34 lines
1.0 KiB
JavaScript
34 lines
1.0 KiB
JavaScript
|
// 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 Int32Div(divisor) {
|
||
|
|
var name = "div_";
|
||
|
|
if (divisor < 0) {
|
||
|
|
name += "minus_";
|
||
|
|
}
|
||
|
|
name += Math.abs(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 = [-2147483648, -32 * 1024, -1000, -16, -7, -2, -1, 0,
|
||
|
|
1, 3, 4, 10, 64, 100, 1024, 2147483647];
|
||
|
|
for (var i in divisors) {
|
||
|
|
var divisor = divisors[i];
|
||
|
|
var div = Int32Div(divisor);
|
||
|
|
for (var dividend = -2147483648; dividend < 2147483648; dividend += 3999773) {
|
||
|
|
assertEquals((dividend / divisor) | 0, div(dividend));
|
||
|
|
}
|
||
|
|
}
|