41 lines
1.2 KiB
JavaScript
41 lines
1.2 KiB
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 = this;
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var foreign = {};
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var heap = new ArrayBuffer(64 * 1024);
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var m = (function(stdlib, foreign, heap) {
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"use asm";
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function hi1(i) {
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i = +i;
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return %_DoubleHi(i)|0;
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}
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function hi2(i, j) {
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i = +i;
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j = +j;
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return %_DoubleHi(i)+%_DoubleHi(j)|0;
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}
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return { hi1: hi1, hi2: hi2 };
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})(stdlib, foreign, heap);
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assertEquals(0, m.hi1(0.0));
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assertEquals(-2147483648, m.hi1(-0.0));
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assertEquals(2146435072, m.hi1(Infinity));
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assertEquals(-1048576, m.hi1(-Infinity));
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assertEquals(0, m.hi2(0.0, 0.0));
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assertEquals(-2147483648, m.hi2(0.0, -0.0));
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assertEquals(-2147483648, m.hi2(-0.0, 0.0));
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assertEquals(0, m.hi2(-0.0, -0.0));
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for (var i = -2147483648; i < 2147483648; i += 3999773) {
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assertEquals(%_DoubleHi(i), m.hi1(i));
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assertEquals(i, m.hi1(%ConstructDouble(i, 0)));
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assertEquals(i, m.hi1(%ConstructDouble(i, i)));
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assertEquals(i+i|0, m.hi2(%ConstructDouble(i, 0), %ConstructDouble(i, 0)));
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assertEquals(i+i|0, m.hi2(%ConstructDouble(i, i), %ConstructDouble(i, i)));
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}
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