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LibJS: Fix that leftshift for BigInts did not round down

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For negative number this previously rounded towards zero instead of the
intended always rounding down.
This commit is contained in:
davidot 2022-08-20 00:23:11 +02:00 • committed by Linus Groh
parent cb49c07fb7
commit e663504df1
3 changed files with 37 additions and 4 deletions
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10
Userland/Libraries/LibJS/Tests/operators/binary-bitwise-right-shift.js
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@ -64,3 +64,13 @@ test("shifting with non-numeric values", () => {
expect(Infinity >> Infinity).toBe(0);
expect(-Infinity >> Infinity).toBe(0);
});
describe("logical right shift on big ints", () => {
expect(3n >> 1n).toBe(1n);
expect(3n >> 2n).toBe(0n);
expect(-3n >> 1n).toBe(-2n);
expect(-3n >> 2n).toBe(-1n);
expect(-3n >> 128n).toBe(-1n);
expect(-3n >> -6n).toBe(-192n);
expect(-3n >> 0n).toBe(-3n);
});