1 // Copyright 2008 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
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 const SMI_MAX = (1 << 30) - 1;
29 const SMI_MIN = -(1 << 30);
31 function testmulneg(a, b) {
33 assertEquals(-base, a * -b, "a * -b where a = " + a + ", b = " + b);
34 assertEquals(-base, -a * b, "-a * b where a = " + a + ", b = " + b);
35 assertEquals(base, -a * -b, "*-a * -b where a = " + a + ", b = " + b);
39 testmulneg(SMI_MAX, 3);
40 testmulneg(SMI_MIN, 3);
43 var x = { valueOf: function() { return 2; } };
44 var y = { valueOf: function() { return 3; } };
48 // The test below depends on the correct evaluation order, which is not
49 // implemented by any of the known JS engines.
51 var v = { valueOf: function() { z+=2; return z; } };
52 var w = { valueOf: function() { z+=3; return z; } };
57 assertEquals(-base, -v * w);
59 assertEquals(base, -v * -w);