Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 1 | // Copyright 2014 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | function Module(stdlib) { |
| 6 | "use asm"; |
| 7 | |
| 8 | var abs = stdlib.Math.abs; |
| 9 | |
| 10 | // f: double -> double |
| 11 | function f(a) { |
| 12 | a = +a; |
| 13 | return +abs(a); |
| 14 | } |
| 15 | |
| 16 | // g: unsigned -> double |
| 17 | function g(a) { |
| 18 | a = a>>>0; |
| 19 | return +abs(a); |
| 20 | } |
| 21 | |
| 22 | // h: signed -> double |
| 23 | function h(a) { |
| 24 | a = a|0; |
| 25 | return +abs(a); |
| 26 | } |
| 27 | |
| 28 | return { f: f, g: g, h: h }; |
| 29 | } |
| 30 | |
| 31 | var m = Module({ Math: Math }); |
| 32 | var f = m.f; |
| 33 | var g = m.g; |
| 34 | var h = m.h; |
| 35 | |
| 36 | assertTrue(isNaN(f(NaN))); |
| 37 | assertTrue(isNaN(f(undefined))); |
| 38 | assertTrue(isNaN(f(function() {}))); |
| 39 | |
| 40 | assertEquals("Infinity", String(1/f(0))); |
| 41 | assertEquals("Infinity", String(1/f(-0))); |
| 42 | assertEquals("Infinity", String(f(Infinity))); |
| 43 | assertEquals("Infinity", String(f(-Infinity))); |
| 44 | |
| 45 | assertEquals(0, f(0)); |
| 46 | assertEquals(0.1, f(0.1)); |
| 47 | assertEquals(0.5, f(0.5)); |
| 48 | assertEquals(0.1, f(-0.1)); |
| 49 | assertEquals(0.5, f(-0.5)); |
| 50 | assertEquals(1, f(1)); |
| 51 | assertEquals(1.1, f(1.1)); |
| 52 | assertEquals(1.5, f(1.5)); |
| 53 | assertEquals(1, f(-1)); |
| 54 | assertEquals(1.1, f(-1.1)); |
| 55 | assertEquals(1.5, f(-1.5)); |
| 56 | |
| 57 | assertEquals(0, g(0)); |
| 58 | assertEquals(0, g(0.1)); |
| 59 | assertEquals(0, g(0.5)); |
| 60 | assertEquals(0, g(-0.1)); |
| 61 | assertEquals(0, g(-0.5)); |
| 62 | assertEquals(1, g(1)); |
| 63 | assertEquals(1, g(1.1)); |
| 64 | assertEquals(1, g(1.5)); |
| 65 | assertEquals(4294967295, g(-1)); |
| 66 | assertEquals(4294967295, g(-1.1)); |
| 67 | assertEquals(4294967295, g(-1.5)); |
| 68 | |
| 69 | assertEquals(0, h(0)); |
| 70 | assertEquals(0, h(0.1)); |
| 71 | assertEquals(0, h(0.5)); |
| 72 | assertEquals(0, h(-0.1)); |
| 73 | assertEquals(0, h(-0.5)); |
| 74 | assertEquals(1, h(1)); |
| 75 | assertEquals(1, h(1.1)); |
| 76 | assertEquals(1, h(1.5)); |
| 77 | assertEquals(1, h(-1)); |
| 78 | assertEquals(1, h(-1.1)); |
| 79 | assertEquals(1, h(-1.5)); |
| 80 | |
| 81 | assertEquals(Number.MIN_VALUE, f(Number.MIN_VALUE)); |
| 82 | assertEquals(Number.MIN_VALUE, f(-Number.MIN_VALUE)); |
| 83 | assertEquals(Number.MAX_VALUE, f(Number.MAX_VALUE)); |
| 84 | assertEquals(Number.MAX_VALUE, f(-Number.MAX_VALUE)); |