mirror of
https://github.com/tc39/test262.git
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116 lines
7.0 KiB
JavaScript
116 lines
7.0 KiB
JavaScript
// Copyright (C) 2017 Josh Wolfe. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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description: Right shift for BigInt values
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esid: sec-numeric-types-bigint-signedRightShift
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info: |
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BigInt::signedRightShift (x, y)
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The abstract operation BigInt::signedRightShift with arguments x and y of type BigInt:
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1. Return BigInt::leftShift(x, -y).
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sec-numeric-types-bigint-leftShift
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BigInt::leftShift (x, y)
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The abstract operation BigInt::leftShift with two arguments x and y of BigInt:
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1. If y < 0,
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a. Return a BigInt representing x divided by 2-y, rounding down to the nearest integer, including for negative numbers.
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2. Return a BigInt representing x multiplied by 2y.
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NOTE: Semantics here should be equivalent to a bitwise shift, treating the BigInt as an infinite length string of binary two's complement digits.
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features: [BigInt]
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---*/
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assert.sameValue(0n >> 0n, 0n, "0n >> 0n === 0n");
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assert.sameValue(0b101n >> -1n, 0b1010n, "0b101n >> -1n === 0b1010n");
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assert.sameValue(0b101n >> -2n, 0b10100n, "0b101n >> -2n === 0b10100n");
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assert.sameValue(0b101n >> -3n, 0b101000n, "0b101n >> -3n === 0b101000n");
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assert.sameValue(0b101n >> 1n, 0b10n, "0b101n >> 1n === 0b10n");
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assert.sameValue(0b101n >> 2n, 1n, "0b101n >> 2n === 1n");
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assert.sameValue(0b101n >> 3n, 0n, "0b101n >> 3n === 0n");
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assert.sameValue(0n >> -128n, 0n, "0n >> -128n === 0n");
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assert.sameValue(0n >> 128n, 0n, "0n >> 128n === 0n");
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assert.sameValue(0x246n >> 0n, 0x246n, "0x246n >> 0n === 0x246n");
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assert.sameValue(0x246n >> -127n, 0x12300000000000000000000000000000000n, "0x246n >> -127n === 0x12300000000000000000000000000000000n");
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assert.sameValue(0x246n >> -128n, 0x24600000000000000000000000000000000n, "0x246n >> -128n === 0x24600000000000000000000000000000000n");
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assert.sameValue(0x246n >> -129n, 0x48c00000000000000000000000000000000n, "0x246n >> -129n === 0x48c00000000000000000000000000000000n");
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assert.sameValue(0x246n >> 128n, 0n, "0x246n >> 128n === 0n");
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assert.sameValue(
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0x123456789abcdef0fedcba9876543212345678n >> -64n, 0x123456789abcdef0fedcba98765432123456780000000000000000n,
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"0x123456789abcdef0fedcba9876543212345678n >> -64n === 0x123456789abcdef0fedcba98765432123456780000000000000000n");
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assert.sameValue(
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0x123456789abcdef0fedcba9876543212345678n >> -32n, 0x123456789abcdef0fedcba987654321234567800000000n,
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"0x123456789abcdef0fedcba9876543212345678n >> -32n === 0x123456789abcdef0fedcba987654321234567800000000n");
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assert.sameValue(
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0x123456789abcdef0fedcba9876543212345678n >> -16n, 0x123456789abcdef0fedcba98765432123456780000n,
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"0x123456789abcdef0fedcba9876543212345678n >> -16n === 0x123456789abcdef0fedcba98765432123456780000n");
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assert.sameValue(
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0x123456789abcdef0fedcba9876543212345678n >> 0n, 0x123456789abcdef0fedcba9876543212345678n,
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"0x123456789abcdef0fedcba9876543212345678n >> 0n === 0x123456789abcdef0fedcba9876543212345678n");
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assert.sameValue(
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0x123456789abcdef0fedcba9876543212345678n >> 16n, 0x123456789abcdef0fedcba987654321234n,
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"0x123456789abcdef0fedcba9876543212345678n >> 16n === 0x123456789abcdef0fedcba987654321234n");
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assert.sameValue(
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0x123456789abcdef0fedcba9876543212345678n >> 32n, 0x123456789abcdef0fedcba98765432n,
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"0x123456789abcdef0fedcba9876543212345678n >> 32n === 0x123456789abcdef0fedcba98765432n");
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assert.sameValue(
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0x123456789abcdef0fedcba9876543212345678n >> 64n, 0x123456789abcdef0fedcban,
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"0x123456789abcdef0fedcba9876543212345678n >> 64n === 0x123456789abcdef0fedcban");
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assert.sameValue(
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0x123456789abcdef0fedcba9876543212345678n >> 127n, 0x2468acn,
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"0x123456789abcdef0fedcba9876543212345678n >> 127n === 0x2468acn");
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assert.sameValue(
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0x123456789abcdef0fedcba9876543212345678n >> 128n, 0x123456n,
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"0x123456789abcdef0fedcba9876543212345678n >> 128n === 0x123456n");
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assert.sameValue(
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0x123456789abcdef0fedcba9876543212345678n >> 129n, 0x91a2bn,
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"0x123456789abcdef0fedcba9876543212345678n >> 129n === 0x91a2bn");
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assert.sameValue(-5n >> -1n, -0xan, "-5n >> -1n === -0xan");
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assert.sameValue(-5n >> -2n, -0x14n, "-5n >> -2n === -0x14n");
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assert.sameValue(-5n >> -3n, -0x28n, "-5n >> -3n === -0x28n");
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assert.sameValue(-5n >> 1n, -3n, "-5n >> 1n === -3n");
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assert.sameValue(-5n >> 2n, -2n, "-5n >> 2n === -2n");
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assert.sameValue(-5n >> 3n, -1n, "-5n >> 3n === -1n");
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assert.sameValue(-1n >> -128n, -0x100000000000000000000000000000000n, "-1n >> -128n === -0x100000000000000000000000000000000n");
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assert.sameValue(-1n >> 0n, -1n, "-1n >> 0n === -1n");
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assert.sameValue(-1n >> 128n, -1n, "-1n >> 128n === -1n");
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assert.sameValue(-0x246n >> 0n, -0x246n, "-0x246n >> 0n === -0x246n");
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assert.sameValue(-0x246n >> -127n, -0x12300000000000000000000000000000000n, "-0x246n >> -127n === -0x12300000000000000000000000000000000n");
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assert.sameValue(-0x246n >> -128n, -0x24600000000000000000000000000000000n, "-0x246n >> -128n === -0x24600000000000000000000000000000000n");
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assert.sameValue(-0x246n >> -129n, -0x48c00000000000000000000000000000000n, "-0x246n >> -129n === -0x48c00000000000000000000000000000000n");
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assert.sameValue(-0x246n >> 128n, -1n, "-0x246n >> 128n === -1n");
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assert.sameValue(
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-0x123456789abcdef0fedcba9876543212345678n >> -64n, -0x123456789abcdef0fedcba98765432123456780000000000000000n,
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"-0x123456789abcdef0fedcba9876543212345678n >> -64n === -0x123456789abcdef0fedcba98765432123456780000000000000000n");
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assert.sameValue(
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-0x123456789abcdef0fedcba9876543212345678n >> -32n, -0x123456789abcdef0fedcba987654321234567800000000n,
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"-0x123456789abcdef0fedcba9876543212345678n >> -32n === -0x123456789abcdef0fedcba987654321234567800000000n");
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assert.sameValue(
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-0x123456789abcdef0fedcba9876543212345678n >> -16n, -0x123456789abcdef0fedcba98765432123456780000n,
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"-0x123456789abcdef0fedcba9876543212345678n >> -16n === -0x123456789abcdef0fedcba98765432123456780000n");
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assert.sameValue(
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-0x123456789abcdef0fedcba9876543212345678n >> 0n, -0x123456789abcdef0fedcba9876543212345678n,
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"-0x123456789abcdef0fedcba9876543212345678n >> 0n === -0x123456789abcdef0fedcba9876543212345678n");
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assert.sameValue(
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-0x123456789abcdef0fedcba9876543212345678n >> 16n, -0x123456789abcdef0fedcba987654321235n,
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"-0x123456789abcdef0fedcba9876543212345678n >> 16n === -0x123456789abcdef0fedcba987654321235n");
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assert.sameValue(
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-0x123456789abcdef0fedcba9876543212345678n >> 32n, -0x123456789abcdef0fedcba98765433n,
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"-0x123456789abcdef0fedcba9876543212345678n >> 32n === -0x123456789abcdef0fedcba98765433n");
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assert.sameValue(
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-0x123456789abcdef0fedcba9876543212345678n >> 64n, -0x123456789abcdef0fedcbbn,
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"-0x123456789abcdef0fedcba9876543212345678n >> 64n === -0x123456789abcdef0fedcbbn");
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assert.sameValue(
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-0x123456789abcdef0fedcba9876543212345678n >> 127n, -0x2468adn,
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"-0x123456789abcdef0fedcba9876543212345678n >> 127n === -0x2468adn");
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assert.sameValue(
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-0x123456789abcdef0fedcba9876543212345678n >> 128n, -0x123457n,
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"-0x123456789abcdef0fedcba9876543212345678n >> 128n === -0x123457n");
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assert.sameValue(
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-0x123456789abcdef0fedcba9876543212345678n >> 129n, -0x91a2cn,
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"-0x123456789abcdef0fedcba9876543212345678n >> 129n === -0x91a2cn");
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