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Issue 6286135: Make sure there are no errors when compiling V8 using VS2005 project files.... (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: '' Created 9 years, 10 months ago
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1 // Copyright 2010 the V8 project authors. All rights reserved. 1 // Copyright 2010 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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60 60
61 void Bignum::AssignUInt64(uint64_t value) { 61 void Bignum::AssignUInt64(uint64_t value) {
62 const int kUInt64Size = 64; 62 const int kUInt64Size = 64;
63 63
64 Zero(); 64 Zero();
65 if (value == 0) return; 65 if (value == 0) return;
66 66
67 int needed_bigits = kUInt64Size / kBigitSize + 1; 67 int needed_bigits = kUInt64Size / kBigitSize + 1;
68 EnsureCapacity(needed_bigits); 68 EnsureCapacity(needed_bigits);
69 for (int i = 0; i < needed_bigits; ++i) { 69 for (int i = 0; i < needed_bigits; ++i) {
70 bigits_[i] = value & kBigitMask; 70 bigits_[i] = static_cast<Chunk>(value & kBigitMask);
71 value = value >> kBigitSize; 71 value = value >> kBigitSize;
72 } 72 }
73 used_digits_ = needed_bigits; 73 used_digits_ = needed_bigits;
74 Clamp(); 74 Clamp();
75 } 75 }
76 76
77 77
78 void Bignum::AssignBignum(const Bignum& other) { 78 void Bignum::AssignBignum(const Bignum& other) {
79 exponent_ = other.exponent_; 79 exponent_ = other.exponent_;
80 for (int i = 0; i < other.used_digits_; ++i) { 80 for (int i = 0; i < other.used_digits_; ++i) {
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259 // Assert that this number + 1 (for the carry) fits into double chunk. 259 // Assert that this number + 1 (for the carry) fits into double chunk.
260 ASSERT(kDoubleChunkSize >= kBigitSize + 32 + 1); 260 ASSERT(kDoubleChunkSize >= kBigitSize + 32 + 1);
261 DoubleChunk carry = 0; 261 DoubleChunk carry = 0;
262 for (int i = 0; i < used_digits_; ++i) { 262 for (int i = 0; i < used_digits_; ++i) {
263 DoubleChunk product = static_cast<DoubleChunk>(factor) * bigits_[i] + carry; 263 DoubleChunk product = static_cast<DoubleChunk>(factor) * bigits_[i] + carry;
264 bigits_[i] = static_cast<Chunk>(product & kBigitMask); 264 bigits_[i] = static_cast<Chunk>(product & kBigitMask);
265 carry = (product >> kBigitSize); 265 carry = (product >> kBigitSize);
266 } 266 }
267 while (carry != 0) { 267 while (carry != 0) {
268 EnsureCapacity(used_digits_ + 1); 268 EnsureCapacity(used_digits_ + 1);
269 bigits_[used_digits_] = carry & kBigitMask; 269 bigits_[used_digits_] = static_cast<Chunk>(carry & kBigitMask);
270 used_digits_++; 270 used_digits_++;
271 carry >>= kBigitSize; 271 carry >>= kBigitSize;
272 } 272 }
273 } 273 }
274 274
275 275
276 void Bignum::MultiplyByUInt64(uint64_t factor) { 276 void Bignum::MultiplyByUInt64(uint64_t factor) {
277 if (factor == 1) return; 277 if (factor == 1) return;
278 if (factor == 0) { 278 if (factor == 0) {
279 Zero(); 279 Zero();
280 return; 280 return;
281 } 281 }
282 ASSERT(kBigitSize < 32); 282 ASSERT(kBigitSize < 32);
283 uint64_t carry = 0; 283 uint64_t carry = 0;
284 uint64_t low = factor & 0xFFFFFFFF; 284 uint64_t low = factor & 0xFFFFFFFF;
285 uint64_t high = factor >> 32; 285 uint64_t high = factor >> 32;
286 for (int i = 0; i < used_digits_; ++i) { 286 for (int i = 0; i < used_digits_; ++i) {
287 uint64_t product_low = low * bigits_[i]; 287 uint64_t product_low = low * bigits_[i];
288 uint64_t product_high = high * bigits_[i]; 288 uint64_t product_high = high * bigits_[i];
289 uint64_t tmp = (carry & kBigitMask) + product_low; 289 uint64_t tmp = (carry & kBigitMask) + product_low;
290 bigits_[i] = tmp & kBigitMask; 290 bigits_[i] = static_cast<Chunk>(tmp & kBigitMask);
291 carry = (carry >> kBigitSize) + (tmp >> kBigitSize) + 291 carry = (carry >> kBigitSize) + (tmp >> kBigitSize) +
292 (product_high << (32 - kBigitSize)); 292 (product_high << (32 - kBigitSize));
293 } 293 }
294 while (carry != 0) { 294 while (carry != 0) {
295 EnsureCapacity(used_digits_ + 1); 295 EnsureCapacity(used_digits_ + 1);
296 bigits_[used_digits_] = carry & kBigitMask; 296 bigits_[used_digits_] = static_cast<Chunk>(carry & kBigitMask);
297 used_digits_++; 297 used_digits_++;
298 carry >>= kBigitSize; 298 carry >>= kBigitSize;
299 } 299 }
300 } 300 }
301 301
302 302
303 void Bignum::MultiplyByPowerOfTen(int exponent) { 303 void Bignum::MultiplyByPowerOfTen(int exponent) {
304 const uint64_t kFive27 = V8_2PART_UINT64_C(0x6765c793, fa10079d); 304 const uint64_t kFive27 = V8_2PART_UINT64_C(0x6765c793, fa10079d);
305 const uint16_t kFive1 = 5; 305 const uint16_t kFive1 = 5;
306 const uint16_t kFive2 = kFive1 * 5; 306 const uint16_t kFive2 = kFive1 * 5;
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741 for (int i = 0; i < factor; ++i) { 741 for (int i = 0; i < factor; ++i) {
742 SubtractBignum(other); 742 SubtractBignum(other);
743 } 743 }
744 return; 744 return;
745 } 745 }
746 Chunk borrow = 0; 746 Chunk borrow = 0;
747 int exponent_diff = other.exponent_ - exponent_; 747 int exponent_diff = other.exponent_ - exponent_;
748 for (int i = 0; i < other.used_digits_; ++i) { 748 for (int i = 0; i < other.used_digits_; ++i) {
749 DoubleChunk product = static_cast<DoubleChunk>(factor) * other.bigits_[i]; 749 DoubleChunk product = static_cast<DoubleChunk>(factor) * other.bigits_[i];
750 DoubleChunk remove = borrow + product; 750 DoubleChunk remove = borrow + product;
751 Chunk difference = bigits_[i + exponent_diff] - (remove & kBigitMask); 751 Chunk difference =
752 bigits_[i + exponent_diff] - static_cast<Chunk>(remove & kBigitMask);
752 bigits_[i + exponent_diff] = difference & kBigitMask; 753 bigits_[i + exponent_diff] = difference & kBigitMask;
753 borrow = static_cast<Chunk>((difference >> (kChunkSize - 1)) + 754 borrow = static_cast<Chunk>((difference >> (kChunkSize - 1)) +
754 (remove >> kBigitSize)); 755 (remove >> kBigitSize));
755 } 756 }
756 for (int i = other.used_digits_ + exponent_diff; i < used_digits_; ++i) { 757 for (int i = other.used_digits_ + exponent_diff; i < used_digits_; ++i) {
757 if (borrow == 0) return; 758 if (borrow == 0) return;
758 Chunk difference = bigits_[i] - borrow; 759 Chunk difference = bigits_[i] - borrow;
759 bigits_[i] = difference & kBigitMask; 760 bigits_[i] = difference & kBigitMask;
760 borrow = difference >> (kChunkSize - 1); 761 borrow = difference >> (kChunkSize - 1);
761 ++i; 762 ++i;
762 } 763 }
763 Clamp(); 764 Clamp();
764 } 765 }
765 766
766 767
767 } } // namespace v8::internal 768 } } // namespace v8::internal
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