1 // Copyright 2011 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are
6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided
11 // with the distribution.
12 // * Neither the name of Google Inc. nor the names of its
13 // contributors may be used to endorse or promote products derived
14 // from this software without specific prior written permission.
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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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.
28 // Flags: --max-new-space-size=256 --allow-natives-syntax
32 function testFloor(expect, input) {
33 var test = new Function('n',
34 '"' + (test_id++) + '";return Math.floor(n)');
35 assertEquals(expect, test(input));
36 assertEquals(expect, test(input));
37 assertEquals(expect, test(input));
38 %OptimizeFunctionOnNextCall(test);
39 assertEquals(expect, test(input));
44 return (function() { return x - 0.5; })();
48 // Ensure that a negative zero coming from Math.floor is properly handled
49 // by other operations.
51 return 1 / Math.floor(x);
53 assertEquals(-Infinity, ifloor(-0));
54 assertEquals(-Infinity, ifloor(-0));
55 assertEquals(-Infinity, ifloor(-0));
56 %OptimizeFunctionOnNextCall(ifloor);
57 assertEquals(-Infinity, ifloor(-0));
60 testFloor(0, 0.49999999999999994);
64 testFloor(-1, -0.49999999999999994);
76 testFloor(0, Number.MIN_VALUE);
77 testFloor(-1, -Number.MIN_VALUE);
78 testFloor(Number.MAX_VALUE, Number.MAX_VALUE);
79 testFloor(-Number.MAX_VALUE, -Number.MAX_VALUE);
80 testFloor(Infinity, Infinity);
81 testFloor(-Infinity, -Infinity);
85 // Test in a loop to cover the custom IC and GC-related issues.
86 for (var i = 0; i < 100; i++) {