OLD | NEW |
1 // Copyright 2008 the V8 project authors. All rights reserved. | 1 // Copyright 2008 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 |
(...skipping 12 matching lines...) Expand all Loading... |
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 const SMI_MAX = (1 << 30) - 1; | 28 const SMI_MAX = (1 << 30) - 1; |
29 const SMI_MIN = -(1 << 30); | 29 const SMI_MIN = -(1 << 30); |
30 | 30 |
31 function testmulneg(a, b) { | 31 function testmulneg(a, b) { |
32 var base = a * b; | 32 var base = a * b; |
33 assertEquals(-base, a * -b); | 33 assertEquals(-base, a * -b, "a * -b where a = " + a + ", b = " + b); |
34 assertEquals(-base, -a * b); | 34 assertEquals(-base, -a * b, "-a * b where a = " + a + ", b = " + b); |
35 assertEquals(base, -a * -b); | 35 assertEquals(base, -a * -b, "*-a * -b where a = " + a + ", b = " + b); |
36 } | 36 } |
37 | 37 |
38 testmulneg(2, 3); | 38 testmulneg(2, 3); |
39 testmulneg(SMI_MAX, 3); | 39 testmulneg(SMI_MAX, 3); |
40 testmulneg(SMI_MIN, 3); | 40 testmulneg(SMI_MIN, 3); |
41 testmulneg(3.2, 2.3); | 41 testmulneg(3.2, 2.3); |
42 | 42 |
43 var x = { valueOf: function() { return 2; } }; | 43 var x = { valueOf: function() { return 2; } }; |
44 var y = { valueOf: function() { return 3; } }; | 44 var y = { valueOf: function() { return 3; } }; |
45 | 45 |
46 testmulneg(x, y); | 46 testmulneg(x, y); |
47 | 47 |
48 // The test below depends on the correct evaluation order, which is not | 48 // The test below depends on the correct evaluation order, which is not |
49 // implemented by any of the known JS engines. | 49 // implemented by any of the known JS engines. |
50 var z; | 50 var z; |
51 var v = { valueOf: function() { z+=2; return z; } }; | 51 var v = { valueOf: function() { z+=2; return z; } }; |
52 var w = { valueOf: function() { z+=3; return z; } }; | 52 var w = { valueOf: function() { z+=3; return z; } }; |
53 | 53 |
54 z = 0; | 54 z = 0; |
55 var base = v * w; | 55 var base = v * w; |
56 z = 0; | 56 z = 0; |
57 assertEquals(-base, -v * w); | 57 assertEquals(-base, -v * w); |
58 z = 0; | 58 z = 0; |
59 assertEquals(base, -v * -w); | 59 assertEquals(base, -v * -w); |
OLD | NEW |