v8/test/mjsunit/asm/int32div.js
2014-10-14 11:57:06 +00:00

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));
}
}