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1 // Copyright 2009 the V8 project authors. All rights reserved. | 1 // Copyright 2009 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
11 // with the distribution. | 11 // with the distribution. |
12 // * Neither the name of Google Inc. nor the names of its | 12 // * Neither the name of Google Inc. nor the names of its |
13 // contributors may be used to endorse or promote products derived | 13 // contributors may be used to endorse or promote products derived |
14 // from this software without specific prior written permission. | 14 // from this software without specific prior written permission. |
15 // | 15 // |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
28 function testBitNot(x) { | 28 function testBitNot(x, name) { |
29 // The VM constant folds so we use that to check the result. | 29 // The VM constant folds so we use that to check the result. |
30 var expected = eval("~(" + x + ")"); | 30 var expected = eval("~(" + x + ")"); |
31 var actual = ~x; | 31 var actual = ~x; |
32 assertEquals(expected, actual, "x: " + x); | 32 assertEquals(expected, actual, "x: " + name); |
33 | 33 |
34 // Test the path where we can overwrite the result. Use - | 34 // Test the path where we can overwrite the result. Use - |
35 // to avoid concatenating strings. | 35 // to avoid concatenating strings. |
36 expected = eval("~(" + x + " - 0.01)"); | 36 expected = eval("~(" + x + " - 0.01)"); |
37 actual = ~(x - 0.01); | 37 actual = ~(x - 0.01); |
38 assertEquals(expected, actual, "x - 0.01: " + x); | 38 assertEquals(expected, actual, "x - 0.01: " + name); |
39 } | 39 } |
40 | 40 |
41 | 41 |
42 testBitNot(0); | 42 testBitNot(0, 0); |
43 testBitNot(1); | 43 testBitNot(1, 1); |
44 testBitNot(-1); | 44 testBitNot(-1, 1); |
45 testBitNot(100); | 45 testBitNot(100, 100); |
46 testBitNot(0x40000000); | 46 testBitNot(0x40000000, "0x40000000"); |
47 testBitNot(0x7fffffff); | 47 testBitNot(0x7fffffff, "0x7fffffff"); |
48 testBitNot(0x80000000); | 48 testBitNot(0x80000000, "0x80000000"); |
49 | 49 |
50 testBitNot(2.2); | 50 testBitNot(2.2, 2.2); |
51 testBitNot(-2.3); | 51 testBitNot(-2.3, -2.3); |
52 testBitNot(Infinity); | 52 testBitNot(Infinity, "Infinity"); |
53 testBitNot(NaN); | 53 testBitNot(NaN, "NaN"); |
54 testBitNot(-Infinity); | 54 testBitNot(-Infinity, "-Infinity"); |
55 testBitNot(0x40000000 + 0.12345); | 55 testBitNot(0x40000000 + 0.12345, "float1"); |
56 testBitNot(0x40000000 - 0.12345); | 56 testBitNot(0x40000000 - 0.12345, "float2"); |
57 testBitNot(0x7fffffff + 0.12345); | 57 testBitNot(0x7fffffff + 0.12345, "float3"); |
58 testBitNot(0x7fffffff - 0.12345); | 58 testBitNot(0x7fffffff - 0.12345, "float4"); |
59 testBitNot(0x80000000 + 0.12345); | 59 testBitNot(0x80000000 + 0.12345, "float5"); |
60 testBitNot(0x80000000 - 0.12345); | 60 testBitNot(0x80000000 - 0.12345, "float6"); |
61 | 61 |
62 testBitNot("0"); | 62 testBitNot("0", "string0"); |
63 testBitNot("2.3"); | 63 testBitNot("2.3", "string2.3"); |
64 testBitNot("-9.4"); | 64 testBitNot("-9.4", "string-9.4"); |
65 | 65 |
66 | 66 |
67 // Try to test that we can deal with allocation failures in | 67 // Try to test that we can deal with allocation failures in |
68 // the fast path and just use the slow path instead. | 68 // the fast path and just use the slow path instead. |
69 function TryToGC() { | 69 function TryToGC() { |
70 var x = 0x40000000; | 70 var x = 0x40000000; |
71 for (var i = 0; i < 1000000; i++) { | 71 for (var i = 0; i < 1000000; i++) { |
72 assertEquals(~0x40000000, ~x); | 72 assertEquals(~0x40000000, ~x); |
73 } | 73 } |
74 } | 74 } |
75 TryToGC(); | 75 TryToGC(); |
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