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dad73f645c
PR-URL: https://github.com/iojs/io.js/pull/243 Reviewed-By: Fedor Indutny <fedor@indutny.com> Reviewed-By: Trevor Norris <trev.norris@gmail.com>
38 lines
947 B
JavaScript
38 lines
947 B
JavaScript
// Copyright 2014 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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var stdlib = {};
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var foreign = {};
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var heap = new ArrayBuffer(64 * 1024);
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var rol = (function Module(stdlib, foreign, heap) {
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"use asm";
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function rol(x, y) {
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x = x | 0;
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y = y | 0;
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return (x << y) | (x >>> (32 - y));
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}
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return { rol: rol };
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})(stdlib, foreign, heap).rol;
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assertEquals(10, rol(10, 0));
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assertEquals(2, rol(1, 1));
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assertEquals(0x40000000, rol(1, 30));
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assertEquals(-0x80000000, rol(1, 31));
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var ror = (function Module(stdlib, foreign, heap) {
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"use asm";
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function ror(x, y) {
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x = x | 0;
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y = y | 0;
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return (x << (32 - y)) | (x >>> y);
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}
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return { ror: ror };
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})(stdlib, foreign, heap).ror;
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assertEquals(10, ror(10, 0));
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assertEquals(-0x80000000, ror(1, 1));
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assertEquals(0x40000000, ror(1, 2));
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assertEquals(2, ror(1, 31));
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