52 lines
1.5 KiB
JavaScript
52 lines
1.5 KiB
JavaScript
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// Copyright 2016 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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function signInt32(i) {
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i = i|0;
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return Math.sign(i);
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}
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signInt32(0);
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signInt32(2);
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%OptimizeFunctionOnNextCall(signInt32);
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assertEquals(1, signInt32(1));
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assertEquals(0, signInt32(0));
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assertEquals(-1, signInt32(-1));
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assertEquals(-1, signInt32(-1));
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assertEquals(1, signInt32(2147483647));
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assertEquals(-1, signInt32(2147483648));
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assertEquals(-1, signInt32(-2147483648));
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assertEquals(0, signInt32(NaN));
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assertEquals(0, signInt32(undefined));
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assertEquals(0, signInt32(-0));
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function signFloat64(i) {
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return Math.sign(+i);
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}
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signFloat64(0.1);
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signFloat64(-0.1);
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%OptimizeFunctionOnNextCall(signFloat64);
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assertEquals(1, signFloat64(1));
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assertEquals(1, signFloat64(0.001));
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assertEquals(-1, signFloat64(-0.002));
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assertEquals(1, signFloat64(1e100));
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assertEquals(-1, signFloat64(-2e100));
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assertEquals(0, signFloat64(0));
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assertEquals(Infinity, 1/signFloat64(0));
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assertEquals(-1, signFloat64(-1));
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assertEquals(-1, signFloat64(-1));
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assertEquals(1, signFloat64(2147483647));
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assertEquals(1, signFloat64(2147483648));
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assertEquals(-1, signFloat64(-2147483647));
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assertEquals(-1, signFloat64(-2147483648));
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assertEquals(-1, signFloat64(-2147483649));
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assertEquals(-0, signFloat64(-0));
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assertEquals(NaN, signFloat64(NaN));
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assertEquals(NaN, signFloat64(undefined));
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assertEquals(1, signFloat64(Infinity));
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assertEquals(-1, signFloat64(-Infinity));
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