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)); 85
