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1 // Copyright 2014 the V8 project authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 function Module(stdlib) { | 5 function Module(stdlib) { |
6 "use asm"; | 6 "use asm"; |
7 | 7 |
8 var abs = stdlib.Math.abs; | 8 var abs = stdlib.Math.abs; |
9 | 9 |
10 // f: double -> double | 10 // f: double -> double |
11 function f(a) { | 11 function f(a) { |
12 a = +a; | 12 a = +a; |
13 return +abs(a); | 13 return +abs(a); |
14 } | 14 } |
15 | 15 |
16 // g: unsigned -> double | 16 // g: unsigned -> double |
17 function g(a) { | 17 function g(a) { |
18 a = a>>>0; | 18 a = a | 0; |
19 return +abs(a); | 19 return +abs(+(a >>> 0)); |
20 } | 20 } |
21 | 21 |
22 // h: signed -> double | 22 // h: signed -> double |
23 function h(a) { | 23 function h(a) { |
24 a = a|0; | 24 a = a|0; |
25 return +abs(a); | 25 return +abs(+(a | 0)); |
26 } | 26 } |
27 | 27 |
28 return { f: f, g: g, h: h }; | 28 return { f: f, g: g, h: h }; |
29 } | 29 } |
30 | 30 |
31 var m = Module({ Math: Math }); | 31 var m = Module({ Math: Math }); |
32 var f = m.f; | 32 var f = m.f; |
33 var g = m.g; | 33 var g = m.g; |
34 var h = m.h; | 34 var h = m.h; |
35 | 35 |
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75 assertEquals(1, h(1.1)); | 75 assertEquals(1, h(1.1)); |
76 assertEquals(1, h(1.5)); | 76 assertEquals(1, h(1.5)); |
77 assertEquals(1, h(-1)); | 77 assertEquals(1, h(-1)); |
78 assertEquals(1, h(-1.1)); | 78 assertEquals(1, h(-1.1)); |
79 assertEquals(1, h(-1.5)); | 79 assertEquals(1, h(-1.5)); |
80 | 80 |
81 assertEquals(Number.MIN_VALUE, f(Number.MIN_VALUE)); | 81 assertEquals(Number.MIN_VALUE, f(Number.MIN_VALUE)); |
82 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)); | 83 assertEquals(Number.MAX_VALUE, f(Number.MAX_VALUE)); |
84 assertEquals(Number.MAX_VALUE, f(-Number.MAX_VALUE)); | 84 assertEquals(Number.MAX_VALUE, f(-Number.MAX_VALUE)); |
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