32 lines
687 B
JavaScript
32 lines
687 B
JavaScript
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// Copyright 2015 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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// Flags: --allow-natives-syntax
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var stdlib = { Math: Math };
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var f = (function Module(stdlib) {
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"use asm";
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var clz32 = stdlib.Math.clz32;
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function f(a) {
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a = a >>> 0;
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return clz32(a)|0;
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}
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return f;
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})(stdlib);
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assertEquals(32, f(0));
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assertEquals(32, f(NaN));
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assertEquals(32, f(undefined));
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for (var i = 0; i < 32; ++i) {
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assertEquals(i, f((-1) >>> i));
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}
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for (var i = -2147483648; i < 2147483648; i += 3999773) {
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assertEquals(%MathClz32(i), f(i));
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assertEquals(%_MathClz32(i), f(i));
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}
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