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1 // Copyright 2014 the V8 project authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 // Flags: --allow-natives-syntax | |
6 | |
7 function assertDoubleBits(hi, lo, x) { | |
8 hi = hi | 0; | |
9 lo = lo | 0; | |
10 assertEquals(x, %ConstructDouble(hi, lo)); | |
11 assertEquals(hi, %_DoubleHi(x)); | |
12 assertEquals(lo, %_DoubleLo(x)); | |
13 assertEquals(x, %ConstructDouble(%_DoubleHi(x), %_DoubleLo(x))); | |
14 } | |
15 | |
16 | |
17 var tests = [0x7ff00000, 0x00000000, Infinity, | |
18 0xfff00000, 0x00000000, -Infinity, | |
19 0x80000000, 0x00000000, -0, | |
20 0x400921fb, 0x54442d18, Math.PI, | |
21 0xc00921fb, 0x54442d18, -Math.PI, | |
22 0x4005bf0a, 0x8b145769, Math.E, | |
23 0xc005bf0a, 0x8b145769, -Math.E, | |
24 0xbfe80000, 0x00000000, -0.75]; | |
25 | |
26 | |
27 for (var i = 0; i < tests.length; i += 3) { | |
28 assertDoubleBits(tests[i], tests[i + 1], tests[i + 2]); | |
29 } | |
30 | |
31 %OptimizeFunctionOnNextCall(assertDoubleBits); | |
32 | |
33 for (var i = 0; i < tests.length; i += 3) { | |
34 assertDoubleBits(tests[i], tests[i + 1], tests[i + 2]); | |
35 assertOptimized(assertDoubleBits); | |
36 } | |
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