 CHECK(bignum.ToHexString(buffer, kBufferSize));
1040 CHECK_EQ("10000004", buffer);
1041
1042 AssignHexString(&bignum, "28000000");
1043 AssignHexString(&other, "12A05F20");
1044 CHECK_EQ(2, bignum.DivideModuloIntBignum(other));
1045 CHECK(bignum.ToHexString(buffer, kBufferSize));
1046 CHECK_EQ("2BF41C0", buffer);
1047
1048 bignum.AssignUInt16(10);
1049 bignum.ShiftLeft(500);
1050 other.AssignBignum(bignum);
1051 bignum.MultiplyByUInt32(0x1234);
1052 third.AssignUInt16(0xFFF);
1053 other.SubtractBignum(third);
1054 CHECK_EQ(0x1234, bignum.DivideModuloIntBignum(other));
1055 CHECK(bignum.ToHexString(buffer, kBufferSize));
1056 CHECK_EQ("1232DCC", buffer);
1057 CHECK_EQ(0, bignum.DivideModuloIntBignum(other));
1058 CHECK(bignum.ToHexString(buffer, kBufferSize));
1059 CHECK_EQ("1232DCC", buffer);
1060}
1061
1062
1063TEST(Compare) {
1064 Bignum bignum1;
1065 Bignum bignum2;
1066 bignum1.AssignUInt16(1);
1067 bignum2.AssignUInt16(1);
1068 CHECK_EQ(0, Bignum::Compare(bignum1, bignum2));
1069 CHECK(Bignum::Equal(bignum1, bignum2));
1070 CHECK(Bignum::LessEqual(bignum1, bignum2));
1071 CHECK(!Bignum::Less(bignum1, bignum2));
1072
1073 bignum1.AssignUInt16(0);
1074 bignum2.AssignUInt16(1);
1075 CHECK_EQ(-1, Bignum::Compare(bignum1, bignum2));
1076 CHECK_EQ(+1, Bignum::Compare(bignum2, bignum1));
1077 CHECK(!Bignum::Equal(bignum1, bignum2));
1078 CHECK(!Bignum::Equal(bignum2, bignum1));
1079 CHECK(Bignum::LessEqual(bignum1, bignum2));
1080 CHECK(!Bignum::LessEqual(bignum2, bignum1));
1081 CHECK(Bignum::Less(bignum1, bignum2));
1082 CHECK(!Bignum::Less(bignum2, bignum1));
1083
1084 AssignHexString(&bignum1, "1234567890ABCDEF12345");
1085 AssignHexString(&bignum2, "1234567890ABCDEF12345");
1086 CHECK_EQ(0, Bignum::Compare(bignum1, bignum2));
1087
1088 AssignHexString(&bignum1, "1234567890ABCDEF12345");
1089 AssignHexString(&bignum2, "1234567890ABCDEF12346");
1090 CHECK_EQ(-1, Bignum::Compare(bignum1, bignum2));
1091 CHECK_EQ(+1, Bignum::Compare(bignum2, bignum1));
1092
1093 AssignHexString(&bignum1, "1234567890ABCDEF12345");
1094 bignum1.ShiftLeft(500);
1095 AssignHexString(&bignum2, "1234567890ABCDEF12345");
1096 bignum2.ShiftLeft(500);
1097 CHECK_EQ(0, Bignum::Compare(bignum1, bignum2));
1098
1099 AssignHexString(&bignum1, "1234567890ABCDEF12345");
1100 bignum1.ShiftLeft(500);
1101 AssignHexString(&bignum2, "1234567890ABCDEF12346");
1102 bignum2.ShiftLeft(500);
1103 CHECK_EQ(-1, Bignum::Compare(bignum1, bignum2));
1104 CHECK_EQ(+1, Bignum::Compare(bignum2, bignum1));
1105
1106 bignum1.AssignUInt16(1);
1107 bignum1.ShiftLeft(64);
1108 AssignHexString(&bignum2, "10000000000000000");
1109 CHECK_EQ(0, Bignum::Compare(bignum1, bignum2));
1110 CHECK_EQ(0, Bignum::Compare(bignum2, bignum1));
1111
1112 bignum1.AssignUInt16(1);
1113 bignum1.ShiftLeft(64);
1114 AssignHexString(&bignum2, "10000000000000001");
1115 CHECK_EQ(-1, Bignum::Compare(bignum1, bignum2));
1116 CHECK_EQ(+1, Bignum::Compare(bignum2, bignum1));
1117
1118 bignum1.AssignUInt16(1);
1119 bignum1.ShiftLeft(96);
1120 AssignHexString(&bignum2, "10000000000000001");
1121 bignum2.ShiftLeft(32);
1122 CHECK_EQ(-1, Bignum::Compare(bignum1, bignum2));
1123 CHECK_EQ(+1, Bignum::Compare(bignum2, bignum1));
1124
1125 AssignHexString(&bignum1, "FFFFFFFFFFFFFFFF");
1126 bignum2.AssignUInt16(1);
1127 bignum2.ShiftLeft(64);
1128 CHECK_EQ(-1, Bignum::Compare(bignum1, bignum2));
1129 CHECK_EQ(+1, Bignum::Compare(bignum2, bignum1));
1130
1131 AssignHexString(&bignum1, "FFFFFFFFFFFFFFFF");
1132 bignum1.ShiftLeft(32);
1133 bignum2.AssignUInt16(1);
1134 bignum2.ShiftLeft(96);
1135 CHECK_EQ(-1, Bignum::Compare(bignum1, bignum2));
1136 CHECK_EQ(+1, Bignum::Compare(bignum2, bignum1));
1137
1138 AssignHexString(&bignum1, "FFFFFFFFFFFFFFFF");
1139 bignum1.ShiftLeft(32);
1140 bignum2.AssignUInt16(1);
1141 bignum2.ShiftLeft(95);
1142 CHECK_EQ(+1, Bignum::Compare(bignum1, bignum2));
1143 CHECK_EQ(-1, Bignum::Compare(bignum2, bignum1));
1144
1145 AssignHexString(&bignum1, "FFFFFFFFFFFFFFFF");
1146 bignum1.ShiftLeft(32);
1147 bignum2.AssignUInt16(1);
1148 bignum2.ShiftLeft(100);
1149 CHECK_EQ(-1, Bignum::Compare(bignum1, bignum2));
1150 CHECK_EQ(+1, Bignum::Compare(bignum2, bignum1));
1151
1152 AssignHexString(&bignum1, "100000000000000");
1153 bignum2.AssignUInt16(1);
1154 bignum2.ShiftLeft(14*4);
1155 CHECK_EQ(0, Bignum::Compare(bignum1, bignum2));
1156 CHECK_EQ(0, Bignum::Compare(bignum2, bignum1));
1157
1158 AssignHexString(&bignum1, "100000000000001");
1159 bignum2.AssignUInt16(1);
1160 bignum2.ShiftLeft(14*4);
1161 CHECK_EQ(+1, Bignum::Compare(bignum1, bignum2));
1162 CHECK_EQ(-1, Bignum::Compare(bignum2, bignum1));
1163
1164 AssignHexString(&bignum1, "200000000000000");
1165 bignum2.AssignUInt16(3);
1166 bignum2.ShiftLeft(14*4);
1167 CHECK_EQ(-1, Bignum::Compare(bignum1, bignum2));
1168 CHECK_EQ(+1, Bignum::Compare(bignum2, bignum1));
1169}
1170
1171
1172TEST(PlusCompare) {
1173 Bignum a;
1174 Bignum b;
1175 Bignum c;
1176 a.AssignUInt16(1);
1177 b.AssignUInt16(0);
1178 c.AssignUInt16(1);
1179 CHECK_EQ(0, Bignum::PlusCompare(a, b, c));
1180 CHECK(Bignum::PlusEqual(a, b, c));
1181 CHECK(Bignum::PlusLessEqual(a, b, c));
1182 CHECK(!Bignum::PlusLess(a, b, c));
1183
1184 a.AssignUInt16(0);
1185 b.AssignUInt16(0);
1186 c.AssignUInt16(1);
1187 CHECK_EQ(-1, Bignum::PlusCompare(a, b, c));
1188 CHECK_EQ(+1, Bignum::PlusCompare(c, b, a));
1189 CHECK(!Bignum::PlusEqual(a, b, c));
1190 CHECK(!Bignum::PlusEqual(c, b, a));
1191 CHECK(Bignum::PlusLessEqual(a, b, c));
1192 CHECK(!Bignum::PlusLessEqual(c, b, a));
1193 CHECK(Bignum::PlusLess(a, b, c));
1194 CHECK(!Bignum::PlusLess(c, b, a));
1195
1196 AssignHexString(&a, "1234567890ABCDEF12345");
1197 b.AssignUInt16(1);
1198 AssignHexString(&c, "1234567890ABCDEF12345");
1199 CHECK_EQ(+1, Bignum::PlusCompare(a, b, c));
1200
1201 AssignHexString(&a, "1234567890ABCDEF12344");
1202 b.AssignUInt16(1);
1203 AssignHexString(&c, "1234567890ABCDEF12345");
1204 CHECK_EQ(0, Bignum::PlusCompare(a, b, c));
1205
1206 AssignHexString(&a, "1234567890");
1207 a.ShiftLeft(11*4);
1208 AssignHexString(&b, "ABCDEF12345");
1209 AssignHexString(&c, "1234567890ABCDEF12345");
1210 CHECK_EQ(0, Bignum::PlusCompare(a, b, c));
1211
1212 AssignHexString(&a, "1234567890");
1213 a.ShiftLeft(11*4);
1214 AssignHexString(&b, "ABCDEF12344");
1215 AssignHexString(&c, "1234567890ABCDEF12345");
1216 CHECK_EQ(-1, Bignum::PlusCompare(a, b, c));
1217
1218 AssignHexString(&a, "1234567890");
1219 a.ShiftLeft(11*4);
1220 AssignHexString(&b, "ABCDEF12346");
1221 AssignHexString(&c, "1234567890ABCDEF12345");
1222 CHECK_EQ(1, Bignum::PlusCompare(a, b, c));
1223
1224 AssignHexString(&a, "1234567891");
1225 a.ShiftLeft(11*4);
1226 AssignHexString(&b, "ABCDEF12345");
1227 AssignHexString(&c, "1234567890ABCDEF12345");
1228 CHECK_EQ(1, Bignum::PlusCompare(a, b, c));
1229
1230 AssignHexString(&a, "1234567889");
1231 a.ShiftLeft(11*4);
1232 AssignHexString(&b, "ABCDEF12345");
1233 AssignHexString(&c, "1234567890ABCDEF12345");
1234 CHECK_EQ(-1, Bignum::PlusCompare(a, b, c));
1235
1236 AssignHexString(&a, "1234567890");
1237 a.ShiftLeft(11*4 + 32);
1238 AssignHexString(&b, "ABCDEF12345");
1239 b.ShiftLeft(32);
1240 AssignHexString(&c, "1234567890ABCDEF12345");
1241 c.ShiftLeft(32);
1242 CHECK_EQ(0, Bignum::PlusCompare(a, b, c));
1243
1244 AssignHexString(&a, "1234567890");
1245 a.ShiftLeft(11*4 + 32);
1246 AssignHexString(&b, "ABCDEF12344");
1247 b.ShiftLeft(32);
1248 AssignHexString(&c, "1234567890ABCDEF12345");
1249 c.ShiftLeft(32);
1250 CHECK_EQ(-1, Bignum::PlusCompare(a, b, c));
1251
1252 AssignHexString(&a, "1234567890");
1253 a.ShiftLeft(11*4 + 32);
1254 AssignHexString(&b, "ABCDEF12346");
1255 b.ShiftLeft(32);
1256 AssignHexString(&c, "1234567890ABCDEF12345");
1257 c.ShiftLeft(32);
1258 CHECK_EQ(1, Bignum::PlusCompare(a, b, c));
1259
1260 AssignHexString(&a, "1234567891");
1261 a.ShiftLeft(11*4 + 32);
1262 AssignHexString(&b, "ABCDEF12345");
1263 b.ShiftLeft(32);
1264 AssignHexString(&c, "1234567890ABCDEF12345");
1265 c.ShiftLeft(32);
1266 CHECK_EQ(1, Bignum::PlusCompare(a, b, c));
1267
1268 AssignHexString(&a, "1234567889");
1269 a.ShiftLeft(11*4 + 32);
1270 AssignHexString(&b, "ABCDEF12345");
1271 b.ShiftLeft(32);
1272 AssignHexString(&c, "1234567890ABCDEF12345");
1273 c.ShiftLeft(32);
1274 CHECK_EQ(-1, Bignum::PlusCompare(a, b, c));
1275
1276 AssignHexString(&a, "1234567890");
1277 a.ShiftLeft(11*4 + 32);
1278 AssignHexString(&b, "ABCDEF12345");
1279 b.ShiftLeft(32);
1280 AssignHexString(&c, "1234567890ABCDEF1234500000000");
1281 CHECK_EQ(0, Bignum::PlusCompare(a, b, c));
1282
1283 AssignHexString(&a, "1234567890");
1284 a.ShiftLeft(11*4 + 32);
1285 AssignHexString(&b, "ABCDEF12344");
1286 b.ShiftLeft(32);
1287 AssignHexString(&c, "1234567890ABCDEF1234500000000");
1288 CHECK_EQ(-1, Bignum::PlusCompare(a, b, c));
1289
1290 AssignHexString(&a, "1234567890");
1291 a.ShiftLeft(11*4 + 32);
1292 AssignHexString(&b, "ABCDEF12346");
1293 b.ShiftLeft(32);
1294 AssignHexString(&c, "1234567890ABCDEF1234500000000");
1295 CHECK_EQ(1, Bignum::PlusCompare(a, b, c));
1296
1297 AssignHexString(&a, "1234567891");
1298 a.ShiftLeft(11*4 + 32);
1299 AssignHexString(&b, "ABCDEF12345");
1300 b.ShiftLeft(32);
1301 AssignHexString(&c, "1234567890ABCDEF1234500000000");
1302 CHECK_EQ(1, Bignum::PlusCompare(a, b, c));
1303
1304 AssignHexString(&a, "1234567889");
1305 a.ShiftLeft(11*4 + 32);
1306 AssignHexString(&b, "ABCDEF12345");
1307 b.ShiftLeft(32);
1308 AssignHexString(&c, "1234567890ABCDEF1234500000000");
1309 CHECK_EQ(-1, Bignum::PlusCompare(a, b, c));
1310
1311 AssignHexString(&a, "1234567890");
1312 a.ShiftLeft(11*4 + 32);
1313 AssignHexString(&b, "ABCDEF12345");
1314 AssignHexString(&c, "123456789000000000ABCDEF12345");
1315 CHECK_EQ(0, Bignum::PlusCompare(a, b, c));
1316
1317 AssignHexString(&a, "1234567890");
1318 a.ShiftLeft(11*4 + 32);
1319 AssignHexString(&b, "ABCDEF12346");
1320 AssignHexString(&c, "123456789000000000ABCDEF12345");
1321 CHECK_EQ(1, Bignum::PlusCompare(a, b, c));
1322
1323 AssignHexString(&a, "1234567890");
1324 a.ShiftLeft(11*4 + 32);
1325 AssignHexString(&b, "ABCDEF12344");
1326 AssignHexString(&c, "123456789000000000ABCDEF12345");
1327 CHECK_EQ(-1, Bignum::PlusCompare(a, b, c));
1328
1329 AssignHexString(&a, "1234567890");
1330 a.ShiftLeft(11*4 + 32);
1331 AssignHexString(&b, "ABCDEF12345");
1332 b.ShiftLeft(16);
1333 AssignHexString(&c, "12345678900000ABCDEF123450000");
1334 CHECK_EQ(0, Bignum::PlusCompare(a, b, c));
1335
1336 AssignHexString(&a, "1234567890");
1337 a.ShiftLeft(11*4 + 32);
1338 AssignHexString(&b, "ABCDEF12344");
1339 b.ShiftLeft(16);
1340 AssignHexString(&c, "12345678900000ABCDEF123450000");
1341 CHECK_EQ(-1, Bignum::PlusCompare(a, b, c));
1342
1343 AssignHexString(&a, "1234567890");
1344 a.ShiftLeft(11*4 + 32);
1345 AssignHexString(&b, "ABCDEF12345");
1346 b.ShiftLeft(16);
1347 AssignHexString(&c, "12345678900000ABCDEF123450001");
1348 CHECK_EQ(-1, Bignum::PlusCompare(a, b, c));
1349
1350 AssignHexString(&a, "1234567890");
1351 a.ShiftLeft(11*4 + 32);
1352 AssignHexString(&b, "ABCDEF12346");
1353 b.ShiftLeft(16);
1354 AssignHexString(&c, "12345678900000ABCDEF123450000");
1355 CHECK_EQ(+1, Bignum::PlusCompare(a, b, c));
1356}
1357
1358
1359TEST(Square) {
1360 Bignum bignum;
1361 char buffer[kBufferSize];
1362
1363 bignum.AssignUInt16(1);
1364 bignum.Square();
1365 CHECK(bignum.ToHexString(buffer, kBufferSize));
1366 CHECK_EQ("1", buffer);
1367
1368 bignum.AssignUInt16(2);
1369 bignum.Square();
1370 CHECK(bignum.ToHexString(buffer, kBufferSize));
1371 CHECK_EQ("4", buffer);
1372
1373 bignum.AssignUInt16(10);
1374 bignum.Square();
1375 CHECK(bignum.ToHexString(buffer, kBufferSize));
1376 CHECK_EQ("64", buffer);
1377
1378 AssignHexString(&bignum, "FFFFFFF");
1379 bignum.Square();
1380 CHECK(bignum.ToHexString(buffer, kBufferSize));
1381 CHECK_EQ("FFFFFFE0000001", buffer);
1382
1383 AssignHexString(&bignum, "FFFFFFFFFFFFFF");
1384 bignum.Square();
1385 CHECK(bignum.ToHexString(buffer, kBufferSize));
1386 CHECK_EQ("FFFFFFFFFFFFFE00000000000001", buffer);
1387}
1388
1389
1390TEST(AssignPowerUInt16) {
1391 Bignum bignum;
1392 char buffer[kBufferSize];
1393
1394 bignum.AssignPowerUInt16(1, 0);
1395 CHECK(bignum.ToHexString(buffer, kBufferSize));
1396 CHECK_EQ("1", buffer);
1397
1398 bignum.AssignPowerUInt16(1, 1);
1399 CHECK(bignum.ToHexString(buffer, kBufferSize));
1400 CHECK_EQ("1", buffer);
1401
1402 bignum.AssignPowerUInt16(1, 2);
1403 CHECK(bignum.ToHexString(buffer, kBufferSize));
1404 CHECK_EQ("1", buffer);
1405
1406 bignum.AssignPowerUInt16(2, 0);
1407 CHECK(bignum.ToHexString(buffer, kBufferSize));
1408 CHECK_EQ("1", buffer);
1409
1410 bignum.AssignPowerUInt16(2, 1);
1411 CHECK(bignum.ToHexString(buffer, kBufferSize));
1412 CHECK_EQ("2", buffer);
1413
1414 bignum.AssignPowerUInt16(2, 2);
1415 CHECK(bignum.ToHexString(buffer, kBufferSize));
1416 CHECK_EQ("4", buffer);
1417
1418 bignum.AssignPowerUInt16(16, 1);
1419 CHECK(bignum.ToHexString(buffer, kBufferSize));
1420 CHECK_EQ("10", buffer);
1421
1422 bignum.AssignPowerUInt16(16, 2);
1423 CHECK(bignum.ToHexString(buffer, kBufferSize));
1424 CHECK_EQ("100", buffer);
1425
1426 bignum.AssignPowerUInt16(16, 5);
1427 CHECK(bignum.ToHexString(buffer, kBufferSize));
1428 CHECK_EQ("100000", buffer);
1429
1430 bignum.AssignPowerUInt16(16, 8);
1431 CHECK(bignum.ToHexString(buffer, kBufferSize));
1432 CHECK_EQ("100000000", buffer);
1433
1434 bignum.AssignPowerUInt16(16, 16);
1435 CHECK(bignum.ToHexString(buffer, kBufferSize));
1436 CHECK_EQ("10000000000000000", buffer);
1437
1438 bignum.AssignPowerUInt16(16, 30);
1439 CHECK(bignum.ToHexString(buffer, kBufferSize));
1440 CHECK_EQ("1000000000000000000000000000000", buffer);
1441
1442 bignum.AssignPowerUInt16(10, 0);
1443 CHECK(bignum.ToHexString(buffer, kBufferSize));
1444 CHECK_EQ("1", buffer);
1445
1446 bignum.AssignPowerUInt16(10, 1);
1447 CHECK(bignum.ToHexString(buffer, kBufferSize));
1448 CHECK_EQ("A", buffer);
1449
1450 bignum.AssignPowerUInt16(10, 2);
1451 CHECK(bignum.ToHexString(buffer, kBufferSize));
1452 CHECK_EQ("64", buffer);
1453
1454 bignum.AssignPowerUInt16(10, 5);
1455 CHECK(bignum.ToHexString(buffer, kBufferSize));
1456 CHECK_EQ("186A0", buffer);
1457
1458 bignum.AssignPowerUInt16(10, 8);
1459 CHECK(bignum.ToHexString(buffer, kBufferSize));
1460 CHECK_EQ("5F5E100", buffer);
1461
1462 bignum.AssignPowerUInt16(10, 16);
1463 CHECK(bignum.ToHexString(buffer, kBufferSize));
1464 CHECK_EQ("2386F26FC10000", buffer);
1465
1466 bignum.AssignPowerUInt16(10, 30);
1467 CHECK(bignum.ToHexString(buffer, kBufferSize));
1468 CHECK_EQ("C9F2C9CD04674EDEA40000000", buffer);
1469
1470 bignum.AssignPowerUInt16(10, 31);
1471 CHECK(bignum.ToHexString(buffer, kBufferSize));
1472 CHECK_EQ("7E37BE2022C0914B2680000000", buffer);
1473
1474 bignum.AssignPowerUInt16(2, 0);
1475 CHECK(bignum.ToHexString(buffer, kBufferSize));
1476 CHECK_EQ("1", buffer);
1477
1478 bignum.AssignPowerUInt16(2, 100);
1479 CHECK(bignum.ToHexString(buffer, kBufferSize));
1480 CHECK_EQ("10000000000000000000000000", buffer);
1481
1482 bignum.AssignPowerUInt16(17, 0);
1483 CHECK(bignum.ToHexString(buffer, kBufferSize));
1484 CHECK_EQ("1", buffer);
1485
1486 bignum.AssignPowerUInt16(17, 99);
1487 CHECK(bignum.ToHexString(buffer, kBufferSize));
1488 CHECK_EQ("1942BB9853FAD924A3D4DD92B89B940E0207BEF05DB9C26BC1B757"
1489 "80BE0C5A2C2990E02A681224F34ED68558CE4C6E33760931",
1490 buffer);
1491
1492 bignum.AssignPowerUInt16(0xFFFF, 99);
1493 CHECK(bignum.ToHexString(buffer, kBufferSize));
1494 CHECK_EQ("FF9D12F09B886C54E77E7439C7D2DED2D34F669654C0C2B6B8C288250"
1495 "5A2211D0E3DC9A61831349EAE674B11D56E3049D7BD79DAAD6C9FA2BA"
1496 "528E3A794299F2EE9146A324DAFE3E88967A0358233B543E233E575B9"
1497 "DD4E3AA7942146426C328FF55BFD5C45E0901B1629260AF9AE2F310C5"
1498 "50959FAF305C30116D537D80CF6EBDBC15C5694062AF1AC3D956D0A41"
1499 "B7E1B79FF11E21D83387A1CE1F5882B31E4B5D8DE415BDBE6854466DF"
1500 "343362267A7E8833119D31D02E18DB5B0E8F6A64B0ED0D0062FFFF",
1501 buffer);
1502}