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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/bignum.h" | 5 #include "src/bignum.h" |
6 #include "src/utils.h" | 6 #include "src/utils.h" |
7 | 7 |
8 namespace v8 { | 8 namespace v8 { |
9 namespace internal { | 9 namespace internal { |
10 | 10 |
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61 bigits_[i] = 0; | 61 bigits_[i] = 0; |
62 } | 62 } |
63 used_digits_ = other.used_digits_; | 63 used_digits_ = other.used_digits_; |
64 } | 64 } |
65 | 65 |
66 | 66 |
67 static uint64_t ReadUInt64(Vector<const char> buffer, | 67 static uint64_t ReadUInt64(Vector<const char> buffer, |
68 int from, | 68 int from, |
69 int digits_to_read) { | 69 int digits_to_read) { |
70 uint64_t result = 0; | 70 uint64_t result = 0; |
71 for (int i = from; i < from + digits_to_read; ++i) { | 71 int to = from + digits_to_read; |
| 72 |
| 73 for (int i = from; i < to; ++i) { |
72 int digit = buffer[i] - '0'; | 74 int digit = buffer[i] - '0'; |
73 DCHECK(0 <= digit && digit <= 9); | 75 DCHECK(0 <= digit && digit <= 9); |
74 result = result * 10 + digit; | 76 result = result * 10 + digit; |
75 } | 77 } |
76 return result; | 78 return result; |
77 } | 79 } |
78 | 80 |
79 | 81 |
80 void Bignum::AssignDecimalString(Vector<const char> value) { | 82 void Bignum::AssignDecimalString(Vector<const char> value) { |
81 // 2^64 = 18446744073709551616 > 10^19 | 83 // 2^64 = 18446744073709551616 > 10^19 |
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743 bigits_[i] = difference & kBigitMask; | 745 bigits_[i] = difference & kBigitMask; |
744 borrow = difference >> (kChunkSize - 1); | 746 borrow = difference >> (kChunkSize - 1); |
745 } | 747 } |
746 Clamp(); | 748 Clamp(); |
747 DCHECK(Bignum::Equal(a, *this)); | 749 DCHECK(Bignum::Equal(a, *this)); |
748 } | 750 } |
749 | 751 |
750 | 752 |
751 } // namespace internal | 753 } // namespace internal |
752 } // namespace v8 | 754 } // namespace v8 |
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