| Index: third_party/WebKit/Source/wtf/dtoa/diy-fp.cc
|
| diff --git a/third_party/WebKit/Source/wtf/dtoa/diy-fp.cc b/third_party/WebKit/Source/wtf/dtoa/diy-fp.cc
|
| index b2f460127ce2e50cb7ffcc4dfca17d3c0cfaa1bf..2789ce2830e66c8721aea524cbe31cf90ec9ee29 100644
|
| --- a/third_party/WebKit/Source/wtf/dtoa/diy-fp.cc
|
| +++ b/third_party/WebKit/Source/wtf/dtoa/diy-fp.cc
|
| @@ -33,29 +33,29 @@ namespace WTF {
|
|
|
| namespace double_conversion {
|
|
|
| - void DiyFp::Multiply(const DiyFp& other) {
|
| - // Simply "emulates" a 128 bit multiplication.
|
| - // However: the resulting number only contains 64 bits. The least
|
| - // significant 64 bits are only used for rounding the most significant 64
|
| - // bits.
|
| - const uint64_t kM32 = 0xFFFFFFFFU;
|
| - uint64_t a = f_ >> 32;
|
| - uint64_t b = f_ & kM32;
|
| - uint64_t c = other.f_ >> 32;
|
| - uint64_t d = other.f_ & kM32;
|
| - uint64_t ac = a * c;
|
| - uint64_t bc = b * c;
|
| - uint64_t ad = a * d;
|
| - uint64_t bd = b * d;
|
| - uint64_t tmp = (bd >> 32) + (ad & kM32) + (bc & kM32);
|
| - // By adding 1U << 31 to tmp we round the final result.
|
| - // Halfway cases will be round up.
|
| - tmp += 1U << 31;
|
| - uint64_t result_f = ac + (ad >> 32) + (bc >> 32) + (tmp >> 32);
|
| - e_ += other.e_ + 64;
|
| - f_ = result_f;
|
| - }
|
| +void DiyFp::Multiply(const DiyFp& other) {
|
| + // Simply "emulates" a 128 bit multiplication.
|
| + // However: the resulting number only contains 64 bits. The least
|
| + // significant 64 bits are only used for rounding the most significant 64
|
| + // bits.
|
| + const uint64_t kM32 = 0xFFFFFFFFU;
|
| + uint64_t a = f_ >> 32;
|
| + uint64_t b = f_ & kM32;
|
| + uint64_t c = other.f_ >> 32;
|
| + uint64_t d = other.f_ & kM32;
|
| + uint64_t ac = a * c;
|
| + uint64_t bc = b * c;
|
| + uint64_t ad = a * d;
|
| + uint64_t bd = b * d;
|
| + uint64_t tmp = (bd >> 32) + (ad & kM32) + (bc & kM32);
|
| + // By adding 1U << 31 to tmp we round the final result.
|
| + // Halfway cases will be round up.
|
| + tmp += 1U << 31;
|
| + uint64_t result_f = ac + (ad >> 32) + (bc >> 32) + (tmp >> 32);
|
| + e_ += other.e_ + 64;
|
| + f_ = result_f;
|
| +}
|
|
|
| } // namespace double_conversion
|
|
|
| -} // namespace WTF
|
| +} // namespace WTF
|
|
|