test262/test/built-ins/BigInt/constructor-integer.js

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2018-04-16 03:28:34 +02:00
// Copyright (C) 2018 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: BigInt constructor called with integer argument
esid: sec-bigint-constructor
info: |
BigInt ( value )
...
3. If Type(prim) is Number, return ? NumberToBigInt(prim).
NumberToBigInt ( number )
...
3. Return a BigInt representing the mathematical value of number.
features: [BigInt]
---*/
assert.sameValue(BigInt(Number.MAX_SAFE_INTEGER), 9007199254740991n);
assert.sameValue(BigInt(-Number.MAX_SAFE_INTEGER), -9007199254740991n);
var pos = Math.pow(2, 53);
var neg = -pos;
assert.sameValue(BigInt(pos), 9007199254740992n,
"BigInt(2**53) === 9007199254740992n");
assert.sameValue(BigInt(neg), -9007199254740992n,
"BigInt(2**53) === -9007199254740992n");