| // Copyright 2014 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| var stdlib = {}; |
| var foreign = {}; |
| var heap = new ArrayBuffer(64 * 1024); |
| |
| function Uint32Div(divisor) { |
| var name = "div_"; |
| name += divisor; |
| var m = eval("function Module(stdlib, foreign, heap) {\n" |
| + " \"use asm\";\n" |
| + " function " + name + "(dividend) {\n" |
| + " return ((dividend >>> 0) / " + divisor + ") >>> 0;\n" |
| + " }\n" |
| + " return { f: " + name + "}\n" |
| + "}; Module"); |
| return m(stdlib, foreign, heap).f; |
| } |
| |
| var divisors = [0, 1, 3, 4, 10, 42, 64, 100, 1024, 2147483647, 4294967295]; |
| for (var i in divisors) { |
| var divisor = divisors[i]; |
| var div = Uint32Div(divisor); |
| for (var dividend = 0; dividend < 4294967296; dividend += 3999773) { |
| assertEquals((dividend / divisor) >>> 0, div(dividend)); |
| } |
| } |
| |
| var div = (function(stdlib, foreign, heap) { |
| "use asm"; |
| function div(dividend, divisor) { |
| return (dividend >>> 0) / (divisor >>> 0) | 0; |
| } |
| return {div: div}; |
| })(stdlib, foreign, heap).div; |
| |
| for (var i in divisors) { |
| var divisor = divisors[i]; |
| for (var dividend = 0; dividend < 4294967296; dividend += 3999773) { |
| assertEquals((dividend >>> 0) / (divisor >>> 0) | 0, |
| div(dividend, divisor)); |
| } |
| } |