ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 1 | // Copyright 2010 the V8 project authors. All rights reserved. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 2 | // Redistribution and use in source and binary forms, with or without |
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ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 28 | // Tests the special cases specified by ES 15.8.2.17 |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 29 | |
lrn@chromium.org | 32d961d | 2010-06-30 09:09:34 +0000 | [diff] [blame] | 30 | function test(expected_sqrt, value) { |
| 31 | assertEquals(expected_sqrt, Math.sqrt(value)); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 32 | if (isFinite(value)) { |
| 33 | if (value === 0 && (1 / value) == -Infinity) { |
| 34 | // Math.pow(-0, 0.5) must be zero, but Math.sqrt(-0) is -0. |
| 35 | expected_sqrt = 0; |
| 36 | } |
lrn@chromium.org | 32d961d | 2010-06-30 09:09:34 +0000 | [diff] [blame] | 37 | assertEquals(expected_sqrt, Math.pow(value, 0.5)); |
| 38 | } |
| 39 | } |
| 40 | |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 41 | // Simple sanity check |
lrn@chromium.org | 32d961d | 2010-06-30 09:09:34 +0000 | [diff] [blame] | 42 | test(2, 4); |
| 43 | test(0.1, 0.01); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 44 | |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 45 | // Spec tests |
lrn@chromium.org | 32d961d | 2010-06-30 09:09:34 +0000 | [diff] [blame] | 46 | test(NaN, NaN); |
| 47 | test(NaN, -1); |
| 48 | test(+0, +0); |
| 49 | test(-0, -0); |
| 50 | test(Infinity, Infinity); |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 51 | // -Infinity is smaller than 0 so it should return NaN |
lrn@chromium.org | 32d961d | 2010-06-30 09:09:34 +0000 | [diff] [blame] | 52 | test(NaN, -Infinity); |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 53 | |