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LibJS: Add spec comments to same_value_zero()

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Linus Groh 2022-12-10 00:10:31 +00:00
parent 44a243cae4
commit 625ad4192f
Notes: sideshowbarker 2024-07-17 11:06:06 +09:00 
Author: https://github.com/linusg
Commit: https://github.com/SerenityOS/serenity/commit/625ad4192f
Pull-request: https://github.com/SerenityOS/serenity/pull/16405
Reviewed-by: https://github.com/davidot ✅
1 changed files with 5 additions and 0 deletions
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Userland/Libraries/LibJS/Runtime/Value.cpp
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@ -2130,18 +2130,23 @@ bool same_value(Value lhs, Value rhs)
// 7.2.11 SameValueZero ( x, y ), https://tc39.es/ecma262/#sec-samevaluezero
bool same_value_zero(Value lhs, Value rhs)
{
// 1. If Type(x) is different from Type(y), return false.
if (!same_type_for_equality(lhs, rhs))
return false;
// 2. If x is a Number, then
if (lhs.is_number()) {
// a. Return Number::sameValueZero(x, y).
if (lhs.is_nan() && rhs.is_nan())
return true;
return lhs.as_double() == rhs.as_double();
}
// FIXME: This should be handled in SameValueNonNumber now (formerly SameValueNonNumeric)
if (lhs.is_bigint())
return lhs.as_bigint().big_integer() == rhs.as_bigint().big_integer();
// 3. Return SameValueNonNumber(x, y).
return same_value_non_numeric(lhs, rhs);
}