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LibCrypto+LibJS: Better bitwise binary_xor binop

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We went through some trouble to make & and | work right. Reimplement ^
in terms of & and | to make ^ work right as well.

This is less fast than a direct implementation, but let's get things
working first.
This commit is contained in:
Nico Weber 2022-01-17 20:03:51 -05:00 • committed by Ali Mohammad Pur
parent 013799a4dd
commit d9b6eb29bc
2 changed files with 3 additions and 8 deletions
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7
Userland/Libraries/LibCrypto/BigInt/SignedBigInteger.cpp
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@ -238,12 +238,7 @@ FLATTEN SignedBigInteger SignedBigInteger::bitwise_and(const SignedBigInteger& o
FLATTEN SignedBigInteger SignedBigInteger::bitwise_xor(const SignedBigInteger& other) const
{
auto result = bitwise_xor(other.unsigned_value());
// The sign bit will have to be XOR'd manually.
result.m_sign = is_negative() ^ other.is_negative();
return result;
return bitwise_or(other).minus(bitwise_and(other));
}
bool SignedBigInteger::operator==(const UnsignedBigInteger& other) const