openharmony/arkcompiler_ets_runtime
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fix buf for needMoveBit is 64

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Signed-off-by: zhangyouyou <zhangyouyou2@huawei.com>
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zhangyouyou 2024-02-17 16:46:19 +08:00
parent 481af3943e
commit 1bff458256
1 changed files with 2 additions and 1 deletions
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ecmascript/js_bigint.cpp
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@ -1594,7 +1594,8 @@ JSTaggedNumber BigInt::BigIntToNumber(JSHandle<BigInt> bigint)
uint64_t sign = bigintSign ? 1ULL << 63 : 0; // 63 : Set the sign bit of sign to 1
int needMoveBit = static_cast<int>(leadingZeros + BigInt::DATEBITS + 1);
// Align to the most significant bit, then right shift 12 bits so that the head of the mantissa is in place
uint64_t mantissa = (static_cast<uint64_t>(BigintHead) << needMoveBit) >> 12; // 12 mantissa just has 52 bits
uint64_t mantissa = (needMoveBit == 64) ? 0 :
((static_cast<uint64_t>(BigintHead) << needMoveBit) >> 12); // 12 mantissa// just has 52 bits
int remainMantissaBits = needMoveBit - 12;
uint64_t exponent = static_cast<uint64_t>(bigintBitLen - 1);
int index = static_cast<int>(bigintLen - 1);