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LibJS: Implement bitwise right shift operator (>>)

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Linus Groh 2020-04-23 13:45:19 +01:00 • committed by Andreas Kling
parent f0e7404480
commit 502d1f5165
5 changed files with 88 additions and 1 deletions
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8
Libraries/LibJS/Runtime/Value.cpp
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@ -264,7 +264,13 @@ Value left_shift(Interpreter&, Value lhs, Value rhs)
Value right_shift(Interpreter&, Value lhs, Value rhs)
{
return Value((i32)lhs.to_number().as_double() >> (i32)rhs.to_number().as_double());
auto lhs_number = lhs.to_number();
if (!lhs_number.is_finite_number())
return Value(0);
auto rhs_number = rhs.to_number();
if (!rhs_number.is_finite_number())
return lhs_number;
return Value((i32)lhs_number.as_double() >> (i32)rhs_number.as_double());
}
Value add(Interpreter& interpreter, Value lhs, Value rhs)