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test-bignum.cc
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27 
28 #include <stdlib.h>
29 
30 #include "v8.h"
31 
32 #include "platform.h"
33 #include "cctest.h"
34 #include "bignum.h"
35 
36 using namespace v8::internal;
37 
38 
39 static const int kBufferSize = 1024;
40 
41 static void AssignHexString(Bignum* bignum, const char* str) {
42  bignum->AssignHexString(Vector<const char>(str, StrLength(str)));
43 }
44 
45 
46 static void AssignDecimalString(Bignum* bignum, const char* str) {
47  bignum->AssignDecimalString(Vector<const char>(str, StrLength(str)));
48 }
49 
50 
51 TEST(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 
120 TEST(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 
158 TEST(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 
257 TEST(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 
347 TEST(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 
447 TEST(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 
548 TEST(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 
649 TEST(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 
979 TEST(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 
1063 TEST(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 
1172 TEST(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 
1359 TEST(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 
1390 TEST(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 }
v8::internal::Bignum::AssignBignum
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Definition: bignum.cc:78
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Definition: checks.h:252
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Definition: bignum.cc:276
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static bool PlusLessEqual(const Bignum &a, const Bignum &b, const Bignum &c)
Definition: bignum.h:88
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Definition: bignum.cc:61
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Definition: bignum.cc:172
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void AddUInt64(uint64_t operand)
Definition: bignum.cc:164
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#define CHECK(condition)
Definition: checks.h:75
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static bool PlusLess(const Bignum &a, const Bignum &b, const Bignum &c)
Definition: bignum.h:92
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Definition: bignum.cc:618
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Definition: bignum.cc:134
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Definition: bignum.cc:636
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static bool Equal(const Bignum &a, const Bignum &b)
Definition: bignum.h:72
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Definition: bignum.cc:415
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Definition: utils.h:161
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Definition: bignum.cc:241
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Definition: bignum.cc:489
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Definition: bignum.h:84
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Definition: bignum.cc:250
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Definition: bignum.h:78
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Definition: utils.h:253
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Definition: bignum.cc:50
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Definition: bignum.cc:214
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Definition: bignum.cc:571
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Definition: bignum.h:75
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