OLD | NEW |
(Empty) | |
| 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 var stdlib = {}; |
| 6 var foreign = {}; |
| 7 var heap = new ArrayBuffer(64 * 1024); |
| 8 |
| 9 function Word32And(rhs) { |
| 10 var name = "and_0x" + Number(rhs).toString(16); |
| 11 var m = eval("function Module(stdlib, foreign, heap) {\n" |
| 12 + " \"use asm\";\n" |
| 13 + " function " + name + "(lhs) {\n" |
| 14 + " return (lhs | 0) & 0x" + Number(rhs).toString(16) + ";\n" |
| 15 + " }\n" |
| 16 + " return { f: " + name + "}\n" |
| 17 + "}; Module"); |
| 18 return m(stdlib, foreign, heap).f; |
| 19 } |
| 20 |
| 21 var masks = [0xffffffff, 0xf0f0f0f0, 0x80ffffff, 0x07f77f0f, 0xdeadbeef, |
| 22 0x0fffff00, 0x0ff0, 0xff, 0x00]; |
| 23 for (var i in masks) { |
| 24 var rhs = masks[i]; |
| 25 var and = Word32And(rhs); |
| 26 for (var lhs = -2147483648; lhs < 2147483648; lhs += 3999773) { |
| 27 assertEquals(lhs & rhs, and(lhs)); |
| 28 } |
| 29 } |
OLD | NEW |