37 lines
1.1 KiB
JavaScript
37 lines
1.1 KiB
JavaScript
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// 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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// Flags: --allow-natives-syntax
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function assertDoubleBits(hi, lo, x) {
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hi = hi | 0;
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lo = lo | 0;
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assertEquals(x, %_ConstructDouble(hi, lo));
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assertEquals(hi, %_DoubleHi(x));
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assertEquals(lo, %_DoubleLo(x));
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assertEquals(x, %_ConstructDouble(%_DoubleHi(x), %_DoubleLo(x)));
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}
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var tests = [0x7ff00000, 0x00000000, Infinity,
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0xfff00000, 0x00000000, -Infinity,
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0x80000000, 0x00000000, -0,
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0x400921fb, 0x54442d18, Math.PI,
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0xc00921fb, 0x54442d18, -Math.PI,
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0x4005bf0a, 0x8b145769, Math.E,
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0xc005bf0a, 0x8b145769, -Math.E,
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0xbfe80000, 0x00000000, -0.75];
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for (var i = 0; i < tests.length; i += 3) {
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assertDoubleBits(tests[i], tests[i + 1], tests[i + 2]);
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}
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%OptimizeFunctionOnNextCall(assertDoubleBits);
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for (var i = 0; i < tests.length; i += 3) {
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assertDoubleBits(tests[i], tests[i + 1], tests[i + 2]);
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assertOptimized(assertDoubleBits);
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}
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